./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_73-funloop_hard_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --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/28-race_reach_73-funloop_hard_racefree.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 c8af2e9e80aefb6a93651d6c869df13510f679bd9566c8571973545c9393aab5 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 18:26:44,556 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 18:26:44,559 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 18:26:44,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 18:26:44,595 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 18:26:44,603 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 18:26:44,605 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 18:26:44,609 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 18:26:44,611 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 18:26:44,616 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 18:26:44,617 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 18:26:44,619 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 18:26:44,620 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 18:26:44,621 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 18:26:44,622 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 18:26:44,626 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 18:26:44,627 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 18:26:44,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 18:26:44,629 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 18:26:44,633 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 18:26:44,636 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 18:26:44,637 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 18:26:44,638 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 18:26:44,639 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 18:26:44,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 18:26:44,647 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 18:26:44,648 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 18:26:44,649 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 18:26:44,650 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 18:26:44,651 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 18:26:44,656 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 18:26:44,657 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 18:26:44,658 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 18:26:44,659 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 18:26:44,660 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 18:26:44,660 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 18:26:44,661 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 18:26:44,661 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 18:26:44,662 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 18:26:44,662 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 18:26:44,663 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 18:26:44,664 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 18:26:44,689 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 18:26:44,690 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 18:26:44,690 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 18:26:44,690 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 18:26:44,691 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 18:26:44,691 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 18:26:44,691 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 18:26:44,691 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 18:26:44,692 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 18:26:44,692 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 18:26:44,692 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 18:26:44,692 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 18:26:44,692 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 18:26:44,692 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 18:26:44,692 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 18:26:44,692 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 18:26:44,693 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 18:26:44,693 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 18:26:44,693 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 18:26:44,693 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 18:26:44,693 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 18:26:44,693 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 18:26:44,693 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 18:26:44,694 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 18:26:44,694 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 18:26:44,694 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 18:26:44,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 18:26:44,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 18:26:44,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 18:26:44,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 18:26:44,695 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 18:26:44,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 18:26:44,695 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 18:26:44,695 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 18:26:44,695 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 18:26:44,695 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 18:26:44,695 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 18:26:44,695 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8af2e9e80aefb6a93651d6c869df13510f679bd9566c8571973545c9393aab5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-29 18:26:45,028 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 18:26:45,047 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 18:26:45,050 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 18:26:45,051 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 18:26:45,051 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 18:26:45,053 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2023-08-29 18:26:46,266 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 18:26:46,501 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 18:26:46,501 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2023-08-29 18:26:46,516 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f27bac88f/578b7f5ba4124f648b96cdc4733fde68/FLAG140d60dbf [2023-08-29 18:26:46,529 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f27bac88f/578b7f5ba4124f648b96cdc4733fde68 [2023-08-29 18:26:46,532 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 18:26:46,533 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 18:26:46,534 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 18:26:46,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 18:26:46,537 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 18:26:46,538 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:26:46" (1/1) ... [2023-08-29 18:26:46,539 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42646b0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:26:46, skipping insertion in model container [2023-08-29 18:26:46,539 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:26:46" (1/1) ... [2023-08-29 18:26:46,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 18:26:46,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 18:26:46,941 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_73-funloop_hard_racefree.i[41323,41336] [2023-08-29 18:26:46,974 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 18:26:46,993 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 18:26:47,039 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_73-funloop_hard_racefree.i[41323,41336] [2023-08-29 18:26:47,056 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 18:26:47,139 INFO L208 MainTranslator]: Completed translation [2023-08-29 18:26:47,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:26:47 WrapperNode [2023-08-29 18:26:47,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 18:26:47,142 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 18:26:47,142 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 18:26:47,142 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 18:26:47,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:26:47" (1/1) ... [2023-08-29 18:26:47,192 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:26:47" (1/1) ... [2023-08-29 18:26:47,244 INFO L138 Inliner]: procedures = 271, calls = 41, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 342 [2023-08-29 18:26:47,244 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 18:26:47,245 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 18:26:47,245 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 18:26:47,245 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 18:26:47,253 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:26:47" (1/1) ... [2023-08-29 18:26:47,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:26:47" (1/1) ... [2023-08-29 18:26:47,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:26:47" (1/1) ... [2023-08-29 18:26:47,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:26:47" (1/1) ... [2023-08-29 18:26:47,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:26:47" (1/1) ... [2023-08-29 18:26:47,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:26:47" (1/1) ... [2023-08-29 18:26:47,316 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:26:47" (1/1) ... [2023-08-29 18:26:47,323 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:26:47" (1/1) ... [2023-08-29 18:26:47,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 18:26:47,332 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 18:26:47,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 18:26:47,334 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 18:26:47,335 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:26:47" (1/1) ... [2023-08-29 18:26:47,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 18:26:47,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:26:47,370 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) [2023-08-29 18:26:47,400 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 [2023-08-29 18:26:47,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 18:26:47,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 18:26:47,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 18:26:47,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 18:26:47,419 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 18:26:47,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 18:26:47,420 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 18:26:47,420 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 18:26:47,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 18:26:47,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 18:26:47,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 18:26:47,424 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 18:26:47,635 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 18:26:47,637 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 18:26:48,055 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 18:26:48,063 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 18:26:48,063 INFO L302 CfgBuilder]: Removed 35 assume(true) statements. [2023-08-29 18:26:48,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:26:48 BoogieIcfgContainer [2023-08-29 18:26:48,065 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 18:26:48,067 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 18:26:48,067 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 18:26:48,069 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 18:26:48,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 06:26:46" (1/3) ... [2023-08-29 18:26:48,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1690754d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:26:48, skipping insertion in model container [2023-08-29 18:26:48,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:26:47" (2/3) ... [2023-08-29 18:26:48,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1690754d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:26:48, skipping insertion in model container [2023-08-29 18:26:48,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:26:48" (3/3) ... [2023-08-29 18:26:48,072 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_73-funloop_hard_racefree.i [2023-08-29 18:26:48,078 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 18:26:48,086 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 18:26:48,086 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-08-29 18:26:48,086 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 18:26:48,297 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-29 18:26:48,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 309 places, 351 transitions, 710 flow [2023-08-29 18:26:48,495 INFO L130 PetriNetUnfolder]: 73/558 cut-off events. [2023-08-29 18:26:48,503 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:26:48,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 564 conditions, 558 events. 73/558 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3018 event pairs, 0 based on Foata normal form. 0/455 useless extension candidates. Maximal degree in co-relation 314. Up to 8 conditions per place. [2023-08-29 18:26:48,516 INFO L82 GeneralOperation]: Start removeDead. Operand has 309 places, 351 transitions, 710 flow [2023-08-29 18:26:48,531 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 309 places, 351 transitions, 710 flow [2023-08-29 18:26:48,535 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:26:48,549 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 309 places, 351 transitions, 710 flow [2023-08-29 18:26:48,552 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 309 places, 351 transitions, 710 flow [2023-08-29 18:26:48,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 309 places, 351 transitions, 710 flow [2023-08-29 18:26:48,637 INFO L130 PetriNetUnfolder]: 73/558 cut-off events. [2023-08-29 18:26:48,638 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:26:48,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 564 conditions, 558 events. 73/558 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3018 event pairs, 0 based on Foata normal form. 0/455 useless extension candidates. Maximal degree in co-relation 314. Up to 8 conditions per place. [2023-08-29 18:26:48,663 INFO L119 LiptonReduction]: Number of co-enabled transitions 43452 [2023-08-29 18:26:51,779 INFO L134 LiptonReduction]: Checked pairs total: 155567 [2023-08-29 18:26:51,780 INFO L136 LiptonReduction]: Total number of compositions: 193 [2023-08-29 18:26:51,794 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:26:51,799 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;@7b0a5740, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:26:51,800 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-29 18:26:51,805 INFO L130 PetriNetUnfolder]: 11/48 cut-off events. [2023-08-29 18:26:51,806 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:26:51,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:26:51,807 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-29 18:26:51,807 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 18:26:51,812 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:26:51,812 INFO L85 PathProgramCache]: Analyzing trace with hash 2113474524, now seen corresponding path program 1 times [2023-08-29 18:26:51,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:26:51,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770079932] [2023-08-29 18:26:51,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:26:51,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:26:51,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:26:52,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:26:52,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:26:52,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770079932] [2023-08-29 18:26:52,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770079932] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:26:52,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:26:52,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:26:52,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30190001] [2023-08-29 18:26:52,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:26:52,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:26:52,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:26:52,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:26:52,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:26:52,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 544 [2023-08-29 18:26:52,236 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 192 transitions, 392 flow. Second operand has 3 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:52,237 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:26:52,237 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 544 [2023-08-29 18:26:52,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:26:52,670 INFO L130 PetriNetUnfolder]: 822/2911 cut-off events. [2023-08-29 18:26:52,671 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 18:26:52,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4445 conditions, 2911 events. 822/2911 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 23522 event pairs, 684 based on Foata normal form. 329/2953 useless extension candidates. Maximal degree in co-relation 4281. Up to 1527 conditions per place. [2023-08-29 18:26:52,685 INFO L137 encePairwiseOnDemand]: 510/544 looper letters, 63 selfloop transitions, 2 changer transitions 0/162 dead transitions. [2023-08-29 18:26:52,685 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 162 transitions, 462 flow [2023-08-29 18:26:52,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:26:52,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:26:52,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1009 transitions. [2023-08-29 18:26:52,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6182598039215687 [2023-08-29 18:26:52,701 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1009 transitions. [2023-08-29 18:26:52,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1009 transitions. [2023-08-29 18:26:52,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:26:52,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1009 transitions. [2023-08-29 18:26:52,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 336.3333333333333) internal successors, (1009), 3 states have internal predecessors, (1009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:52,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 544.0) internal successors, (2176), 4 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:52,718 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 544.0) internal successors, (2176), 4 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:52,719 INFO L175 Difference]: Start difference. First operand has 157 places, 192 transitions, 392 flow. Second operand 3 states and 1009 transitions. [2023-08-29 18:26:52,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 162 transitions, 462 flow [2023-08-29 18:26:52,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 162 transitions, 462 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:26:52,727 INFO L231 Difference]: Finished difference. Result has 160 places, 162 transitions, 342 flow [2023-08-29 18:26:52,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=544, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=342, PETRI_PLACES=160, PETRI_TRANSITIONS=162} [2023-08-29 18:26:52,731 INFO L281 CegarLoopForPetriNet]: 157 programPoint places, 3 predicate places. [2023-08-29 18:26:52,732 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 162 transitions, 342 flow [2023-08-29 18:26:52,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:52,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:26:52,733 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-29 18:26:52,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 18:26:52,733 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 18:26:52,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:26:52,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1336189078, now seen corresponding path program 1 times [2023-08-29 18:26:52,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:26:52,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929989157] [2023-08-29 18:26:52,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:26:52,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:26:52,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:26:52,792 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:26:52,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:26:52,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929989157] [2023-08-29 18:26:52,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929989157] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:26:52,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069873182] [2023-08-29 18:26:52,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:26:52,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:26:52,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:26:52,796 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) [2023-08-29 18:26:52,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-29 18:26:52,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:26:52,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 18:26:52,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:26:52,931 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:26:52,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:26:52,961 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:26:52,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069873182] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:26:52,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 18:26:52,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 18:26:52,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898621317] [2023-08-29 18:26:52,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 18:26:52,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 18:26:52,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:26:52,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 18:26:52,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 18:26:52,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 544 [2023-08-29 18:26:52,998 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 162 transitions, 342 flow. Second operand has 7 states, 7 states have (on average 304.57142857142856) internal successors, (2132), 7 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:53,012 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:26:53,013 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 544 [2023-08-29 18:26:53,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:26:53,452 INFO L130 PetriNetUnfolder]: 822/2914 cut-off events. [2023-08-29 18:26:53,453 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 18:26:53,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4461 conditions, 2914 events. 822/2914 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 23573 event pairs, 684 based on Foata normal form. 0/2627 useless extension candidates. Maximal degree in co-relation 4449. Up to 1527 conditions per place. [2023-08-29 18:26:53,468 INFO L137 encePairwiseOnDemand]: 541/544 looper letters, 63 selfloop transitions, 5 changer transitions 0/165 dead transitions. [2023-08-29 18:26:53,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 165 transitions, 490 flow [2023-08-29 18:26:53,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 18:26:53,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 18:26:53,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1889 transitions. [2023-08-29 18:26:53,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5787377450980392 [2023-08-29 18:26:53,473 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1889 transitions. [2023-08-29 18:26:53,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1889 transitions. [2023-08-29 18:26:53,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:26:53,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1889 transitions. [2023-08-29 18:26:53,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 314.8333333333333) internal successors, (1889), 6 states have internal predecessors, (1889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:53,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 544.0) internal successors, (3808), 7 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:53,487 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 544.0) internal successors, (3808), 7 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:53,487 INFO L175 Difference]: Start difference. First operand has 160 places, 162 transitions, 342 flow. Second operand 6 states and 1889 transitions. [2023-08-29 18:26:53,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 165 transitions, 490 flow [2023-08-29 18:26:53,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 165 transitions, 486 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-29 18:26:53,495 INFO L231 Difference]: Finished difference. Result has 167 places, 165 transitions, 374 flow [2023-08-29 18:26:53,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=544, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=374, PETRI_PLACES=167, PETRI_TRANSITIONS=165} [2023-08-29 18:26:53,497 INFO L281 CegarLoopForPetriNet]: 157 programPoint places, 10 predicate places. [2023-08-29 18:26:53,497 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 165 transitions, 374 flow [2023-08-29 18:26:53,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 304.57142857142856) internal successors, (2132), 7 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:53,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:26:53,499 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-08-29 18:26:53,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-29 18:26:53,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:26:53,705 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 18:26:53,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:26:53,705 INFO L85 PathProgramCache]: Analyzing trace with hash 735544156, now seen corresponding path program 2 times [2023-08-29 18:26:53,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:26:53,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789021484] [2023-08-29 18:26:53,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:26:53,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:26:53,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:26:53,805 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:26:53,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:26:53,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789021484] [2023-08-29 18:26:53,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789021484] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:26:53,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672465594] [2023-08-29 18:26:53,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 18:26:53,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:26:53,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:26:53,808 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) [2023-08-29 18:26:53,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-29 18:26:53,885 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 18:26:53,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 18:26:53,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 18:26:53,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:26:53,911 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:26:53,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:26:53,956 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:26:53,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672465594] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:26:53,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 18:26:53,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-29 18:26:53,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318272200] [2023-08-29 18:26:53,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 18:26:53,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-29 18:26:53,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:26:53,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-29 18:26:53,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-29 18:26:53,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 544 [2023-08-29 18:26:54,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 165 transitions, 374 flow. Second operand has 13 states, 13 states have (on average 304.3076923076923) internal successors, (3956), 13 states have internal predecessors, (3956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:54,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:26:54,015 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 544 [2023-08-29 18:26:54,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:26:54,450 INFO L130 PetriNetUnfolder]: 822/2920 cut-off events. [2023-08-29 18:26:54,450 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-08-29 18:26:54,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4498 conditions, 2920 events. 822/2920 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 23522 event pairs, 684 based on Foata normal form. 6/2640 useless extension candidates. Maximal degree in co-relation 4440. Up to 1527 conditions per place. [2023-08-29 18:26:54,466 INFO L137 encePairwiseOnDemand]: 541/544 looper letters, 63 selfloop transitions, 11 changer transitions 0/171 dead transitions. [2023-08-29 18:26:54,467 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 171 transitions, 558 flow [2023-08-29 18:26:54,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 18:26:54,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 18:26:54,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3716 transitions. [2023-08-29 18:26:54,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5692401960784313 [2023-08-29 18:26:54,475 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3716 transitions. [2023-08-29 18:26:54,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3716 transitions. [2023-08-29 18:26:54,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:26:54,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3716 transitions. [2023-08-29 18:26:54,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 309.6666666666667) internal successors, (3716), 12 states have internal predecessors, (3716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:54,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 544.0) internal successors, (7072), 13 states have internal predecessors, (7072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:54,499 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 544.0) internal successors, (7072), 13 states have internal predecessors, (7072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:54,500 INFO L175 Difference]: Start difference. First operand has 167 places, 165 transitions, 374 flow. Second operand 12 states and 3716 transitions. [2023-08-29 18:26:54,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 171 transitions, 558 flow [2023-08-29 18:26:54,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 171 transitions, 544 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-29 18:26:54,507 INFO L231 Difference]: Finished difference. Result has 183 places, 171 transitions, 444 flow [2023-08-29 18:26:54,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=544, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=444, PETRI_PLACES=183, PETRI_TRANSITIONS=171} [2023-08-29 18:26:54,509 INFO L281 CegarLoopForPetriNet]: 157 programPoint places, 26 predicate places. [2023-08-29 18:26:54,509 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 171 transitions, 444 flow [2023-08-29 18:26:54,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 304.3076923076923) internal successors, (3956), 13 states have internal predecessors, (3956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:54,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:26:54,511 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-08-29 18:26:54,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-29 18:26:54,715 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,SelfDestructingSolverStorable2 [2023-08-29 18:26:54,716 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 18:26:54,716 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:26:54,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1452513124, now seen corresponding path program 3 times [2023-08-29 18:26:54,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:26:54,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406067128] [2023-08-29 18:26:54,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:26:54,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:26:54,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:26:54,770 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 18:26:54,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:26:54,803 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 18:26:54,804 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 18:26:54,809 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-08-29 18:26:54,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-08-29 18:26:54,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-08-29 18:26:54,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-08-29 18:26:54,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-08-29 18:26:54,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-08-29 18:26:54,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-08-29 18:26:54,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-08-29 18:26:54,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-08-29 18:26:54,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-08-29 18:26:54,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-08-29 18:26:54,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-08-29 18:26:54,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-08-29 18:26:54,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-08-29 18:26:54,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-08-29 18:26:54,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-08-29 18:26:54,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-08-29 18:26:54,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-08-29 18:26:54,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-08-29 18:26:54,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-08-29 18:26:54,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-08-29 18:26:54,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-08-29 18:26:54,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 18:26:54,815 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2023-08-29 18:26:54,817 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 18:26:54,817 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-29 18:26:54,878 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-29 18:26:54,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 400 places, 455 transitions, 928 flow [2023-08-29 18:26:54,995 INFO L130 PetriNetUnfolder]: 118/899 cut-off events. [2023-08-29 18:26:54,996 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 18:26:55,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 913 conditions, 899 events. 118/899 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5601 event pairs, 0 based on Foata normal form. 0/733 useless extension candidates. Maximal degree in co-relation 560. Up to 12 conditions per place. [2023-08-29 18:26:55,011 INFO L82 GeneralOperation]: Start removeDead. Operand has 400 places, 455 transitions, 928 flow [2023-08-29 18:26:55,022 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 400 places, 455 transitions, 928 flow [2023-08-29 18:26:55,022 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:26:55,023 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 400 places, 455 transitions, 928 flow [2023-08-29 18:26:55,023 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 400 places, 455 transitions, 928 flow [2023-08-29 18:26:55,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 400 places, 455 transitions, 928 flow [2023-08-29 18:26:55,151 INFO L130 PetriNetUnfolder]: 118/899 cut-off events. [2023-08-29 18:26:55,152 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 18:26:55,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 913 conditions, 899 events. 118/899 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5601 event pairs, 0 based on Foata normal form. 0/733 useless extension candidates. Maximal degree in co-relation 560. Up to 12 conditions per place. [2023-08-29 18:26:55,205 INFO L119 LiptonReduction]: Number of co-enabled transitions 109956 [2023-08-29 18:26:58,848 INFO L134 LiptonReduction]: Checked pairs total: 452033 [2023-08-29 18:26:58,848 INFO L136 LiptonReduction]: Total number of compositions: 250 [2023-08-29 18:26:58,851 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:26:58,857 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;@7b0a5740, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:26:58,857 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2023-08-29 18:26:58,867 INFO L130 PetriNetUnfolder]: 26/116 cut-off events. [2023-08-29 18:26:58,867 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:26:58,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:26:58,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:26:58,868 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 18:26:58,868 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:26:58,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1156310291, now seen corresponding path program 1 times [2023-08-29 18:26:58,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:26:58,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32670653] [2023-08-29 18:26:58,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:26:58,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:26:58,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:26:58,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:26:58,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:26:58,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32670653] [2023-08-29 18:26:58,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32670653] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:26:58,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:26:58,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:26:58,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087767162] [2023-08-29 18:26:58,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:26:58,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:26:58,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:26:58,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:26:58,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:26:58,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 393 out of 705 [2023-08-29 18:26:58,936 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 255 transitions, 528 flow. Second operand has 3 states, 3 states have (on average 395.0) internal successors, (1185), 3 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:58,936 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:26:58,936 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 393 of 705 [2023-08-29 18:26:58,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:27:04,482 INFO L130 PetriNetUnfolder]: 31138/70970 cut-off events. [2023-08-29 18:27:04,483 INFO L131 PetriNetUnfolder]: For 185/185 co-relation queries the response was YES. [2023-08-29 18:27:04,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115086 conditions, 70970 events. 31138/70970 cut-off events. For 185/185 co-relation queries the response was YES. Maximal size of possible extension queue 1680. Compared 818009 event pairs, 27108 based on Foata normal form. 7962/71563 useless extension candidates. Maximal degree in co-relation 51463. Up to 43993 conditions per place. [2023-08-29 18:27:04,954 INFO L137 encePairwiseOnDemand]: 661/705 looper letters, 84 selfloop transitions, 2 changer transitions 0/215 dead transitions. [2023-08-29 18:27:04,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 215 transitions, 620 flow [2023-08-29 18:27:04,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:27:04,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:27:04,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1307 transitions. [2023-08-29 18:27:04,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6179669030732861 [2023-08-29 18:27:04,959 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1307 transitions. [2023-08-29 18:27:04,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1307 transitions. [2023-08-29 18:27:04,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:27:04,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1307 transitions. [2023-08-29 18:27:04,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 435.6666666666667) internal successors, (1307), 3 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:04,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 705.0) internal successors, (2820), 4 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:04,969 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 705.0) internal successors, (2820), 4 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:04,969 INFO L175 Difference]: Start difference. First operand has 209 places, 255 transitions, 528 flow. Second operand 3 states and 1307 transitions. [2023-08-29 18:27:04,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 215 transitions, 620 flow [2023-08-29 18:27:04,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 215 transitions, 620 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:27:04,977 INFO L231 Difference]: Finished difference. Result has 212 places, 215 transitions, 458 flow [2023-08-29 18:27:04,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=705, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=458, PETRI_PLACES=212, PETRI_TRANSITIONS=215} [2023-08-29 18:27:04,980 INFO L281 CegarLoopForPetriNet]: 209 programPoint places, 3 predicate places. [2023-08-29 18:27:04,981 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 215 transitions, 458 flow [2023-08-29 18:27:04,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 395.0) internal successors, (1185), 3 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:04,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:27:04,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:27:04,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 18:27:04,983 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 18:27:04,983 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:27:04,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1552499289, now seen corresponding path program 1 times [2023-08-29 18:27:04,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:27:04,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50983930] [2023-08-29 18:27:04,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:27:04,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:27:04,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:27:05,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:27:05,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:27:05,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50983930] [2023-08-29 18:27:05,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50983930] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:27:05,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066258112] [2023-08-29 18:27:05,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:27:05,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:27:05,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:27:05,062 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) [2023-08-29 18:27:05,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-29 18:27:05,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:27:05,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-29 18:27:05,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:27:05,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 18:27:05,159 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 18:27:05,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066258112] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:27:05,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 18:27:05,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-29 18:27:05,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319569451] [2023-08-29 18:27:05,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:27:05,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:27:05,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:27:05,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:27:05,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 18:27:05,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 393 out of 705 [2023-08-29 18:27:05,173 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 215 transitions, 458 flow. Second operand has 3 states, 3 states have (on average 395.3333333333333) internal successors, (1186), 3 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:05,173 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:27:05,173 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 393 of 705 [2023-08-29 18:27:05,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:27:10,248 INFO L130 PetriNetUnfolder]: 31206/71248 cut-off events. [2023-08-29 18:27:10,249 INFO L131 PetriNetUnfolder]: For 167/167 co-relation queries the response was YES. [2023-08-29 18:27:10,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115336 conditions, 71248 events. 31206/71248 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 1714. Compared 823622 event pairs, 22416 based on Foata normal form. 0/63720 useless extension candidates. Maximal degree in co-relation 115323. Up to 43937 conditions per place. [2023-08-29 18:27:10,688 INFO L137 encePairwiseOnDemand]: 702/705 looper letters, 105 selfloop transitions, 2 changer transitions 0/236 dead transitions. [2023-08-29 18:27:10,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 236 transitions, 714 flow [2023-08-29 18:27:10,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:27:10,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:27:10,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1286 transitions. [2023-08-29 18:27:10,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6080378250591016 [2023-08-29 18:27:10,692 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1286 transitions. [2023-08-29 18:27:10,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1286 transitions. [2023-08-29 18:27:10,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:27:10,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1286 transitions. [2023-08-29 18:27:10,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 428.6666666666667) internal successors, (1286), 3 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:10,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 705.0) internal successors, (2820), 4 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:10,701 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 705.0) internal successors, (2820), 4 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:10,701 INFO L175 Difference]: Start difference. First operand has 212 places, 215 transitions, 458 flow. Second operand 3 states and 1286 transitions. [2023-08-29 18:27:10,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 236 transitions, 714 flow [2023-08-29 18:27:10,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 236 transitions, 710 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-29 18:27:10,705 INFO L231 Difference]: Finished difference. Result has 214 places, 216 transitions, 466 flow [2023-08-29 18:27:10,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=705, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=466, PETRI_PLACES=214, PETRI_TRANSITIONS=216} [2023-08-29 18:27:10,709 INFO L281 CegarLoopForPetriNet]: 209 programPoint places, 5 predicate places. [2023-08-29 18:27:10,712 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 216 transitions, 466 flow [2023-08-29 18:27:10,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 395.3333333333333) internal successors, (1186), 3 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:10,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:27:10,714 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-29 18:27:10,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-29 18:27:10,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:27:10,918 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 18:27:10,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:27:10,919 INFO L85 PathProgramCache]: Analyzing trace with hash -369078628, now seen corresponding path program 1 times [2023-08-29 18:27:10,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:27:10,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432518721] [2023-08-29 18:27:10,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:27:10,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:27:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:27:10,970 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-29 18:27:10,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:27:10,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432518721] [2023-08-29 18:27:10,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432518721] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:27:10,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560753651] [2023-08-29 18:27:10,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:27:10,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:27:10,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:27:10,973 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 18:27:10,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-29 18:27:11,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:27:11,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 18:27:11,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:27:11,065 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-29 18:27:11,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:27:11,087 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-29 18:27:11,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560753651] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:27:11,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 18:27:11,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 18:27:11,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614632477] [2023-08-29 18:27:11,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 18:27:11,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 18:27:11,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:27:11,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 18:27:11,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 18:27:11,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 392 out of 705 [2023-08-29 18:27:11,112 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 216 transitions, 466 flow. Second operand has 7 states, 7 states have (on average 393.7142857142857) internal successors, (2756), 7 states have internal predecessors, (2756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:11,112 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:27:11,113 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 392 of 705 [2023-08-29 18:27:11,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:27:16,216 INFO L130 PetriNetUnfolder]: 31206/71350 cut-off events. [2023-08-29 18:27:16,216 INFO L131 PetriNetUnfolder]: For 940/940 co-relation queries the response was YES. [2023-08-29 18:27:16,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116223 conditions, 71350 events. 31206/71350 cut-off events. For 940/940 co-relation queries the response was YES. Maximal size of possible extension queue 1715. Compared 824590 event pairs, 27108 based on Foata normal form. 3/64193 useless extension candidates. Maximal degree in co-relation 116195. Up to 43958 conditions per place. [2023-08-29 18:27:16,636 INFO L137 encePairwiseOnDemand]: 702/705 looper letters, 85 selfloop transitions, 5 changer transitions 0/219 dead transitions. [2023-08-29 18:27:16,636 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 219 transitions, 658 flow [2023-08-29 18:27:16,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 18:27:16,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 18:27:16,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2444 transitions. [2023-08-29 18:27:16,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5777777777777777 [2023-08-29 18:27:16,643 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2444 transitions. [2023-08-29 18:27:16,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2444 transitions. [2023-08-29 18:27:16,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:27:16,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2444 transitions. [2023-08-29 18:27:16,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 407.3333333333333) internal successors, (2444), 6 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:16,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 705.0) internal successors, (4935), 7 states have internal predecessors, (4935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:16,659 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 705.0) internal successors, (4935), 7 states have internal predecessors, (4935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:16,659 INFO L175 Difference]: Start difference. First operand has 214 places, 216 transitions, 466 flow. Second operand 6 states and 2444 transitions. [2023-08-29 18:27:16,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 219 transitions, 658 flow [2023-08-29 18:27:16,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 219 transitions, 656 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 18:27:16,665 INFO L231 Difference]: Finished difference. Result has 221 places, 219 transitions, 500 flow [2023-08-29 18:27:16,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=705, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=500, PETRI_PLACES=221, PETRI_TRANSITIONS=219} [2023-08-29 18:27:16,666 INFO L281 CegarLoopForPetriNet]: 209 programPoint places, 12 predicate places. [2023-08-29 18:27:16,666 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 219 transitions, 500 flow [2023-08-29 18:27:16,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 393.7142857142857) internal successors, (2756), 7 states have internal predecessors, (2756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:16,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:27:16,667 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1] [2023-08-29 18:27:16,673 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-29 18:27:16,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:27:16,872 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 18:27:16,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:27:16,873 INFO L85 PathProgramCache]: Analyzing trace with hash -307985538, now seen corresponding path program 2 times [2023-08-29 18:27:16,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:27:16,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183472868] [2023-08-29 18:27:16,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:27:16,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:27:16,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:27:16,953 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-29 18:27:16,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:27:16,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183472868] [2023-08-29 18:27:16,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183472868] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:27:16,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501805645] [2023-08-29 18:27:16,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 18:27:16,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:27:16,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:27:16,955 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 18:27:16,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-29 18:27:17,038 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 18:27:17,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 18:27:17,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 18:27:17,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:27:17,059 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-29 18:27:17,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:27:17,108 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-29 18:27:17,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501805645] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:27:17,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 18:27:17,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-29 18:27:17,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943622167] [2023-08-29 18:27:17,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 18:27:17,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-29 18:27:17,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:27:17,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-29 18:27:17,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-29 18:27:17,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 392 out of 705 [2023-08-29 18:27:17,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 219 transitions, 500 flow. Second operand has 13 states, 13 states have (on average 393.38461538461536) internal successors, (5114), 13 states have internal predecessors, (5114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:17,156 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:27:17,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 392 of 705 [2023-08-29 18:27:17,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:27:22,639 INFO L130 PetriNetUnfolder]: 31206/71356 cut-off events. [2023-08-29 18:27:22,640 INFO L131 PetriNetUnfolder]: For 974/974 co-relation queries the response was YES. [2023-08-29 18:27:22,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116243 conditions, 71356 events. 31206/71356 cut-off events. For 974/974 co-relation queries the response was YES. Maximal size of possible extension queue 1719. Compared 824345 event pairs, 27108 based on Foata normal form. 6/64202 useless extension candidates. Maximal degree in co-relation 116183. Up to 43958 conditions per place. [2023-08-29 18:27:23,064 INFO L137 encePairwiseOnDemand]: 702/705 looper letters, 85 selfloop transitions, 11 changer transitions 0/225 dead transitions. [2023-08-29 18:27:23,064 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 225 transitions, 728 flow [2023-08-29 18:27:23,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 18:27:23,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 18:27:23,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4805 transitions. [2023-08-29 18:27:23,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.567966903073286 [2023-08-29 18:27:23,074 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4805 transitions. [2023-08-29 18:27:23,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4805 transitions. [2023-08-29 18:27:23,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:27:23,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4805 transitions. [2023-08-29 18:27:23,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 400.4166666666667) internal successors, (4805), 12 states have internal predecessors, (4805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:23,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 705.0) internal successors, (9165), 13 states have internal predecessors, (9165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:23,100 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 705.0) internal successors, (9165), 13 states have internal predecessors, (9165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:23,100 INFO L175 Difference]: Start difference. First operand has 221 places, 219 transitions, 500 flow. Second operand 12 states and 4805 transitions. [2023-08-29 18:27:23,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 225 transitions, 728 flow [2023-08-29 18:27:23,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 225 transitions, 714 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-29 18:27:23,106 INFO L231 Difference]: Finished difference. Result has 237 places, 225 transitions, 570 flow [2023-08-29 18:27:23,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=705, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=570, PETRI_PLACES=237, PETRI_TRANSITIONS=225} [2023-08-29 18:27:23,107 INFO L281 CegarLoopForPetriNet]: 209 programPoint places, 28 predicate places. [2023-08-29 18:27:23,107 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 225 transitions, 570 flow [2023-08-29 18:27:23,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 393.38461538461536) internal successors, (5114), 13 states have internal predecessors, (5114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:23,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:27:23,109 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2023-08-29 18:27:23,114 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-29 18:27:23,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:27:23,314 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 18:27:23,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:27:23,314 INFO L85 PathProgramCache]: Analyzing trace with hash -545780034, now seen corresponding path program 3 times [2023-08-29 18:27:23,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:27:23,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333784844] [2023-08-29 18:27:23,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:27:23,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:27:23,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:27:23,344 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 18:27:23,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:27:23,372 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 18:27:23,372 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 18:27:23,373 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (26 of 27 remaining) [2023-08-29 18:27:23,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (25 of 27 remaining) [2023-08-29 18:27:23,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (24 of 27 remaining) [2023-08-29 18:27:23,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (23 of 27 remaining) [2023-08-29 18:27:23,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (22 of 27 remaining) [2023-08-29 18:27:23,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (21 of 27 remaining) [2023-08-29 18:27:23,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (20 of 27 remaining) [2023-08-29 18:27:23,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 27 remaining) [2023-08-29 18:27:23,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (18 of 27 remaining) [2023-08-29 18:27:23,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (17 of 27 remaining) [2023-08-29 18:27:23,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 27 remaining) [2023-08-29 18:27:23,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 27 remaining) [2023-08-29 18:27:23,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 27 remaining) [2023-08-29 18:27:23,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 27 remaining) [2023-08-29 18:27:23,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 27 remaining) [2023-08-29 18:27:23,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 27 remaining) [2023-08-29 18:27:23,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 27 remaining) [2023-08-29 18:27:23,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 27 remaining) [2023-08-29 18:27:23,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 27 remaining) [2023-08-29 18:27:23,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 27 remaining) [2023-08-29 18:27:23,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 27 remaining) [2023-08-29 18:27:23,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 27 remaining) [2023-08-29 18:27:23,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 27 remaining) [2023-08-29 18:27:23,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 27 remaining) [2023-08-29 18:27:23,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 27 remaining) [2023-08-29 18:27:23,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 27 remaining) [2023-08-29 18:27:23,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 27 remaining) [2023-08-29 18:27:23,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 18:27:23,379 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2023-08-29 18:27:23,380 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 18:27:23,380 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-29 18:27:23,432 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-29 18:27:23,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 491 places, 559 transitions, 1148 flow [2023-08-29 18:27:23,582 INFO L130 PetriNetUnfolder]: 168/1283 cut-off events. [2023-08-29 18:27:23,582 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-29 18:27:23,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1311 conditions, 1283 events. 168/1283 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 8481 event pairs, 1 based on Foata normal form. 0/1048 useless extension candidates. Maximal degree in co-relation 907. Up to 16 conditions per place. [2023-08-29 18:27:23,608 INFO L82 GeneralOperation]: Start removeDead. Operand has 491 places, 559 transitions, 1148 flow [2023-08-29 18:27:23,621 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 491 places, 559 transitions, 1148 flow [2023-08-29 18:27:23,622 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:27:23,622 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 491 places, 559 transitions, 1148 flow [2023-08-29 18:27:23,622 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 491 places, 559 transitions, 1148 flow [2023-08-29 18:27:23,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 491 places, 559 transitions, 1148 flow [2023-08-29 18:27:23,961 INFO L130 PetriNetUnfolder]: 168/1283 cut-off events. [2023-08-29 18:27:23,961 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-29 18:27:23,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1311 conditions, 1283 events. 168/1283 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 8481 event pairs, 1 based on Foata normal form. 0/1048 useless extension candidates. Maximal degree in co-relation 907. Up to 16 conditions per place. [2023-08-29 18:27:24,076 INFO L119 LiptonReduction]: Number of co-enabled transitions 197064 [2023-08-29 18:27:27,798 INFO L134 LiptonReduction]: Checked pairs total: 812329 [2023-08-29 18:27:27,799 INFO L136 LiptonReduction]: Total number of compositions: 306 [2023-08-29 18:27:27,800 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:27:27,801 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;@7b0a5740, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:27:27,801 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2023-08-29 18:27:27,808 INFO L130 PetriNetUnfolder]: 26/116 cut-off events. [2023-08-29 18:27:27,808 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:27:27,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:27:27,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:27:27,808 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-08-29 18:27:27,809 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:27:27,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1811251786, now seen corresponding path program 1 times [2023-08-29 18:27:27,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:27:27,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128787623] [2023-08-29 18:27:27,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:27:27,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:27:27,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:27:27,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:27:27,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:27:27,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128787623] [2023-08-29 18:27:27,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128787623] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:27:27,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:27:27,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:27:27,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882019433] [2023-08-29 18:27:27,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:27:27,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:27:27,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:27:27,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:27:27,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:27:27,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 482 out of 865 [2023-08-29 18:27:27,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 318 transitions, 666 flow. Second operand has 3 states, 3 states have (on average 484.0) internal successors, (1452), 3 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:27,850 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:27:27,850 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 482 of 865 [2023-08-29 18:27:27,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand