./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/airline-20.i --full-output --architecture 32bit


--------------------------------------------------------------------------------


Checking for data races
Using default analysis
Version efd9311c
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/TaipanReach.xml -i /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/airline-20.i -s /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UTaipan-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) )

 --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 012c46975e61d3a8df350de2a682cb9d47f59406509497c2ea72a562542ce55a
--- Real Ultimate output ---
This is Ultimate 0.2.2-dev-efd9311-m
[2022-04-18 18:49:35,240 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-04-18 18:49:35,242 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-04-18 18:49:35,288 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-04-18 18:49:35,289 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-04-18 18:49:35,290 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-04-18 18:49:35,291 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-04-18 18:49:35,294 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-04-18 18:49:35,295 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-04-18 18:49:35,298 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-04-18 18:49:35,298 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-04-18 18:49:35,299 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-04-18 18:49:35,299 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-04-18 18:49:35,300 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-04-18 18:49:35,301 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-04-18 18:49:35,302 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-04-18 18:49:35,302 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-04-18 18:49:35,303 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-04-18 18:49:35,304 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-04-18 18:49:35,306 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-04-18 18:49:35,307 INFO  L181        SettingsManager]: Resetting HornVerifier preferences to default values
[2022-04-18 18:49:35,308 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-04-18 18:49:35,309 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-04-18 18:49:35,309 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-04-18 18:49:35,310 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-04-18 18:49:35,314 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-04-18 18:49:35,314 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-04-18 18:49:35,314 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-04-18 18:49:35,315 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-04-18 18:49:35,315 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-04-18 18:49:35,317 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-04-18 18:49:35,317 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-04-18 18:49:35,318 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-04-18 18:49:35,319 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-04-18 18:49:35,320 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-04-18 18:49:35,322 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-04-18 18:49:35,323 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-04-18 18:49:35,323 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-04-18 18:49:35,323 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-04-18 18:49:35,324 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-04-18 18:49:35,324 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-04-18 18:49:35,326 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-04-18 18:49:35,328 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf
[2022-04-18 18:49:35,359 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-04-18 18:49:35,359 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-04-18 18:49:35,360 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-04-18 18:49:35,360 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-04-18 18:49:35,360 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-04-18 18:49:35,361 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-04-18 18:49:35,361 INFO  L138        SettingsManager]:  * User list type=DISABLED
[2022-04-18 18:49:35,361 INFO  L136        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2022-04-18 18:49:35,361 INFO  L138        SettingsManager]:  * Explicit value domain=true
[2022-04-18 18:49:35,362 INFO  L138        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2022-04-18 18:49:35,362 INFO  L138        SettingsManager]:  * Octagon Domain=false
[2022-04-18 18:49:35,362 INFO  L138        SettingsManager]:  * Abstract domain=CompoundDomain
[2022-04-18 18:49:35,362 INFO  L138        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2022-04-18 18:49:35,363 INFO  L138        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2022-04-18 18:49:35,363 INFO  L138        SettingsManager]:  * Interval Domain=false
[2022-04-18 18:49:35,363 INFO  L136        SettingsManager]: Preferences of Sifa differ from their defaults:
[2022-04-18 18:49:35,364 INFO  L138        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2022-04-18 18:49:35,364 INFO  L138        SettingsManager]:  * Simplification Technique=POLY_PAC
[2022-04-18 18:49:35,365 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-04-18 18:49:35,365 INFO  L138        SettingsManager]:  * sizeof long=4
[2022-04-18 18:49:35,366 INFO  L138        SettingsManager]:  * Check unreachability of error function in SV-COMP mode=false
[2022-04-18 18:49:35,366 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-04-18 18:49:35,366 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2022-04-18 18:49:35,366 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-04-18 18:49:35,366 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-04-18 18:49:35,366 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-04-18 18:49:35,367 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-04-18 18:49:35,367 INFO  L138        SettingsManager]:  * Check absence of data races in concurrent programs=true
[2022-04-18 18:49:35,367 INFO  L138        SettingsManager]:  * sizeof long double=12
[2022-04-18 18:49:35,367 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-04-18 18:49:35,367 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-04-18 18:49:35,368 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-04-18 18:49:35,368 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-04-18 18:49:35,368 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-04-18 18:49:35,368 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-04-18 18:49:35,368 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-04-18 18:49:35,368 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-04-18 18:49:35,369 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-04-18 18:49:35,369 INFO  L138        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2022-04-18 18:49:35,369 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-04-18 18:49:35,369 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-04-18 18:49:35,369 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-04-18 18:49:35,370 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-04-18 18:49:35,370 INFO  L138        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:/storage/repos/ultimate/releaseScripts/default/UTaipan-linux/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 -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) )


Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> 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 -> 012c46975e61d3a8df350de2a682cb9d47f59406509497c2ea72a562542ce55a
[2022-04-18 18:49:35,604 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-04-18 18:49:35,622 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-04-18 18:49:35,624 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-04-18 18:49:35,624 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-04-18 18:49:35,625 INFO  L275        PluginConnector]: CDTParser initialized
[2022-04-18 18:49:35,626 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/airline-20.i
[2022-04-18 18:49:35,683 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4768e8fe3/19aca78f19c7452289576a0ffb2f9f53/FLAG125f495b3
[2022-04-18 18:49:36,197 INFO  L306              CDTParser]: Found 1 translation units.
[2022-04-18 18:49:36,198 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/airline-20.i
[2022-04-18 18:49:36,217 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4768e8fe3/19aca78f19c7452289576a0ffb2f9f53/FLAG125f495b3
[2022-04-18 18:49:36,688 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4768e8fe3/19aca78f19c7452289576a0ffb2f9f53
[2022-04-18 18:49:36,690 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-04-18 18:49:36,691 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-04-18 18:49:36,696 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-04-18 18:49:36,696 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-04-18 18:49:36,699 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-04-18 18:49:36,700 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:49:36" (1/1) ...
[2022-04-18 18:49:36,701 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51c4df42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:49:36, skipping insertion in model container
[2022-04-18 18:49:36,701 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:49:36" (1/1) ...
[2022-04-18 18:49:36,708 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-04-18 18:49:36,754 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-04-18 18:49:37,104 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/airline-20.i[32101,32114]
[2022-04-18 18:49:37,105 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-04-18 18:49:37,112 INFO  L203         MainTranslator]: Completed pre-run
[2022-04-18 18:49:37,159 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/airline-20.i[32101,32114]
[2022-04-18 18:49:37,167 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-04-18 18:49:37,199 INFO  L208         MainTranslator]: Completed translation
[2022-04-18 18:49:37,200 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:49:37 WrapperNode
[2022-04-18 18:49:37,200 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-04-18 18:49:37,201 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-04-18 18:49:37,202 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-04-18 18:49:37,202 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-04-18 18:49:37,209 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:49:37" (1/1) ...
[2022-04-18 18:49:37,236 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:49:37" (1/1) ...
[2022-04-18 18:49:37,262 INFO  L137                Inliner]: procedures = 162, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 80
[2022-04-18 18:49:37,263 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-04-18 18:49:37,264 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-04-18 18:49:37,264 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-04-18 18:49:37,265 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-04-18 18:49:37,271 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:49:37" (1/1) ...
[2022-04-18 18:49:37,272 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:49:37" (1/1) ...
[2022-04-18 18:49:37,280 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:49:37" (1/1) ...
[2022-04-18 18:49:37,282 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:49:37" (1/1) ...
[2022-04-18 18:49:37,295 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:49:37" (1/1) ...
[2022-04-18 18:49:37,303 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:49:37" (1/1) ...
[2022-04-18 18:49:37,305 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:49:37" (1/1) ...
[2022-04-18 18:49:37,310 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-04-18 18:49:37,314 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-04-18 18:49:37,315 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-04-18 18:49:37,315 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-04-18 18:49:37,316 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:49:37" (1/1) ...
[2022-04-18 18:49:37,322 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-04-18 18:49:37,331 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3
[2022-04-18 18:49:37,344 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-04-18 18:49:37,377 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-04-18 18:49:37,398 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2022-04-18 18:49:37,399 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2022-04-18 18:49:37,399 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin
[2022-04-18 18:49:37,399 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-04-18 18:49:37,399 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2022-04-18 18:49:37,399 INFO  L130     BoogieDeclarations]: Found specification of procedure salethread
[2022-04-18 18:49:37,400 INFO  L138     BoogieDeclarations]: Found implementation of procedure salethread
[2022-04-18 18:49:37,400 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-04-18 18:49:37,400 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2022-04-18 18:49:37,400 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end
[2022-04-18 18:49:37,400 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-04-18 18:49:37,400 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-04-18 18:49:37,401 WARN  L208             CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement
[2022-04-18 18:49:37,555 INFO  L234             CfgBuilder]: Building ICFG
[2022-04-18 18:49:37,557 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-04-18 18:49:37,777 INFO  L275             CfgBuilder]: Performing block encoding
[2022-04-18 18:49:37,816 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-04-18 18:49:37,816 INFO  L299             CfgBuilder]: Removed 2 assume(true) statements.
[2022-04-18 18:49:37,818 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:49:37 BoogieIcfgContainer
[2022-04-18 18:49:37,818 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-04-18 18:49:37,821 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-04-18 18:49:37,821 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-04-18 18:49:37,824 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-04-18 18:49:37,825 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 06:49:36" (1/3) ...
[2022-04-18 18:49:37,825 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57972996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:49:37, skipping insertion in model container
[2022-04-18 18:49:37,826 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:49:37" (2/3) ...
[2022-04-18 18:49:37,826 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57972996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:49:37, skipping insertion in model container
[2022-04-18 18:49:37,826 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:49:37" (3/3) ...
[2022-04-18 18:49:37,827 INFO  L111   eAbstractionObserver]: Analyzing ICFG airline-20.i
[2022-04-18 18:49:37,831 WARN  L147   ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2022-04-18 18:49:37,832 INFO  L202   ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-04-18 18:49:37,832 INFO  L161   ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations.
[2022-04-18 18:49:37,832 INFO  L504   ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2022-04-18 18:49:37,885 INFO  L135    ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions.
[2022-04-18 18:49:37,930 INFO  L339      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-04-18 18:49:37,937 INFO  L340      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP
[2022-04-18 18:49:37,937 INFO  L341      AbstractCegarLoop]: Starting to check reachability of 14 error locations.
[2022-04-18 18:49:37,951 INFO  L116   etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation.
[2022-04-18 18:49:37,967 INFO  L131   etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 88 transitions, 184 flow
[2022-04-18 18:49:37,970 INFO  L110        LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 88 transitions, 184 flow
[2022-04-18 18:49:37,972 INFO  L74            FinitePrefix]: Start finitePrefix. Operand has 85 places, 88 transitions, 184 flow
[2022-04-18 18:49:38,014 INFO  L129       PetriNetUnfolder]: 9/119 cut-off events.
[2022-04-18 18:49:38,015 INFO  L130       PetriNetUnfolder]: For 1/1 co-relation queries the response was YES.
[2022-04-18 18:49:38,019 INFO  L84            FinitePrefix]: Finished finitePrefix Result has 125 conditions, 119 events. 9/119 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 246 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 58. Up to 4 conditions per place. 
[2022-04-18 18:49:38,024 INFO  L116        LiptonReduction]: Number of co-enabled transitions 1332
[2022-04-18 18:49:40,299 INFO  L131        LiptonReduction]: Checked pairs total: 2028
[2022-04-18 18:49:40,299 INFO  L133        LiptonReduction]: Total number of compositions: 109
[2022-04-18 18:49:40,306 INFO  L111   iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 24 places, 24 transitions, 56 flow
[2022-04-18 18:49:40,326 INFO  L133   iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result  has 82 states, 51 states have (on average 3.0) internal successors, (153), 81 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:49:40,328 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 82 states, 51 states have (on average 3.0) internal successors, (153), 81 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:49:40,332 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2
[2022-04-18 18:49:40,332 INFO  L491         BasicCegarLoop]: Found error trace
[2022-04-18 18:49:40,333 INFO  L499         BasicCegarLoop]: trace histogram [1]
[2022-04-18 18:49:40,333 INFO  L403      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 11 more)] ===
[2022-04-18 18:49:40,337 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-04-18 18:49:40,337 INFO  L85        PathProgramCache]: Analyzing trace with hash 410, now seen corresponding path program 1 times
[2022-04-18 18:49:40,344 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-04-18 18:49:40,345 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184285046]
[2022-04-18 18:49:40,345 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-18 18:49:40,346 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-18 18:49:40,429 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-18 18:49:40,455 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-04-18 18:49:40,455 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-04-18 18:49:40,456 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184285046]
[2022-04-18 18:49:40,456 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184285046] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-18 18:49:40,457 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-18 18:49:40,457 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0
[2022-04-18 18:49:40,458 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606437325]
[2022-04-18 18:49:40,459 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-04-18 18:49:40,462 INFO  L554      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-04-18 18:49:40,462 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-04-18 18:49:40,483 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-04-18 18:49:40,483 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-04-18 18:49:40,485 INFO  L87              Difference]: Start difference. First operand  has 82 states, 51 states have (on average 3.0) internal successors, (153), 81 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:49:40,517 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-04-18 18:49:40,517 INFO  L93              Difference]: Finished difference Result 31 states and 53 transitions.
[2022-04-18 18:49:40,519 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-04-18 18:49:40,520 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1
[2022-04-18 18:49:40,520 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-04-18 18:49:40,526 INFO  L225             Difference]: With dead ends: 31
[2022-04-18 18:49:40,526 INFO  L226             Difference]: Without dead ends: 15
[2022-04-18 18:49:40,527 INFO  L912         BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-04-18 18:49:40,531 INFO  L913         BasicCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-04-18 18:49:40,532 INFO  L914         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-04-18 18:49:40,545 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15 states.
[2022-04-18 18:49:40,553 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15.
[2022-04-18 18:49:40,554 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 15 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:49:40,555 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 24 transitions.
[2022-04-18 18:49:40,556 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states and 24 transitions. Word has length 1
[2022-04-18 18:49:40,556 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-04-18 18:49:40,556 INFO  L478      AbstractCegarLoop]: Abstraction has 15 states and 24 transitions.
[2022-04-18 18:49:40,557 INFO  L479      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:49:40,557 INFO  L276                IsEmpty]: Start isEmpty. Operand 15 states and 24 transitions.
[2022-04-18 18:49:40,558 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2022-04-18 18:49:40,558 INFO  L491         BasicCegarLoop]: Found error trace
[2022-04-18 18:49:40,558 INFO  L499         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1]
[2022-04-18 18:49:40,558 WARN  L460      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-04-18 18:49:40,559 INFO  L403      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 11 more)] ===
[2022-04-18 18:49:40,561 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-04-18 18:49:40,561 INFO  L85        PathProgramCache]: Analyzing trace with hash -866088313, now seen corresponding path program 1 times
[2022-04-18 18:49:40,561 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-04-18 18:49:40,565 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650783878]
[2022-04-18 18:49:40,565 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-18 18:49:40,566 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-18 18:49:40,612 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-04-18 18:49:40,613 INFO  L352             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2022-04-18 18:49:40,641 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-04-18 18:49:40,662 INFO  L130   FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace
[2022-04-18 18:49:40,663 INFO  L618         BasicCegarLoop]: Counterexample is feasible
[2022-04-18 18:49:40,664 INFO  L788   garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining)
[2022-04-18 18:49:40,666 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr0ASSERT_VIOLATIONDATA_RACE (12 of 14 remaining)
[2022-04-18 18:49:40,666 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr1ASSERT_VIOLATIONDATA_RACE (11 of 14 remaining)
[2022-04-18 18:49:40,667 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr2ASSERT_VIOLATIONDATA_RACE (10 of 14 remaining)
[2022-04-18 18:49:40,667 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr3ASSERT_VIOLATIONDATA_RACE (9 of 14 remaining)
[2022-04-18 18:49:40,667 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 14 remaining)
[2022-04-18 18:49:40,673 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (7 of 14 remaining)
[2022-04-18 18:49:40,674 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (6 of 14 remaining)
[2022-04-18 18:49:40,674 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (5 of 14 remaining)
[2022-04-18 18:49:40,674 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (4 of 14 remaining)
[2022-04-18 18:49:40,674 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr0ASSERT_VIOLATIONDATA_RACE (3 of 14 remaining)
[2022-04-18 18:49:40,675 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr1ASSERT_VIOLATIONDATA_RACE (2 of 14 remaining)
[2022-04-18 18:49:40,675 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr2ASSERT_VIOLATIONDATA_RACE (1 of 14 remaining)
[2022-04-18 18:49:40,675 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr3ASSERT_VIOLATIONDATA_RACE (0 of 14 remaining)
[2022-04-18 18:49:40,675 WARN  L460      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-04-18 18:49:40,678 INFO  L719         BasicCegarLoop]: Path program histogram: [1, 1]
[2022-04-18 18:49:40,679 WARN  L232   ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis
[2022-04-18 18:49:40,680 INFO  L504   ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances.
[2022-04-18 18:49:40,697 INFO  L135    ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions.
[2022-04-18 18:49:40,698 INFO  L339      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-04-18 18:49:40,699 INFO  L340      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP
[2022-04-18 18:49:40,699 INFO  L341      AbstractCegarLoop]: Starting to check reachability of 18 error locations.
[2022-04-18 18:49:40,700 INFO  L116   etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation.
[2022-04-18 18:49:40,700 INFO  L131   etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 108 transitions, 234 flow
[2022-04-18 18:49:40,701 INFO  L110        LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 108 transitions, 234 flow
[2022-04-18 18:49:40,701 INFO  L74            FinitePrefix]: Start finitePrefix. Operand has 104 places, 108 transitions, 234 flow
[2022-04-18 18:49:40,728 INFO  L129       PetriNetUnfolder]: 18/209 cut-off events.
[2022-04-18 18:49:40,728 INFO  L130       PetriNetUnfolder]: For 6/6 co-relation queries the response was YES.
[2022-04-18 18:49:40,730 INFO  L84            FinitePrefix]: Finished finitePrefix Result has 223 conditions, 209 events. 18/209 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 517 event pairs, 0 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 121. Up to 8 conditions per place. 
[2022-04-18 18:49:40,734 INFO  L116        LiptonReduction]: Number of co-enabled transitions 3708
[2022-04-18 18:49:42,741 INFO  L131        LiptonReduction]: Checked pairs total: 15726
[2022-04-18 18:49:42,742 INFO  L133        LiptonReduction]: Total number of compositions: 114
[2022-04-18 18:49:42,743 INFO  L111   iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 48 places, 50 transitions, 118 flow
[2022-04-18 18:49:42,827 INFO  L133   iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result  has 2327 states, 2167 states have (on average 3.2505768343331796) internal successors, (7044), 2326 states have internal predecessors, (7044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:49:42,832 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 2327 states, 2167 states have (on average 3.2505768343331796) internal successors, (7044), 2326 states have internal predecessors, (7044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:49:42,833 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2
[2022-04-18 18:49:42,833 INFO  L491         BasicCegarLoop]: Found error trace
[2022-04-18 18:49:42,833 INFO  L499         BasicCegarLoop]: trace histogram [1]
[2022-04-18 18:49:42,833 INFO  L403      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] ===
[2022-04-18 18:49:42,834 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-04-18 18:49:42,834 INFO  L85        PathProgramCache]: Analyzing trace with hash 649, now seen corresponding path program 1 times
[2022-04-18 18:49:42,834 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-04-18 18:49:42,834 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311925103]
[2022-04-18 18:49:42,834 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-18 18:49:42,835 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-18 18:49:42,841 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-18 18:49:42,845 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-04-18 18:49:42,845 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-04-18 18:49:42,845 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311925103]
[2022-04-18 18:49:42,846 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311925103] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-18 18:49:42,846 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-18 18:49:42,846 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0
[2022-04-18 18:49:42,846 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043709466]
[2022-04-18 18:49:42,846 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-04-18 18:49:42,846 INFO  L554      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-04-18 18:49:42,847 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-04-18 18:49:42,847 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-04-18 18:49:42,847 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-04-18 18:49:42,854 INFO  L87              Difference]: Start difference. First operand  has 2327 states, 2167 states have (on average 3.2505768343331796) internal successors, (7044), 2326 states have internal predecessors, (7044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:49:42,920 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-04-18 18:49:42,920 INFO  L93              Difference]: Finished difference Result 1560 states and 4596 transitions.
[2022-04-18 18:49:42,921 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-04-18 18:49:42,921 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1
[2022-04-18 18:49:42,921 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-04-18 18:49:42,954 INFO  L225             Difference]: With dead ends: 1560
[2022-04-18 18:49:42,955 INFO  L226             Difference]: Without dead ends: 1489
[2022-04-18 18:49:42,955 INFO  L912         BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-04-18 18:49:42,956 INFO  L913         BasicCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-04-18 18:49:42,957 INFO  L914         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-04-18 18:49:42,961 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1489 states.
[2022-04-18 18:49:43,037 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1489.
[2022-04-18 18:49:43,043 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1489 states, 1444 states have (on average 3.0173130193905817) internal successors, (4357), 1488 states have internal predecessors, (4357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:49:43,053 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 4357 transitions.
[2022-04-18 18:49:43,053 INFO  L78                 Accepts]: Start accepts. Automaton has 1489 states and 4357 transitions. Word has length 1
[2022-04-18 18:49:43,053 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-04-18 18:49:43,053 INFO  L478      AbstractCegarLoop]: Abstraction has 1489 states and 4357 transitions.
[2022-04-18 18:49:43,056 INFO  L479      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:49:43,056 INFO  L276                IsEmpty]: Start isEmpty. Operand 1489 states and 4357 transitions.
[2022-04-18 18:49:43,057 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5
[2022-04-18 18:49:43,057 INFO  L491         BasicCegarLoop]: Found error trace
[2022-04-18 18:49:43,057 INFO  L499         BasicCegarLoop]: trace histogram [1, 1, 1, 1]
[2022-04-18 18:49:43,057 WARN  L460      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-04-18 18:49:43,057 INFO  L403      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] ===
[2022-04-18 18:49:43,058 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-04-18 18:49:43,058 INFO  L85        PathProgramCache]: Analyzing trace with hash 19913144, now seen corresponding path program 1 times
[2022-04-18 18:49:43,058 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-04-18 18:49:43,058 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580312206]
[2022-04-18 18:49:43,058 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-18 18:49:43,059 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-18 18:49:43,073 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-18 18:49:43,102 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-04-18 18:49:43,102 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-04-18 18:49:43,102 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580312206]
[2022-04-18 18:49:43,102 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580312206] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-18 18:49:43,103 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-18 18:49:43,103 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-04-18 18:49:43,103 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353212097]
[2022-04-18 18:49:43,103 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-04-18 18:49:43,104 INFO  L554      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-04-18 18:49:43,104 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-04-18 18:49:43,104 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-04-18 18:49:43,104 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-04-18 18:49:43,105 INFO  L87              Difference]: Start difference. First operand 1489 states and 4357 transitions. Second operand  has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:49:43,173 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-04-18 18:49:43,173 INFO  L93              Difference]: Finished difference Result 1489 states and 4356 transitions.
[2022-04-18 18:49:43,174 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-04-18 18:49:43,174 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4
[2022-04-18 18:49:43,174 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-04-18 18:49:43,184 INFO  L225             Difference]: With dead ends: 1489
[2022-04-18 18:49:43,184 INFO  L226             Difference]: Without dead ends: 1489
[2022-04-18 18:49:43,185 INFO  L912         BasicCegarLoop]: 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
[2022-04-18 18:49:43,185 INFO  L913         BasicCegarLoop]: 16 mSDtfsCounter, 15 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-04-18 18:49:43,186 INFO  L914         BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 32 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-04-18 18:49:43,190 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1489 states.
[2022-04-18 18:49:43,216 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1489.
[2022-04-18 18:49:43,219 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1489 states, 1444 states have (on average 3.0166204986149583) internal successors, (4356), 1488 states have internal predecessors, (4356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:49:43,227 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 4356 transitions.
[2022-04-18 18:49:43,227 INFO  L78                 Accepts]: Start accepts. Automaton has 1489 states and 4356 transitions. Word has length 4
[2022-04-18 18:49:43,227 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-04-18 18:49:43,227 INFO  L478      AbstractCegarLoop]: Abstraction has 1489 states and 4356 transitions.
[2022-04-18 18:49:43,227 INFO  L479      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:49:43,228 INFO  L276                IsEmpty]: Start isEmpty. Operand 1489 states and 4356 transitions.
[2022-04-18 18:49:43,228 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6
[2022-04-18 18:49:43,228 INFO  L491         BasicCegarLoop]: Found error trace
[2022-04-18 18:49:43,228 INFO  L499         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1]
[2022-04-18 18:49:43,228 WARN  L460      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-04-18 18:49:43,229 INFO  L403      AbstractCegarLoop]: === Iteration 3 === Targeting salethreadErr0ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] ===
[2022-04-18 18:49:43,229 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-04-18 18:49:43,229 INFO  L85        PathProgramCache]: Analyzing trace with hash 617831897, now seen corresponding path program 1 times
[2022-04-18 18:49:43,229 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-04-18 18:49:43,230 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787544116]
[2022-04-18 18:49:43,230 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-18 18:49:43,230 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-18 18:49:43,240 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-18 18:49:43,256 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-04-18 18:49:43,256 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-04-18 18:49:43,256 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787544116]
[2022-04-18 18:49:43,256 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787544116] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-18 18:49:43,257 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-18 18:49:43,257 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-04-18 18:49:43,257 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431304336]
[2022-04-18 18:49:43,257 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-04-18 18:49:43,257 INFO  L554      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-04-18 18:49:43,257 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-04-18 18:49:43,258 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-04-18 18:49:43,258 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-04-18 18:49:43,258 INFO  L87              Difference]: Start difference. First operand 1489 states and 4356 transitions. Second operand  has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:49:43,329 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-04-18 18:49:43,329 INFO  L93              Difference]: Finished difference Result 1616 states and 4380 transitions.
[2022-04-18 18:49:43,329 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-04-18 18:49:43,330 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5
[2022-04-18 18:49:43,330 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-04-18 18:49:43,339 INFO  L225             Difference]: With dead ends: 1616
[2022-04-18 18:49:43,339 INFO  L226             Difference]: Without dead ends: 1616
[2022-04-18 18:49:43,339 INFO  L912         BasicCegarLoop]: 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
[2022-04-18 18:49:43,340 INFO  L913         BasicCegarLoop]: 18 mSDtfsCounter, 33 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-04-18 18:49:43,341 INFO  L914         BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 30 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-04-18 18:49:43,361 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1616 states.
[2022-04-18 18:49:43,384 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1616 to 1314.
[2022-04-18 18:49:43,387 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1314 states, 1281 states have (on average 2.9656518345042935) internal successors, (3799), 1313 states have internal predecessors, (3799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:49:43,393 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1314 states to 1314 states and 3799 transitions.
[2022-04-18 18:49:43,393 INFO  L78                 Accepts]: Start accepts. Automaton has 1314 states and 3799 transitions. Word has length 5
[2022-04-18 18:49:43,394 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-04-18 18:49:43,394 INFO  L478      AbstractCegarLoop]: Abstraction has 1314 states and 3799 transitions.
[2022-04-18 18:49:43,394 INFO  L479      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:49:43,394 INFO  L276                IsEmpty]: Start isEmpty. Operand 1314 states and 3799 transitions.
[2022-04-18 18:49:43,395 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2022-04-18 18:49:43,395 INFO  L491         BasicCegarLoop]: Found error trace
[2022-04-18 18:49:43,395 INFO  L499         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2022-04-18 18:49:43,395 WARN  L460      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2022-04-18 18:49:43,395 INFO  L403      AbstractCegarLoop]: === Iteration 4 === Targeting salethreadErr1ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] ===
[2022-04-18 18:49:43,396 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-04-18 18:49:43,396 INFO  L85        PathProgramCache]: Analyzing trace with hash 1031045758, now seen corresponding path program 1 times
[2022-04-18 18:49:43,396 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-04-18 18:49:43,396 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582546390]
[2022-04-18 18:49:43,396 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-18 18:49:43,397 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-18 18:49:43,409 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-18 18:49:43,422 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-04-18 18:49:43,422 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-04-18 18:49:43,423 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582546390]
[2022-04-18 18:49:43,423 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582546390] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-18 18:49:43,423 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-18 18:49:43,423 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-04-18 18:49:43,423 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063841552]
[2022-04-18 18:49:43,423 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-04-18 18:49:43,424 INFO  L554      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-04-18 18:49:43,424 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-04-18 18:49:43,424 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-04-18 18:49:43,424 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-04-18 18:49:43,425 INFO  L87              Difference]: Start difference. First operand 1314 states and 3799 transitions. Second operand  has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:49:43,485 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-04-18 18:49:43,485 INFO  L93              Difference]: Finished difference Result 1280 states and 3412 transitions.
[2022-04-18 18:49:43,485 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-04-18 18:49:43,486 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7
[2022-04-18 18:49:43,486 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-04-18 18:49:43,492 INFO  L225             Difference]: With dead ends: 1280
[2022-04-18 18:49:43,492 INFO  L226             Difference]: Without dead ends: 1092
[2022-04-18 18:49:43,492 INFO  L912         BasicCegarLoop]: 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
[2022-04-18 18:49:43,493 INFO  L913         BasicCegarLoop]: 20 mSDtfsCounter, 31 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-04-18 18:49:43,493 INFO  L914         BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 26 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-04-18 18:49:43,496 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1092 states.
[2022-04-18 18:49:43,512 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1092 to 952.
[2022-04-18 18:49:43,514 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 952 states, 930 states have (on average 2.7655913978494624) internal successors, (2572), 951 states have internal predecessors, (2572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:49:43,518 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 2572 transitions.
[2022-04-18 18:49:43,519 INFO  L78                 Accepts]: Start accepts. Automaton has 952 states and 2572 transitions. Word has length 7
[2022-04-18 18:49:43,519 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-04-18 18:49:43,519 INFO  L478      AbstractCegarLoop]: Abstraction has 952 states and 2572 transitions.
[2022-04-18 18:49:43,519 INFO  L479      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:49:43,519 INFO  L276                IsEmpty]: Start isEmpty. Operand 952 states and 2572 transitions.
[2022-04-18 18:49:43,520 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2022-04-18 18:49:43,521 INFO  L491         BasicCegarLoop]: Found error trace
[2022-04-18 18:49:43,521 INFO  L499         BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1]
[2022-04-18 18:49:43,521 WARN  L460      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2022-04-18 18:49:43,521 INFO  L403      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] ===
[2022-04-18 18:49:43,521 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-04-18 18:49:43,522 INFO  L85        PathProgramCache]: Analyzing trace with hash 684775472, now seen corresponding path program 1 times
[2022-04-18 18:49:43,522 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-04-18 18:49:43,522 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191153209]
[2022-04-18 18:49:43,522 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-18 18:49:43,522 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-18 18:49:43,544 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-04-18 18:49:43,545 INFO  L352             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2022-04-18 18:49:43,553 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-04-18 18:49:43,557 INFO  L130   FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace
[2022-04-18 18:49:43,557 INFO  L618         BasicCegarLoop]: Counterexample is feasible
[2022-04-18 18:49:43,558 INFO  L788   garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining)
[2022-04-18 18:49:43,558 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr0ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining)
[2022-04-18 18:49:43,558 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr1ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining)
[2022-04-18 18:49:43,558 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr2ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining)
[2022-04-18 18:49:43,559 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr3ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining)
[2022-04-18 18:49:43,559 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 18 remaining)
[2022-04-18 18:49:43,559 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining)
[2022-04-18 18:49:43,559 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining)
[2022-04-18 18:49:43,559 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining)
[2022-04-18 18:49:43,560 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining)
[2022-04-18 18:49:43,560 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr0ASSERT_VIOLATIONDATA_RACE (7 of 18 remaining)
[2022-04-18 18:49:43,560 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr1ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining)
[2022-04-18 18:49:43,560 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr2ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining)
[2022-04-18 18:49:43,560 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr3ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining)
[2022-04-18 18:49:43,560 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr0ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining)
[2022-04-18 18:49:43,561 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr1ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining)
[2022-04-18 18:49:43,561 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr2ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining)
[2022-04-18 18:49:43,561 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr3ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining)
[2022-04-18 18:49:43,561 WARN  L460      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2022-04-18 18:49:43,562 INFO  L719         BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1]
[2022-04-18 18:49:43,562 WARN  L232   ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis
[2022-04-18 18:49:43,562 INFO  L504   ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances.
[2022-04-18 18:49:43,573 INFO  L135    ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions.
[2022-04-18 18:49:43,574 INFO  L339      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-04-18 18:49:43,575 INFO  L340      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP
[2022-04-18 18:49:43,575 INFO  L341      AbstractCegarLoop]: Starting to check reachability of 22 error locations.
[2022-04-18 18:49:43,576 INFO  L116   etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation.
[2022-04-18 18:49:43,577 INFO  L131   etLargeBlockEncoding]: Starting large block encoding on Petri net that has 123 places, 128 transitions, 286 flow
[2022-04-18 18:49:43,577 INFO  L110        LiptonReduction]: Starting Lipton reduction on Petri net that has 123 places, 128 transitions, 286 flow
[2022-04-18 18:49:43,577 INFO  L74            FinitePrefix]: Start finitePrefix. Operand has 123 places, 128 transitions, 286 flow
[2022-04-18 18:49:43,627 INFO  L129       PetriNetUnfolder]: 34/360 cut-off events.
[2022-04-18 18:49:43,628 INFO  L130       PetriNetUnfolder]: For 19/19 co-relation queries the response was YES.
[2022-04-18 18:49:43,630 INFO  L84            FinitePrefix]: Finished finitePrefix Result has 388 conditions, 360 events. 34/360 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1121 event pairs, 1 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 217. Up to 16 conditions per place. 
[2022-04-18 18:49:43,639 INFO  L116        LiptonReduction]: Number of co-enabled transitions 6696
[2022-04-18 18:49:45,893 INFO  L131        LiptonReduction]: Checked pairs total: 33119
[2022-04-18 18:49:45,893 INFO  L133        LiptonReduction]: Total number of compositions: 134
[2022-04-18 18:49:45,894 INFO  L111   iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 63 places, 65 transitions, 160 flow
[2022-04-18 18:49:46,944 INFO  L133   iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result  has 32019 states, 31119 states have (on average 4.079179922234005) internal successors, (126940), 32018 states have internal predecessors, (126940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:49:47,015 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 32019 states, 31119 states have (on average 4.079179922234005) internal successors, (126940), 32018 states have internal predecessors, (126940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:49:47,016 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2
[2022-04-18 18:49:47,016 INFO  L491         BasicCegarLoop]: Found error trace
[2022-04-18 18:49:47,016 INFO  L499         BasicCegarLoop]: trace histogram [1]
[2022-04-18 18:49:47,017 INFO  L403      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] ===
[2022-04-18 18:49:47,018 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-04-18 18:49:47,018 INFO  L85        PathProgramCache]: Analyzing trace with hash 927, now seen corresponding path program 1 times
[2022-04-18 18:49:47,018 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-04-18 18:49:47,018 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454500619]
[2022-04-18 18:49:47,018 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-18 18:49:47,018 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-18 18:49:47,026 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-18 18:49:47,033 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-04-18 18:49:47,033 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-04-18 18:49:47,033 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454500619]
[2022-04-18 18:49:47,034 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454500619] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-18 18:49:47,034 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-18 18:49:47,034 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0
[2022-04-18 18:49:47,034 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788938321]
[2022-04-18 18:49:47,034 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-04-18 18:49:47,034 INFO  L554      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-04-18 18:49:47,035 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-04-18 18:49:47,035 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-04-18 18:49:47,035 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-04-18 18:49:47,125 INFO  L87              Difference]: Start difference. First operand  has 32019 states, 31119 states have (on average 4.079179922234005) internal successors, (126940), 32018 states have internal predecessors, (126940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:49:47,544 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-04-18 18:49:47,544 INFO  L93              Difference]: Finished difference Result 18346 states and 72827 transitions.
[2022-04-18 18:49:47,545 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-04-18 18:49:47,545 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1
[2022-04-18 18:49:47,545 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-04-18 18:49:47,869 INFO  L225             Difference]: With dead ends: 18346
[2022-04-18 18:49:47,870 INFO  L226             Difference]: Without dead ends: 17915
[2022-04-18 18:49:47,870 INFO  L912         BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-04-18 18:49:47,871 INFO  L913         BasicCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-04-18 18:49:47,872 INFO  L914         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-04-18 18:49:47,914 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17915 states.
[2022-04-18 18:49:48,537 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17915 to 17915.
[2022-04-18 18:49:48,573 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 17915 states, 17742 states have (on average 3.995265471761921) internal successors, (70884), 17914 states have internal predecessors, (70884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:49:48,880 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 17915 states to 17915 states and 70884 transitions.
[2022-04-18 18:49:48,880 INFO  L78                 Accepts]: Start accepts. Automaton has 17915 states and 70884 transitions. Word has length 1
[2022-04-18 18:49:48,880 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-04-18 18:49:48,880 INFO  L478      AbstractCegarLoop]: Abstraction has 17915 states and 70884 transitions.
[2022-04-18 18:49:48,881 INFO  L479      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:49:48,881 INFO  L276                IsEmpty]: Start isEmpty. Operand 17915 states and 70884 transitions.
[2022-04-18 18:49:48,884 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5
[2022-04-18 18:49:48,884 INFO  L491         BasicCegarLoop]: Found error trace
[2022-04-18 18:49:48,885 INFO  L499         BasicCegarLoop]: trace histogram [1, 1, 1, 1]
[2022-04-18 18:49:48,885 WARN  L460      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2022-04-18 18:49:48,885 INFO  L403      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] ===
[2022-04-18 18:49:48,886 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-04-18 18:49:48,886 INFO  L85        PathProgramCache]: Analyzing trace with hash 28611087, now seen corresponding path program 1 times
[2022-04-18 18:49:48,886 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-04-18 18:49:48,886 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503093442]
[2022-04-18 18:49:48,886 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-18 18:49:48,886 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-18 18:49:48,905 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-18 18:49:48,920 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-04-18 18:49:48,920 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-04-18 18:49:48,920 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503093442]
[2022-04-18 18:49:48,921 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503093442] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-18 18:49:48,921 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-18 18:49:48,921 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-04-18 18:49:48,921 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888435321]
[2022-04-18 18:49:48,921 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-04-18 18:49:48,922 INFO  L554      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-04-18 18:49:48,922 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-04-18 18:49:48,923 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-04-18 18:49:48,923 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-04-18 18:49:48,923 INFO  L87              Difference]: Start difference. First operand 17915 states and 70884 transitions. Second operand  has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:49:49,218 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-04-18 18:49:49,218 INFO  L93              Difference]: Finished difference Result 17915 states and 70883 transitions.
[2022-04-18 18:49:49,218 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-04-18 18:49:49,219 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4
[2022-04-18 18:49:49,219 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-04-18 18:49:49,450 INFO  L225             Difference]: With dead ends: 17915
[2022-04-18 18:49:49,450 INFO  L226             Difference]: Without dead ends: 17915
[2022-04-18 18:49:49,450 INFO  L912         BasicCegarLoop]: 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
[2022-04-18 18:49:49,463 INFO  L913         BasicCegarLoop]: 21 mSDtfsCounter, 15 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-04-18 18:49:49,463 INFO  L914         BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 42 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-04-18 18:49:49,542 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17915 states.
[2022-04-18 18:49:50,241 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17915 to 17915.
[2022-04-18 18:49:50,270 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 17915 states, 17742 states have (on average 3.9952091083305152) internal successors, (70883), 17914 states have internal predecessors, (70883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:49:50,341 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 17915 states to 17915 states and 70883 transitions.
[2022-04-18 18:49:50,341 INFO  L78                 Accepts]: Start accepts. Automaton has 17915 states and 70883 transitions. Word has length 4
[2022-04-18 18:49:50,341 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-04-18 18:49:50,341 INFO  L478      AbstractCegarLoop]: Abstraction has 17915 states and 70883 transitions.
[2022-04-18 18:49:50,341 INFO  L479      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:49:50,342 INFO  L276                IsEmpty]: Start isEmpty. Operand 17915 states and 70883 transitions.
[2022-04-18 18:49:50,342 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6
[2022-04-18 18:49:50,342 INFO  L491         BasicCegarLoop]: Found error trace
[2022-04-18 18:49:50,342 INFO  L499         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1]
[2022-04-18 18:49:50,342 WARN  L460      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2022-04-18 18:49:50,342 INFO  L403      AbstractCegarLoop]: === Iteration 3 === Targeting salethreadErr0ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] ===
[2022-04-18 18:49:50,343 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-04-18 18:49:50,343 INFO  L85        PathProgramCache]: Analyzing trace with hash 888325434, now seen corresponding path program 1 times
[2022-04-18 18:49:50,343 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-04-18 18:49:50,343 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514153247]
[2022-04-18 18:49:50,343 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-18 18:49:50,343 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-18 18:49:50,349 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-18 18:49:50,367 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-04-18 18:49:50,368 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-04-18 18:49:50,368 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514153247]
[2022-04-18 18:49:50,368 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514153247] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-18 18:49:50,368 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-18 18:49:50,368 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-04-18 18:49:50,369 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935967020]
[2022-04-18 18:49:50,369 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-04-18 18:49:50,369 INFO  L554      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-04-18 18:49:50,369 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-04-18 18:49:50,370 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-04-18 18:49:50,370 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-04-18 18:49:50,370 INFO  L87              Difference]: Start difference. First operand 17915 states and 70883 transitions. Second operand  has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:49:50,680 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-04-18 18:49:50,681 INFO  L93              Difference]: Finished difference Result 21275 states and 76687 transitions.
[2022-04-18 18:49:50,681 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-04-18 18:49:50,681 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5
[2022-04-18 18:49:50,682 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-04-18 18:49:50,792 INFO  L225             Difference]: With dead ends: 21275
[2022-04-18 18:49:50,792 INFO  L226             Difference]: Without dead ends: 21275
[2022-04-18 18:49:50,793 INFO  L912         BasicCegarLoop]: 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
[2022-04-18 18:49:50,793 INFO  L913         BasicCegarLoop]: 22 mSDtfsCounter, 44 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-04-18 18:49:50,794 INFO  L914         BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 37 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-04-18 18:49:50,847 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21275 states.
[2022-04-18 18:49:51,331 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21275 to 16050.
[2022-04-18 18:49:51,358 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 16050 states, 15905 states have (on average 3.9143036780886513) internal successors, (62257), 16049 states have internal predecessors, (62257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:49:51,424 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16050 states to 16050 states and 62257 transitions.
[2022-04-18 18:49:51,424 INFO  L78                 Accepts]: Start accepts. Automaton has 16050 states and 62257 transitions. Word has length 5
[2022-04-18 18:49:51,424 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-04-18 18:49:51,424 INFO  L478      AbstractCegarLoop]: Abstraction has 16050 states and 62257 transitions.
[2022-04-18 18:49:51,425 INFO  L479      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:49:51,425 INFO  L276                IsEmpty]: Start isEmpty. Operand 16050 states and 62257 transitions.
[2022-04-18 18:49:51,425 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2022-04-18 18:49:51,425 INFO  L491         BasicCegarLoop]: Found error trace
[2022-04-18 18:49:51,425 INFO  L499         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2022-04-18 18:49:51,425 WARN  L460      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2022-04-18 18:49:51,425 INFO  L403      AbstractCegarLoop]: === Iteration 4 === Targeting salethreadErr1ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] ===
[2022-04-18 18:49:51,426 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-04-18 18:49:51,426 INFO  L85        PathProgramCache]: Analyzing trace with hash -1017703629, now seen corresponding path program 1 times
[2022-04-18 18:49:51,426 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-04-18 18:49:51,426 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806386063]
[2022-04-18 18:49:51,426 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-18 18:49:51,427 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-18 18:49:51,436 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-18 18:49:51,446 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-04-18 18:49:51,446 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-04-18 18:49:51,446 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806386063]
[2022-04-18 18:49:51,446 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806386063] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-18 18:49:51,446 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-18 18:49:51,447 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-04-18 18:49:51,447 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913270781]
[2022-04-18 18:49:51,447 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-04-18 18:49:51,447 INFO  L554      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-04-18 18:49:51,447 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-04-18 18:49:51,448 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-04-18 18:49:51,448 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-04-18 18:49:51,448 INFO  L87              Difference]: Start difference. First operand 16050 states and 62257 transitions. Second operand  has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:49:51,760 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-04-18 18:49:51,760 INFO  L93              Difference]: Finished difference Result 16573 states and 58896 transitions.
[2022-04-18 18:49:51,761 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-04-18 18:49:51,761 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7
[2022-04-18 18:49:51,761 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-04-18 18:49:51,806 INFO  L225             Difference]: With dead ends: 16573
[2022-04-18 18:49:51,806 INFO  L226             Difference]: Without dead ends: 15688
[2022-04-18 18:49:51,807 INFO  L912         BasicCegarLoop]: 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
[2022-04-18 18:49:51,807 INFO  L913         BasicCegarLoop]: 26 mSDtfsCounter, 42 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-04-18 18:49:51,808 INFO  L914         BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 36 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-04-18 18:49:51,839 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15688 states.
[2022-04-18 18:49:52,229 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15688 to 12942.
[2022-04-18 18:49:52,250 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 12942 states, 12853 states have (on average 3.6479421146813973) internal successors, (46887), 12941 states have internal predecessors, (46887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:49:52,300 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12942 states to 12942 states and 46887 transitions.
[2022-04-18 18:49:52,300 INFO  L78                 Accepts]: Start accepts. Automaton has 12942 states and 46887 transitions. Word has length 7
[2022-04-18 18:49:52,301 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-04-18 18:49:52,301 INFO  L478      AbstractCegarLoop]: Abstraction has 12942 states and 46887 transitions.
[2022-04-18 18:49:52,301 INFO  L479      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:49:52,301 INFO  L276                IsEmpty]: Start isEmpty. Operand 12942 states and 46887 transitions.
[2022-04-18 18:49:52,303 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2022-04-18 18:49:52,303 INFO  L491         BasicCegarLoop]: Found error trace
[2022-04-18 18:49:52,303 INFO  L499         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-04-18 18:49:52,303 WARN  L460      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2022-04-18 18:49:52,303 INFO  L403      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] ===
[2022-04-18 18:49:52,304 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-04-18 18:49:52,304 INFO  L85        PathProgramCache]: Analyzing trace with hash -43288976, now seen corresponding path program 1 times
[2022-04-18 18:49:52,304 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-04-18 18:49:52,304 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241009469]
[2022-04-18 18:49:52,304 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-18 18:49:52,305 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-18 18:49:52,320 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-18 18:49:52,339 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-04-18 18:49:52,339 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-04-18 18:49:52,339 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241009469]
[2022-04-18 18:49:52,339 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241009469] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-18 18:49:52,340 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-18 18:49:52,340 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-04-18 18:49:52,340 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30247748]
[2022-04-18 18:49:52,340 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-04-18 18:49:52,341 INFO  L554      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-04-18 18:49:52,341 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-04-18 18:49:52,342 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-04-18 18:49:52,342 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-04-18 18:49:52,342 INFO  L87              Difference]: Start difference. First operand 12942 states and 46887 transitions. Second operand  has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:49:52,603 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-04-18 18:49:52,603 INFO  L93              Difference]: Finished difference Result 10192 states and 36548 transitions.
[2022-04-18 18:49:52,603 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-04-18 18:49:52,604 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 14
[2022-04-18 18:49:52,604 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-04-18 18:49:52,631 INFO  L225             Difference]: With dead ends: 10192
[2022-04-18 18:49:52,631 INFO  L226             Difference]: Without dead ends: 10186
[2022-04-18 18:49:52,631 INFO  L912         BasicCegarLoop]: 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
[2022-04-18 18:49:52,632 INFO  L913         BasicCegarLoop]: 37 mSDtfsCounter, 41 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-04-18 18:49:52,632 INFO  L914         BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 58 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-04-18 18:49:52,652 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10186 states.
[2022-04-18 18:49:52,864 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10186 to 10066.
[2022-04-18 18:49:52,878 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10066 states, 9999 states have (on average 3.6286628662866285) internal successors, (36283), 10065 states have internal predecessors, (36283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:49:52,909 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10066 states to 10066 states and 36283 transitions.
[2022-04-18 18:49:52,909 INFO  L78                 Accepts]: Start accepts. Automaton has 10066 states and 36283 transitions. Word has length 14
[2022-04-18 18:49:52,909 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-04-18 18:49:52,909 INFO  L478      AbstractCegarLoop]: Abstraction has 10066 states and 36283 transitions.
[2022-04-18 18:49:52,909 INFO  L479      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:49:52,910 INFO  L276                IsEmpty]: Start isEmpty. Operand 10066 states and 36283 transitions.
[2022-04-18 18:49:52,911 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2022-04-18 18:49:52,911 INFO  L491         BasicCegarLoop]: Found error trace
[2022-04-18 18:49:52,911 INFO  L499         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-04-18 18:49:52,911 WARN  L460      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2022-04-18 18:49:52,912 INFO  L403      AbstractCegarLoop]: === Iteration 6 === Targeting salethreadErr0ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] ===
[2022-04-18 18:49:52,912 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-04-18 18:49:52,912 INFO  L85        PathProgramCache]: Analyzing trace with hash 443477234, now seen corresponding path program 1 times
[2022-04-18 18:49:52,912 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-04-18 18:49:52,912 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375705908]
[2022-04-18 18:49:52,912 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-18 18:49:52,913 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-18 18:49:52,931 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-18 18:49:52,947 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-04-18 18:49:52,947 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-04-18 18:49:52,947 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375705908]
[2022-04-18 18:49:52,948 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375705908] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-18 18:49:52,948 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-18 18:49:52,948 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-04-18 18:49:52,948 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461844747]
[2022-04-18 18:49:52,948 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-04-18 18:49:52,949 INFO  L554      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-04-18 18:49:52,949 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-04-18 18:49:52,949 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-04-18 18:49:52,949 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-04-18 18:49:52,950 INFO  L87              Difference]: Start difference. First operand 10066 states and 36283 transitions. Second operand  has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:49:53,049 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-04-18 18:49:53,049 INFO  L93              Difference]: Finished difference Result 9758 states and 31790 transitions.
[2022-04-18 18:49:53,055 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-04-18 18:49:53,056 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15
[2022-04-18 18:49:53,056 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-04-18 18:49:53,081 INFO  L225             Difference]: With dead ends: 9758
[2022-04-18 18:49:53,081 INFO  L226             Difference]: Without dead ends: 9758
[2022-04-18 18:49:53,081 INFO  L912         BasicCegarLoop]: 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
[2022-04-18 18:49:53,082 INFO  L913         BasicCegarLoop]: 20 mSDtfsCounter, 32 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-04-18 18:49:53,082 INFO  L914         BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 40 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-04-18 18:49:53,101 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9758 states.
[2022-04-18 18:49:53,249 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9758 to 8994.
[2022-04-18 18:49:53,261 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8994 states, 8942 states have (on average 3.3626705435025723) internal successors, (30069), 8993 states have internal predecessors, (30069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:49:53,436 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8994 states to 8994 states and 30069 transitions.
[2022-04-18 18:49:53,436 INFO  L78                 Accepts]: Start accepts. Automaton has 8994 states and 30069 transitions. Word has length 15
[2022-04-18 18:49:53,437 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-04-18 18:49:53,437 INFO  L478      AbstractCegarLoop]: Abstraction has 8994 states and 30069 transitions.
[2022-04-18 18:49:53,437 INFO  L479      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:49:53,437 INFO  L276                IsEmpty]: Start isEmpty. Operand 8994 states and 30069 transitions.
[2022-04-18 18:49:53,439 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2022-04-18 18:49:53,439 INFO  L491         BasicCegarLoop]: Found error trace
[2022-04-18 18:49:53,439 INFO  L499         BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1]
[2022-04-18 18:49:53,439 WARN  L460      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12
[2022-04-18 18:49:53,439 INFO  L403      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] ===
[2022-04-18 18:49:53,440 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-04-18 18:49:53,440 INFO  L85        PathProgramCache]: Analyzing trace with hash 524668496, now seen corresponding path program 1 times
[2022-04-18 18:49:53,440 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-04-18 18:49:53,440 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058089467]
[2022-04-18 18:49:53,440 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-18 18:49:53,441 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-18 18:49:53,454 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-04-18 18:49:53,454 INFO  L352             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2022-04-18 18:49:53,461 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-04-18 18:49:53,466 INFO  L130   FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace
[2022-04-18 18:49:53,466 INFO  L618         BasicCegarLoop]: Counterexample is feasible
[2022-04-18 18:49:53,466 INFO  L788   garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining)
[2022-04-18 18:49:53,466 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining)
[2022-04-18 18:49:53,467 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr1ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining)
[2022-04-18 18:49:53,467 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr2ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining)
[2022-04-18 18:49:53,467 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr3ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining)
[2022-04-18 18:49:53,467 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining)
[2022-04-18 18:49:53,467 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining)
[2022-04-18 18:49:53,467 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining)
[2022-04-18 18:49:53,468 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining)
[2022-04-18 18:49:53,468 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining)
[2022-04-18 18:49:53,468 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr0ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining)
[2022-04-18 18:49:53,468 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr1ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining)
[2022-04-18 18:49:53,468 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr2ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining)
[2022-04-18 18:49:53,468 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr3ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining)
[2022-04-18 18:49:53,469 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr0ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining)
[2022-04-18 18:49:53,469 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining)
[2022-04-18 18:49:53,469 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr2ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining)
[2022-04-18 18:49:53,469 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr3ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining)
[2022-04-18 18:49:53,469 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining)
[2022-04-18 18:49:53,469 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr1ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining)
[2022-04-18 18:49:53,470 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr2ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining)
[2022-04-18 18:49:53,470 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location salethreadErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining)
[2022-04-18 18:49:53,470 WARN  L460      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13
[2022-04-18 18:49:53,470 INFO  L719         BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1]
[2022-04-18 18:49:53,470 WARN  L232   ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis
[2022-04-18 18:49:53,471 INFO  L504   ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances.
[2022-04-18 18:49:53,489 INFO  L135    ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions.
[2022-04-18 18:49:53,490 INFO  L339      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-04-18 18:49:53,491 INFO  L340      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP
[2022-04-18 18:49:53,491 INFO  L341      AbstractCegarLoop]: Starting to check reachability of 26 error locations.
[2022-04-18 18:49:53,492 INFO  L116   etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation.
[2022-04-18 18:49:53,502 INFO  L131   etLargeBlockEncoding]: Starting large block encoding on Petri net that has 142 places, 148 transitions, 340 flow
[2022-04-18 18:49:53,503 INFO  L110        LiptonReduction]: Starting Lipton reduction on Petri net that has 142 places, 148 transitions, 340 flow
[2022-04-18 18:49:53,503 INFO  L74            FinitePrefix]: Start finitePrefix. Operand has 142 places, 148 transitions, 340 flow
[2022-04-18 18:49:53,565 INFO  L129       PetriNetUnfolder]: 66/635 cut-off events.
[2022-04-18 18:49:53,565 INFO  L130       PetriNetUnfolder]: For 48/48 co-relation queries the response was YES.
[2022-04-18 18:49:53,571 INFO  L84            FinitePrefix]: Finished finitePrefix Result has 690 conditions, 635 events. 66/635 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2540 event pairs, 6 based on Foata normal form. 0/518 useless extension candidates. Maximal degree in co-relation 380. Up to 32 conditions per place. 
[2022-04-18 18:49:53,589 INFO  L116        LiptonReduction]: Number of co-enabled transitions 10440
[2022-04-18 18:49:56,121 INFO  L131        LiptonReduction]: Checked pairs total: 52637
[2022-04-18 18:49:56,121 INFO  L133        LiptonReduction]: Total number of compositions: 154
[2022-04-18 18:49:56,122 INFO  L111   iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 77 places, 79 transitions, 202 flow
[2022-04-18 18:50:08,209 INFO  L133   iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result  has 409660 states, 404520 states have (on average 4.970770295659053) internal successors, (2010776), 409659 states have internal predecessors, (2010776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:50:08,940 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 409660 states, 404520 states have (on average 4.970770295659053) internal successors, (2010776), 409659 states have internal predecessors, (2010776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:50:08,941 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2
[2022-04-18 18:50:08,941 INFO  L491         BasicCegarLoop]: Found error trace
[2022-04-18 18:50:08,941 INFO  L499         BasicCegarLoop]: trace histogram [1]
[2022-04-18 18:50:08,941 INFO  L403      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 23 more)] ===
[2022-04-18 18:50:08,945 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-04-18 18:50:08,945 INFO  L85        PathProgramCache]: Analyzing trace with hash 1243, now seen corresponding path program 1 times
[2022-04-18 18:50:08,945 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-04-18 18:50:08,945 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954655234]
[2022-04-18 18:50:08,946 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-18 18:50:08,946 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-18 18:50:08,949 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-18 18:50:08,950 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-04-18 18:50:08,951 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-04-18 18:50:08,951 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954655234]
[2022-04-18 18:50:08,951 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954655234] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-18 18:50:08,951 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-18 18:50:08,951 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0
[2022-04-18 18:50:08,951 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027761609]
[2022-04-18 18:50:08,952 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-04-18 18:50:08,952 INFO  L554      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-04-18 18:50:08,952 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-04-18 18:50:08,961 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-04-18 18:50:08,961 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-04-18 18:50:09,685 INFO  L87              Difference]: Start difference. First operand  has 409660 states, 404520 states have (on average 4.970770295659053) internal successors, (2010776), 409659 states have internal predecessors, (2010776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:50:14,200 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-04-18 18:50:14,201 INFO  L93              Difference]: Finished difference Result 197847 states and 970353 transitions.
[2022-04-18 18:50:14,201 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-04-18 18:50:14,201 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1
[2022-04-18 18:50:14,201 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-04-18 18:50:16,047 INFO  L225             Difference]: With dead ends: 197847
[2022-04-18 18:50:16,047 INFO  L226             Difference]: Without dead ends: 195688
[2022-04-18 18:50:16,047 INFO  L912         BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-04-18 18:50:16,048 INFO  L913         BasicCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-04-18 18:50:16,048 INFO  L914         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-04-18 18:50:17,171 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 195688 states.
[2022-04-18 18:50:23,445 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 195688 to 195688.
[2022-04-18 18:50:23,873 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 195688 states, 195031 states have (on average 4.914470007332167) internal successors, (958474), 195687 states have internal predecessors, (958474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:50:26,618 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 195688 states to 195688 states and 958474 transitions.
[2022-04-18 18:50:26,619 INFO  L78                 Accepts]: Start accepts. Automaton has 195688 states and 958474 transitions. Word has length 1
[2022-04-18 18:50:26,619 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-04-18 18:50:26,619 INFO  L478      AbstractCegarLoop]: Abstraction has 195688 states and 958474 transitions.
[2022-04-18 18:50:26,619 INFO  L479      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:50:26,619 INFO  L276                IsEmpty]: Start isEmpty. Operand 195688 states and 958474 transitions.
[2022-04-18 18:50:26,620 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5
[2022-04-18 18:50:26,620 INFO  L491         BasicCegarLoop]: Found error trace
[2022-04-18 18:50:26,620 INFO  L499         BasicCegarLoop]: trace histogram [1, 1, 1, 1]
[2022-04-18 18:50:26,620 WARN  L460      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14
[2022-04-18 18:50:26,620 INFO  L403      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [salethreadErr0ASSERT_VIOLATIONDATA_RACE, salethreadErr1ASSERT_VIOLATIONDATA_RACE, salethreadErr2ASSERT_VIOLATIONDATA_RACE (and 23 more)] ===
[2022-04-18 18:50:26,621 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-04-18 18:50:26,621 INFO  L85        PathProgramCache]: Analyzing trace with hash 38600003, now seen corresponding path program 1 times
[2022-04-18 18:50:26,621 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-04-18 18:50:26,621 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692405738]
[2022-04-18 18:50:26,621 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-18 18:50:26,621 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-18 18:50:26,627 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-18 18:50:26,640 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-04-18 18:50:26,641 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-04-18 18:50:26,641 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692405738]
[2022-04-18 18:50:26,641 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692405738] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-18 18:50:26,641 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-18 18:50:26,641 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-04-18 18:50:26,644 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33744208]
[2022-04-18 18:50:26,644 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-04-18 18:50:26,645 INFO  L554      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-04-18 18:50:26,645 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-04-18 18:50:26,645 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-04-18 18:50:26,645 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-04-18 18:50:26,645 INFO  L87              Difference]: Start difference. First operand 195688 states and 958474 transitions. Second operand  has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:50:29,201 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-04-18 18:50:29,202 INFO  L93              Difference]: Finished difference Result 195688 states and 958473 transitions.
[2022-04-18 18:50:29,202 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-04-18 18:50:29,202 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4
[2022-04-18 18:50:29,202 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.