./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/weaver/popl20-three-array-min.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-three-array-min.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3e185f9c0dac86cdbb29caae2de39811a090d813c08c4c3552062c2aa77b8788 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 21:52:09,240 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 21:52:09,241 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 21:52:09,275 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 21:52:09,285 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 21:52:09,287 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 21:52:09,289 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 21:52:09,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 21:52:09,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 21:52:09,295 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 21:52:09,296 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 21:52:09,298 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 21:52:09,298 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 21:52:09,299 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 21:52:09,300 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 21:52:09,305 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 21:52:09,306 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 21:52:09,307 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 21:52:09,308 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 21:52:09,312 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 21:52:09,313 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 21:52:09,313 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 21:52:09,314 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 21:52:09,314 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 21:52:09,319 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 21:52:09,319 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 21:52:09,319 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 21:52:09,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 21:52:09,321 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 21:52:09,321 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 21:52:09,322 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 21:52:09,329 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 21:52:09,330 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 21:52:09,331 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 21:52:09,332 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 21:52:09,332 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 21:52:09,332 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 21:52:09,332 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 21:52:09,333 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 21:52:09,333 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 21:52:09,334 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 21:52:09,335 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-31 21:52:09,359 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 21:52:09,359 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 21:52:09,360 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 21:52:09,360 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 21:52:09,361 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 21:52:09,361 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 21:52:09,361 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 21:52:09,362 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 21:52:09,362 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 21:52:09,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 21:52:09,362 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 21:52:09,363 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 21:52:09,363 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 21:52:09,363 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 21:52:09,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 21:52:09,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 21:52:09,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 21:52:09,363 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 21:52:09,364 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-31 21:52:09,364 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 21:52:09,364 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 21:52:09,364 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 21:52:09,364 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 21:52:09,364 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 21:52:09,364 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 21:52:09,365 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 21:52:09,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 21:52:09,365 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 21:52:09,365 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 21:52:09,365 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 21:52:09,365 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 21:52:09,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 21:52:09,366 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 21:52:09,366 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 21:52:09,366 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 21:52:09,366 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 21:52:09,366 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 21:52:09,366 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e185f9c0dac86cdbb29caae2de39811a090d813c08c4c3552062c2aa77b8788 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 21:52:09,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 21:52:09,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 21:52:09,580 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 21:52:09,580 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 21:52:09,581 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 21:52:09,581 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-three-array-min.wvr.c [2023-08-31 21:52:10,502 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 21:52:10,668 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 21:52:10,669 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-min.wvr.c [2023-08-31 21:52:10,677 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a5797464/a931242660d547ab88fc75904a79adf3/FLAGb06469d2a [2023-08-31 21:52:10,685 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a5797464/a931242660d547ab88fc75904a79adf3 [2023-08-31 21:52:10,687 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 21:52:10,689 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 21:52:10,691 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 21:52:10,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 21:52:10,693 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 21:52:10,694 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 09:52:10" (1/1) ... [2023-08-31 21:52:10,695 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e975495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:52:10, skipping insertion in model container [2023-08-31 21:52:10,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 09:52:10" (1/1) ... [2023-08-31 21:52:10,699 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 21:52:10,719 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 21:52:10,860 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-min.wvr.c[2815,2828] [2023-08-31 21:52:10,865 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 21:52:10,871 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 21:52:10,893 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-min.wvr.c[2815,2828] [2023-08-31 21:52:10,896 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 21:52:10,902 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 21:52:10,902 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 21:52:10,906 INFO L208 MainTranslator]: Completed translation [2023-08-31 21:52:10,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:52:10 WrapperNode [2023-08-31 21:52:10,907 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 21:52:10,907 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 21:52:10,908 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 21:52:10,908 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 21:52:10,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:52:10" (1/1) ... [2023-08-31 21:52:10,921 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:52:10" (1/1) ... [2023-08-31 21:52:10,962 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 375 [2023-08-31 21:52:10,962 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 21:52:10,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 21:52:10,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 21:52:10,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 21:52:10,970 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:52:10" (1/1) ... [2023-08-31 21:52:10,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:52:10" (1/1) ... [2023-08-31 21:52:10,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:52:10" (1/1) ... [2023-08-31 21:52:10,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:52:10" (1/1) ... [2023-08-31 21:52:11,001 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:52:10" (1/1) ... [2023-08-31 21:52:11,022 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:52:10" (1/1) ... [2023-08-31 21:52:11,024 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:52:10" (1/1) ... [2023-08-31 21:52:11,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:52:10" (1/1) ... [2023-08-31 21:52:11,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 21:52:11,034 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 21:52:11,034 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 21:52:11,034 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 21:52:11,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:52:10" (1/1) ... [2023-08-31 21:52:11,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 21:52:11,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 21:52:11,056 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-31 21:52:11,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 21:52:11,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 21:52:11,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 21:52:11,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 21:52:11,101 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-31 21:52:11,101 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-31 21:52:11,101 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-31 21:52:11,101 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-31 21:52:11,101 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-31 21:52:11,101 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-31 21:52:11,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 21:52:11,102 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 21:52:11,102 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 21:52:11,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-31 21:52:11,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 21:52:11,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 21:52:11,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 21:52:11,103 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 21:52:11,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-31 21:52:11,248 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 21:52:11,250 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 21:52:11,779 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 21:52:11,906 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 21:52:11,907 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-31 21:52:11,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 09:52:11 BoogieIcfgContainer [2023-08-31 21:52:11,910 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 21:52:11,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 21:52:11,912 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 21:52:11,914 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 21:52:11,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 09:52:10" (1/3) ... [2023-08-31 21:52:11,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fe5ed96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 09:52:11, skipping insertion in model container [2023-08-31 21:52:11,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:52:10" (2/3) ... [2023-08-31 21:52:11,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fe5ed96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 09:52:11, skipping insertion in model container [2023-08-31 21:52:11,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 09:52:11" (3/3) ... [2023-08-31 21:52:11,916 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-min.wvr.c [2023-08-31 21:52:11,921 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 21:52:11,927 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 21:52:11,928 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 58 error locations. [2023-08-31 21:52:11,928 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 21:52:12,014 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-31 21:52:12,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 480 places, 497 transitions, 1018 flow [2023-08-31 21:52:12,191 INFO L130 PetriNetUnfolder]: 27/494 cut-off events. [2023-08-31 21:52:12,191 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 21:52:12,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 507 conditions, 494 events. 27/494 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 628 event pairs, 0 based on Foata normal form. 0/409 useless extension candidates. Maximal degree in co-relation 399. Up to 3 conditions per place. [2023-08-31 21:52:12,197 INFO L82 GeneralOperation]: Start removeDead. Operand has 480 places, 497 transitions, 1018 flow [2023-08-31 21:52:12,205 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 442 places, 456 transitions, 930 flow [2023-08-31 21:52:12,208 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 21:52:12,224 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 442 places, 456 transitions, 930 flow [2023-08-31 21:52:12,225 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 442 places, 456 transitions, 930 flow [2023-08-31 21:52:12,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 442 places, 456 transitions, 930 flow [2023-08-31 21:52:12,274 INFO L130 PetriNetUnfolder]: 24/456 cut-off events. [2023-08-31 21:52:12,275 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 21:52:12,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 469 conditions, 456 events. 24/456 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 621 event pairs, 0 based on Foata normal form. 0/375 useless extension candidates. Maximal degree in co-relation 399. Up to 3 conditions per place. [2023-08-31 21:52:12,282 INFO L119 LiptonReduction]: Number of co-enabled transitions 13362 [2023-08-31 21:52:34,665 INFO L134 LiptonReduction]: Checked pairs total: 104366 [2023-08-31 21:52:34,665 INFO L136 LiptonReduction]: Total number of compositions: 452 [2023-08-31 21:52:34,674 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 21:52:34,678 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@307c4b67, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 21:52:34,678 INFO L358 AbstractCegarLoop]: Starting to check reachability of 90 error locations. [2023-08-31 21:52:34,679 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-31 21:52:34,679 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 21:52:34,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:52:34,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-31 21:52:34,680 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2023-08-31 21:52:34,683 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:52:34,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1896, now seen corresponding path program 1 times [2023-08-31 21:52:34,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:52:34,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84959875] [2023-08-31 21:52:34,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:52:34,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:52:34,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:52:34,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 21:52:34,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:52:34,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84959875] [2023-08-31 21:52:34,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84959875] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 21:52:34,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 21:52:34,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-31 21:52:34,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296679592] [2023-08-31 21:52:34,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 21:52:34,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-31 21:52:34,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:52:34,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-31 21:52:34,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-31 21:52:34,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 455 out of 949 [2023-08-31 21:52:34,797 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 143 transitions, 304 flow. Second operand has 2 states, 2 states have (on average 455.5) internal successors, (911), 2 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:34,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:52:34,798 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 455 of 949 [2023-08-31 21:52:34,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 21:52:35,219 INFO L130 PetriNetUnfolder]: 1464/3602 cut-off events. [2023-08-31 21:52:35,220 INFO L131 PetriNetUnfolder]: For 93/93 co-relation queries the response was YES. [2023-08-31 21:52:35,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5638 conditions, 3602 events. 1464/3602 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 29406 event pairs, 753 based on Foata normal form. 531/3237 useless extension candidates. Maximal degree in co-relation 5158. Up to 1909 conditions per place. [2023-08-31 21:52:35,238 INFO L137 encePairwiseOnDemand]: 903/949 looper letters, 35 selfloop transitions, 0 changer transitions 1/97 dead transitions. [2023-08-31 21:52:35,238 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 97 transitions, 284 flow [2023-08-31 21:52:35,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-31 21:52:35,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-31 21:52:35,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 992 transitions. [2023-08-31 21:52:35,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5226554267650158 [2023-08-31 21:52:35,252 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 992 transitions. [2023-08-31 21:52:35,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 992 transitions. [2023-08-31 21:52:35,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 21:52:35,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 992 transitions. [2023-08-31 21:52:35,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 496.0) internal successors, (992), 2 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:35,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 949.0) internal successors, (2847), 3 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:35,267 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 949.0) internal successors, (2847), 3 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:35,268 INFO L175 Difference]: Start difference. First operand has 141 places, 143 transitions, 304 flow. Second operand 2 states and 992 transitions. [2023-08-31 21:52:35,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 97 transitions, 284 flow [2023-08-31 21:52:35,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 97 transitions, 272 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-31 21:52:35,274 INFO L231 Difference]: Finished difference. Result has 93 places, 96 transitions, 197 flow [2023-08-31 21:52:35,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=949, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=197, PETRI_PLACES=93, PETRI_TRANSITIONS=96} [2023-08-31 21:52:35,280 INFO L281 CegarLoopForPetriNet]: 141 programPoint places, -48 predicate places. [2023-08-31 21:52:35,282 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 96 transitions, 197 flow [2023-08-31 21:52:35,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 455.5) internal successors, (911), 2 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:35,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:52:35,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 21:52:35,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 21:52:35,284 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2023-08-31 21:52:35,290 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:52:35,291 INFO L85 PathProgramCache]: Analyzing trace with hash -938995998, now seen corresponding path program 1 times [2023-08-31 21:52:35,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:52:35,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686302596] [2023-08-31 21:52:35,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:52:35,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:52:35,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:52:35,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 21:52:35,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:52:35,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686302596] [2023-08-31 21:52:35,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686302596] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 21:52:35,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 21:52:35,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 21:52:35,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769166231] [2023-08-31 21:52:35,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 21:52:35,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 21:52:35,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:52:35,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 21:52:35,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 21:52:35,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 433 out of 949 [2023-08-31 21:52:35,548 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 96 transitions, 197 flow. Second operand has 3 states, 3 states have (on average 435.3333333333333) internal successors, (1306), 3 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:35,548 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:52:35,548 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 433 of 949 [2023-08-31 21:52:35,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 21:52:36,000 INFO L130 PetriNetUnfolder]: 2244/5346 cut-off events. [2023-08-31 21:52:36,001 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-08-31 21:52:36,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8513 conditions, 5346 events. 2244/5346 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 44393 event pairs, 1615 based on Foata normal form. 0/4332 useless extension candidates. Maximal degree in co-relation 8510. Up to 3097 conditions per place. [2023-08-31 21:52:36,020 INFO L137 encePairwiseOnDemand]: 945/949 looper letters, 38 selfloop transitions, 1 changer transitions 0/93 dead transitions. [2023-08-31 21:52:36,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 93 transitions, 269 flow [2023-08-31 21:52:36,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 21:52:36,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 21:52:36,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1341 transitions. [2023-08-31 21:52:36,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47102212855637515 [2023-08-31 21:52:36,023 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1341 transitions. [2023-08-31 21:52:36,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1341 transitions. [2023-08-31 21:52:36,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 21:52:36,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1341 transitions. [2023-08-31 21:52:36,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 447.0) internal successors, (1341), 3 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:36,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 949.0) internal successors, (3796), 4 states have internal predecessors, (3796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:36,031 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 949.0) internal successors, (3796), 4 states have internal predecessors, (3796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:36,031 INFO L175 Difference]: Start difference. First operand has 93 places, 96 transitions, 197 flow. Second operand 3 states and 1341 transitions. [2023-08-31 21:52:36,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 93 transitions, 269 flow [2023-08-31 21:52:36,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 93 transitions, 269 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 21:52:36,034 INFO L231 Difference]: Finished difference. Result has 91 places, 93 transitions, 193 flow [2023-08-31 21:52:36,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=949, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=193, PETRI_PLACES=91, PETRI_TRANSITIONS=93} [2023-08-31 21:52:36,035 INFO L281 CegarLoopForPetriNet]: 141 programPoint places, -50 predicate places. [2023-08-31 21:52:36,036 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 93 transitions, 193 flow [2023-08-31 21:52:36,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 435.3333333333333) internal successors, (1306), 3 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:36,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:52:36,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 21:52:36,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 21:52:36,037 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2023-08-31 21:52:36,039 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:52:36,039 INFO L85 PathProgramCache]: Analyzing trace with hash -431632596, now seen corresponding path program 1 times [2023-08-31 21:52:36,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:52:36,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3924681] [2023-08-31 21:52:36,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:52:36,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:52:36,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:52:36,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 21:52:36,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:52:36,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3924681] [2023-08-31 21:52:36,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3924681] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 21:52:36,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 21:52:36,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 21:52:36,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655872434] [2023-08-31 21:52:36,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 21:52:36,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 21:52:36,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:52:36,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 21:52:36,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 21:52:36,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 442 out of 949 [2023-08-31 21:52:36,131 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 93 transitions, 193 flow. Second operand has 3 states, 3 states have (on average 444.6666666666667) internal successors, (1334), 3 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:36,131 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:52:36,131 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 442 of 949 [2023-08-31 21:52:36,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 21:52:36,448 INFO L130 PetriNetUnfolder]: 1885/4239 cut-off events. [2023-08-31 21:52:36,448 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2023-08-31 21:52:36,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6769 conditions, 4239 events. 1885/4239 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 32940 event pairs, 1010 based on Foata normal form. 0/3294 useless extension candidates. Maximal degree in co-relation 6765. Up to 2453 conditions per place. [2023-08-31 21:52:36,464 INFO L137 encePairwiseOnDemand]: 946/949 looper letters, 37 selfloop transitions, 1 changer transitions 0/91 dead transitions. [2023-08-31 21:52:36,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 91 transitions, 265 flow [2023-08-31 21:52:36,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 21:52:36,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 21:52:36,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1366 transitions. [2023-08-31 21:52:36,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47980330172110996 [2023-08-31 21:52:36,468 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1366 transitions. [2023-08-31 21:52:36,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1366 transitions. [2023-08-31 21:52:36,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 21:52:36,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1366 transitions. [2023-08-31 21:52:36,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 455.3333333333333) internal successors, (1366), 3 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:36,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 949.0) internal successors, (3796), 4 states have internal predecessors, (3796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:36,499 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 949.0) internal successors, (3796), 4 states have internal predecessors, (3796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:36,499 INFO L175 Difference]: Start difference. First operand has 91 places, 93 transitions, 193 flow. Second operand 3 states and 1366 transitions. [2023-08-31 21:52:36,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 91 transitions, 265 flow [2023-08-31 21:52:36,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 91 transitions, 264 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 21:52:36,500 INFO L231 Difference]: Finished difference. Result has 90 places, 91 transitions, 190 flow [2023-08-31 21:52:36,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=949, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=90, PETRI_TRANSITIONS=91} [2023-08-31 21:52:36,501 INFO L281 CegarLoopForPetriNet]: 141 programPoint places, -51 predicate places. [2023-08-31 21:52:36,501 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 91 transitions, 190 flow [2023-08-31 21:52:36,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 444.6666666666667) internal successors, (1334), 3 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:36,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:52:36,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 21:52:36,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 21:52:36,503 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2023-08-31 21:52:36,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:52:36,503 INFO L85 PathProgramCache]: Analyzing trace with hash -96971984, now seen corresponding path program 1 times [2023-08-31 21:52:36,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:52:36,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356631970] [2023-08-31 21:52:36,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:52:36,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:52:36,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:52:36,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 21:52:36,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:52:36,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356631970] [2023-08-31 21:52:36,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356631970] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 21:52:36,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 21:52:36,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 21:52:36,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102013881] [2023-08-31 21:52:36,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 21:52:36,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 21:52:36,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:52:36,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 21:52:36,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 21:52:36,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 443 out of 949 [2023-08-31 21:52:36,719 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 91 transitions, 190 flow. Second operand has 3 states, 3 states have (on average 446.3333333333333) internal successors, (1339), 3 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:36,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:52:36,719 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 443 of 949 [2023-08-31 21:52:36,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 21:52:37,041 INFO L130 PetriNetUnfolder]: 1464/3422 cut-off events. [2023-08-31 21:52:37,041 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2023-08-31 21:52:37,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5387 conditions, 3422 events. 1464/3422 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 26774 event pairs, 753 based on Foata normal form. 0/2617 useless extension candidates. Maximal degree in co-relation 5383. Up to 1908 conditions per place. [2023-08-31 21:52:37,059 INFO L137 encePairwiseOnDemand]: 946/949 looper letters, 34 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2023-08-31 21:52:37,060 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 92 transitions, 264 flow [2023-08-31 21:52:37,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 21:52:37,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 21:52:37,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1366 transitions. [2023-08-31 21:52:37,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47980330172110996 [2023-08-31 21:52:37,064 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1366 transitions. [2023-08-31 21:52:37,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1366 transitions. [2023-08-31 21:52:37,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 21:52:37,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1366 transitions. [2023-08-31 21:52:37,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 455.3333333333333) internal successors, (1366), 3 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:37,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 949.0) internal successors, (3796), 4 states have internal predecessors, (3796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:37,071 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 949.0) internal successors, (3796), 4 states have internal predecessors, (3796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:37,071 INFO L175 Difference]: Start difference. First operand has 90 places, 91 transitions, 190 flow. Second operand 3 states and 1366 transitions. [2023-08-31 21:52:37,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 92 transitions, 264 flow [2023-08-31 21:52:37,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 92 transitions, 263 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 21:52:37,073 INFO L231 Difference]: Finished difference. Result has 92 places, 92 transitions, 201 flow [2023-08-31 21:52:37,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=949, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=201, PETRI_PLACES=92, PETRI_TRANSITIONS=92} [2023-08-31 21:52:37,075 INFO L281 CegarLoopForPetriNet]: 141 programPoint places, -49 predicate places. [2023-08-31 21:52:37,075 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 92 transitions, 201 flow [2023-08-31 21:52:37,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 446.3333333333333) internal successors, (1339), 3 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:37,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:52:37,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 21:52:37,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 21:52:37,076 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2023-08-31 21:52:37,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:52:37,077 INFO L85 PathProgramCache]: Analyzing trace with hash -41923511, now seen corresponding path program 1 times [2023-08-31 21:52:37,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:52:37,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070741867] [2023-08-31 21:52:37,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:52:37,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:52:37,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:52:37,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 21:52:37,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:52:37,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070741867] [2023-08-31 21:52:37,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070741867] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 21:52:37,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 21:52:37,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 21:52:37,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610117842] [2023-08-31 21:52:37,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 21:52:37,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 21:52:37,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:52:37,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 21:52:37,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 21:52:37,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 441 out of 949 [2023-08-31 21:52:37,249 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 92 transitions, 201 flow. Second operand has 4 states, 4 states have (on average 443.75) internal successors, (1775), 4 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:37,249 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:52:37,249 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 441 of 949 [2023-08-31 21:52:37,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 21:52:37,563 INFO L130 PetriNetUnfolder]: 1464/3424 cut-off events. [2023-08-31 21:52:37,563 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2023-08-31 21:52:37,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5397 conditions, 3424 events. 1464/3424 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 26804 event pairs, 753 based on Foata normal form. 0/2618 useless extension candidates. Maximal degree in co-relation 5392. Up to 1907 conditions per place. [2023-08-31 21:52:37,577 INFO L137 encePairwiseOnDemand]: 942/949 looper letters, 32 selfloop transitions, 6 changer transitions 0/94 dead transitions. [2023-08-31 21:52:37,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 94 transitions, 281 flow [2023-08-31 21:52:37,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 21:52:37,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 21:52:37,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1804 transitions. [2023-08-31 21:52:37,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47523709167544786 [2023-08-31 21:52:37,581 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1804 transitions. [2023-08-31 21:52:37,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1804 transitions. [2023-08-31 21:52:37,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 21:52:37,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1804 transitions. [2023-08-31 21:52:37,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 451.0) internal successors, (1804), 4 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:37,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 949.0) internal successors, (4745), 5 states have internal predecessors, (4745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:37,589 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 949.0) internal successors, (4745), 5 states have internal predecessors, (4745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:37,589 INFO L175 Difference]: Start difference. First operand has 92 places, 92 transitions, 201 flow. Second operand 4 states and 1804 transitions. [2023-08-31 21:52:37,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 94 transitions, 281 flow [2023-08-31 21:52:37,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 94 transitions, 277 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-31 21:52:37,591 INFO L231 Difference]: Finished difference. Result has 95 places, 94 transitions, 225 flow [2023-08-31 21:52:37,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=949, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=225, PETRI_PLACES=95, PETRI_TRANSITIONS=94} [2023-08-31 21:52:37,592 INFO L281 CegarLoopForPetriNet]: 141 programPoint places, -46 predicate places. [2023-08-31 21:52:37,592 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 94 transitions, 225 flow [2023-08-31 21:52:37,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 443.75) internal successors, (1775), 4 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:37,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:52:37,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 21:52:37,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 21:52:37,593 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2023-08-31 21:52:37,593 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:52:37,593 INFO L85 PathProgramCache]: Analyzing trace with hash 45779351, now seen corresponding path program 1 times [2023-08-31 21:52:37,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:52:37,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175457432] [2023-08-31 21:52:37,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:52:37,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:52:37,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:52:37,929 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 21:52:37,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:52:37,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175457432] [2023-08-31 21:52:37,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175457432] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 21:52:37,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 21:52:37,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 21:52:37,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934677751] [2023-08-31 21:52:37,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 21:52:37,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 21:52:37,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:52:37,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 21:52:37,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-31 21:52:38,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 434 out of 949 [2023-08-31 21:52:38,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 94 transitions, 225 flow. Second operand has 6 states, 6 states have (on average 437.0) internal successors, (2622), 6 states have internal predecessors, (2622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:38,323 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:52:38,323 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 434 of 949 [2023-08-31 21:52:38,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 21:52:39,647 INFO L130 PetriNetUnfolder]: 7780/12675 cut-off events. [2023-08-31 21:52:39,648 INFO L131 PetriNetUnfolder]: For 20/32 co-relation queries the response was YES. [2023-08-31 21:52:39,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22527 conditions, 12675 events. 7780/12675 cut-off events. For 20/32 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 91995 event pairs, 1991 based on Foata normal form. 4/9566 useless extension candidates. Maximal degree in co-relation 22521. Up to 5477 conditions per place. [2023-08-31 21:52:39,699 INFO L137 encePairwiseOnDemand]: 942/949 looper letters, 115 selfloop transitions, 9 changer transitions 0/174 dead transitions. [2023-08-31 21:52:39,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 174 transitions, 635 flow [2023-08-31 21:52:39,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 21:52:39,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 21:52:39,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2726 transitions. [2023-08-31 21:52:39,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47874956094134175 [2023-08-31 21:52:39,705 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2726 transitions. [2023-08-31 21:52:39,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2726 transitions. [2023-08-31 21:52:39,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 21:52:39,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2726 transitions. [2023-08-31 21:52:39,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 454.3333333333333) internal successors, (2726), 6 states have internal predecessors, (2726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:39,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 949.0) internal successors, (6643), 7 states have internal predecessors, (6643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:39,717 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 949.0) internal successors, (6643), 7 states have internal predecessors, (6643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:39,717 INFO L175 Difference]: Start difference. First operand has 95 places, 94 transitions, 225 flow. Second operand 6 states and 2726 transitions. [2023-08-31 21:52:39,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 174 transitions, 635 flow [2023-08-31 21:52:39,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 174 transitions, 634 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 21:52:39,721 INFO L231 Difference]: Finished difference. Result has 104 places, 102 transitions, 288 flow [2023-08-31 21:52:39,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=949, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=288, PETRI_PLACES=104, PETRI_TRANSITIONS=102} [2023-08-31 21:52:39,723 INFO L281 CegarLoopForPetriNet]: 141 programPoint places, -37 predicate places. [2023-08-31 21:52:39,723 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 102 transitions, 288 flow [2023-08-31 21:52:39,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 437.0) internal successors, (2622), 6 states have internal predecessors, (2622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:39,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:52:39,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 21:52:39,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 21:52:39,726 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2023-08-31 21:52:39,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:52:39,726 INFO L85 PathProgramCache]: Analyzing trace with hash 40373737, now seen corresponding path program 1 times [2023-08-31 21:52:39,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:52:39,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775594638] [2023-08-31 21:52:39,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:52:39,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:52:39,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:52:39,859 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 21:52:39,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:52:39,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775594638] [2023-08-31 21:52:39,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775594638] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 21:52:39,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682031774] [2023-08-31 21:52:39,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:52:39,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 21:52:39,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 21:52:39,862 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 21:52:39,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-31 21:52:40,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:52:40,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-31 21:52:40,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 21:52:40,103 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 21:52:40,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 21:52:40,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 21:52:40,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682031774] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 21:52:40,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 21:52:40,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-31 21:52:40,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410352001] [2023-08-31 21:52:40,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 21:52:40,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-31 21:52:40,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:52:40,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-31 21:52:40,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-08-31 21:52:40,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 431 out of 949 [2023-08-31 21:52:40,717 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 102 transitions, 288 flow. Second operand has 12 states, 12 states have (on average 432.6666666666667) internal successors, (5192), 12 states have internal predecessors, (5192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:40,717 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:52:40,718 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 431 of 949 [2023-08-31 21:52:40,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 21:52:42,116 INFO L130 PetriNetUnfolder]: 5656/11573 cut-off events. [2023-08-31 21:52:42,116 INFO L131 PetriNetUnfolder]: For 1492/1613 co-relation queries the response was YES. [2023-08-31 21:52:42,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21304 conditions, 11573 events. 5656/11573 cut-off events. For 1492/1613 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 100012 event pairs, 1979 based on Foata normal form. 29/9220 useless extension candidates. Maximal degree in co-relation 21294. Up to 3870 conditions per place. [2023-08-31 21:52:42,162 INFO L137 encePairwiseOnDemand]: 939/949 looper letters, 132 selfloop transitions, 21 changer transitions 0/212 dead transitions. [2023-08-31 21:52:42,163 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 212 transitions, 963 flow [2023-08-31 21:52:42,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 21:52:42,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 21:52:42,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 4441 transitions. [2023-08-31 21:52:42,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46796628029504744 [2023-08-31 21:52:42,170 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 4441 transitions. [2023-08-31 21:52:42,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 4441 transitions. [2023-08-31 21:52:42,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 21:52:42,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 4441 transitions. [2023-08-31 21:52:42,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 444.1) internal successors, (4441), 10 states have internal predecessors, (4441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:42,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 949.0) internal successors, (10439), 11 states have internal predecessors, (10439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:42,186 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 949.0) internal successors, (10439), 11 states have internal predecessors, (10439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:42,186 INFO L175 Difference]: Start difference. First operand has 104 places, 102 transitions, 288 flow. Second operand 10 states and 4441 transitions. [2023-08-31 21:52:42,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 212 transitions, 963 flow [2023-08-31 21:52:42,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 212 transitions, 963 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 21:52:42,196 INFO L231 Difference]: Finished difference. Result has 118 places, 117 transitions, 438 flow [2023-08-31 21:52:42,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=949, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=438, PETRI_PLACES=118, PETRI_TRANSITIONS=117} [2023-08-31 21:52:42,197 INFO L281 CegarLoopForPetriNet]: 141 programPoint places, -23 predicate places. [2023-08-31 21:52:42,197 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 117 transitions, 438 flow [2023-08-31 21:52:42,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 432.6666666666667) internal successors, (5192), 12 states have internal predecessors, (5192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:42,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:52:42,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 21:52:42,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-31 21:52:42,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 21:52:42,403 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2023-08-31 21:52:42,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:52:42,404 INFO L85 PathProgramCache]: Analyzing trace with hash 833024825, now seen corresponding path program 1 times [2023-08-31 21:52:42,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:52:42,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526345866] [2023-08-31 21:52:42,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:52:42,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:52:42,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:52:42,539 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 21:52:42,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:52:42,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526345866] [2023-08-31 21:52:42,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526345866] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 21:52:42,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540888538] [2023-08-31 21:52:42,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:52:42,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 21:52:42,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 21:52:42,541 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 21:52:42,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-31 21:52:42,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:52:42,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-31 21:52:42,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 21:52:42,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 21:52:42,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 21:52:42,785 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 21:52:42,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540888538] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 21:52:42,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 21:52:42,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-31 21:52:42,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592625626] [2023-08-31 21:52:42,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 21:52:42,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-31 21:52:42,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:52:42,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-31 21:52:42,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-08-31 21:52:43,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 431 out of 949 [2023-08-31 21:52:43,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 117 transitions, 438 flow. Second operand has 12 states, 12 states have (on average 433.1666666666667) internal successors, (5198), 12 states have internal predecessors, (5198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:43,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:52:43,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 431 of 949 [2023-08-31 21:52:43,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 21:52:44,219 INFO L130 PetriNetUnfolder]: 3944/8623 cut-off events. [2023-08-31 21:52:44,219 INFO L131 PetriNetUnfolder]: For 1921/2120 co-relation queries the response was YES. [2023-08-31 21:52:44,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16142 conditions, 8623 events. 3944/8623 cut-off events. For 1921/2120 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 74969 event pairs, 1345 based on Foata normal form. 66/7168 useless extension candidates. Maximal degree in co-relation 16127. Up to 3219 conditions per place. [2023-08-31 21:52:44,269 INFO L137 encePairwiseOnDemand]: 939/949 looper letters, 112 selfloop transitions, 21 changer transitions 0/194 dead transitions. [2023-08-31 21:52:44,269 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 194 transitions, 909 flow [2023-08-31 21:52:44,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 21:52:44,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 21:52:44,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 4441 transitions. [2023-08-31 21:52:44,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46796628029504744 [2023-08-31 21:52:44,277 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 4441 transitions. [2023-08-31 21:52:44,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 4441 transitions. [2023-08-31 21:52:44,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 21:52:44,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 4441 transitions. [2023-08-31 21:52:44,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 444.1) internal successors, (4441), 10 states have internal predecessors, (4441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:44,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 949.0) internal successors, (10439), 11 states have internal predecessors, (10439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:44,294 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 949.0) internal successors, (10439), 11 states have internal predecessors, (10439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:44,294 INFO L175 Difference]: Start difference. First operand has 118 places, 117 transitions, 438 flow. Second operand 10 states and 4441 transitions. [2023-08-31 21:52:44,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 194 transitions, 909 flow [2023-08-31 21:52:44,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 194 transitions, 887 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-08-31 21:52:44,306 INFO L231 Difference]: Finished difference. Result has 129 places, 120 transitions, 481 flow [2023-08-31 21:52:44,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=949, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=481, PETRI_PLACES=129, PETRI_TRANSITIONS=120} [2023-08-31 21:52:44,306 INFO L281 CegarLoopForPetriNet]: 141 programPoint places, -12 predicate places. [2023-08-31 21:52:44,306 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 120 transitions, 481 flow [2023-08-31 21:52:44,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 433.1666666666667) internal successors, (5198), 12 states have internal predecessors, (5198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:44,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:52:44,308 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 21:52:44,316 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-31 21:52:44,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-08-31 21:52:44,512 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2023-08-31 21:52:44,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:52:44,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1189619696, now seen corresponding path program 2 times [2023-08-31 21:52:44,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:52:44,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22415404] [2023-08-31 21:52:44,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:52:44,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:52:44,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:52:44,912 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-31 21:52:44,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:52:44,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22415404] [2023-08-31 21:52:44,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22415404] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 21:52:44,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 21:52:44,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 21:52:44,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286682453] [2023-08-31 21:52:44,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 21:52:44,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 21:52:44,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:52:44,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 21:52:44,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-31 21:52:45,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 427 out of 949 [2023-08-31 21:52:45,324 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 120 transitions, 481 flow. Second operand has 6 states, 6 states have (on average 429.5) internal successors, (2577), 6 states have internal predecessors, (2577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:45,324 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:52:45,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 427 of 949 [2023-08-31 21:52:45,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 21:52:47,335 INFO L130 PetriNetUnfolder]: 11834/19861 cut-off events. [2023-08-31 21:52:47,335 INFO L131 PetriNetUnfolder]: For 9325/9745 co-relation queries the response was YES. [2023-08-31 21:52:47,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46281 conditions, 19861 events. 11834/19861 cut-off events. For 9325/9745 co-relation queries the response was YES. Maximal size of possible extension queue 889. Compared 154800 event pairs, 2224 based on Foata normal form. 52/16967 useless extension candidates. Maximal degree in co-relation 46263. Up to 8760 conditions per place. [2023-08-31 21:52:47,452 INFO L137 encePairwiseOnDemand]: 933/949 looper letters, 119 selfloop transitions, 33 changer transitions 0/203 dead transitions. [2023-08-31 21:52:47,453 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 203 transitions, 1059 flow [2023-08-31 21:52:47,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 21:52:47,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 21:52:47,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2677 transitions. [2023-08-31 21:52:47,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4701440112399016 [2023-08-31 21:52:47,458 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2677 transitions. [2023-08-31 21:52:47,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2677 transitions. [2023-08-31 21:52:47,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 21:52:47,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2677 transitions. [2023-08-31 21:52:47,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 446.1666666666667) internal successors, (2677), 6 states have internal predecessors, (2677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:47,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 949.0) internal successors, (6643), 7 states have internal predecessors, (6643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:47,467 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 949.0) internal successors, (6643), 7 states have internal predecessors, (6643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:47,468 INFO L175 Difference]: Start difference. First operand has 129 places, 120 transitions, 481 flow. Second operand 6 states and 2677 transitions. [2023-08-31 21:52:47,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 203 transitions, 1059 flow [2023-08-31 21:52:47,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 203 transitions, 1038 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-31 21:52:47,698 INFO L231 Difference]: Finished difference. Result has 136 places, 152 transitions, 766 flow [2023-08-31 21:52:47,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=949, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=766, PETRI_PLACES=136, PETRI_TRANSITIONS=152} [2023-08-31 21:52:47,698 INFO L281 CegarLoopForPetriNet]: 141 programPoint places, -5 predicate places. [2023-08-31 21:52:47,699 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 152 transitions, 766 flow [2023-08-31 21:52:47,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 429.5) internal successors, (2577), 6 states have internal predecessors, (2577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:47,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:52:47,699 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 21:52:47,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 21:52:47,699 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err7ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2023-08-31 21:52:47,700 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:52:47,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1776508583, now seen corresponding path program 1 times [2023-08-31 21:52:47,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:52:47,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310509455] [2023-08-31 21:52:47,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:52:47,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:52:47,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:52:47,744 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-31 21:52:47,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:52:47,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310509455] [2023-08-31 21:52:47,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310509455] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 21:52:47,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 21:52:47,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 21:52:47,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626187758] [2023-08-31 21:52:47,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 21:52:47,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 21:52:47,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:52:47,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 21:52:47,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 21:52:47,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 447 out of 949 [2023-08-31 21:52:47,756 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 152 transitions, 766 flow. Second operand has 3 states, 3 states have (on average 450.6666666666667) internal successors, (1352), 3 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:47,756 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:52:47,756 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 447 of 949 [2023-08-31 21:52:47,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 21:52:50,206 INFO L130 PetriNetUnfolder]: 12047/23688 cut-off events. [2023-08-31 21:52:50,207 INFO L131 PetriNetUnfolder]: For 21973/23919 co-relation queries the response was YES. [2023-08-31 21:52:50,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60309 conditions, 23688 events. 12047/23688 cut-off events. For 21973/23919 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 216867 event pairs, 2210 based on Foata normal form. 102/20698 useless extension candidates. Maximal degree in co-relation 60286. Up to 9117 conditions per place. [2023-08-31 21:52:50,341 INFO L137 encePairwiseOnDemand]: 945/949 looper letters, 124 selfloop transitions, 6 changer transitions 0/200 dead transitions. [2023-08-31 21:52:50,341 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 200 transitions, 1338 flow [2023-08-31 21:52:50,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 21:52:50,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 21:52:50,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1399 transitions. [2023-08-31 21:52:50,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4913944502985599 [2023-08-31 21:52:50,344 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1399 transitions. [2023-08-31 21:52:50,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1399 transitions. [2023-08-31 21:52:50,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 21:52:50,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1399 transitions. [2023-08-31 21:52:50,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 466.3333333333333) internal successors, (1399), 3 states have internal predecessors, (1399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:50,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 949.0) internal successors, (3796), 4 states have internal predecessors, (3796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:50,350 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 949.0) internal successors, (3796), 4 states have internal predecessors, (3796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:50,350 INFO L175 Difference]: Start difference. First operand has 136 places, 152 transitions, 766 flow. Second operand 3 states and 1399 transitions. [2023-08-31 21:52:50,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 200 transitions, 1338 flow [2023-08-31 21:52:50,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 200 transitions, 1338 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 21:52:50,426 INFO L231 Difference]: Finished difference. Result has 138 places, 155 transitions, 810 flow [2023-08-31 21:52:50,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=949, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=810, PETRI_PLACES=138, PETRI_TRANSITIONS=155} [2023-08-31 21:52:50,427 INFO L281 CegarLoopForPetriNet]: 141 programPoint places, -3 predicate places. [2023-08-31 21:52:50,427 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 155 transitions, 810 flow [2023-08-31 21:52:50,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 450.6666666666667) internal successors, (1352), 3 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:50,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:52:50,427 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 21:52:50,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 21:52:50,428 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err8ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2023-08-31 21:52:50,428 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:52:50,428 INFO L85 PathProgramCache]: Analyzing trace with hash -762799491, now seen corresponding path program 1 times [2023-08-31 21:52:50,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:52:50,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442939276] [2023-08-31 21:52:50,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:52:50,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:52:50,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:52:50,470 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-31 21:52:50,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:52:50,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442939276] [2023-08-31 21:52:50,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442939276] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 21:52:50,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 21:52:50,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 21:52:50,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464788045] [2023-08-31 21:52:50,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 21:52:50,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 21:52:50,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:52:50,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 21:52:50,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 21:52:50,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 442 out of 949 [2023-08-31 21:52:50,482 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 155 transitions, 810 flow. Second operand has 3 states, 3 states have (on average 446.0) internal successors, (1338), 3 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:50,482 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:52:50,482 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 442 of 949 [2023-08-31 21:52:50,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 21:52:52,576 INFO L130 PetriNetUnfolder]: 13053/24004 cut-off events. [2023-08-31 21:52:52,576 INFO L131 PetriNetUnfolder]: For 27770/29935 co-relation queries the response was YES. [2023-08-31 21:52:52,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63973 conditions, 24004 events. 13053/24004 cut-off events. For 27770/29935 co-relation queries the response was YES. Maximal size of possible extension queue 769. Compared 208030 event pairs, 5272 based on Foata normal form. 118/21391 useless extension candidates. Maximal degree in co-relation 63949. Up to 16252 conditions per place. [2023-08-31 21:52:52,924 INFO L137 encePairwiseOnDemand]: 946/949 looper letters, 85 selfloop transitions, 2 changer transitions 0/153 dead transitions. [2023-08-31 21:52:52,924 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 153 transitions, 980 flow [2023-08-31 21:52:52,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 21:52:52,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 21:52:52,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1365 transitions. [2023-08-31 21:52:52,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4794520547945205 [2023-08-31 21:52:52,927 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1365 transitions. [2023-08-31 21:52:52,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1365 transitions. [2023-08-31 21:52:52,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 21:52:52,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1365 transitions. [2023-08-31 21:52:52,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 455.0) internal successors, (1365), 3 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:52,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 949.0) internal successors, (3796), 4 states have internal predecessors, (3796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:52,933 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 949.0) internal successors, (3796), 4 states have internal predecessors, (3796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:52,933 INFO L175 Difference]: Start difference. First operand has 138 places, 155 transitions, 810 flow. Second operand 3 states and 1365 transitions. [2023-08-31 21:52:52,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 153 transitions, 980 flow [2023-08-31 21:52:53,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 153 transitions, 974 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 21:52:53,014 INFO L231 Difference]: Finished difference. Result has 137 places, 153 transitions, 804 flow [2023-08-31 21:52:53,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=949, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=804, PETRI_PLACES=137, PETRI_TRANSITIONS=153} [2023-08-31 21:52:53,014 INFO L281 CegarLoopForPetriNet]: 141 programPoint places, -4 predicate places. [2023-08-31 21:52:53,014 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 153 transitions, 804 flow [2023-08-31 21:52:53,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 446.0) internal successors, (1338), 3 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:53,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:52:53,015 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 21:52:53,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 21:52:53,015 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2023-08-31 21:52:53,015 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:52:53,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1535335502, now seen corresponding path program 2 times [2023-08-31 21:52:53,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:52:53,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624407823] [2023-08-31 21:52:53,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:52:53,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:52:53,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:52:53,617 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-31 21:52:53,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:52:53,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624407823] [2023-08-31 21:52:53,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624407823] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 21:52:53,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 21:52:53,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 21:52:53,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329442680] [2023-08-31 21:52:53,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 21:52:53,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 21:52:53,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:52:53,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 21:52:53,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-08-31 21:52:54,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 422 out of 949 [2023-08-31 21:52:54,909 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 153 transitions, 804 flow. Second operand has 11 states, 11 states have (on average 423.8181818181818) internal successors, (4662), 11 states have internal predecessors, (4662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:54,909 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:52:54,909 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 422 of 949 [2023-08-31 21:52:54,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 21:52:58,846 INFO L130 PetriNetUnfolder]: 22244/33780 cut-off events. [2023-08-31 21:52:58,846 INFO L131 PetriNetUnfolder]: For 37833/42289 co-relation queries the response was YES. [2023-08-31 21:52:58,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96442 conditions, 33780 events. 22244/33780 cut-off events. For 37833/42289 co-relation queries the response was YES. Maximal size of possible extension queue 987. Compared 246358 event pairs, 2231 based on Foata normal form. 1686/31596 useless extension candidates. Maximal degree in co-relation 96417. Up to 9892 conditions per place. [2023-08-31 21:52:59,044 INFO L137 encePairwiseOnDemand]: 943/949 looper letters, 218 selfloop transitions, 8 changer transitions 0/284 dead transitions. [2023-08-31 21:52:59,044 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 284 transitions, 1948 flow [2023-08-31 21:52:59,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 21:52:59,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 21:52:59,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3067 transitions. [2023-08-31 21:52:59,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4616889959355713 [2023-08-31 21:52:59,049 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3067 transitions. [2023-08-31 21:52:59,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3067 transitions. [2023-08-31 21:52:59,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 21:52:59,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3067 transitions. [2023-08-31 21:52:59,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 438.14285714285717) internal successors, (3067), 7 states have internal predecessors, (3067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:59,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 949.0) internal successors, (7592), 8 states have internal predecessors, (7592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:59,059 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 949.0) internal successors, (7592), 8 states have internal predecessors, (7592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:59,059 INFO L175 Difference]: Start difference. First operand has 137 places, 153 transitions, 804 flow. Second operand 7 states and 3067 transitions. [2023-08-31 21:52:59,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 284 transitions, 1948 flow [2023-08-31 21:52:59,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 284 transitions, 1939 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 21:52:59,295 INFO L231 Difference]: Finished difference. Result has 140 places, 152 transitions, 807 flow [2023-08-31 21:52:59,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=949, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=807, PETRI_PLACES=140, PETRI_TRANSITIONS=152} [2023-08-31 21:52:59,296 INFO L281 CegarLoopForPetriNet]: 141 programPoint places, -1 predicate places. [2023-08-31 21:52:59,296 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 152 transitions, 807 flow [2023-08-31 21:52:59,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 423.8181818181818) internal successors, (4662), 11 states have internal predecessors, (4662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:52:59,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:52:59,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 21:52:59,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 21:52:59,297 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2023-08-31 21:52:59,297 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:52:59,297 INFO L85 PathProgramCache]: Analyzing trace with hash 879521503, now seen corresponding path program 1 times [2023-08-31 21:52:59,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:52:59,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753681511] [2023-08-31 21:52:59,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:52:59,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:52:59,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:52:59,595 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 21:52:59,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:52:59,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753681511] [2023-08-31 21:52:59,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753681511] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 21:52:59,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 21:52:59,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 21:52:59,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996052525] [2023-08-31 21:52:59,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 21:52:59,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 21:52:59,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:52:59,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 21:52:59,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-31 21:53:00,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 434 out of 949 [2023-08-31 21:53:00,025 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 152 transitions, 807 flow. Second operand has 6 states, 6 states have (on average 437.5) internal successors, (2625), 6 states have internal predecessors, (2625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:53:00,026 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:53:00,026 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 434 of 949 [2023-08-31 21:53:00,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 21:53:02,709 INFO L130 PetriNetUnfolder]: 13363/24568 cut-off events. [2023-08-31 21:53:02,709 INFO L131 PetriNetUnfolder]: For 27373/29559 co-relation queries the response was YES. [2023-08-31 21:53:02,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64879 conditions, 24568 events. 13363/24568 cut-off events. For 27373/29559 co-relation queries the response was YES. Maximal size of possible extension queue 758. Compared 213838 event pairs, 4730 based on Foata normal form. 158/21908 useless extension candidates. Maximal degree in co-relation 64855. Up to 15323 conditions per place. [2023-08-31 21:53:02,880 INFO L137 encePairwiseOnDemand]: 942/949 looper letters, 120 selfloop transitions, 13 changer transitions 0/194 dead transitions. [2023-08-31 21:53:02,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 194 transitions, 1230 flow [2023-08-31 21:53:02,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 21:53:02,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 21:53:02,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2680 transitions. [2023-08-31 21:53:02,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47067088162978576 [2023-08-31 21:53:02,885 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2680 transitions. [2023-08-31 21:53:02,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2680 transitions. [2023-08-31 21:53:02,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 21:53:02,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2680 transitions. [2023-08-31 21:53:02,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 446.6666666666667) internal successors, (2680), 6 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:53:02,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 949.0) internal successors, (6643), 7 states have internal predecessors, (6643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:53:02,893 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 949.0) internal successors, (6643), 7 states have internal predecessors, (6643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:53:02,893 INFO L175 Difference]: Start difference. First operand has 140 places, 152 transitions, 807 flow. Second operand 6 states and 2680 transitions. [2023-08-31 21:53:02,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 194 transitions, 1230 flow [2023-08-31 21:53:03,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 194 transitions, 1216 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-31 21:53:03,098 INFO L231 Difference]: Finished difference. Result has 145 places, 164 transitions, 919 flow [2023-08-31 21:53:03,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=949, PETRI_DIFFERENCE_MINUEND_FLOW=793, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=919, PETRI_PLACES=145, PETRI_TRANSITIONS=164} [2023-08-31 21:53:03,099 INFO L281 CegarLoopForPetriNet]: 141 programPoint places, 4 predicate places. [2023-08-31 21:53:03,099 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 164 transitions, 919 flow [2023-08-31 21:53:03,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 437.5) internal successors, (2625), 6 states have internal predecessors, (2625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:53:03,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:53:03,100 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 21:53:03,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-31 21:53:03,100 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2023-08-31 21:53:03,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:53:03,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1444693734, now seen corresponding path program 1 times [2023-08-31 21:53:03,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:53:03,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129562934] [2023-08-31 21:53:03,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:53:03,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:53:03,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:53:04,146 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-31 21:53:04,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:53:04,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129562934] [2023-08-31 21:53:04,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129562934] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 21:53:04,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 21:53:04,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 21:53:04,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533986801] [2023-08-31 21:53:04,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 21:53:04,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 21:53:04,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:53:04,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 21:53:04,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-08-31 21:53:05,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 416 out of 949 [2023-08-31 21:53:05,604 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 164 transitions, 919 flow. Second operand has 11 states, 11 states have (on average 417.6363636363636) internal successors, (4594), 11 states have internal predecessors, (4594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:53:05,604 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:53:05,604 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 416 of 949 [2023-08-31 21:53:05,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 21:53:11,565 INFO L130 PetriNetUnfolder]: 32231/53088 cut-off events. [2023-08-31 21:53:11,565 INFO L131 PetriNetUnfolder]: For 63786/70155 co-relation queries the response was YES. [2023-08-31 21:53:11,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146750 conditions, 53088 events. 32231/53088 cut-off events. For 63786/70155 co-relation queries the response was YES. Maximal size of possible extension queue 1192. Compared 441690 event pairs, 4866 based on Foata normal form. 517/47913 useless extension candidates. Maximal degree in co-relation 146722. Up to 12418 conditions per place. [2023-08-31 21:53:11,984 INFO L137 encePairwiseOnDemand]: 936/949 looper letters, 282 selfloop transitions, 72 changer transitions 0/409 dead transitions. [2023-08-31 21:53:11,984 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 409 transitions, 3256 flow [2023-08-31 21:53:11,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-31 21:53:11,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-31 21:53:11,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4729 transitions. [2023-08-31 21:53:11,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45301274068397357 [2023-08-31 21:53:11,989 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4729 transitions. [2023-08-31 21:53:11,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4729 transitions. [2023-08-31 21:53:11,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 21:53:11,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4729 transitions. [2023-08-31 21:53:11,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 429.90909090909093) internal successors, (4729), 11 states have internal predecessors, (4729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:53:12,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 949.0) internal successors, (11388), 12 states have internal predecessors, (11388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:53:12,002 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 949.0) internal successors, (11388), 12 states have internal predecessors, (11388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:53:12,002 INFO L175 Difference]: Start difference. First operand has 145 places, 164 transitions, 919 flow. Second operand 11 states and 4729 transitions. [2023-08-31 21:53:12,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 409 transitions, 3256 flow [2023-08-31 21:53:12,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 409 transitions, 3200 flow, removed 28 selfloop flow, removed 0 redundant places. [2023-08-31 21:53:12,119 INFO L231 Difference]: Finished difference. Result has 158 places, 217 transitions, 1652 flow [2023-08-31 21:53:12,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=949, PETRI_DIFFERENCE_MINUEND_FLOW=899, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1652, PETRI_PLACES=158, PETRI_TRANSITIONS=217} [2023-08-31 21:53:12,119 INFO L281 CegarLoopForPetriNet]: 141 programPoint places, 17 predicate places. [2023-08-31 21:53:12,119 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 217 transitions, 1652 flow [2023-08-31 21:53:12,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 417.6363636363636) internal successors, (4594), 11 states have internal predecessors, (4594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:53:12,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:53:12,120 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 21:53:12,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-31 21:53:12,120 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2023-08-31 21:53:12,121 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:53:12,121 INFO L85 PathProgramCache]: Analyzing trace with hash 652334830, now seen corresponding path program 2 times [2023-08-31 21:53:12,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:53:12,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939485828] [2023-08-31 21:53:12,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:53:12,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:53:12,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:53:13,132 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-31 21:53:13,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:53:13,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939485828] [2023-08-31 21:53:13,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939485828] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 21:53:13,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 21:53:13,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 21:53:13,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407457360] [2023-08-31 21:53:13,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 21:53:13,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 21:53:13,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:53:13,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 21:53:13,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-08-31 21:53:13,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 949 [2023-08-31 21:53:13,940 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 217 transitions, 1652 flow. Second operand has 9 states, 9 states have (on average 421.77777777777777) internal successors, (3796), 9 states have internal predecessors, (3796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:53:13,940 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:53:13,940 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 949 [2023-08-31 21:53:13,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 21:53:21,239 INFO L130 PetriNetUnfolder]: 35182/63962 cut-off events. [2023-08-31 21:53:21,239 INFO L131 PetriNetUnfolder]: For 151393/160587 co-relation queries the response was YES. [2023-08-31 21:53:21,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189903 conditions, 63962 events. 35182/63962 cut-off events. For 151393/160587 co-relation queries the response was YES. Maximal size of possible extension queue 1780. Compared 611493 event pairs, 5324 based on Foata normal form. 400/57482 useless extension candidates. Maximal degree in co-relation 189870. Up to 29752 conditions per place. [2023-08-31 21:53:21,881 INFO L137 encePairwiseOnDemand]: 937/949 looper letters, 220 selfloop transitions, 124 changer transitions 0/407 dead transitions. [2023-08-31 21:53:21,881 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 407 transitions, 3851 flow [2023-08-31 21:53:21,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 21:53:21,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 21:53:21,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 4325 transitions. [2023-08-31 21:53:21,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45574288724973655 [2023-08-31 21:53:21,886 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 4325 transitions. [2023-08-31 21:53:21,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 4325 transitions. [2023-08-31 21:53:21,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 21:53:21,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 4325 transitions. [2023-08-31 21:53:21,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 432.5) internal successors, (4325), 10 states have internal predecessors, (4325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:53:21,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 949.0) internal successors, (10439), 11 states have internal predecessors, (10439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:53:21,898 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 949.0) internal successors, (10439), 11 states have internal predecessors, (10439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:53:21,898 INFO L175 Difference]: Start difference. First operand has 158 places, 217 transitions, 1652 flow. Second operand 10 states and 4325 transitions. [2023-08-31 21:53:21,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 407 transitions, 3851 flow [2023-08-31 21:53:22,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 407 transitions, 3835 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-31 21:53:22,322 INFO L231 Difference]: Finished difference. Result has 166 places, 296 transitions, 3065 flow [2023-08-31 21:53:22,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=949, PETRI_DIFFERENCE_MINUEND_FLOW=1636, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3065, PETRI_PLACES=166, PETRI_TRANSITIONS=296} [2023-08-31 21:53:22,323 INFO L281 CegarLoopForPetriNet]: 141 programPoint places, 25 predicate places. [2023-08-31 21:53:22,323 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 296 transitions, 3065 flow [2023-08-31 21:53:22,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 421.77777777777777) internal successors, (3796), 9 states have internal predecessors, (3796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:53:22,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:53:22,323 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 21:53:22,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-31 21:53:22,324 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err9ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2023-08-31 21:53:22,324 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:53:22,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1546112379, now seen corresponding path program 1 times [2023-08-31 21:53:22,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:53:22,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996455346] [2023-08-31 21:53:22,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:53:22,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:53:22,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:53:22,606 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-31 21:53:22,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:53:22,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996455346] [2023-08-31 21:53:22,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996455346] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 21:53:22,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 21:53:22,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 21:53:22,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302988160] [2023-08-31 21:53:22,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 21:53:22,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 21:53:22,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:53:22,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 21:53:22,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-31 21:53:22,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 427 out of 949 [2023-08-31 21:53:22,987 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 296 transitions, 3065 flow. Second operand has 6 states, 6 states have (on average 429.8333333333333) internal successors, (2579), 6 states have internal predecessors, (2579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:53:22,987 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:53:22,988 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 427 of 949 [2023-08-31 21:53:22,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 21:53:35,047 INFO L130 PetriNetUnfolder]: 62433/96027 cut-off events. [2023-08-31 21:53:35,047 INFO L131 PetriNetUnfolder]: For 355734/365399 co-relation queries the response was YES. [2023-08-31 21:53:35,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321300 conditions, 96027 events. 62433/96027 cut-off events. For 355734/365399 co-relation queries the response was YES. Maximal size of possible extension queue 2349. Compared 793816 event pairs, 14336 based on Foata normal form. 811/85729 useless extension candidates. Maximal degree in co-relation 321264. Up to 53489 conditions per place. [2023-08-31 21:53:36,123 INFO L137 encePairwiseOnDemand]: 935/949 looper letters, 272 selfloop transitions, 145 changer transitions 0/478 dead transitions. [2023-08-31 21:53:36,123 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 478 transitions, 5987 flow [2023-08-31 21:53:36,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 21:53:36,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 21:53:36,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2672 transitions. [2023-08-31 21:53:36,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46926589392342816 [2023-08-31 21:53:36,127 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2672 transitions. [2023-08-31 21:53:36,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2672 transitions. [2023-08-31 21:53:36,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 21:53:36,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2672 transitions. [2023-08-31 21:53:36,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 445.3333333333333) internal successors, (2672), 6 states have internal predecessors, (2672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:53:36,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 949.0) internal successors, (6643), 7 states have internal predecessors, (6643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:53:36,132 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 949.0) internal successors, (6643), 7 states have internal predecessors, (6643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:53:36,132 INFO L175 Difference]: Start difference. First operand has 166 places, 296 transitions, 3065 flow. Second operand 6 states and 2672 transitions. [2023-08-31 21:53:36,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 478 transitions, 5987 flow [2023-08-31 21:53:37,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 478 transitions, 5703 flow, removed 134 selfloop flow, removed 4 redundant places. [2023-08-31 21:53:37,611 INFO L231 Difference]: Finished difference. Result has 172 places, 430 transitions, 5409 flow [2023-08-31 21:53:37,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=949, PETRI_DIFFERENCE_MINUEND_FLOW=2941, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5409, PETRI_PLACES=172, PETRI_TRANSITIONS=430} [2023-08-31 21:53:37,611 INFO L281 CegarLoopForPetriNet]: 141 programPoint places, 31 predicate places. [2023-08-31 21:53:37,612 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 430 transitions, 5409 flow [2023-08-31 21:53:37,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 429.8333333333333) internal successors, (2579), 6 states have internal predecessors, (2579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:53:37,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:53:37,612 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 21:53:37,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-31 21:53:37,612 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2023-08-31 21:53:37,613 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:53:37,613 INFO L85 PathProgramCache]: Analyzing trace with hash 996210625, now seen corresponding path program 3 times [2023-08-31 21:53:37,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:53:37,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917615824] [2023-08-31 21:53:37,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:53:37,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:53:37,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:53:37,751 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 21:53:37,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:53:37,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917615824] [2023-08-31 21:53:37,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917615824] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 21:53:37,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840114262] [2023-08-31 21:53:37,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 21:53:37,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 21:53:37,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 21:53:37,753 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 21:53:37,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-31 21:53:37,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-31 21:53:37,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 21:53:37,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 67 conjunts are in the unsatisfiable core [2023-08-31 21:53:37,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 21:53:38,030 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-31 21:53:38,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-31 21:53:38,061 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-31 21:53:38,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-31 21:53:38,093 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-08-31 21:53:38,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-08-31 21:53:38,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-31 21:53:38,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-08-31 21:53:38,236 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 21:53:38,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-08-31 21:53:38,268 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 21:53:38,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2023-08-31 21:53:38,339 INFO L321 Elim1Store]: treesize reduction 83, result has 36.6 percent of original size [2023-08-31 21:53:38,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 93 treesize of output 116 [2023-08-31 21:53:38,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 94 [2023-08-31 21:53:40,422 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-31 21:53:40,422 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 21:53:40,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840114262] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 21:53:40,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 21:53:40,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 16 [2023-08-31 21:53:40,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566052566] [2023-08-31 21:53:40,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 21:53:40,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 21:53:40,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:53:40,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 21:53:40,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=225, Unknown=1, NotChecked=0, Total=272 [2023-08-31 21:53:41,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 949 [2023-08-31 21:53:41,424 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 430 transitions, 5409 flow. Second operand has 11 states, 11 states have (on average 329.90909090909093) internal successors, (3629), 11 states have internal predecessors, (3629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:53:41,424 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:53:41,424 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 949 [2023-08-31 21:53:41,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 21:54:11,214 INFO L130 PetriNetUnfolder]: 182963/242498 cut-off events. [2023-08-31 21:54:11,214 INFO L131 PetriNetUnfolder]: For 604957/606806 co-relation queries the response was YES. [2023-08-31 21:54:13,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 819847 conditions, 242498 events. 182963/242498 cut-off events. For 604957/606806 co-relation queries the response was YES. Maximal size of possible extension queue 5610. Compared 1752198 event pairs, 32363 based on Foata normal form. 663/217598 useless extension candidates. Maximal degree in co-relation 819807. Up to 176901 conditions per place. [2023-08-31 21:54:14,252 INFO L137 encePairwiseOnDemand]: 938/949 looper letters, 488 selfloop transitions, 38 changer transitions 1/544 dead transitions. [2023-08-31 21:54:14,252 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 544 transitions, 7318 flow [2023-08-31 21:54:14,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 21:54:14,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 21:54:14,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3423 transitions. [2023-08-31 21:54:14,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.360695468914647 [2023-08-31 21:54:14,257 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3423 transitions. [2023-08-31 21:54:14,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3423 transitions. [2023-08-31 21:54:14,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 21:54:14,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3423 transitions. [2023-08-31 21:54:14,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 342.3) internal successors, (3423), 10 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:54:14,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 949.0) internal successors, (10439), 11 states have internal predecessors, (10439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:54:14,265 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 949.0) internal successors, (10439), 11 states have internal predecessors, (10439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:54:14,266 INFO L175 Difference]: Start difference. First operand has 172 places, 430 transitions, 5409 flow. Second operand 10 states and 3423 transitions. [2023-08-31 21:54:14,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 544 transitions, 7318 flow [2023-08-31 21:54:29,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 544 transitions, 7102 flow, removed 108 selfloop flow, removed 0 redundant places. [2023-08-31 21:54:29,464 INFO L231 Difference]: Finished difference. Result has 180 places, 428 transitions, 5259 flow [2023-08-31 21:54:29,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=949, PETRI_DIFFERENCE_MINUEND_FLOW=5185, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5259, PETRI_PLACES=180, PETRI_TRANSITIONS=428} [2023-08-31 21:54:29,465 INFO L281 CegarLoopForPetriNet]: 141 programPoint places, 39 predicate places. [2023-08-31 21:54:29,465 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 428 transitions, 5259 flow [2023-08-31 21:54:29,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 329.90909090909093) internal successors, (3629), 11 states have internal predecessors, (3629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:54:29,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:54:29,466 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 21:54:29,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-31 21:54:29,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 21:54:29,670 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2023-08-31 21:54:29,670 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:54:29,670 INFO L85 PathProgramCache]: Analyzing trace with hash -76855390, now seen corresponding path program 1 times [2023-08-31 21:54:29,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:54:29,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688583773] [2023-08-31 21:54:29,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:54:29,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:54:29,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:54:29,784 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 21:54:29,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:54:29,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688583773] [2023-08-31 21:54:29,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688583773] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 21:54:29,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619684824] [2023-08-31 21:54:29,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:54:29,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 21:54:29,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 21:54:29,786 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 21:54:29,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-31 21:54:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:54:30,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-31 21:54:30,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 21:54:30,093 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 21:54:30,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 21:54:30,145 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 21:54:30,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619684824] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 21:54:30,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 21:54:30,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2023-08-31 21:54:30,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164951250] [2023-08-31 21:54:30,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 21:54:30,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 21:54:30,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:54:30,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 21:54:30,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-08-31 21:54:30,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 431 out of 949 [2023-08-31 21:54:30,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 428 transitions, 5259 flow. Second operand has 6 states, 6 states have (on average 434.3333333333333) internal successors, (2606), 6 states have internal predecessors, (2606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:54:30,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:54:30,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 431 of 949 [2023-08-31 21:54:30,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 21:54:38,657 INFO L130 PetriNetUnfolder]: 39837/68978 cut-off events. [2023-08-31 21:54:38,657 INFO L131 PetriNetUnfolder]: For 363205/373362 co-relation queries the response was YES. [2023-08-31 21:54:39,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255775 conditions, 68978 events. 39837/68978 cut-off events. For 363205/373362 co-relation queries the response was YES. Maximal size of possible extension queue 1740. Compared 624329 event pairs, 9666 based on Foata normal form. 580/60797 useless extension candidates. Maximal degree in co-relation 255734. Up to 43330 conditions per place. [2023-08-31 21:54:39,850 INFO L137 encePairwiseOnDemand]: 938/949 looper letters, 342 selfloop transitions, 32 changer transitions 15/463 dead transitions. [2023-08-31 21:54:39,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 463 transitions, 6195 flow [2023-08-31 21:54:39,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 21:54:39,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 21:54:39,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2662 transitions. [2023-08-31 21:54:39,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4675096592904812 [2023-08-31 21:54:39,853 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2662 transitions. [2023-08-31 21:54:39,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2662 transitions. [2023-08-31 21:54:39,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 21:54:39,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2662 transitions. [2023-08-31 21:54:39,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 443.6666666666667) internal successors, (2662), 6 states have internal predecessors, (2662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:54:39,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 949.0) internal successors, (6643), 7 states have internal predecessors, (6643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:54:39,858 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 949.0) internal successors, (6643), 7 states have internal predecessors, (6643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:54:39,858 INFO L175 Difference]: Start difference. First operand has 180 places, 428 transitions, 5259 flow. Second operand 6 states and 2662 transitions. [2023-08-31 21:54:39,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 463 transitions, 6195 flow [2023-08-31 21:54:40,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 463 transitions, 6117 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-08-31 21:54:40,963 INFO L231 Difference]: Finished difference. Result has 177 places, 412 transitions, 5111 flow [2023-08-31 21:54:40,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=949, PETRI_DIFFERENCE_MINUEND_FLOW=5067, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5111, PETRI_PLACES=177, PETRI_TRANSITIONS=412} [2023-08-31 21:54:40,963 INFO L281 CegarLoopForPetriNet]: 141 programPoint places, 36 predicate places. [2023-08-31 21:54:40,964 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 412 transitions, 5111 flow [2023-08-31 21:54:40,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 434.3333333333333) internal successors, (2606), 6 states have internal predecessors, (2606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:54:40,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:54:40,964 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 21:54:40,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-31 21:54:41,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-31 21:54:41,169 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err9ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2023-08-31 21:54:41,169 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:54:41,169 INFO L85 PathProgramCache]: Analyzing trace with hash -635835217, now seen corresponding path program 1 times [2023-08-31 21:54:41,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:54:41,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006136226] [2023-08-31 21:54:41,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:54:41,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:54:41,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:54:42,755 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-31 21:54:42,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:54:42,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006136226] [2023-08-31 21:54:42,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006136226] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 21:54:42,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 21:54:42,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 21:54:42,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655448570] [2023-08-31 21:54:42,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 21:54:42,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-31 21:54:42,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:54:42,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-31 21:54:42,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-31 21:54:43,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 422 out of 949 [2023-08-31 21:54:43,443 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 412 transitions, 5111 flow. Second operand has 8 states, 8 states have (on average 424.25) internal successors, (3394), 8 states have internal predecessors, (3394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:54:43,443 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:54:43,443 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 422 of 949 [2023-08-31 21:54:43,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 21:54:54,683 INFO L130 PetriNetUnfolder]: 45906/78373 cut-off events. [2023-08-31 21:54:54,683 INFO L131 PetriNetUnfolder]: For 430291/449972 co-relation queries the response was YES. [2023-08-31 21:54:55,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294151 conditions, 78373 events. 45906/78373 cut-off events. For 430291/449972 co-relation queries the response was YES. Maximal size of possible extension queue 2279. Compared 717405 event pairs, 6985 based on Foata normal form. 1379/71167 useless extension candidates. Maximal degree in co-relation 294108. Up to 19787 conditions per place. [2023-08-31 21:54:55,778 INFO L137 encePairwiseOnDemand]: 937/949 looper letters, 516 selfloop transitions, 96 changer transitions 0/679 dead transitions. [2023-08-31 21:54:55,778 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 679 transitions, 9386 flow [2023-08-31 21:54:55,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 21:54:55,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 21:54:55,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 4359 transitions. [2023-08-31 21:54:55,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45932560590094834 [2023-08-31 21:54:55,782 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 4359 transitions. [2023-08-31 21:54:55,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 4359 transitions. [2023-08-31 21:54:55,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 21:54:55,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 4359 transitions. [2023-08-31 21:54:55,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 435.9) internal successors, (4359), 10 states have internal predecessors, (4359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:54:55,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 949.0) internal successors, (10439), 11 states have internal predecessors, (10439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:54:55,790 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 949.0) internal successors, (10439), 11 states have internal predecessors, (10439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:54:55,790 INFO L175 Difference]: Start difference. First operand has 177 places, 412 transitions, 5111 flow. Second operand 10 states and 4359 transitions. [2023-08-31 21:54:55,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 679 transitions, 9386 flow [2023-08-31 21:54:57,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 679 transitions, 9321 flow, removed 15 selfloop flow, removed 5 redundant places. [2023-08-31 21:54:57,266 INFO L231 Difference]: Finished difference. Result has 177 places, 425 transitions, 5512 flow [2023-08-31 21:54:57,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=949, PETRI_DIFFERENCE_MINUEND_FLOW=5061, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5512, PETRI_PLACES=177, PETRI_TRANSITIONS=425} [2023-08-31 21:54:57,267 INFO L281 CegarLoopForPetriNet]: 141 programPoint places, 36 predicate places. [2023-08-31 21:54:57,267 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 425 transitions, 5512 flow [2023-08-31 21:54:57,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 424.25) internal successors, (3394), 8 states have internal predecessors, (3394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:54:57,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:54:57,268 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 21:54:57,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-31 21:54:57,268 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err9ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2023-08-31 21:54:57,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:54:57,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1305572275, now seen corresponding path program 2 times [2023-08-31 21:54:57,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:54:57,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387248551] [2023-08-31 21:54:57,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:54:57,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:54:57,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:54:58,094 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-31 21:54:58,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:54:58,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387248551] [2023-08-31 21:54:58,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387248551] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 21:54:58,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 21:54:58,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 21:54:58,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782080565] [2023-08-31 21:54:58,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 21:54:58,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-31 21:54:58,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:54:58,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-31 21:54:58,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-31 21:54:58,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 422 out of 949 [2023-08-31 21:54:58,916 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 425 transitions, 5512 flow. Second operand has 8 states, 8 states have (on average 424.25) internal successors, (3394), 8 states have internal predecessors, (3394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:54:58,916 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:54:58,916 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 422 of 949 [2023-08-31 21:54:58,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 21:55:09,756 INFO L130 PetriNetUnfolder]: 45812/79598 cut-off events. [2023-08-31 21:55:09,756 INFO L131 PetriNetUnfolder]: For 431670/447489 co-relation queries the response was YES. [2023-08-31 21:55:10,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296268 conditions, 79598 events. 45812/79598 cut-off events. For 431670/447489 co-relation queries the response was YES. Maximal size of possible extension queue 2254. Compared 745399 event pairs, 9872 based on Foata normal form. 2233/73497 useless extension candidates. Maximal degree in co-relation 296226. Up to 33790 conditions per place. [2023-08-31 21:55:10,739 INFO L137 encePairwiseOnDemand]: 938/949 looper letters, 299 selfloop transitions, 204 changer transitions 0/570 dead transitions. [2023-08-31 21:55:10,739 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 570 transitions, 7724 flow [2023-08-31 21:55:10,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 21:55:10,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 21:55:10,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 4351 transitions. [2023-08-31 21:55:10,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4584826132771338 [2023-08-31 21:55:10,742 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 4351 transitions. [2023-08-31 21:55:10,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 4351 transitions. [2023-08-31 21:55:10,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 21:55:10,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 4351 transitions. [2023-08-31 21:55:10,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 435.1) internal successors, (4351), 10 states have internal predecessors, (4351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:55:10,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 949.0) internal successors, (10439), 11 states have internal predecessors, (10439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:55:10,750 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 949.0) internal successors, (10439), 11 states have internal predecessors, (10439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:55:10,750 INFO L175 Difference]: Start difference. First operand has 177 places, 425 transitions, 5512 flow. Second operand 10 states and 4351 transitions. [2023-08-31 21:55:10,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 570 transitions, 7724 flow [2023-08-31 21:55:11,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 570 transitions, 7713 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-31 21:55:11,965 INFO L231 Difference]: Finished difference. Result has 185 places, 441 transitions, 6356 flow [2023-08-31 21:55:11,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=949, PETRI_DIFFERENCE_MINUEND_FLOW=5501, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6356, PETRI_PLACES=185, PETRI_TRANSITIONS=441} [2023-08-31 21:55:11,966 INFO L281 CegarLoopForPetriNet]: 141 programPoint places, 44 predicate places. [2023-08-31 21:55:11,966 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 441 transitions, 6356 flow [2023-08-31 21:55:11,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 424.25) internal successors, (3394), 8 states have internal predecessors, (3394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:55:11,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:55:11,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 21:55:11,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-31 21:55:11,967 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2023-08-31 21:55:11,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:55:11,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1945410320, now seen corresponding path program 1 times [2023-08-31 21:55:11,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:55:11,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960317993] [2023-08-31 21:55:11,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:55:11,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:55:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:55:12,311 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 21:55:12,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:55:12,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960317993] [2023-08-31 21:55:12,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960317993] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 21:55:12,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 21:55:12,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 21:55:12,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101030173] [2023-08-31 21:55:12,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 21:55:12,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 21:55:12,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:55:12,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 21:55:12,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-31 21:55:12,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 434 out of 949 [2023-08-31 21:55:12,706 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 441 transitions, 6356 flow. Second operand has 6 states, 6 states have (on average 437.8333333333333) internal successors, (2627), 6 states have internal predecessors, (2627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:55:12,706 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:55:12,706 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 434 of 949 [2023-08-31 21:55:12,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 21:55:23,085 INFO L130 PetriNetUnfolder]: 44248/76909 cut-off events. [2023-08-31 21:55:23,085 INFO L131 PetriNetUnfolder]: For 481374/494974 co-relation queries the response was YES. [2023-08-31 21:55:23,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294810 conditions, 76909 events. 44248/76909 cut-off events. For 481374/494974 co-relation queries the response was YES. Maximal size of possible extension queue 2241. Compared 722784 event pairs, 15367 based on Foata normal form. 417/68949 useless extension candidates. Maximal degree in co-relation 294766. Up to 53795 conditions per place. [2023-08-31 21:55:24,216 INFO L137 encePairwiseOnDemand]: 944/949 looper letters, 354 selfloop transitions, 0 changer transitions 31/456 dead transitions. [2023-08-31 21:55:24,216 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 456 transitions, 7148 flow [2023-08-31 21:55:24,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 21:55:24,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 21:55:24,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2659 transitions. [2023-08-31 21:55:24,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46698278890059713 [2023-08-31 21:55:24,218 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2659 transitions. [2023-08-31 21:55:24,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2659 transitions. [2023-08-31 21:55:24,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 21:55:24,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2659 transitions. [2023-08-31 21:55:24,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 443.1666666666667) internal successors, (2659), 6 states have internal predecessors, (2659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:55:24,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 949.0) internal successors, (6643), 7 states have internal predecessors, (6643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:55:24,223 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 949.0) internal successors, (6643), 7 states have internal predecessors, (6643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:55:24,224 INFO L175 Difference]: Start difference. First operand has 185 places, 441 transitions, 6356 flow. Second operand 6 states and 2659 transitions. [2023-08-31 21:55:24,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 456 transitions, 7148 flow [2023-08-31 21:55:25,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 456 transitions, 7017 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-31 21:55:25,683 INFO L231 Difference]: Finished difference. Result has 185 places, 425 transitions, 6112 flow [2023-08-31 21:55:25,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=949, PETRI_DIFFERENCE_MINUEND_FLOW=6223, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6112, PETRI_PLACES=185, PETRI_TRANSITIONS=425} [2023-08-31 21:55:25,684 INFO L281 CegarLoopForPetriNet]: 141 programPoint places, 44 predicate places. [2023-08-31 21:55:25,684 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 425 transitions, 6112 flow [2023-08-31 21:55:25,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 437.8333333333333) internal successors, (2627), 6 states have internal predecessors, (2627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:55:25,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:55:25,684 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 21:55:25,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-31 21:55:25,685 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err9ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2023-08-31 21:55:25,685 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:55:25,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1422832916, now seen corresponding path program 3 times [2023-08-31 21:55:25,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:55:25,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435795724] [2023-08-31 21:55:25,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:55:25,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:55:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:55:25,823 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 21:55:25,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:55:25,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435795724] [2023-08-31 21:55:25,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435795724] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 21:55:25,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297240160] [2023-08-31 21:55:25,823 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 21:55:25,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 21:55:25,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 21:55:25,824 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 21:55:25,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-31 21:55:26,091 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-31 21:55:26,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 21:55:26,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 89 conjunts are in the unsatisfiable core [2023-08-31 21:55:26,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 21:55:26,137 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-31 21:55:26,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-31 21:55:26,171 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-31 21:55:26,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-31 21:55:26,205 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-08-31 21:55:26,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-08-31 21:55:26,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-31 21:55:26,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-08-31 21:55:26,371 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 21:55:26,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-08-31 21:55:26,408 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 21:55:26,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2023-08-31 21:55:26,477 INFO L321 Elim1Store]: treesize reduction 83, result has 36.6 percent of original size [2023-08-31 21:55:26,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 162 treesize of output 160 [2023-08-31 21:55:26,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 148 treesize of output 133 [2023-08-31 21:55:26,534 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-31 21:55:26,534 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 21:55:26,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297240160] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 21:55:26,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 21:55:26,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 16 [2023-08-31 21:55:26,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685498467] [2023-08-31 21:55:26,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 21:55:26,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 21:55:26,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:55:26,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 21:55:26,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272