./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/09-regions_16-arrayloop_rc.i --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/goblint-regression/09-regions_16-arrayloop_rc.i -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 5810bf8f90e8e4e20451fbc06dd5039f754e5765485d12699b814c2e1d4badb7 --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 20:16:58,545 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 20:16:58,548 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 20:16:58,591 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 20:16:58,591 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 20:16:58,594 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 20:16:58,596 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 20:16:58,598 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 20:16:58,600 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 20:16:58,604 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 20:16:58,605 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 20:16:58,607 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 20:16:58,608 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 20:16:58,609 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 20:16:58,611 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 20:16:58,617 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 20:16:58,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 20:16:58,619 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 20:16:58,621 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 20:16:58,627 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 20:16:58,628 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 20:16:58,629 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 20:16:58,630 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 20:16:58,630 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 20:16:58,637 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 20:16:58,637 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 20:16:58,637 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 20:16:58,639 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 20:16:58,639 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 20:16:58,640 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 20:16:58,640 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 20:16:58,642 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 20:16:58,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 20:16:58,644 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 20:16:58,645 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 20:16:58,645 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 20:16:58,645 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 20:16:58,645 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 20:16:58,646 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 20:16:58,646 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 20:16:58,647 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 20:16:58,648 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-31 20:16:58,680 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 20:16:58,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 20:16:58,681 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 20:16:58,681 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 20:16:58,682 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 20:16:58,682 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 20:16:58,683 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 20:16:58,683 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 20:16:58,683 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 20:16:58,683 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 20:16:58,684 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 20:16:58,684 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 20:16:58,684 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 20:16:58,685 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 20:16:58,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 20:16:58,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 20:16:58,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 20:16:58,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 20:16:58,685 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-31 20:16:58,686 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 20:16:58,686 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 20:16:58,686 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 20:16:58,686 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 20:16:58,686 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 20:16:58,686 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 20:16:58,687 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 20:16:58,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:16:58,687 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 20:16:58,687 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 20:16:58,687 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 20:16:58,688 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 20:16:58,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 20:16:58,688 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 20:16:58,688 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 20:16:58,688 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 20:16:58,689 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 20:16:58,689 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 20:16:58,689 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5810bf8f90e8e4e20451fbc06dd5039f754e5765485d12699b814c2e1d4badb7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 20:16:58,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 20:16:58,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 20:16:58,996 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 20:16:58,997 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 20:16:58,997 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 20:16:58,999 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/09-regions_16-arrayloop_rc.i [2023-08-31 20:17:00,184 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 20:17:00,451 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 20:17:00,452 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/09-regions_16-arrayloop_rc.i [2023-08-31 20:17:00,467 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78fa36619/c257a2a6fadd427d9a80641354b4ec54/FLAG3507fedb1 [2023-08-31 20:17:00,482 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78fa36619/c257a2a6fadd427d9a80641354b4ec54 [2023-08-31 20:17:00,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 20:17:00,486 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 20:17:00,487 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 20:17:00,487 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 20:17:00,489 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 20:17:00,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:17:00" (1/1) ... [2023-08-31 20:17:00,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d2a4c02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:17:00, skipping insertion in model container [2023-08-31 20:17:00,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:17:00" (1/1) ... [2023-08-31 20:17:00,496 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 20:17:00,540 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 20:17:01,042 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:17:01,062 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 20:17:01,134 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:17:01,223 INFO L208 MainTranslator]: Completed translation [2023-08-31 20:17:01,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:17:01 WrapperNode [2023-08-31 20:17:01,223 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 20:17:01,224 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 20:17:01,225 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 20:17:01,225 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 20:17:01,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:17:01" (1/1) ... [2023-08-31 20:17:01,281 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:17:01" (1/1) ... [2023-08-31 20:17:01,326 INFO L138 Inliner]: procedures = 368, calls = 28, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 232 [2023-08-31 20:17:01,327 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 20:17:01,328 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 20:17:01,328 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 20:17:01,328 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 20:17:01,335 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:17:01" (1/1) ... [2023-08-31 20:17:01,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:17:01" (1/1) ... [2023-08-31 20:17:01,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:17:01" (1/1) ... [2023-08-31 20:17:01,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:17:01" (1/1) ... [2023-08-31 20:17:01,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:17:01" (1/1) ... [2023-08-31 20:17:01,389 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:17:01" (1/1) ... [2023-08-31 20:17:01,394 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:17:01" (1/1) ... [2023-08-31 20:17:01,403 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:17:01" (1/1) ... [2023-08-31 20:17:01,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 20:17:01,409 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 20:17:01,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 20:17:01,410 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 20:17:01,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:17:01" (1/1) ... [2023-08-31 20:17:01,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:17:01,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:17:01,437 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 20:17:01,445 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 20:17:01,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 20:17:01,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-31 20:17:01,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 20:17:01,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 20:17:01,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 20:17:01,474 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-31 20:17:01,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-31 20:17:01,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 20:17:01,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-31 20:17:01,475 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-31 20:17:01,475 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-31 20:17:01,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 20:17:01,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 20:17:01,476 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 20:17:01,616 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 20:17:01,617 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 20:17:01,997 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 20:17:02,004 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 20:17:02,005 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-31 20:17:02,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:17:02 BoogieIcfgContainer [2023-08-31 20:17:02,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 20:17:02,008 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 20:17:02,008 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 20:17:02,010 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 20:17:02,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 08:17:00" (1/3) ... [2023-08-31 20:17:02,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d75f8c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:17:02, skipping insertion in model container [2023-08-31 20:17:02,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:17:01" (2/3) ... [2023-08-31 20:17:02,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d75f8c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:17:02, skipping insertion in model container [2023-08-31 20:17:02,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:17:02" (3/3) ... [2023-08-31 20:17:02,013 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_16-arrayloop_rc.i [2023-08-31 20:17:02,019 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 20:17:02,026 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 20:17:02,027 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-08-31 20:17:02,027 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 20:17:02,110 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 20:17:02,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 253 places, 255 transitions, 515 flow [2023-08-31 20:17:02,243 INFO L130 PetriNetUnfolder]: 6/254 cut-off events. [2023-08-31 20:17:02,244 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:17:02,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 254 events. 6/254 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 405 event pairs, 0 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 191. Up to 2 conditions per place. [2023-08-31 20:17:02,253 INFO L82 GeneralOperation]: Start removeDead. Operand has 253 places, 255 transitions, 515 flow [2023-08-31 20:17:02,265 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 252 places, 254 transitions, 511 flow [2023-08-31 20:17:02,269 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:17:02,277 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 252 places, 254 transitions, 511 flow [2023-08-31 20:17:02,282 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 252 places, 254 transitions, 511 flow [2023-08-31 20:17:02,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 252 places, 254 transitions, 511 flow [2023-08-31 20:17:02,356 INFO L130 PetriNetUnfolder]: 6/254 cut-off events. [2023-08-31 20:17:02,357 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:17:02,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 254 events. 6/254 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 405 event pairs, 0 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 191. Up to 2 conditions per place. [2023-08-31 20:17:02,370 INFO L119 LiptonReduction]: Number of co-enabled transitions 17820 [2023-08-31 20:17:18,251 INFO L134 LiptonReduction]: Checked pairs total: 108171 [2023-08-31 20:17:18,251 INFO L136 LiptonReduction]: Total number of compositions: 147 [2023-08-31 20:17:18,265 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 20:17:18,270 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;@c08a9cc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:17:18,271 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-08-31 20:17:18,273 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2023-08-31 20:17:18,273 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:17:18,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:17:18,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-31 20:17:18,274 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-31 20:17:18,279 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:17:18,279 INFO L85 PathProgramCache]: Analyzing trace with hash 25566, now seen corresponding path program 1 times [2023-08-31 20:17:18,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:17:18,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661095592] [2023-08-31 20:17:18,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:17:18,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:17:18,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:17:18,413 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 20:17:18,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:17:18,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661095592] [2023-08-31 20:17:18,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661095592] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:17:18,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:17:18,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 20:17:18,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724420891] [2023-08-31 20:17:18,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:17:18,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-31 20:17:18,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:17:18,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-31 20:17:18,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-31 20:17:18,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 402 [2023-08-31 20:17:18,455 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 122 transitions, 247 flow. Second operand has 2 states, 2 states have (on average 252.0) internal successors, (504), 2 states have internal predecessors, (504), 0 states have call successors, (0), 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 20:17:18,455 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:17:18,455 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 402 [2023-08-31 20:17:18,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:17:18,776 INFO L130 PetriNetUnfolder]: 376/1700 cut-off events. [2023-08-31 20:17:18,776 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:17:18,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2457 conditions, 1700 events. 376/1700 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 10916 event pairs, 336 based on Foata normal form. 0/1615 useless extension candidates. Maximal degree in co-relation 2444. Up to 753 conditions per place. [2023-08-31 20:17:18,786 INFO L137 encePairwiseOnDemand]: 399/402 looper letters, 43 selfloop transitions, 0 changer transitions 0/119 dead transitions. [2023-08-31 20:17:18,786 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 119 transitions, 327 flow [2023-08-31 20:17:18,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-31 20:17:18,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-31 20:17:18,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 548 transitions. [2023-08-31 20:17:18,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.681592039800995 [2023-08-31 20:17:18,800 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 548 transitions. [2023-08-31 20:17:18,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 548 transitions. [2023-08-31 20:17:18,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:17:18,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 548 transitions. [2023-08-31 20:17:18,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 274.0) internal successors, (548), 2 states have internal predecessors, (548), 0 states have call successors, (0), 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 20:17:18,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 402.0) internal successors, (1206), 3 states have internal predecessors, (1206), 0 states have call successors, (0), 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 20:17:18,813 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 402.0) internal successors, (1206), 3 states have internal predecessors, (1206), 0 states have call successors, (0), 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 20:17:18,814 INFO L175 Difference]: Start difference. First operand has 123 places, 122 transitions, 247 flow. Second operand 2 states and 548 transitions. [2023-08-31 20:17:18,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 119 transitions, 327 flow [2023-08-31 20:17:18,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 119 transitions, 326 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 20:17:18,820 INFO L231 Difference]: Finished difference. Result has 120 places, 119 transitions, 240 flow [2023-08-31 20:17:18,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=240, PETRI_PLACES=120, PETRI_TRANSITIONS=119} [2023-08-31 20:17:18,824 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, -3 predicate places. [2023-08-31 20:17:18,825 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 119 transitions, 240 flow [2023-08-31 20:17:18,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 252.0) internal successors, (504), 2 states have internal predecessors, (504), 0 states have call successors, (0), 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 20:17:18,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:17:18,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:17:18,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 20:17:18,826 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-31 20:17:18,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:17:18,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1621363482, now seen corresponding path program 1 times [2023-08-31 20:17:18,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:17:18,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201406521] [2023-08-31 20:17:18,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:17:18,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:17:18,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:17:18,993 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 20:17:18,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:17:18,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201406521] [2023-08-31 20:17:18,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201406521] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:17:18,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:17:18,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 20:17:18,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068925031] [2023-08-31 20:17:18,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:17:18,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 20:17:18,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:17:18,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 20:17:18,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 20:17:19,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 402 [2023-08-31 20:17:19,069 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 119 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 245.33333333333334) internal successors, (736), 3 states have internal predecessors, (736), 0 states have call successors, (0), 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 20:17:19,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:17:19,070 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 402 [2023-08-31 20:17:19,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:17:19,637 INFO L130 PetriNetUnfolder]: 716/3057 cut-off events. [2023-08-31 20:17:19,637 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:17:19,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4495 conditions, 3057 events. 716/3057 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 20536 event pairs, 336 based on Foata normal form. 0/2921 useless extension candidates. Maximal degree in co-relation 4492. Up to 753 conditions per place. [2023-08-31 20:17:19,650 INFO L137 encePairwiseOnDemand]: 396/402 looper letters, 77 selfloop transitions, 4 changer transitions 0/157 dead transitions. [2023-08-31 20:17:19,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 157 transitions, 478 flow [2023-08-31 20:17:19,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 20:17:19,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 20:17:19,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 812 transitions. [2023-08-31 20:17:19,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6733001658374793 [2023-08-31 20:17:19,653 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 812 transitions. [2023-08-31 20:17:19,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 812 transitions. [2023-08-31 20:17:19,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:17:19,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 812 transitions. [2023-08-31 20:17:19,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 270.6666666666667) internal successors, (812), 3 states have internal predecessors, (812), 0 states have call successors, (0), 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 20:17:19,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 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 20:17:19,659 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 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 20:17:19,660 INFO L175 Difference]: Start difference. First operand has 120 places, 119 transitions, 240 flow. Second operand 3 states and 812 transitions. [2023-08-31 20:17:19,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 157 transitions, 478 flow [2023-08-31 20:17:19,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 157 transitions, 478 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 20:17:19,663 INFO L231 Difference]: Finished difference. Result has 123 places, 121 transitions, 264 flow [2023-08-31 20:17:19,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=264, PETRI_PLACES=123, PETRI_TRANSITIONS=121} [2023-08-31 20:17:19,664 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, 0 predicate places. [2023-08-31 20:17:19,664 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 121 transitions, 264 flow [2023-08-31 20:17:19,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 245.33333333333334) internal successors, (736), 3 states have internal predecessors, (736), 0 states have call successors, (0), 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 20:17:19,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:17:19,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:17:19,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 20:17:19,666 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-31 20:17:19,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:17:19,666 INFO L85 PathProgramCache]: Analyzing trace with hash -621239689, now seen corresponding path program 1 times [2023-08-31 20:17:19,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:17:19,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782653709] [2023-08-31 20:17:19,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:17:19,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:17:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:17:19,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:17:19,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:17:19,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782653709] [2023-08-31 20:17:19,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782653709] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 20:17:19,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17104001] [2023-08-31 20:17:19,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:17:19,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:17:19,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:17:19,794 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 20:17:19,820 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 20:17:19,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:17:19,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-31 20:17:19,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 20:17:19,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:17:19,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 20:17:20,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:17:20,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17104001] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 20:17:20,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 20:17:20,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-31 20:17:20,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958270970] [2023-08-31 20:17:20,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 20:17:20,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 20:17:20,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:17:20,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 20:17:20,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-31 20:17:20,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 402 [2023-08-31 20:17:20,180 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 121 transitions, 264 flow. Second operand has 7 states, 7 states have (on average 242.85714285714286) internal successors, (1700), 7 states have internal predecessors, (1700), 0 states have call successors, (0), 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 20:17:20,180 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:17:20,180 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 402 [2023-08-31 20:17:20,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:17:21,501 INFO L130 PetriNetUnfolder]: 1413/6102 cut-off events. [2023-08-31 20:17:21,501 INFO L131 PetriNetUnfolder]: For 63/63 co-relation queries the response was YES. [2023-08-31 20:17:21,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9066 conditions, 6102 events. 1413/6102 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 41949 event pairs, 229 based on Foata normal form. 51/5965 useless extension candidates. Maximal degree in co-relation 9061. Up to 698 conditions per place. [2023-08-31 20:17:21,527 INFO L137 encePairwiseOnDemand]: 395/402 looper letters, 165 selfloop transitions, 11 changer transitions 0/252 dead transitions. [2023-08-31 20:17:21,527 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 252 transitions, 888 flow [2023-08-31 20:17:21,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 20:17:21,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 20:17:21,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1628 transitions. [2023-08-31 20:17:21,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6749585406301825 [2023-08-31 20:17:21,531 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1628 transitions. [2023-08-31 20:17:21,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1628 transitions. [2023-08-31 20:17:21,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:17:21,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1628 transitions. [2023-08-31 20:17:21,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 271.3333333333333) internal successors, (1628), 6 states have internal predecessors, (1628), 0 states have call successors, (0), 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 20:17:21,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 402.0) internal successors, (2814), 7 states have internal predecessors, (2814), 0 states have call successors, (0), 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 20:17:21,541 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 402.0) internal successors, (2814), 7 states have internal predecessors, (2814), 0 states have call successors, (0), 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 20:17:21,541 INFO L175 Difference]: Start difference. First operand has 123 places, 121 transitions, 264 flow. Second operand 6 states and 1628 transitions. [2023-08-31 20:17:21,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 252 transitions, 888 flow [2023-08-31 20:17:21,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 252 transitions, 884 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 20:17:21,546 INFO L231 Difference]: Finished difference. Result has 131 places, 127 transitions, 338 flow [2023-08-31 20:17:21,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=338, PETRI_PLACES=131, PETRI_TRANSITIONS=127} [2023-08-31 20:17:21,547 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, 8 predicate places. [2023-08-31 20:17:21,547 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 127 transitions, 338 flow [2023-08-31 20:17:21,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 242.85714285714286) internal successors, (1700), 7 states have internal predecessors, (1700), 0 states have call successors, (0), 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 20:17:21,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:17:21,549 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:17:21,558 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 20:17:21,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:17:21,755 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-31 20:17:21,755 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:17:21,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1665303974, now seen corresponding path program 2 times [2023-08-31 20:17:21,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:17:21,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132747354] [2023-08-31 20:17:21,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:17:21,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:17:21,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:17:22,097 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:17:22,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:17:22,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132747354] [2023-08-31 20:17:22,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132747354] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 20:17:22,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951517180] [2023-08-31 20:17:22,101 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 20:17:22,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:17:22,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:17:22,103 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 20:17:22,130 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 20:17:22,270 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-31 20:17:22,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 20:17:22,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-31 20:17:22,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 20:17:22,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-31 20:17:22,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-31 20:17:22,388 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:17:22,389 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 1 case distinctions, treesize of input 26 treesize of output 28 [2023-08-31 20:17:22,429 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:17:22,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2023-08-31 20:17:22,450 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-31 20:17:22,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 20:17:22,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951517180] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:17:22,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 20:17:22,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 12 [2023-08-31 20:17:22,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48066683] [2023-08-31 20:17:22,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:17:22,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 20:17:22,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:17:22,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 20:17:22,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-08-31 20:17:22,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 402 [2023-08-31 20:17:22,740 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 127 transitions, 338 flow. Second operand has 7 states, 7 states have (on average 178.85714285714286) internal successors, (1252), 7 states have internal predecessors, (1252), 0 states have call successors, (0), 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 20:17:22,740 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:17:22,740 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 402 [2023-08-31 20:17:22,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:17:25,869 INFO L130 PetriNetUnfolder]: 9007/20807 cut-off events. [2023-08-31 20:17:25,869 INFO L131 PetriNetUnfolder]: For 1582/1582 co-relation queries the response was YES. [2023-08-31 20:17:25,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39843 conditions, 20807 events. 9007/20807 cut-off events. For 1582/1582 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 139575 event pairs, 708 based on Foata normal form. 0/19912 useless extension candidates. Maximal degree in co-relation 39835. Up to 15146 conditions per place. [2023-08-31 20:17:25,960 INFO L137 encePairwiseOnDemand]: 358/402 looper letters, 253 selfloop transitions, 151 changer transitions 0/428 dead transitions. [2023-08-31 20:17:25,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 428 transitions, 1958 flow [2023-08-31 20:17:25,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 20:17:25,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 20:17:25,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1616 transitions. [2023-08-31 20:17:25,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.574271499644634 [2023-08-31 20:17:25,965 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1616 transitions. [2023-08-31 20:17:25,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1616 transitions. [2023-08-31 20:17:25,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:17:25,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1616 transitions. [2023-08-31 20:17:25,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 230.85714285714286) internal successors, (1616), 7 states have internal predecessors, (1616), 0 states have call successors, (0), 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 20:17:25,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 402.0) internal successors, (3216), 8 states have internal predecessors, (3216), 0 states have call successors, (0), 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 20:17:25,975 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 402.0) internal successors, (3216), 8 states have internal predecessors, (3216), 0 states have call successors, (0), 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 20:17:25,975 INFO L175 Difference]: Start difference. First operand has 131 places, 127 transitions, 338 flow. Second operand 7 states and 1616 transitions. [2023-08-31 20:17:25,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 428 transitions, 1958 flow [2023-08-31 20:17:25,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 428 transitions, 1902 flow, removed 21 selfloop flow, removed 1 redundant places. [2023-08-31 20:17:25,985 INFO L231 Difference]: Finished difference. Result has 141 places, 312 transitions, 1450 flow [2023-08-31 20:17:25,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1450, PETRI_PLACES=141, PETRI_TRANSITIONS=312} [2023-08-31 20:17:25,987 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, 18 predicate places. [2023-08-31 20:17:25,987 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 312 transitions, 1450 flow [2023-08-31 20:17:25,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 178.85714285714286) internal successors, (1252), 7 states have internal predecessors, (1252), 0 states have call successors, (0), 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 20:17:25,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:17:25,988 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:17:25,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-31 20:17:26,193 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,SelfDestructingSolverStorable3 [2023-08-31 20:17:26,194 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-31 20:17:26,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:17:26,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1104611333, now seen corresponding path program 1 times [2023-08-31 20:17:26,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:17:26,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754789142] [2023-08-31 20:17:26,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:17:26,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:17:26,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:17:26,417 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:17:26,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:17:26,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754789142] [2023-08-31 20:17:26,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754789142] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 20:17:26,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144088151] [2023-08-31 20:17:26,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:17:26,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:17:26,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:17:26,419 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 20:17:26,444 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 20:17:26,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:17:26,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-31 20:17:26,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 20:17:26,640 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:17:26,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 20:17:26,682 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:17:26,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144088151] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 20:17:26,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 20:17:26,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-31 20:17:26,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898321363] [2023-08-31 20:17:26,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 20:17:26,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-31 20:17:26,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:17:26,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-31 20:17:26,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-31 20:17:26,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 402 [2023-08-31 20:17:26,972 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 312 transitions, 1450 flow. Second operand has 13 states, 13 states have (on average 242.53846153846155) internal successors, (3153), 13 states have internal predecessors, (3153), 0 states have call successors, (0), 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 20:17:26,973 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:17:26,973 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 402 [2023-08-31 20:17:26,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:17:32,646 INFO L130 PetriNetUnfolder]: 6709/23511 cut-off events. [2023-08-31 20:17:32,647 INFO L131 PetriNetUnfolder]: For 5849/6098 co-relation queries the response was YES. [2023-08-31 20:17:32,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51819 conditions, 23511 events. 6709/23511 cut-off events. For 5849/6098 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 171484 event pairs, 21 based on Foata normal form. 163/23280 useless extension candidates. Maximal degree in co-relation 51805. Up to 9342 conditions per place. [2023-08-31 20:17:32,740 INFO L137 encePairwiseOnDemand]: 395/402 looper letters, 553 selfloop transitions, 23 changer transitions 0/820 dead transitions. [2023-08-31 20:17:32,740 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 820 transitions, 4376 flow [2023-08-31 20:17:32,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-31 20:17:32,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-31 20:17:32,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3308 transitions. [2023-08-31 20:17:32,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.685737976782753 [2023-08-31 20:17:32,747 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3308 transitions. [2023-08-31 20:17:32,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3308 transitions. [2023-08-31 20:17:32,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:17:32,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3308 transitions. [2023-08-31 20:17:32,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 275.6666666666667) internal successors, (3308), 12 states have internal predecessors, (3308), 0 states have call successors, (0), 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 20:17:32,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 402.0) internal successors, (5226), 13 states have internal predecessors, (5226), 0 states have call successors, (0), 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 20:17:32,762 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 402.0) internal successors, (5226), 13 states have internal predecessors, (5226), 0 states have call successors, (0), 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 20:17:32,763 INFO L175 Difference]: Start difference. First operand has 141 places, 312 transitions, 1450 flow. Second operand 12 states and 3308 transitions. [2023-08-31 20:17:32,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 820 transitions, 4376 flow [2023-08-31 20:17:32,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 820 transitions, 4376 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 20:17:32,855 INFO L231 Difference]: Finished difference. Result has 159 places, 325 transitions, 1632 flow [2023-08-31 20:17:32,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=1450, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1632, PETRI_PLACES=159, PETRI_TRANSITIONS=325} [2023-08-31 20:17:32,857 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, 36 predicate places. [2023-08-31 20:17:32,858 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 325 transitions, 1632 flow [2023-08-31 20:17:32,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 242.53846153846155) internal successors, (3153), 13 states have internal predecessors, (3153), 0 states have call successors, (0), 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 20:17:32,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:17:32,859 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:17:32,870 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 20:17:33,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:17:33,065 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-31 20:17:33,066 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:17:33,066 INFO L85 PathProgramCache]: Analyzing trace with hash 2058752731, now seen corresponding path program 2 times [2023-08-31 20:17:33,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:17:33,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752660134] [2023-08-31 20:17:33,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:17:33,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:17:33,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:17:33,949 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:17:33,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:17:33,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752660134] [2023-08-31 20:17:33,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752660134] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:17:33,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:17:33,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 20:17:33,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407434072] [2023-08-31 20:17:33,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:17:33,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 20:17:33,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:17:33,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 20:17:33,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-31 20:17:34,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 402 [2023-08-31 20:17:34,260 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 325 transitions, 1632 flow. Second operand has 6 states, 6 states have (on average 177.16666666666666) internal successors, (1063), 6 states have internal predecessors, (1063), 0 states have call successors, (0), 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 20:17:34,260 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:17:34,260 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 402 [2023-08-31 20:17:34,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:17:45,063 INFO L130 PetriNetUnfolder]: 24557/55220 cut-off events. [2023-08-31 20:17:45,063 INFO L131 PetriNetUnfolder]: For 19804/20050 co-relation queries the response was YES. [2023-08-31 20:17:45,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136541 conditions, 55220 events. 24557/55220 cut-off events. For 19804/20050 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 370961 event pairs, 7520 based on Foata normal form. 0/54245 useless extension candidates. Maximal degree in co-relation 136520. Up to 47529 conditions per place. [2023-08-31 20:17:45,352 INFO L137 encePairwiseOnDemand]: 372/402 looper letters, 339 selfloop transitions, 109 changer transitions 0/492 dead transitions. [2023-08-31 20:17:45,352 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 492 transitions, 2954 flow [2023-08-31 20:17:45,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 20:17:45,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 20:17:45,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1306 transitions. [2023-08-31 20:17:45,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5414593698175788 [2023-08-31 20:17:45,356 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1306 transitions. [2023-08-31 20:17:45,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1306 transitions. [2023-08-31 20:17:45,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:17:45,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1306 transitions. [2023-08-31 20:17:45,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 217.66666666666666) internal successors, (1306), 6 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 20:17:45,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 402.0) internal successors, (2814), 7 states have internal predecessors, (2814), 0 states have call successors, (0), 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 20:17:45,371 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 402.0) internal successors, (2814), 7 states have internal predecessors, (2814), 0 states have call successors, (0), 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 20:17:45,372 INFO L175 Difference]: Start difference. First operand has 159 places, 325 transitions, 1632 flow. Second operand 6 states and 1306 transitions. [2023-08-31 20:17:45,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 492 transitions, 2954 flow [2023-08-31 20:17:45,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 492 transitions, 2928 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-08-31 20:17:45,516 INFO L231 Difference]: Finished difference. Result has 165 places, 428 transitions, 2261 flow [2023-08-31 20:17:45,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=1606, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2261, PETRI_PLACES=165, PETRI_TRANSITIONS=428} [2023-08-31 20:17:45,517 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, 42 predicate places. [2023-08-31 20:17:45,517 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 428 transitions, 2261 flow [2023-08-31 20:17:45,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 177.16666666666666) internal successors, (1063), 6 states have internal predecessors, (1063), 0 states have call successors, (0), 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 20:17:45,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:17:45,518 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:17:45,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 20:17:45,518 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-31 20:17:45,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:17:45,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1375590774, now seen corresponding path program 1 times [2023-08-31 20:17:45,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:17:45,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504450832] [2023-08-31 20:17:45,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:17:45,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:17:45,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:17:46,793 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:17:46,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:17:46,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504450832] [2023-08-31 20:17:46,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504450832] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:17:46,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:17:46,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 20:17:46,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489459269] [2023-08-31 20:17:46,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:17:46,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 20:17:46,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:17:46,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 20:17:46,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-31 20:17:47,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 402 [2023-08-31 20:17:47,554 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 428 transitions, 2261 flow. Second operand has 9 states, 9 states have (on average 174.0) internal successors, (1566), 9 states have internal predecessors, (1566), 0 states have call successors, (0), 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 20:17:47,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:17:47,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 402 [2023-08-31 20:17:47,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:18:08,442 INFO L130 PetriNetUnfolder]: 46463/104592 cut-off events. [2023-08-31 20:18:08,442 INFO L131 PetriNetUnfolder]: For 55044/55564 co-relation queries the response was YES. [2023-08-31 20:18:08,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296858 conditions, 104592 events. 46463/104592 cut-off events. For 55044/55564 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 812439 event pairs, 2415 based on Foata normal form. 190/102591 useless extension candidates. Maximal degree in co-relation 296832. Up to 42920 conditions per place. [2023-08-31 20:18:09,028 INFO L137 encePairwiseOnDemand]: 364/402 looper letters, 855 selfloop transitions, 157 changer transitions 1/1053 dead transitions. [2023-08-31 20:18:09,028 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 1053 transitions, 7657 flow [2023-08-31 20:18:09,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-31 20:18:09,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-31 20:18:09,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2767 transitions. [2023-08-31 20:18:09,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5294680443934175 [2023-08-31 20:18:09,036 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2767 transitions. [2023-08-31 20:18:09,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2767 transitions. [2023-08-31 20:18:09,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:18:09,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2767 transitions. [2023-08-31 20:18:09,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 212.84615384615384) internal successors, (2767), 13 states have internal predecessors, (2767), 0 states have call successors, (0), 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 20:18:09,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 402.0) internal successors, (5628), 14 states have internal predecessors, (5628), 0 states have call successors, (0), 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 20:18:09,050 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 402.0) internal successors, (5628), 14 states have internal predecessors, (5628), 0 states have call successors, (0), 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 20:18:09,050 INFO L175 Difference]: Start difference. First operand has 165 places, 428 transitions, 2261 flow. Second operand 13 states and 2767 transitions. [2023-08-31 20:18:09,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 1053 transitions, 7657 flow [2023-08-31 20:18:10,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 1053 transitions, 7585 flow, removed 36 selfloop flow, removed 0 redundant places. [2023-08-31 20:18:10,162 INFO L231 Difference]: Finished difference. Result has 188 places, 585 transitions, 4179 flow [2023-08-31 20:18:10,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=2237, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4179, PETRI_PLACES=188, PETRI_TRANSITIONS=585} [2023-08-31 20:18:10,163 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, 65 predicate places. [2023-08-31 20:18:10,163 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 585 transitions, 4179 flow [2023-08-31 20:18:10,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 174.0) internal successors, (1566), 9 states have internal predecessors, (1566), 0 states have call successors, (0), 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 20:18:10,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:18:10,164 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:18:10,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 20:18:10,164 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-31 20:18:10,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:18:10,165 INFO L85 PathProgramCache]: Analyzing trace with hash 869726804, now seen corresponding path program 2 times [2023-08-31 20:18:10,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:18:10,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89614548] [2023-08-31 20:18:10,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:18:10,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:18:10,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:18:11,252 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:18:11,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:18:11,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89614548] [2023-08-31 20:18:11,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89614548] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:18:11,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:18:11,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 20:18:11,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741167717] [2023-08-31 20:18:11,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:18:11,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 20:18:11,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:18:11,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 20:18:11,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-31 20:18:11,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 402 [2023-08-31 20:18:11,982 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 585 transitions, 4179 flow. Second operand has 9 states, 9 states have (on average 174.0) internal successors, (1566), 9 states have internal predecessors, (1566), 0 states have call successors, (0), 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 20:18:11,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:18:11,983 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 402 [2023-08-31 20:18:11,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:18:37,746 INFO L130 PetriNetUnfolder]: 46323/104382 cut-off events. [2023-08-31 20:18:37,746 INFO L131 PetriNetUnfolder]: For 98754/99304 co-relation queries the response was YES. [2023-08-31 20:18:38,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321478 conditions, 104382 events. 46323/104382 cut-off events. For 98754/99304 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 809809 event pairs, 3784 based on Foata normal form. 110/102451 useless extension candidates. Maximal degree in co-relation 321440. Up to 49188 conditions per place. [2023-08-31 20:18:38,411 INFO L137 encePairwiseOnDemand]: 362/402 looper letters, 838 selfloop transitions, 168 changer transitions 2/1048 dead transitions. [2023-08-31 20:18:38,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 1048 transitions, 8698 flow [2023-08-31 20:18:38,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-31 20:18:38,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-31 20:18:38,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2895 transitions. [2023-08-31 20:18:38,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5143923240938166 [2023-08-31 20:18:38,422 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2895 transitions. [2023-08-31 20:18:38,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2895 transitions. [2023-08-31 20:18:38,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:18:38,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2895 transitions. [2023-08-31 20:18:38,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 206.78571428571428) internal successors, (2895), 14 states have internal predecessors, (2895), 0 states have call successors, (0), 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 20:18:38,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 402.0) internal successors, (6030), 15 states have internal predecessors, (6030), 0 states have call successors, (0), 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 20:18:38,436 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 402.0) internal successors, (6030), 15 states have internal predecessors, (6030), 0 states have call successors, (0), 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 20:18:38,436 INFO L175 Difference]: Start difference. First operand has 188 places, 585 transitions, 4179 flow. Second operand 14 states and 2895 transitions. [2023-08-31 20:18:38,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 1048 transitions, 8698 flow [2023-08-31 20:18:41,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 1048 transitions, 8698 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 20:18:41,516 INFO L231 Difference]: Finished difference. Result has 211 places, 628 transitions, 5307 flow [2023-08-31 20:18:41,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=4179, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5307, PETRI_PLACES=211, PETRI_TRANSITIONS=628} [2023-08-31 20:18:41,517 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, 88 predicate places. [2023-08-31 20:18:41,517 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 628 transitions, 5307 flow [2023-08-31 20:18:41,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 174.0) internal successors, (1566), 9 states have internal predecessors, (1566), 0 states have call successors, (0), 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 20:18:41,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:18:41,518 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:18:41,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 20:18:41,518 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-31 20:18:41,518 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:18:41,518 INFO L85 PathProgramCache]: Analyzing trace with hash -367352326, now seen corresponding path program 1 times [2023-08-31 20:18:41,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:18:41,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373997358] [2023-08-31 20:18:41,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:18:41,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:18:41,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:18:42,517 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:18:42,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:18:42,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373997358] [2023-08-31 20:18:42,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373997358] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:18:42,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:18:42,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 20:18:42,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986334700] [2023-08-31 20:18:42,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:18:42,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 20:18:42,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:18:42,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 20:18:42,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-08-31 20:18:43,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 402 [2023-08-31 20:18:43,101 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 628 transitions, 5307 flow. Second operand has 9 states, 9 states have (on average 174.0) internal successors, (1566), 9 states have internal predecessors, (1566), 0 states have call successors, (0), 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 20:18:43,101 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:18:43,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 402 [2023-08-31 20:18:43,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:19:10,706 INFO L130 PetriNetUnfolder]: 47457/107302 cut-off events. [2023-08-31 20:19:10,707 INFO L131 PetriNetUnfolder]: For 150652/152552 co-relation queries the response was YES. [2023-08-31 20:19:11,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347243 conditions, 107302 events. 47457/107302 cut-off events. For 150652/152552 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 828014 event pairs, 21775 based on Foata normal form. 22/105462 useless extension candidates. Maximal degree in co-relation 347194. Up to 90415 conditions per place. [2023-08-31 20:19:11,575 INFO L137 encePairwiseOnDemand]: 369/402 looper letters, 561 selfloop transitions, 154 changer transitions 1/760 dead transitions. [2023-08-31 20:19:11,575 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 760 transitions, 7379 flow [2023-08-31 20:19:11,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 20:19:11,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 20:19:11,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1687 transitions. [2023-08-31 20:19:11,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5245646766169154 [2023-08-31 20:19:11,581 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1687 transitions. [2023-08-31 20:19:11,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1687 transitions. [2023-08-31 20:19:11,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:19:11,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1687 transitions. [2023-08-31 20:19:11,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 210.875) internal successors, (1687), 8 states have internal predecessors, (1687), 0 states have call successors, (0), 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 20:19:11,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 402.0) internal successors, (3618), 9 states have internal predecessors, (3618), 0 states have call successors, (0), 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 20:19:11,590 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 402.0) internal successors, (3618), 9 states have internal predecessors, (3618), 0 states have call successors, (0), 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 20:19:11,590 INFO L175 Difference]: Start difference. First operand has 211 places, 628 transitions, 5307 flow. Second operand 8 states and 1687 transitions. [2023-08-31 20:19:11,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 760 transitions, 7379 flow [2023-08-31 20:19:15,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 760 transitions, 6891 flow, removed 175 selfloop flow, removed 1 redundant places. [2023-08-31 20:19:15,346 INFO L231 Difference]: Finished difference. Result has 219 places, 633 transitions, 5248 flow [2023-08-31 20:19:15,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=4853, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5248, PETRI_PLACES=219, PETRI_TRANSITIONS=633} [2023-08-31 20:19:15,347 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, 96 predicate places. [2023-08-31 20:19:15,347 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 633 transitions, 5248 flow [2023-08-31 20:19:15,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 174.0) internal successors, (1566), 9 states have internal predecessors, (1566), 0 states have call successors, (0), 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 20:19:15,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:19:15,348 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:19:15,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 20:19:15,348 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-31 20:19:15,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:19:15,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1605052882, now seen corresponding path program 2 times [2023-08-31 20:19:15,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:19:15,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387224290] [2023-08-31 20:19:15,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:19:15,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:19:15,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:19:16,245 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:19:16,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:19:16,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387224290] [2023-08-31 20:19:16,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387224290] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:19:16,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:19:16,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 20:19:16,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270748784] [2023-08-31 20:19:16,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:19:16,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 20:19:16,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:19:16,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 20:19:16,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-31 20:19:17,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 402 [2023-08-31 20:19:17,148 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 633 transitions, 5248 flow. Second operand has 9 states, 9 states have (on average 174.0) internal successors, (1566), 9 states have internal predecessors, (1566), 0 states have call successors, (0), 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 20:19:17,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:19:17,148 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 402 [2023-08-31 20:19:17,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:19:43,949 INFO L130 PetriNetUnfolder]: 48267/109286 cut-off events. [2023-08-31 20:19:43,949 INFO L131 PetriNetUnfolder]: For 130865/132815 co-relation queries the response was YES. [2023-08-31 20:19:44,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357276 conditions, 109286 events. 48267/109286 cut-off events. For 130865/132815 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 853046 event pairs, 2908 based on Foata normal form. 80/107473 useless extension candidates. Maximal degree in co-relation 357225. Up to 49677 conditions per place. [2023-08-31 20:19:44,861 INFO L137 encePairwiseOnDemand]: 375/402 looper letters, 863 selfloop transitions, 123 changer transitions 2/1032 dead transitions. [2023-08-31 20:19:44,862 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 1032 transitions, 9509 flow [2023-08-31 20:19:44,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 20:19:44,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 20:19:44,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2136 transitions. [2023-08-31 20:19:44,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5313432835820896 [2023-08-31 20:19:44,866 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2136 transitions. [2023-08-31 20:19:44,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2136 transitions. [2023-08-31 20:19:44,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:19:44,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2136 transitions. [2023-08-31 20:19:44,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 213.6) internal successors, (2136), 10 states have internal predecessors, (2136), 0 states have call successors, (0), 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 20:19:44,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 402.0) internal successors, (4422), 11 states have internal predecessors, (4422), 0 states have call successors, (0), 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 20:19:44,875 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 402.0) internal successors, (4422), 11 states have internal predecessors, (4422), 0 states have call successors, (0), 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 20:19:44,876 INFO L175 Difference]: Start difference. First operand has 219 places, 633 transitions, 5248 flow. Second operand 10 states and 2136 transitions. [2023-08-31 20:19:44,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 1032 transitions, 9509 flow [2023-08-31 20:19:48,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 1032 transitions, 9067 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-31 20:19:48,327 INFO L231 Difference]: Finished difference. Result has 229 places, 735 transitions, 6274 flow [2023-08-31 20:19:48,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=4979, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=519, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6274, PETRI_PLACES=229, PETRI_TRANSITIONS=735} [2023-08-31 20:19:48,328 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, 106 predicate places. [2023-08-31 20:19:48,329 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 735 transitions, 6274 flow [2023-08-31 20:19:48,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 174.0) internal successors, (1566), 9 states have internal predecessors, (1566), 0 states have call successors, (0), 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 20:19:48,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:19:48,329 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:19:48,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 20:19:48,329 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-31 20:19:48,330 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:19:48,330 INFO L85 PathProgramCache]: Analyzing trace with hash 11992814, now seen corresponding path program 3 times [2023-08-31 20:19:48,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:19:48,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067734269] [2023-08-31 20:19:48,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:19:48,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:19:48,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:19:49,251 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:19:49,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:19:49,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067734269] [2023-08-31 20:19:49,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067734269] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:19:49,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:19:49,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 20:19:49,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172154493] [2023-08-31 20:19:49,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:19:49,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 20:19:49,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:19:49,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 20:19:49,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-08-31 20:19:50,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 402 [2023-08-31 20:19:50,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 735 transitions, 6274 flow. Second operand has 9 states, 9 states have (on average 174.0) internal successors, (1566), 9 states have internal predecessors, (1566), 0 states have call successors, (0), 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 20:19:50,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:19:50,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 402 [2023-08-31 20:19:50,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:20:19,987 INFO L130 PetriNetUnfolder]: 48607/109682 cut-off events. [2023-08-31 20:20:19,987 INFO L131 PetriNetUnfolder]: For 180708/182658 co-relation queries the response was YES. [2023-08-31 20:20:20,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375299 conditions, 109682 events. 48607/109682 cut-off events. For 180708/182658 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 847451 event pairs, 21815 based on Foata normal form. 42/107862 useless extension candidates. Maximal degree in co-relation 375242. Up to 92035 conditions per place. [2023-08-31 20:20:21,066 INFO L137 encePairwiseOnDemand]: 369/402 looper letters, 598 selfloop transitions, 243 changer transitions 1/886 dead transitions. [2023-08-31 20:20:21,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 886 transitions, 8732 flow [2023-08-31 20:20:21,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 20:20:21,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 20:20:21,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1874 transitions. [2023-08-31 20:20:21,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5179657269209508 [2023-08-31 20:20:21,071 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1874 transitions. [2023-08-31 20:20:21,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1874 transitions. [2023-08-31 20:20:21,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:20:21,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1874 transitions. [2023-08-31 20:20:21,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 208.22222222222223) internal successors, (1874), 9 states have internal predecessors, (1874), 0 states have call successors, (0), 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 20:20:21,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 402.0) internal successors, (4020), 10 states have internal predecessors, (4020), 0 states have call successors, (0), 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 20:20:21,079 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 402.0) internal successors, (4020), 10 states have internal predecessors, (4020), 0 states have call successors, (0), 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 20:20:21,079 INFO L175 Difference]: Start difference. First operand has 229 places, 735 transitions, 6274 flow. Second operand 9 states and 1874 transitions. [2023-08-31 20:20:21,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 886 transitions, 8732 flow [2023-08-31 20:20:25,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 886 transitions, 8710 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-31 20:20:25,058 INFO L231 Difference]: Finished difference. Result has 239 places, 748 transitions, 7040 flow [2023-08-31 20:20:25,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=6252, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=735, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=230, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7040, PETRI_PLACES=239, PETRI_TRANSITIONS=748} [2023-08-31 20:20:25,059 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, 116 predicate places. [2023-08-31 20:20:25,059 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 748 transitions, 7040 flow [2023-08-31 20:20:25,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 174.0) internal successors, (1566), 9 states have internal predecessors, (1566), 0 states have call successors, (0), 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 20:20:25,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:20:25,060 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:20:25,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 20:20:25,060 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-31 20:20:25,060 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:20:25,060 INFO L85 PathProgramCache]: Analyzing trace with hash -800353708, now seen corresponding path program 3 times [2023-08-31 20:20:25,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:20:25,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440891188] [2023-08-31 20:20:25,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:20:25,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:20:25,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:20:25,991 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:20:25,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:20:25,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440891188] [2023-08-31 20:20:25,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440891188] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:20:25,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:20:25,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 20:20:25,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545980222] [2023-08-31 20:20:25,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:20:25,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 20:20:25,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:20:25,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 20:20:25,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-08-31 20:20:26,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 402 [2023-08-31 20:20:26,409 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 748 transitions, 7040 flow. Second operand has 9 states, 9 states have (on average 174.0) internal successors, (1566), 9 states have internal predecessors, (1566), 0 states have call successors, (0), 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 20:20:26,409 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:20:26,409 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 402 [2023-08-31 20:20:26,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand