./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_racing.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_01-simple_racing.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 eddb66a74cd149f880832378d52d5c02c94fd6efcf2d83aeade11bcdaaabe426 --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 18:13:03,555 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 18:13:03,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 18:13:03,590 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 18:13:03,591 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 18:13:03,594 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 18:13:03,596 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 18:13:03,599 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 18:13:03,601 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 18:13:03,605 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 18:13:03,606 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 18:13:03,608 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 18:13:03,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 18:13:03,612 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 18:13:03,613 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 18:13:03,614 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 18:13:03,617 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 18:13:03,618 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 18:13:03,619 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 18:13:03,622 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 18:13:03,629 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 18:13:03,630 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 18:13:03,631 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 18:13:03,632 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 18:13:03,637 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 18:13:03,641 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 18:13:03,641 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 18:13:03,642 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 18:13:03,644 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 18:13:03,645 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 18:13:03,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 18:13:03,650 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 18:13:03,651 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 18:13:03,652 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 18:13:03,653 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 18:13:03,654 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 18:13:03,655 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 18:13:03,655 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 18:13:03,655 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 18:13:03,656 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 18:13:03,657 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 18:13:03,658 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 18:13:03,692 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 18:13:03,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 18:13:03,694 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 18:13:03,694 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 18:13:03,695 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 18:13:03,695 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 18:13:03,696 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 18:13:03,696 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 18:13:03,696 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 18:13:03,696 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 18:13:03,697 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 18:13:03,698 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 18:13:03,698 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 18:13:03,698 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 18:13:03,698 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 18:13:03,698 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 18:13:03,698 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 18:13:03,699 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 18:13:03,699 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 18:13:03,699 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 18:13:03,699 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 18:13:03,699 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 18:13:03,700 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 18:13:03,700 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 18:13:03,700 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 18:13:03,700 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 18:13:03,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 18:13:03,701 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 18:13:03,701 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 18:13:03,701 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 18:13:03,701 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 18:13:03,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 18:13:03,702 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 18:13:03,702 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 18:13:03,702 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 18:13:03,702 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 18:13:03,703 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 18:13:03,703 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eddb66a74cd149f880832378d52d5c02c94fd6efcf2d83aeade11bcdaaabe426 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-29 18:13:04,009 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 18:13:04,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 18:13:04,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 18:13:04,034 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 18:13:04,035 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 18:13:04,035 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_racing.i [2023-08-29 18:13:05,188 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 18:13:05,416 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 18:13:05,417 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_racing.i [2023-08-29 18:13:05,445 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f917ea0e0/9ed7728c8d534ce0acc4806213557956/FLAGeeccf233b [2023-08-29 18:13:05,461 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f917ea0e0/9ed7728c8d534ce0acc4806213557956 [2023-08-29 18:13:05,464 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 18:13:05,465 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 18:13:05,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 18:13:05,468 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 18:13:05,471 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 18:13:05,471 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:13:05" (1/1) ... [2023-08-29 18:13:05,473 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24de4f99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:13:05, skipping insertion in model container [2023-08-29 18:13:05,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:13:05" (1/1) ... [2023-08-29 18:13:05,479 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 18:13:05,530 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 18:13:05,842 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_01-simple_racing.i[30176,30189] [2023-08-29 18:13:05,864 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 18:13:05,881 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 18:13:05,916 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_01-simple_racing.i[30176,30189] [2023-08-29 18:13:05,923 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 18:13:05,964 INFO L208 MainTranslator]: Completed translation [2023-08-29 18:13:05,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:13:05 WrapperNode [2023-08-29 18:13:05,965 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 18:13:05,966 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 18:13:05,966 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 18:13:05,966 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 18:13:05,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:13:05" (1/1) ... [2023-08-29 18:13:06,001 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:13:05" (1/1) ... [2023-08-29 18:13:06,025 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 86 [2023-08-29 18:13:06,025 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 18:13:06,026 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 18:13:06,026 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 18:13:06,026 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 18:13:06,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:13:05" (1/1) ... [2023-08-29 18:13:06,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:13:05" (1/1) ... [2023-08-29 18:13:06,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:13:05" (1/1) ... [2023-08-29 18:13:06,039 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:13:05" (1/1) ... [2023-08-29 18:13:06,045 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:13:05" (1/1) ... [2023-08-29 18:13:06,048 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:13:05" (1/1) ... [2023-08-29 18:13:06,050 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:13:05" (1/1) ... [2023-08-29 18:13:06,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:13:05" (1/1) ... [2023-08-29 18:13:06,054 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 18:13:06,054 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 18:13:06,056 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 18:13:06,056 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 18:13:06,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:13:05" (1/1) ... [2023-08-29 18:13:06,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 18:13:06,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:13:06,085 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 18:13:06,088 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 18:13:06,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 18:13:06,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 18:13:06,120 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 18:13:06,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 18:13:06,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 18:13:06,121 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 18:13:06,121 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 18:13:06,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 18:13:06,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 18:13:06,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 18:13:06,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 18:13:06,123 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 18:13:06,293 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 18:13:06,295 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 18:13:06,591 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 18:13:06,598 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 18:13:06,600 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-29 18:13:06,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:13:06 BoogieIcfgContainer [2023-08-29 18:13:06,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 18:13:06,605 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 18:13:06,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 18:13:06,609 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 18:13:06,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 06:13:05" (1/3) ... [2023-08-29 18:13:06,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70234b56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:13:06, skipping insertion in model container [2023-08-29 18:13:06,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:13:05" (2/3) ... [2023-08-29 18:13:06,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70234b56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:13:06, skipping insertion in model container [2023-08-29 18:13:06,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:13:06" (3/3) ... [2023-08-29 18:13:06,612 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_01-simple_racing.i [2023-08-29 18:13:06,619 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 18:13:06,627 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 18:13:06,627 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-29 18:13:06,628 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 18:13:06,685 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-29 18:13:06,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 130 transitions, 268 flow [2023-08-29 18:13:06,762 INFO L130 PetriNetUnfolder]: 17/171 cut-off events. [2023-08-29 18:13:06,763 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:13:06,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 171 events. 17/171 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 475 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 90. Up to 4 conditions per place. [2023-08-29 18:13:06,771 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 130 transitions, 268 flow [2023-08-29 18:13:06,775 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 130 transitions, 268 flow [2023-08-29 18:13:06,778 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:13:06,786 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 130 transitions, 268 flow [2023-08-29 18:13:06,788 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 130 transitions, 268 flow [2023-08-29 18:13:06,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 130 transitions, 268 flow [2023-08-29 18:13:06,818 INFO L130 PetriNetUnfolder]: 17/171 cut-off events. [2023-08-29 18:13:06,819 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:13:06,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 171 events. 17/171 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 475 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 90. Up to 4 conditions per place. [2023-08-29 18:13:06,822 INFO L119 LiptonReduction]: Number of co-enabled transitions 4136 [2023-08-29 18:13:09,697 INFO L134 LiptonReduction]: Checked pairs total: 10766 [2023-08-29 18:13:09,697 INFO L136 LiptonReduction]: Total number of compositions: 95 [2023-08-29 18:13:09,710 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:13:09,716 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;@30f458df, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:13:09,716 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-29 18:13:09,719 INFO L130 PetriNetUnfolder]: 0/9 cut-off events. [2023-08-29 18:13:09,719 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:13:09,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:13:09,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 18:13:09,721 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-08-29 18:13:09,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:13:09,725 INFO L85 PathProgramCache]: Analyzing trace with hash 14852946, now seen corresponding path program 1 times [2023-08-29 18:13:09,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:13:09,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825832852] [2023-08-29 18:13:09,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:13:09,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:13:09,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:13:09,969 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 18:13:09,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:13:09,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825832852] [2023-08-29 18:13:09,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825832852] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:13:09,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:13:09,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:13:09,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579034776] [2023-08-29 18:13:09,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:13:09,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:13:09,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:13:10,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:13:10,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:13:10,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 225 [2023-08-29 18:13:10,031 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 49 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 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 18:13:10,031 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:13:10,031 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 225 [2023-08-29 18:13:10,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:13:10,146 INFO L130 PetriNetUnfolder]: 120/350 cut-off events. [2023-08-29 18:13:10,146 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:13:10,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627 conditions, 350 events. 120/350 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1583 event pairs, 99 based on Foata normal form. 48/355 useless extension candidates. Maximal degree in co-relation 603. Up to 255 conditions per place. [2023-08-29 18:13:10,154 INFO L137 encePairwiseOnDemand]: 212/225 looper letters, 35 selfloop transitions, 2 changer transitions 2/52 dead transitions. [2023-08-29 18:13:10,155 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 52 transitions, 190 flow [2023-08-29 18:13:10,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:13:10,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:13:10,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 392 transitions. [2023-08-29 18:13:10,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5807407407407408 [2023-08-29 18:13:10,175 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 392 transitions. [2023-08-29 18:13:10,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 392 transitions. [2023-08-29 18:13:10,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:13:10,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 392 transitions. [2023-08-29 18:13:10,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 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 18:13:10,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 225.0) internal successors, (900), 4 states have internal predecessors, (900), 0 states have call successors, (0), 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 18:13:10,192 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 225.0) internal successors, (900), 4 states have internal predecessors, (900), 0 states have call successors, (0), 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 18:13:10,193 INFO L175 Difference]: Start difference. First operand has 42 places, 49 transitions, 106 flow. Second operand 3 states and 392 transitions. [2023-08-29 18:13:10,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 52 transitions, 190 flow [2023-08-29 18:13:10,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 52 transitions, 190 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:13:10,198 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 87 flow [2023-08-29 18:13:10,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2023-08-29 18:13:10,204 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2023-08-29 18:13:10,204 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 87 flow [2023-08-29 18:13:10,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 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 18:13:10,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:13:10,205 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-29 18:13:10,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 18:13:10,206 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-08-29 18:13:10,208 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:13:10,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1383486386, now seen corresponding path program 1 times [2023-08-29 18:13:10,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:13:10,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911543915] [2023-08-29 18:13:10,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:13:10,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:13:10,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:13:10,271 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 18:13:10,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:13:10,317 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 18:13:10,318 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 18:13:10,319 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2023-08-29 18:13:10,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2023-08-29 18:13:10,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2023-08-29 18:13:10,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2023-08-29 18:13:10,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2023-08-29 18:13:10,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2023-08-29 18:13:10,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2023-08-29 18:13:10,330 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2023-08-29 18:13:10,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2023-08-29 18:13:10,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2023-08-29 18:13:10,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2023-08-29 18:13:10,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 18:13:10,332 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-29 18:13:10,335 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 18:13:10,336 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-29 18:13:10,367 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-29 18:13:10,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 176 transitions, 370 flow [2023-08-29 18:13:10,426 INFO L130 PetriNetUnfolder]: 31/288 cut-off events. [2023-08-29 18:13:10,426 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 18:13:10,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 288 events. 31/288 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 948 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 173. Up to 8 conditions per place. [2023-08-29 18:13:10,427 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 176 transitions, 370 flow [2023-08-29 18:13:10,430 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 176 transitions, 370 flow [2023-08-29 18:13:10,430 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:13:10,430 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 162 places, 176 transitions, 370 flow [2023-08-29 18:13:10,430 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 162 places, 176 transitions, 370 flow [2023-08-29 18:13:10,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 176 transitions, 370 flow [2023-08-29 18:13:10,459 INFO L130 PetriNetUnfolder]: 31/288 cut-off events. [2023-08-29 18:13:10,460 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 18:13:10,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 288 events. 31/288 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 948 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 173. Up to 8 conditions per place. [2023-08-29 18:13:10,469 INFO L119 LiptonReduction]: Number of co-enabled transitions 13112 [2023-08-29 18:13:13,291 INFO L134 LiptonReduction]: Checked pairs total: 49794 [2023-08-29 18:13:13,291 INFO L136 LiptonReduction]: Total number of compositions: 111 [2023-08-29 18:13:13,293 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:13:13,294 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;@30f458df, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:13:13,294 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-08-29 18:13:13,297 INFO L130 PetriNetUnfolder]: 0/10 cut-off events. [2023-08-29 18:13:13,297 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:13:13,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:13:13,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 18:13:13,297 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-08-29 18:13:13,298 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:13:13,298 INFO L85 PathProgramCache]: Analyzing trace with hash 25105944, now seen corresponding path program 1 times [2023-08-29 18:13:13,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:13:13,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768585303] [2023-08-29 18:13:13,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:13:13,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:13:13,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:13:13,387 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 18:13:13,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:13:13,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768585303] [2023-08-29 18:13:13,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768585303] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:13:13,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:13:13,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:13:13,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148208694] [2023-08-29 18:13:13,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:13:13,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:13:13,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:13:13,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:13:13,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:13:13,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 287 [2023-08-29 18:13:13,409 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 84 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 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 18:13:13,409 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:13:13,409 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 287 [2023-08-29 18:13:13,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:13:13,897 INFO L130 PetriNetUnfolder]: 2472/5239 cut-off events. [2023-08-29 18:13:13,898 INFO L131 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2023-08-29 18:13:13,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9295 conditions, 5239 events. 2472/5239 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 40335 event pairs, 2319 based on Foata normal form. 788/5318 useless extension candidates. Maximal degree in co-relation 6184. Up to 3973 conditions per place. [2023-08-29 18:13:13,925 INFO L137 encePairwiseOnDemand]: 268/287 looper letters, 46 selfloop transitions, 2 changer transitions 0/80 dead transitions. [2023-08-29 18:13:13,925 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 80 transitions, 274 flow [2023-08-29 18:13:13,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:13:13,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:13:13,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 521 transitions. [2023-08-29 18:13:13,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6051103368176539 [2023-08-29 18:13:13,927 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 521 transitions. [2023-08-29 18:13:13,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 521 transitions. [2023-08-29 18:13:13,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:13:13,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 521 transitions. [2023-08-29 18:13:13,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 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 18:13:13,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 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 18:13:13,932 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 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 18:13:13,932 INFO L175 Difference]: Start difference. First operand has 72 places, 84 transitions, 186 flow. Second operand 3 states and 521 transitions. [2023-08-29 18:13:13,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 80 transitions, 274 flow [2023-08-29 18:13:13,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 80 transitions, 274 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:13:13,935 INFO L231 Difference]: Finished difference. Result has 74 places, 69 transitions, 166 flow [2023-08-29 18:13:13,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=74, PETRI_TRANSITIONS=69} [2023-08-29 18:13:13,936 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 2 predicate places. [2023-08-29 18:13:13,936 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 69 transitions, 166 flow [2023-08-29 18:13:13,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 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 18:13:13,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:13:13,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:13:13,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 18:13:13,938 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-08-29 18:13:13,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:13:13,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1668276544, now seen corresponding path program 1 times [2023-08-29 18:13:13,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:13:13,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196206580] [2023-08-29 18:13:13,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:13:13,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:13:13,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:13:13,973 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 18:13:13,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:13:13,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196206580] [2023-08-29 18:13:13,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196206580] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:13:13,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:13:13,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:13:13,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483760161] [2023-08-29 18:13:13,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:13:13,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:13:13,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:13:13,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:13:13,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:13:14,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 287 [2023-08-29 18:13:14,007 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 69 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 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 18:13:14,007 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:13:14,007 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 287 [2023-08-29 18:13:14,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:13:15,298 INFO L130 PetriNetUnfolder]: 9946/17443 cut-off events. [2023-08-29 18:13:15,298 INFO L131 PetriNetUnfolder]: For 893/893 co-relation queries the response was YES. [2023-08-29 18:13:15,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34413 conditions, 17443 events. 9946/17443 cut-off events. For 893/893 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 130128 event pairs, 3677 based on Foata normal form. 0/15747 useless extension candidates. Maximal degree in co-relation 34307. Up to 8886 conditions per place. [2023-08-29 18:13:15,391 INFO L137 encePairwiseOnDemand]: 268/287 looper letters, 83 selfloop transitions, 14 changer transitions 0/114 dead transitions. [2023-08-29 18:13:15,392 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 114 transitions, 468 flow [2023-08-29 18:13:15,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:13:15,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:13:15,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 505 transitions. [2023-08-29 18:13:15,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.586527293844367 [2023-08-29 18:13:15,394 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 505 transitions. [2023-08-29 18:13:15,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 505 transitions. [2023-08-29 18:13:15,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:13:15,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 505 transitions. [2023-08-29 18:13:15,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 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 18:13:15,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 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 18:13:15,398 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 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 18:13:15,398 INFO L175 Difference]: Start difference. First operand has 74 places, 69 transitions, 166 flow. Second operand 3 states and 505 transitions. [2023-08-29 18:13:15,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 114 transitions, 468 flow [2023-08-29 18:13:15,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 114 transitions, 465 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 18:13:15,429 INFO L231 Difference]: Finished difference. Result has 77 places, 83 transitions, 286 flow [2023-08-29 18:13:15,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=286, PETRI_PLACES=77, PETRI_TRANSITIONS=83} [2023-08-29 18:13:15,430 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 5 predicate places. [2023-08-29 18:13:15,430 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 83 transitions, 286 flow [2023-08-29 18:13:15,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 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 18:13:15,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:13:15,431 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-29 18:13:15,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 18:13:15,431 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-08-29 18:13:15,431 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:13:15,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1150171765, now seen corresponding path program 1 times [2023-08-29 18:13:15,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:13:15,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669308838] [2023-08-29 18:13:15,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:13:15,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:13:15,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:13:15,446 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 18:13:15,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:13:15,462 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 18:13:15,463 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 18:13:15,463 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2023-08-29 18:13:15,463 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2023-08-29 18:13:15,463 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2023-08-29 18:13:15,464 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2023-08-29 18:13:15,464 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2023-08-29 18:13:15,464 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2023-08-29 18:13:15,464 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2023-08-29 18:13:15,464 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2023-08-29 18:13:15,464 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2023-08-29 18:13:15,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2023-08-29 18:13:15,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2023-08-29 18:13:15,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2023-08-29 18:13:15,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2023-08-29 18:13:15,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2023-08-29 18:13:15,466 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2023-08-29 18:13:15,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 18:13:15,466 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-29 18:13:15,467 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 18:13:15,467 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-29 18:13:15,485 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-29 18:13:15,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 222 transitions, 474 flow [2023-08-29 18:13:15,534 INFO L130 PetriNetUnfolder]: 50/448 cut-off events. [2023-08-29 18:13:15,535 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-29 18:13:15,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 476 conditions, 448 events. 50/448 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1669 event pairs, 1 based on Foata normal form. 0/370 useless extension candidates. Maximal degree in co-relation 296. Up to 16 conditions per place. [2023-08-29 18:13:15,539 INFO L82 GeneralOperation]: Start removeDead. Operand has 203 places, 222 transitions, 474 flow [2023-08-29 18:13:15,542 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 203 places, 222 transitions, 474 flow [2023-08-29 18:13:15,542 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:13:15,543 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 203 places, 222 transitions, 474 flow [2023-08-29 18:13:15,543 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 203 places, 222 transitions, 474 flow [2023-08-29 18:13:15,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 222 transitions, 474 flow [2023-08-29 18:13:15,588 INFO L130 PetriNetUnfolder]: 50/448 cut-off events. [2023-08-29 18:13:15,588 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-29 18:13:15,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 476 conditions, 448 events. 50/448 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1669 event pairs, 1 based on Foata normal form. 0/370 useless extension candidates. Maximal degree in co-relation 296. Up to 16 conditions per place. [2023-08-29 18:13:15,609 INFO L119 LiptonReduction]: Number of co-enabled transitions 25872 [2023-08-29 18:13:18,556 INFO L134 LiptonReduction]: Checked pairs total: 97327 [2023-08-29 18:13:18,556 INFO L136 LiptonReduction]: Total number of compositions: 130 [2023-08-29 18:13:18,558 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:13:18,558 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;@30f458df, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:13:18,559 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-08-29 18:13:18,571 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2023-08-29 18:13:18,571 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:13:18,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:13:18,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 18:13:18,571 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-29 18:13:18,572 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:13:18,572 INFO L85 PathProgramCache]: Analyzing trace with hash 37355896, now seen corresponding path program 1 times [2023-08-29 18:13:18,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:13:18,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216382666] [2023-08-29 18:13:18,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:13:18,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:13:18,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:13:18,614 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 18:13:18,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:13:18,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216382666] [2023-08-29 18:13:18,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216382666] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:13:18,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:13:18,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:13:18,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821362597] [2023-08-29 18:13:18,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:13:18,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:13:18,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:13:18,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:13:18,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:13:18,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 352 [2023-08-29 18:13:18,627 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 115 transitions, 260 flow. Second operand has 3 states, 3 states have (on average 189.33333333333334) internal successors, (568), 3 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:13:18,627 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:13:18,627 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 352 [2023-08-29 18:13:18,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:13:23,484 INFO L130 PetriNetUnfolder]: 43367/75200 cut-off events. [2023-08-29 18:13:23,484 INFO L131 PetriNetUnfolder]: For 1549/1549 co-relation queries the response was YES. [2023-08-29 18:13:23,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136975 conditions, 75200 events. 43367/75200 cut-off events. For 1549/1549 co-relation queries the response was YES. Maximal size of possible extension queue 1865. Compared 711368 event pairs, 28031 based on Foata normal form. 11777/78620 useless extension candidates. Maximal degree in co-relation 9408. Up to 60642 conditions per place. [2023-08-29 18:13:24,096 INFO L137 encePairwiseOnDemand]: 327/352 looper letters, 58 selfloop transitions, 2 changer transitions 0/105 dead transitions. [2023-08-29 18:13:24,097 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 105 transitions, 360 flow [2023-08-29 18:13:24,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:13:24,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:13:24,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 653 transitions. [2023-08-29 18:13:24,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6183712121212122 [2023-08-29 18:13:24,100 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 653 transitions. [2023-08-29 18:13:24,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 653 transitions. [2023-08-29 18:13:24,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:13:24,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 653 transitions. [2023-08-29 18:13:24,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 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 18:13:24,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 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 18:13:24,105 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 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 18:13:24,105 INFO L175 Difference]: Start difference. First operand has 98 places, 115 transitions, 260 flow. Second operand 3 states and 653 transitions. [2023-08-29 18:13:24,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 105 transitions, 360 flow [2023-08-29 18:13:24,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 105 transitions, 360 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:13:24,112 INFO L231 Difference]: Finished difference. Result has 100 places, 94 transitions, 228 flow [2023-08-29 18:13:24,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=100, PETRI_TRANSITIONS=94} [2023-08-29 18:13:24,115 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 2 predicate places. [2023-08-29 18:13:24,115 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 94 transitions, 228 flow [2023-08-29 18:13:24,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.33333333333334) internal successors, (568), 3 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:13:24,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:13:24,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:13:24,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 18:13:24,117 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-29 18:13:24,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:13:24,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1619876772, now seen corresponding path program 1 times [2023-08-29 18:13:24,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:13:24,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703110362] [2023-08-29 18:13:24,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:13:24,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:13:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:13:24,157 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 18:13:24,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:13:24,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703110362] [2023-08-29 18:13:24,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703110362] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:13:24,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:13:24,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:13:24,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366686095] [2023-08-29 18:13:24,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:13:24,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:13:24,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:13:24,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:13:24,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:13:24,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 352 [2023-08-29 18:13:24,201 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 94 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 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 18:13:24,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:13:24,202 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 352 [2023-08-29 18:13:24,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:13:50,452 INFO L130 PetriNetUnfolder]: 308262/462102 cut-off events. [2023-08-29 18:13:50,452 INFO L131 PetriNetUnfolder]: For 21376/21376 co-relation queries the response was YES. [2023-08-29 18:13:51,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 914009 conditions, 462102 events. 308262/462102 cut-off events. For 21376/21376 co-relation queries the response was YES. Maximal size of possible extension queue 8043. Compared 4106934 event pairs, 124028 based on Foata normal form. 0/418305 useless extension candidates. Maximal degree in co-relation 913897. Up to 231260 conditions per place. [2023-08-29 18:13:53,057 INFO L137 encePairwiseOnDemand]: 325/352 looper letters, 111 selfloop transitions, 20 changer transitions 0/155 dead transitions. [2023-08-29 18:13:53,057 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 155 transitions, 640 flow [2023-08-29 18:13:53,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:13:53,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:13:53,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 631 transitions. [2023-08-29 18:13:53,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5975378787878788 [2023-08-29 18:13:53,060 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 631 transitions. [2023-08-29 18:13:53,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 631 transitions. [2023-08-29 18:13:53,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:13:53,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 631 transitions. [2023-08-29 18:13:53,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 210.33333333333334) internal successors, (631), 3 states have internal predecessors, (631), 0 states have call successors, (0), 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 18:13:53,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 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 18:13:53,064 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 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 18:13:53,064 INFO L175 Difference]: Start difference. First operand has 100 places, 94 transitions, 228 flow. Second operand 3 states and 631 transitions. [2023-08-29 18:13:53,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 155 transitions, 640 flow [2023-08-29 18:13:53,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 155 transitions, 637 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 18:13:53,085 INFO L231 Difference]: Finished difference. Result has 103 places, 114 transitions, 400 flow [2023-08-29 18:13:53,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=400, PETRI_PLACES=103, PETRI_TRANSITIONS=114} [2023-08-29 18:13:53,086 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 5 predicate places. [2023-08-29 18:13:53,086 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 114 transitions, 400 flow [2023-08-29 18:13:53,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 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 18:13:53,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:13:53,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:13:53,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 18:13:53,087 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-29 18:13:53,088 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:13:53,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1535038878, now seen corresponding path program 1 times [2023-08-29 18:13:53,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:13:53,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654325816] [2023-08-29 18:13:53,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:13:53,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:13:53,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:13:53,119 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 18:13:53,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:13:53,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654325816] [2023-08-29 18:13:53,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654325816] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:13:53,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:13:53,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:13:53,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705281208] [2023-08-29 18:13:53,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:13:53,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:13:53,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:13:53,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:13:53,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:13:53,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 352 [2023-08-29 18:13:53,164 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 114 transitions, 400 flow. Second operand has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 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 18:13:53,165 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:13:53,165 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 352 [2023-08-29 18:13:53,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:13:57,075 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([944] L702-7-->L702-8: Formula: (= |v_t_funThread2of3ForFork0_#t~nondet6_3| |v_#race~global~0_7|) InVars {t_funThread2of3ForFork0_#t~nondet6=|v_t_funThread2of3ForFork0_#t~nondet6_3|} OutVars{t_funThread2of3ForFork0_#t~nondet6=|v_t_funThread2of3ForFork0_#t~nondet6_3|, #race~global~0=|v_#race~global~0_7|} AuxVars[] AssignedVars[#race~global~0][103], [211#true, Black: 208#(= |ULTIMATE.start_main_~i~0#1| 0), 33#L709-4true, 156#L702-4true, t_funThread1of3ForFork0InUse, Black: 213#(= |#race~global~0| 0), 47#L702-8true, t_funThread2of3ForFork0InUse, t_funThread3of3ForFork0InUse, 54#L702-10true, 217#true]) [2023-08-29 18:13:57,075 INFO L383 tUnfolder$Statistics]: this new event has 39 ancestors and is cut-off event [2023-08-29 18:13:57,075 INFO L386 tUnfolder$Statistics]: existing Event has 39 ancestors and is cut-off event [2023-08-29 18:13:57,075 INFO L386 tUnfolder$Statistics]: existing Event has 39 ancestors and is cut-off event [2023-08-29 18:13:57,075 INFO L386 tUnfolder$Statistics]: existing Event has 39 ancestors and is cut-off event [2023-08-29 18:13:57,839 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1103] L702-5-->L702-7: Formula: (= (+ |v_t_funThread3of3ForFork0_#t~post5_9| 1) v_~global~0_61) InVars {t_funThread3of3ForFork0_#t~post5=|v_t_funThread3of3ForFork0_#t~post5_9|} OutVars{t_funThread3of3ForFork0_#t~nondet6=|v_t_funThread3of3ForFork0_#t~nondet6_13|, t_funThread3of3ForFork0_#t~post5=|v_t_funThread3of3ForFork0_#t~post5_9|, ~global~0=v_~global~0_61} AuxVars[] AssignedVars[t_funThread3of3ForFork0_#t~nondet6, ~global~0][113], [Black: 208#(= |ULTIMATE.start_main_~i~0#1| 0), 33#L709-4true, Black: 211#true, t_funThread1of3ForFork0InUse, 3#L702-7true, 213#(= |#race~global~0| 0), t_funThread2of3ForFork0InUse, 91#L702-7true, t_funThread3of3ForFork0InUse, 54#L702-10true, 219#(= |t_funThread1of3ForFork0_#t~nondet6| |#race~global~0|)]) [2023-08-29 18:13:57,839 INFO L383 tUnfolder$Statistics]: this new event has 40 ancestors and is cut-off event [2023-08-29 18:13:57,839 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2023-08-29 18:13:57,839 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2023-08-29 18:13:57,839 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2023-08-29 18:13:59,863 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1109] L702-15-->L702-17: Formula: (= |v_#race~global~0_56| 0) InVars {} OutVars{t_funThread1of3ForFork0_#t~nondet7=|v_t_funThread1of3ForFork0_#t~nondet7_7|, #race~global~0=|v_#race~global~0_56|} AuxVars[] AssignedVars[t_funThread1of3ForFork0_#t~nondet7, #race~global~0][75], [Black: 208#(= |ULTIMATE.start_main_~i~0#1| 0), 156#L702-4true, 29#L702-17true, Black: 211#true, 70#L702-4true, t_funThread1of3ForFork0InUse, 213#(= |#race~global~0| 0), 100#ULTIMATE.startEXITtrue, t_funThread2of3ForFork0InUse, t_funThread3of3ForFork0InUse, 217#true]) [2023-08-29 18:13:59,863 INFO L383 tUnfolder$Statistics]: this new event has 43 ancestors and is cut-off event [2023-08-29 18:13:59,863 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is cut-off event [2023-08-29 18:13:59,863 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is cut-off event [2023-08-29 18:13:59,864 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is cut-off event [2023-08-29 18:13:59,864 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1109] L702-15-->L702-17: Formula: (= |v_#race~global~0_56| 0) InVars {} OutVars{t_funThread1of3ForFork0_#t~nondet7=|v_t_funThread1of3ForFork0_#t~nondet7_7|, #race~global~0=|v_#race~global~0_56|} AuxVars[] AssignedVars[t_funThread1of3ForFork0_#t~nondet7, #race~global~0][75], [Black: 208#(= |ULTIMATE.start_main_~i~0#1| 0), 156#L702-4true, 29#L702-17true, Black: 211#true, 70#L702-4true, t_funThread1of3ForFork0InUse, 213#(= |#race~global~0| 0), 50#L711-9true, t_funThread2of3ForFork0InUse, t_funThread3of3ForFork0InUse, 217#true]) [2023-08-29 18:13:59,864 INFO L383 tUnfolder$Statistics]: this new event has 43 ancestors and is cut-off event [2023-08-29 18:13:59,864 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is cut-off event [2023-08-29 18:13:59,864 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is cut-off event [2023-08-29 18:13:59,864 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is cut-off event [2023-08-29 18:14:20,861 INFO L130 PetriNetUnfolder]: 278526/430424 cut-off events. [2023-08-29 18:14:20,861 INFO L131 PetriNetUnfolder]: For 194480/196373 co-relation queries the response was YES. [2023-08-29 18:14:21,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1025390 conditions, 430424 events. 278526/430424 cut-off events. For 194480/196373 co-relation queries the response was YES. Maximal size of possible extension queue 8949. Compared 4079602 event pairs, 185765 based on Foata normal form. 67/381357 useless extension candidates. Maximal degree in co-relation 178319. Up to 339044 conditions per place. [2023-08-29 18:14:23,410 INFO L137 encePairwiseOnDemand]: 339/352 looper letters, 100 selfloop transitions, 22 changer transitions 0/166 dead transitions. [2023-08-29 18:14:23,410 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 166 transitions, 826 flow [2023-08-29 18:14:23,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:14:23,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:14:23,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 624 transitions. [2023-08-29 18:14:23,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2023-08-29 18:14:23,412 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 624 transitions. [2023-08-29 18:14:23,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 624 transitions. [2023-08-29 18:14:23,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:14:23,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 624 transitions. [2023-08-29 18:14:23,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 0 states have call successors, (0), 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 18:14:23,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 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 18:14:23,416 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 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 18:14:23,416 INFO L175 Difference]: Start difference. First operand has 103 places, 114 transitions, 400 flow. Second operand 3 states and 624 transitions. [2023-08-29 18:14:23,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 166 transitions, 826 flow [2023-08-29 18:14:23,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 166 transitions, 768 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 18:14:23,858 INFO L231 Difference]: Finished difference. Result has 105 places, 134 transitions, 566 flow [2023-08-29 18:14:23,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=566, PETRI_PLACES=105, PETRI_TRANSITIONS=134} [2023-08-29 18:14:23,859 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 7 predicate places. [2023-08-29 18:14:23,859 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 134 transitions, 566 flow [2023-08-29 18:14:23,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 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 18:14:23,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:14:23,860 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-29 18:14:23,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 18:14:23,860 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-29 18:14:23,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:14:23,861 INFO L85 PathProgramCache]: Analyzing trace with hash 651194579, now seen corresponding path program 1 times [2023-08-29 18:14:23,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:14:23,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198093130] [2023-08-29 18:14:23,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:14:23,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:14:23,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:14:23,884 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 18:14:23,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:14:23,911 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 18:14:23,912 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 18:14:23,912 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2023-08-29 18:14:23,912 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (17 of 19 remaining) [2023-08-29 18:14:23,912 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 19 remaining) [2023-08-29 18:14:23,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (15 of 19 remaining) [2023-08-29 18:14:23,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (14 of 19 remaining) [2023-08-29 18:14:23,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (13 of 19 remaining) [2023-08-29 18:14:23,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (12 of 19 remaining) [2023-08-29 18:14:23,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 19 remaining) [2023-08-29 18:14:23,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 19 remaining) [2023-08-29 18:14:23,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 19 remaining) [2023-08-29 18:14:23,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 19 remaining) [2023-08-29 18:14:23,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 19 remaining) [2023-08-29 18:14:23,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 19 remaining) [2023-08-29 18:14:23,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 19 remaining) [2023-08-29 18:14:23,915 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 19 remaining) [2023-08-29 18:14:23,915 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 19 remaining) [2023-08-29 18:14:23,915 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 19 remaining) [2023-08-29 18:14:23,915 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 19 remaining) [2023-08-29 18:14:23,915 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 19 remaining) [2023-08-29 18:14:23,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 18:14:23,916 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-29 18:14:23,917 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 18:14:23,917 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-29 18:14:23,952 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-29 18:14:23,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 268 transitions, 580 flow [2023-08-29 18:14:24,029 INFO L130 PetriNetUnfolder]: 81/696 cut-off events. [2023-08-29 18:14:24,030 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-29 18:14:24,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 751 conditions, 696 events. 81/696 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2936 event pairs, 6 based on Foata normal form. 0/578 useless extension candidates. Maximal degree in co-relation 468. Up to 32 conditions per place. [2023-08-29 18:14:24,038 INFO L82 GeneralOperation]: Start removeDead. Operand has 244 places, 268 transitions, 580 flow [2023-08-29 18:14:24,043 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 244 places, 268 transitions, 580 flow [2023-08-29 18:14:24,044 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:14:24,044 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 244 places, 268 transitions, 580 flow [2023-08-29 18:14:24,044 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 244 places, 268 transitions, 580 flow [2023-08-29 18:14:24,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 268 transitions, 580 flow [2023-08-29 18:14:24,118 INFO L130 PetriNetUnfolder]: 81/696 cut-off events. [2023-08-29 18:14:24,119 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-29 18:14:24,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 751 conditions, 696 events. 81/696 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2936 event pairs, 6 based on Foata normal form. 0/578 useless extension candidates. Maximal degree in co-relation 468. Up to 32 conditions per place. [2023-08-29 18:14:24,150 INFO L119 LiptonReduction]: Number of co-enabled transitions 42768 [2023-08-29 18:14:26,895 INFO L134 LiptonReduction]: Checked pairs total: 186884 [2023-08-29 18:14:26,896 INFO L136 LiptonReduction]: Total number of compositions: 147 [2023-08-29 18:14:26,897 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:14:26,898 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;@30f458df, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:14:26,898 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-08-29 18:14:26,899 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2023-08-29 18:14:26,899 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:14:26,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:14:26,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 18:14:26,900 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-29 18:14:26,900 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:14:26,900 INFO L85 PathProgramCache]: Analyzing trace with hash 51546238, now seen corresponding path program 1 times [2023-08-29 18:14:26,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:14:26,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263596424] [2023-08-29 18:14:26,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:14:26,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:14:26,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:14:26,928 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 18:14:26,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:14:26,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263596424] [2023-08-29 18:14:26,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263596424] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:14:26,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:14:26,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:14:26,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273044313] [2023-08-29 18:14:26,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:14:26,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:14:26,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:14:26,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:14:26,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:14:26,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 415 [2023-08-29 18:14:26,942 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 146 transitions, 336 flow. Second operand has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 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 18:14:26,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:14:26,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 415 [2023-08-29 18:14:26,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:15:45,274 INFO L130 PetriNetUnfolder]: 667680/988127 cut-off events. [2023-08-29 18:15:45,275 INFO L131 PetriNetUnfolder]: For 25076/25076 co-relation queries the response was YES. [2023-08-29 18:15:48,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1867548 conditions, 988127 events. 667680/988127 cut-off events. For 25076/25076 co-relation queries the response was YES. Maximal size of possible extension queue 18809. Compared 9726440 event pairs, 648495 based on Foata normal form. 218651/1114619 useless extension candidates. Maximal degree in co-relation 330810. Up to 864805 conditions per place. [2023-08-29 18:15:55,193 INFO L137 encePairwiseOnDemand]: 384/415 looper letters, 70 selfloop transitions, 2 changer transitions 0/130 dead transitions. [2023-08-29 18:15:55,193 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 130 transitions, 448 flow [2023-08-29 18:15:55,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:15:55,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:15:55,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 785 transitions. [2023-08-29 18:15:55,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6305220883534136 [2023-08-29 18:15:55,203 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 785 transitions. [2023-08-29 18:15:55,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 785 transitions. [2023-08-29 18:15:55,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:15:55,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 785 transitions. [2023-08-29 18:15:55,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 261.6666666666667) internal successors, (785), 3 states have internal predecessors, (785), 0 states have call successors, (0), 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 18:15:55,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 415.0) internal successors, (1660), 4 states have internal predecessors, (1660), 0 states have call successors, (0), 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 18:15:55,212 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 415.0) internal successors, (1660), 4 states have internal predecessors, (1660), 0 states have call successors, (0), 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 18:15:55,212 INFO L175 Difference]: Start difference. First operand has 124 places, 146 transitions, 336 flow. Second operand 3 states and 785 transitions. [2023-08-29 18:15:55,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 130 transitions, 448 flow [2023-08-29 18:15:55,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 130 transitions, 448 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:15:55,226 INFO L231 Difference]: Finished difference. Result has 126 places, 119 transitions, 292 flow [2023-08-29 18:15:55,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=126, PETRI_TRANSITIONS=119} [2023-08-29 18:15:55,227 INFO L281 CegarLoopForPetriNet]: 124 programPoint places, 2 predicate places. [2023-08-29 18:15:55,228 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 119 transitions, 292 flow [2023-08-29 18:15:55,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 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 18:15:55,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:15:55,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:15:55,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 18:15:55,229 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-29 18:15:55,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:15:55,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1037345644, now seen corresponding path program 1 times [2023-08-29 18:15:55,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:15:55,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320653766] [2023-08-29 18:15:55,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:15:55,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:15:55,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:15:55,294 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 18:15:55,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:15:55,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320653766] [2023-08-29 18:15:55,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320653766] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:15:55,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:15:55,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:15:55,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969443311] [2023-08-29 18:15:55,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:15:55,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:15:55,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:15:55,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:15:55,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:15:55,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 415 [2023-08-29 18:15:55,350 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 119 transitions, 292 flow. Second operand has 3 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 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 18:15:55,350 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:15:55,350 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 415 [2023-08-29 18:15:55,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand