./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/pthread-ext/40_barrier_vf-b.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/pthread-ext/40_barrier_vf-b.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 7e4eda3d9731a5d805cffabe3eaaa057ba5ed6235ab584548c3730cf4f9dedf3 --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 09:36:28,972 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 09:36:28,975 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 09:36:29,010 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 09:36:29,011 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 09:36:29,014 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 09:36:29,017 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 09:36:29,020 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 09:36:29,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 09:36:29,029 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 09:36:29,030 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 09:36:29,033 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 09:36:29,034 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 09:36:29,036 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 09:36:29,038 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 09:36:29,046 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 09:36:29,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 09:36:29,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 09:36:29,050 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 09:36:29,054 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 09:36:29,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 09:36:29,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 09:36:29,072 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 09:36:29,072 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 09:36:29,078 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 09:36:29,078 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 09:36:29,079 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 09:36:29,081 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 09:36:29,081 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 09:36:29,083 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 09:36:29,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 09:36:29,084 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 09:36:29,085 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 09:36:29,086 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 09:36:29,087 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 09:36:29,087 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 09:36:29,088 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 09:36:29,088 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 09:36:29,088 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 09:36:29,089 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 09:36:29,089 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 09:36:29,091 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 09:36:29,134 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 09:36:29,135 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 09:36:29,136 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 09:36:29,136 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 09:36:29,137 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 09:36:29,137 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 09:36:29,137 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 09:36:29,138 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 09:36:29,138 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 09:36:29,138 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 09:36:29,139 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 09:36:29,139 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 09:36:29,139 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 09:36:29,140 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 09:36:29,140 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 09:36:29,140 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 09:36:29,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 09:36:29,140 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 09:36:29,140 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 09:36:29,141 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 09:36:29,141 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 09:36:29,141 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 09:36:29,141 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 09:36:29,141 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 09:36:29,142 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 09:36:29,142 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 09:36:29,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 09:36:29,142 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 09:36:29,143 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 09:36:29,143 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 09:36:29,143 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 09:36:29,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 09:36:29,144 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 09:36:29,144 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 09:36:29,144 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 09:36:29,144 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 09:36:29,144 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 09:36:29,144 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e4eda3d9731a5d805cffabe3eaaa057ba5ed6235ab584548c3730cf4f9dedf3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-29 09:36:29,480 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 09:36:29,509 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 09:36:29,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 09:36:29,513 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 09:36:29,513 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 09:36:29,514 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/40_barrier_vf-b.i [2023-08-29 09:36:30,663 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 09:36:30,927 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 09:36:30,928 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/40_barrier_vf-b.i [2023-08-29 09:36:30,939 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fe41c2ee/0dc7c5cce3b94bbeb759e7baa194e236/FLAG5cdec4301 [2023-08-29 09:36:30,956 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fe41c2ee/0dc7c5cce3b94bbeb759e7baa194e236 [2023-08-29 09:36:30,958 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 09:36:30,959 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 09:36:30,960 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 09:36:30,960 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 09:36:30,963 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 09:36:30,964 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:36:30" (1/1) ... [2023-08-29 09:36:30,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@717e9a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:36:30, skipping insertion in model container [2023-08-29 09:36:30,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:36:30" (1/1) ... [2023-08-29 09:36:30,973 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 09:36:31,019 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 09:36:31,364 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/40_barrier_vf-b.i[30481,30494] [2023-08-29 09:36:31,371 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 09:36:31,383 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 09:36:31,420 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/40_barrier_vf-b.i[30481,30494] [2023-08-29 09:36:31,425 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 09:36:31,465 INFO L208 MainTranslator]: Completed translation [2023-08-29 09:36:31,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:36:31 WrapperNode [2023-08-29 09:36:31,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 09:36:31,467 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 09:36:31,467 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 09:36:31,467 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 09:36:31,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:36:31" (1/1) ... [2023-08-29 09:36:31,501 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:36:31" (1/1) ... [2023-08-29 09:36:31,529 INFO L138 Inliner]: procedures = 170, calls = 18, calls flagged for inlining = 10, calls inlined = 12, statements flattened = 118 [2023-08-29 09:36:31,530 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 09:36:31,530 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 09:36:31,531 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 09:36:31,531 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 09:36:31,539 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:36:31" (1/1) ... [2023-08-29 09:36:31,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:36:31" (1/1) ... [2023-08-29 09:36:31,548 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:36:31" (1/1) ... [2023-08-29 09:36:31,548 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:36:31" (1/1) ... [2023-08-29 09:36:31,564 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:36:31" (1/1) ... [2023-08-29 09:36:31,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:36:31" (1/1) ... [2023-08-29 09:36:31,568 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:36:31" (1/1) ... [2023-08-29 09:36:31,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:36:31" (1/1) ... [2023-08-29 09:36:31,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 09:36:31,572 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 09:36:31,572 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 09:36:31,572 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 09:36:31,577 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:36:31" (1/1) ... [2023-08-29 09:36:31,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 09:36:31,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 09:36:31,606 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 09:36:31,636 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 09:36:31,650 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-29 09:36:31,651 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-29 09:36:31,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 09:36:31,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 09:36:31,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 09:36:31,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 09:36:31,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 09:36:31,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 09:36:31,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 09:36:31,653 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 09:36:31,752 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 09:36:31,754 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 09:36:31,969 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 09:36:32,095 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 09:36:32,095 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-29 09:36:32,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:36:32 BoogieIcfgContainer [2023-08-29 09:36:32,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 09:36:32,100 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 09:36:32,100 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 09:36:32,103 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 09:36:32,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 09:36:30" (1/3) ... [2023-08-29 09:36:32,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@197f6155 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:36:32, skipping insertion in model container [2023-08-29 09:36:32,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:36:31" (2/3) ... [2023-08-29 09:36:32,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@197f6155 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:36:32, skipping insertion in model container [2023-08-29 09:36:32,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:36:32" (3/3) ... [2023-08-29 09:36:32,106 INFO L112 eAbstractionObserver]: Analyzing ICFG 40_barrier_vf-b.i [2023-08-29 09:36:32,114 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 09:36:32,122 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 09:36:32,123 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2023-08-29 09:36:32,123 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 09:36:32,170 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 09:36:32,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 90 transitions, 185 flow [2023-08-29 09:36:32,237 INFO L130 PetriNetUnfolder]: 5/100 cut-off events. [2023-08-29 09:36:32,237 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:36:32,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 100 events. 5/100 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 128 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 75. Up to 4 conditions per place. [2023-08-29 09:36:32,243 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 90 transitions, 185 flow [2023-08-29 09:36:32,247 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 90 transitions, 185 flow [2023-08-29 09:36:32,250 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 09:36:32,258 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 90 transitions, 185 flow [2023-08-29 09:36:32,260 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 90 transitions, 185 flow [2023-08-29 09:36:32,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 90 transitions, 185 flow [2023-08-29 09:36:32,298 INFO L130 PetriNetUnfolder]: 5/100 cut-off events. [2023-08-29 09:36:32,298 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:36:32,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 100 events. 5/100 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 128 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 75. Up to 4 conditions per place. [2023-08-29 09:36:32,302 INFO L119 LiptonReduction]: Number of co-enabled transitions 1638 [2023-08-29 09:36:34,862 INFO L134 LiptonReduction]: Checked pairs total: 1578 [2023-08-29 09:36:34,862 INFO L136 LiptonReduction]: Total number of compositions: 128 [2023-08-29 09:36:34,885 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 09:36:34,893 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;@70095d58, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 09:36:34,893 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-08-29 09:36:34,897 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-29 09:36:34,898 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:36:34,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:36:34,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 09:36:34,900 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-29 09:36:34,905 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:36:34,905 INFO L85 PathProgramCache]: Analyzing trace with hash 16916205, now seen corresponding path program 1 times [2023-08-29 09:36:34,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:36:34,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393063293] [2023-08-29 09:36:34,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:36:34,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:36:35,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:36:35,097 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 09:36:35,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:36:35,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393063293] [2023-08-29 09:36:35,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393063293] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:36:35,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:36:35,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 09:36:35,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417637906] [2023-08-29 09:36:35,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:36:35,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 09:36:35,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:36:35,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 09:36:35,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 09:36:35,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 218 [2023-08-29 09:36:35,142 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 22 transitions, 49 flow. Second operand has 2 states, 2 states have (on average 73.0) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 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 09:36:35,142 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:36:35,142 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 218 [2023-08-29 09:36:35,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:36:35,167 INFO L130 PetriNetUnfolder]: 0/6 cut-off events. [2023-08-29 09:36:35,167 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:36:35,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17 conditions, 6 events. 0/6 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 3/9 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2023-08-29 09:36:35,168 INFO L137 encePairwiseOnDemand]: 201/218 looper letters, 4 selfloop transitions, 0 changer transitions 0/5 dead transitions. [2023-08-29 09:36:35,169 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 9 places, 5 transitions, 23 flow [2023-08-29 09:36:35,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 09:36:35,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 09:36:35,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 163 transitions. [2023-08-29 09:36:35,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3738532110091743 [2023-08-29 09:36:35,186 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 163 transitions. [2023-08-29 09:36:35,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 163 transitions. [2023-08-29 09:36:35,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:36:35,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 163 transitions. [2023-08-29 09:36:35,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 81.5) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 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 09:36:35,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 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 09:36:35,203 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 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 09:36:35,205 INFO L175 Difference]: Start difference. First operand has 25 places, 22 transitions, 49 flow. Second operand 2 states and 163 transitions. [2023-08-29 09:36:35,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 9 places, 5 transitions, 23 flow [2023-08-29 09:36:35,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 9 places, 5 transitions, 23 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 09:36:35,209 INFO L231 Difference]: Finished difference. Result has 9 places, 5 transitions, 15 flow [2023-08-29 09:36:35,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=15, PETRI_DIFFERENCE_MINUEND_PLACES=8, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=15, PETRI_PLACES=9, PETRI_TRANSITIONS=5} [2023-08-29 09:36:35,214 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, -16 predicate places. [2023-08-29 09:36:35,214 INFO L495 AbstractCegarLoop]: Abstraction has has 9 places, 5 transitions, 15 flow [2023-08-29 09:36:35,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 73.0) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 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 09:36:35,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:36:35,215 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-29 09:36:35,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 09:36:35,216 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-08-29 09:36:35,216 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:36:35,217 INFO L85 PathProgramCache]: Analyzing trace with hash -923404047, now seen corresponding path program 1 times [2023-08-29 09:36:35,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:36:35,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700335691] [2023-08-29 09:36:35,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:36:35,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:36:35,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:36:35,259 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 09:36:35,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:36:35,295 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 09:36:35,295 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 09:36:35,298 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2023-08-29 09:36:35,302 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 31 remaining) [2023-08-29 09:36:35,303 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 31 remaining) [2023-08-29 09:36:35,307 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 31 remaining) [2023-08-29 09:36:35,308 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 31 remaining) [2023-08-29 09:36:35,308 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 31 remaining) [2023-08-29 09:36:35,308 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (24 of 31 remaining) [2023-08-29 09:36:35,308 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (23 of 31 remaining) [2023-08-29 09:36:35,309 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (22 of 31 remaining) [2023-08-29 09:36:35,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (21 of 31 remaining) [2023-08-29 09:36:35,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (20 of 31 remaining) [2023-08-29 09:36:35,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (19 of 31 remaining) [2023-08-29 09:36:35,310 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (18 of 31 remaining) [2023-08-29 09:36:35,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (17 of 31 remaining) [2023-08-29 09:36:35,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (16 of 31 remaining) [2023-08-29 09:36:35,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (15 of 31 remaining) [2023-08-29 09:36:35,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 31 remaining) [2023-08-29 09:36:35,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 31 remaining) [2023-08-29 09:36:35,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 31 remaining) [2023-08-29 09:36:35,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 31 remaining) [2023-08-29 09:36:35,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 31 remaining) [2023-08-29 09:36:35,316 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (9 of 31 remaining) [2023-08-29 09:36:35,316 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (8 of 31 remaining) [2023-08-29 09:36:35,317 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (7 of 31 remaining) [2023-08-29 09:36:35,317 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 31 remaining) [2023-08-29 09:36:35,317 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (5 of 31 remaining) [2023-08-29 09:36:35,318 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (4 of 31 remaining) [2023-08-29 09:36:35,318 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (3 of 31 remaining) [2023-08-29 09:36:35,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (2 of 31 remaining) [2023-08-29 09:36:35,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (1 of 31 remaining) [2023-08-29 09:36:35,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (0 of 31 remaining) [2023-08-29 09:36:35,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 09:36:35,320 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-29 09:36:35,325 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 09:36:35,325 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-29 09:36:35,362 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 09:36:35,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 154 transitions, 320 flow [2023-08-29 09:36:35,427 INFO L130 PetriNetUnfolder]: 9/176 cut-off events. [2023-08-29 09:36:35,428 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 09:36:35,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 176 events. 9/176 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 433 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 138. Up to 6 conditions per place. [2023-08-29 09:36:35,433 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 154 transitions, 320 flow [2023-08-29 09:36:35,436 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 152 places, 154 transitions, 320 flow [2023-08-29 09:36:35,436 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 09:36:35,437 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 152 places, 154 transitions, 320 flow [2023-08-29 09:36:35,438 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 152 places, 154 transitions, 320 flow [2023-08-29 09:36:35,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 154 transitions, 320 flow [2023-08-29 09:36:35,472 INFO L130 PetriNetUnfolder]: 9/176 cut-off events. [2023-08-29 09:36:35,472 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 09:36:35,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 176 events. 9/176 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 433 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 138. Up to 6 conditions per place. [2023-08-29 09:36:35,480 INFO L119 LiptonReduction]: Number of co-enabled transitions 11340 [2023-08-29 09:36:36,620 INFO L134 LiptonReduction]: Checked pairs total: 47390 [2023-08-29 09:36:36,624 INFO L136 LiptonReduction]: Total number of compositions: 92 [2023-08-29 09:36:36,626 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 09:36:36,627 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;@70095d58, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 09:36:36,628 INFO L358 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2023-08-29 09:36:36,632 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-29 09:36:36,632 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:36:36,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:36:36,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 09:36:36,633 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2023-08-29 09:36:36,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:36:36,636 INFO L85 PathProgramCache]: Analyzing trace with hash 26958159, now seen corresponding path program 1 times [2023-08-29 09:36:36,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:36:36,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090938501] [2023-08-29 09:36:36,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:36:36,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:36:36,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:36:36,674 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 09:36:36,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:36:36,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090938501] [2023-08-29 09:36:36,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090938501] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:36:36,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:36:36,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 09:36:36,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739071236] [2023-08-29 09:36:36,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:36:36,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 09:36:36,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:36:36,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 09:36:36,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 09:36:36,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 246 [2023-08-29 09:36:36,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 90 transitions, 192 flow. Second operand has 2 states, 2 states have (on average 120.0) internal successors, (240), 2 states have internal predecessors, (240), 0 states have call successors, (0), 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 09:36:36,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:36:36,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 246 [2023-08-29 09:36:36,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:36:36,847 INFO L130 PetriNetUnfolder]: 573/1408 cut-off events. [2023-08-29 09:36:36,847 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2023-08-29 09:36:36,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2424 conditions, 1408 events. 573/1408 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 9658 event pairs, 517 based on Foata normal form. 56/1312 useless extension candidates. Maximal degree in co-relation 1865. Up to 966 conditions per place. [2023-08-29 09:36:36,857 INFO L137 encePairwiseOnDemand]: 227/246 looper letters, 31 selfloop transitions, 0 changer transitions 0/71 dead transitions. [2023-08-29 09:36:36,857 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 71 transitions, 216 flow [2023-08-29 09:36:36,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 09:36:36,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 09:36:36,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 286 transitions. [2023-08-29 09:36:36,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5813008130081301 [2023-08-29 09:36:36,860 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 286 transitions. [2023-08-29 09:36:36,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 286 transitions. [2023-08-29 09:36:36,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:36:36,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 286 transitions. [2023-08-29 09:36:36,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 143.0) internal successors, (286), 2 states have internal predecessors, (286), 0 states have call successors, (0), 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 09:36:36,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 246.0) internal successors, (738), 3 states have internal predecessors, (738), 0 states have call successors, (0), 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 09:36:36,864 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 246.0) internal successors, (738), 3 states have internal predecessors, (738), 0 states have call successors, (0), 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 09:36:36,865 INFO L175 Difference]: Start difference. First operand has 93 places, 90 transitions, 192 flow. Second operand 2 states and 286 transitions. [2023-08-29 09:36:36,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 71 transitions, 216 flow [2023-08-29 09:36:36,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 71 transitions, 214 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-29 09:36:36,867 INFO L231 Difference]: Finished difference. Result has 75 places, 71 transitions, 152 flow [2023-08-29 09:36:36,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=152, PETRI_PLACES=75, PETRI_TRANSITIONS=71} [2023-08-29 09:36:36,868 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -18 predicate places. [2023-08-29 09:36:36,868 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 71 transitions, 152 flow [2023-08-29 09:36:36,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 120.0) internal successors, (240), 2 states have internal predecessors, (240), 0 states have call successors, (0), 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 09:36:36,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:36:36,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 09:36:36,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 09:36:36,869 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2023-08-29 09:36:36,870 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:36:36,870 INFO L85 PathProgramCache]: Analyzing trace with hash 137010257, now seen corresponding path program 1 times [2023-08-29 09:36:36,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:36:36,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325513983] [2023-08-29 09:36:36,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:36:36,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:36:36,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:36:36,952 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 09:36:36,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:36:36,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325513983] [2023-08-29 09:36:36,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325513983] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:36:36,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:36:36,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 09:36:36,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982983651] [2023-08-29 09:36:36,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:36:36,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 09:36:36,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:36:36,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 09:36:36,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 09:36:36,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 246 [2023-08-29 09:36:36,990 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 71 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 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 09:36:36,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:36:36,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 246 [2023-08-29 09:36:36,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:36:37,318 INFO L130 PetriNetUnfolder]: 1227/2854 cut-off events. [2023-08-29 09:36:37,319 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2023-08-29 09:36:37,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5071 conditions, 2854 events. 1227/2854 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 21982 event pairs, 419 based on Foata normal form. 0/2653 useless extension candidates. Maximal degree in co-relation 5066. Up to 1476 conditions per place. [2023-08-29 09:36:37,336 INFO L137 encePairwiseOnDemand]: 230/246 looper letters, 66 selfloop transitions, 12 changer transitions 0/107 dead transitions. [2023-08-29 09:36:37,336 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 107 transitions, 385 flow [2023-08-29 09:36:37,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 09:36:37,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 09:36:37,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 388 transitions. [2023-08-29 09:36:37,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5257452574525745 [2023-08-29 09:36:37,340 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 388 transitions. [2023-08-29 09:36:37,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 388 transitions. [2023-08-29 09:36:37,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:36:37,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 388 transitions. [2023-08-29 09:36:37,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 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 09:36:37,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 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 09:36:37,346 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 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 09:36:37,346 INFO L175 Difference]: Start difference. First operand has 75 places, 71 transitions, 152 flow. Second operand 3 states and 388 transitions. [2023-08-29 09:36:37,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 107 transitions, 385 flow [2023-08-29 09:36:37,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 107 transitions, 385 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 09:36:37,349 INFO L231 Difference]: Finished difference. Result has 79 places, 83 transitions, 256 flow [2023-08-29 09:36:37,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=79, PETRI_TRANSITIONS=83} [2023-08-29 09:36:37,352 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -14 predicate places. [2023-08-29 09:36:37,352 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 83 transitions, 256 flow [2023-08-29 09:36:37,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 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 09:36:37,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:36:37,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 09:36:37,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 09:36:37,353 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2023-08-29 09:36:37,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:36:37,353 INFO L85 PathProgramCache]: Analyzing trace with hash 2135459533, now seen corresponding path program 1 times [2023-08-29 09:36:37,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:36:37,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621482168] [2023-08-29 09:36:37,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:36:37,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:36:37,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:36:37,421 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 09:36:37,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:36:37,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621482168] [2023-08-29 09:36:37,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621482168] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:36:37,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:36:37,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 09:36:37,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950615929] [2023-08-29 09:36:37,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:36:37,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 09:36:37,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:36:37,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 09:36:37,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 09:36:37,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 246 [2023-08-29 09:36:37,462 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 83 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 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 09:36:37,462 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:36:37,462 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 246 [2023-08-29 09:36:37,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:36:37,777 INFO L130 PetriNetUnfolder]: 1179/2799 cut-off events. [2023-08-29 09:36:37,777 INFO L131 PetriNetUnfolder]: For 764/782 co-relation queries the response was YES. [2023-08-29 09:36:37,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5757 conditions, 2799 events. 1179/2799 cut-off events. For 764/782 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 22061 event pairs, 813 based on Foata normal form. 2/2523 useless extension candidates. Maximal degree in co-relation 5750. Up to 1780 conditions per place. [2023-08-29 09:36:37,796 INFO L137 encePairwiseOnDemand]: 238/246 looper letters, 54 selfloop transitions, 11 changer transitions 0/105 dead transitions. [2023-08-29 09:36:37,796 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 105 transitions, 461 flow [2023-08-29 09:36:37,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 09:36:37,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 09:36:37,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 370 transitions. [2023-08-29 09:36:37,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5013550135501355 [2023-08-29 09:36:37,799 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 370 transitions. [2023-08-29 09:36:37,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 370 transitions. [2023-08-29 09:36:37,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:36:37,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 370 transitions. [2023-08-29 09:36:37,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 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 09:36:37,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 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 09:36:37,803 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 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 09:36:37,803 INFO L175 Difference]: Start difference. First operand has 79 places, 83 transitions, 256 flow. Second operand 3 states and 370 transitions. [2023-08-29 09:36:37,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 105 transitions, 461 flow [2023-08-29 09:36:37,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 105 transitions, 427 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 09:36:37,811 INFO L231 Difference]: Finished difference. Result has 81 places, 92 transitions, 330 flow [2023-08-29 09:36:37,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=330, PETRI_PLACES=81, PETRI_TRANSITIONS=92} [2023-08-29 09:36:37,813 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -12 predicate places. [2023-08-29 09:36:37,813 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 92 transitions, 330 flow [2023-08-29 09:36:37,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 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 09:36:37,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:36:37,815 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-29 09:36:37,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 09:36:37,815 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2023-08-29 09:36:37,815 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:36:37,815 INFO L85 PathProgramCache]: Analyzing trace with hash -969641594, now seen corresponding path program 1 times [2023-08-29 09:36:37,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:36:37,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178095629] [2023-08-29 09:36:37,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:36:37,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:36:37,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:36:37,840 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 09:36:37,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:36:37,858 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 09:36:37,861 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 09:36:37,862 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (45 of 46 remaining) [2023-08-29 09:36:37,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (44 of 46 remaining) [2023-08-29 09:36:37,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (43 of 46 remaining) [2023-08-29 09:36:37,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (42 of 46 remaining) [2023-08-29 09:36:37,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (41 of 46 remaining) [2023-08-29 09:36:37,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (40 of 46 remaining) [2023-08-29 09:36:37,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (39 of 46 remaining) [2023-08-29 09:36:37,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (38 of 46 remaining) [2023-08-29 09:36:37,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (37 of 46 remaining) [2023-08-29 09:36:37,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (36 of 46 remaining) [2023-08-29 09:36:37,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (35 of 46 remaining) [2023-08-29 09:36:37,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (34 of 46 remaining) [2023-08-29 09:36:37,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (33 of 46 remaining) [2023-08-29 09:36:37,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (32 of 46 remaining) [2023-08-29 09:36:37,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (31 of 46 remaining) [2023-08-29 09:36:37,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (30 of 46 remaining) [2023-08-29 09:36:37,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 46 remaining) [2023-08-29 09:36:37,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 46 remaining) [2023-08-29 09:36:37,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 46 remaining) [2023-08-29 09:36:37,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 46 remaining) [2023-08-29 09:36:37,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 46 remaining) [2023-08-29 09:36:37,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (24 of 46 remaining) [2023-08-29 09:36:37,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (23 of 46 remaining) [2023-08-29 09:36:37,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (22 of 46 remaining) [2023-08-29 09:36:37,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (21 of 46 remaining) [2023-08-29 09:36:37,868 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (20 of 46 remaining) [2023-08-29 09:36:37,868 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (19 of 46 remaining) [2023-08-29 09:36:37,868 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (18 of 46 remaining) [2023-08-29 09:36:37,868 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (17 of 46 remaining) [2023-08-29 09:36:37,868 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (16 of 46 remaining) [2023-08-29 09:36:37,868 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (15 of 46 remaining) [2023-08-29 09:36:37,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 46 remaining) [2023-08-29 09:36:37,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 46 remaining) [2023-08-29 09:36:37,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 46 remaining) [2023-08-29 09:36:37,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 46 remaining) [2023-08-29 09:36:37,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 46 remaining) [2023-08-29 09:36:37,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (9 of 46 remaining) [2023-08-29 09:36:37,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (8 of 46 remaining) [2023-08-29 09:36:37,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (7 of 46 remaining) [2023-08-29 09:36:37,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 46 remaining) [2023-08-29 09:36:37,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (5 of 46 remaining) [2023-08-29 09:36:37,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (4 of 46 remaining) [2023-08-29 09:36:37,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (3 of 46 remaining) [2023-08-29 09:36:37,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (2 of 46 remaining) [2023-08-29 09:36:37,871 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (1 of 46 remaining) [2023-08-29 09:36:37,871 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (0 of 46 remaining) [2023-08-29 09:36:37,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 09:36:37,871 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-29 09:36:37,872 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 09:36:37,872 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-29 09:36:37,920 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 09:36:37,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 218 transitions, 457 flow [2023-08-29 09:36:37,949 INFO L130 PetriNetUnfolder]: 13/252 cut-off events. [2023-08-29 09:36:37,950 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-29 09:36:37,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 252 events. 13/252 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 824 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 201. Up to 8 conditions per place. [2023-08-29 09:36:37,953 INFO L82 GeneralOperation]: Start removeDead. Operand has 215 places, 218 transitions, 457 flow [2023-08-29 09:36:37,956 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 215 places, 218 transitions, 457 flow [2023-08-29 09:36:37,956 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 09:36:37,956 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 215 places, 218 transitions, 457 flow [2023-08-29 09:36:37,957 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 215 places, 218 transitions, 457 flow [2023-08-29 09:36:37,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 218 transitions, 457 flow [2023-08-29 09:36:37,984 INFO L130 PetriNetUnfolder]: 13/252 cut-off events. [2023-08-29 09:36:37,985 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-29 09:36:37,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 252 events. 13/252 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 824 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 201. Up to 8 conditions per place. [2023-08-29 09:36:38,000 INFO L119 LiptonReduction]: Number of co-enabled transitions 29106 [2023-08-29 09:36:39,420 INFO L134 LiptonReduction]: Checked pairs total: 132266 [2023-08-29 09:36:39,420 INFO L136 LiptonReduction]: Total number of compositions: 127 [2023-08-29 09:36:39,422 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 09:36:39,422 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;@70095d58, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 09:36:39,422 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2023-08-29 09:36:39,424 INFO L130 PetriNetUnfolder]: 0/6 cut-off events. [2023-08-29 09:36:39,424 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:36:39,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:36:39,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 09:36:39,425 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2023-08-29 09:36:39,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:36:39,425 INFO L85 PathProgramCache]: Analyzing trace with hash 39488133, now seen corresponding path program 1 times [2023-08-29 09:36:39,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:36:39,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893024140] [2023-08-29 09:36:39,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:36:39,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:36:39,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:36:39,436 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 09:36:39,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:36:39,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893024140] [2023-08-29 09:36:39,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893024140] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:36:39,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:36:39,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 09:36:39,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251072976] [2023-08-29 09:36:39,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:36:39,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 09:36:39,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:36:39,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 09:36:39,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 09:36:39,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 345 [2023-08-29 09:36:39,440 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 134 transitions, 289 flow. Second operand has 2 states, 2 states have (on average 167.0) internal successors, (334), 2 states have internal predecessors, (334), 0 states have call successors, (0), 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 09:36:39,440 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:36:39,440 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 345 [2023-08-29 09:36:39,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:36:42,055 INFO L130 PetriNetUnfolder]: 14405/25245 cut-off events. [2023-08-29 09:36:42,056 INFO L131 PetriNetUnfolder]: For 1153/1153 co-relation queries the response was YES. [2023-08-29 09:36:42,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46312 conditions, 25245 events. 14405/25245 cut-off events. For 1153/1153 co-relation queries the response was YES. Maximal size of possible extension queue 919. Compared 218389 event pairs, 13175 based on Foata normal form. 1594/24347 useless extension candidates. Maximal degree in co-relation 27945. Up to 20258 conditions per place. [2023-08-29 09:36:42,327 INFO L137 encePairwiseOnDemand]: 316/345 looper letters, 47 selfloop transitions, 0 changer transitions 0/105 dead transitions. [2023-08-29 09:36:42,327 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 105 transitions, 325 flow [2023-08-29 09:36:42,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 09:36:42,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 09:36:42,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 406 transitions. [2023-08-29 09:36:42,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5884057971014492 [2023-08-29 09:36:42,330 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 406 transitions. [2023-08-29 09:36:42,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 406 transitions. [2023-08-29 09:36:42,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:36:42,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 406 transitions. [2023-08-29 09:36:42,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 203.0) internal successors, (406), 2 states have internal predecessors, (406), 0 states have call successors, (0), 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 09:36:42,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 345.0) internal successors, (1035), 3 states have internal predecessors, (1035), 0 states have call successors, (0), 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 09:36:42,334 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 345.0) internal successors, (1035), 3 states have internal predecessors, (1035), 0 states have call successors, (0), 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 09:36:42,334 INFO L175 Difference]: Start difference. First operand has 137 places, 134 transitions, 289 flow. Second operand 2 states and 406 transitions. [2023-08-29 09:36:42,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 105 transitions, 325 flow [2023-08-29 09:36:42,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 105 transitions, 319 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-29 09:36:42,339 INFO L231 Difference]: Finished difference. Result has 110 places, 105 transitions, 225 flow [2023-08-29 09:36:42,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=225, PETRI_PLACES=110, PETRI_TRANSITIONS=105} [2023-08-29 09:36:42,340 INFO L281 CegarLoopForPetriNet]: 137 programPoint places, -27 predicate places. [2023-08-29 09:36:42,341 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 105 transitions, 225 flow [2023-08-29 09:36:42,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 167.0) internal successors, (334), 2 states have internal predecessors, (334), 0 states have call successors, (0), 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 09:36:42,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:36:42,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 09:36:42,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 09:36:42,343 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2023-08-29 09:36:42,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:36:42,344 INFO L85 PathProgramCache]: Analyzing trace with hash -706579580, now seen corresponding path program 1 times [2023-08-29 09:36:42,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:36:42,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923846275] [2023-08-29 09:36:42,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:36:42,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:36:42,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:36:42,376 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 09:36:42,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:36:42,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923846275] [2023-08-29 09:36:42,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923846275] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:36:42,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:36:42,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 09:36:42,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892859516] [2023-08-29 09:36:42,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:36:42,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 09:36:42,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:36:42,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 09:36:42,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 09:36:42,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 345 [2023-08-29 09:36:42,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 105 transitions, 225 flow. Second operand has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 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 09:36:42,421 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:36:42,421 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 345 [2023-08-29 09:36:42,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:36:48,520 INFO L130 PetriNetUnfolder]: 48594/85601 cut-off events. [2023-08-29 09:36:48,520 INFO L131 PetriNetUnfolder]: For 1372/1372 co-relation queries the response was YES. [2023-08-29 09:36:48,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157312 conditions, 85601 events. 48594/85601 cut-off events. For 1372/1372 co-relation queries the response was YES. Maximal size of possible extension queue 2688. Compared 854283 event pairs, 19035 based on Foata normal form. 0/78510 useless extension candidates. Maximal degree in co-relation 157306. Up to 45897 conditions per place. [2023-08-29 09:36:49,252 INFO L137 encePairwiseOnDemand]: 321/345 looper letters, 100 selfloop transitions, 18 changer transitions 0/160 dead transitions. [2023-08-29 09:36:49,253 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 160 transitions, 581 flow [2023-08-29 09:36:49,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 09:36:49,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 09:36:49,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 547 transitions. [2023-08-29 09:36:49,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5285024154589372 [2023-08-29 09:36:49,255 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 547 transitions. [2023-08-29 09:36:49,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 547 transitions. [2023-08-29 09:36:49,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:36:49,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 547 transitions. [2023-08-29 09:36:49,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.33333333333334) internal successors, (547), 3 states have internal predecessors, (547), 0 states have call successors, (0), 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 09:36:49,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 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 09:36:49,260 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 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 09:36:49,260 INFO L175 Difference]: Start difference. First operand has 110 places, 105 transitions, 225 flow. Second operand 3 states and 547 transitions. [2023-08-29 09:36:49,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 160 transitions, 581 flow [2023-08-29 09:36:49,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 160 transitions, 581 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 09:36:49,270 INFO L231 Difference]: Finished difference. Result has 114 places, 123 transitions, 381 flow [2023-08-29 09:36:49,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=381, PETRI_PLACES=114, PETRI_TRANSITIONS=123} [2023-08-29 09:36:49,272 INFO L281 CegarLoopForPetriNet]: 137 programPoint places, -23 predicate places. [2023-08-29 09:36:49,272 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 123 transitions, 381 flow [2023-08-29 09:36:49,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 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 09:36:49,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:36:49,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 09:36:49,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 09:36:49,273 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2023-08-29 09:36:49,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:36:49,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1923040633, now seen corresponding path program 1 times [2023-08-29 09:36:49,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:36:49,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693648226] [2023-08-29 09:36:49,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:36:49,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:36:49,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:36:49,310 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 09:36:49,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:36:49,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693648226] [2023-08-29 09:36:49,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693648226] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:36:49,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:36:49,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 09:36:49,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857116194] [2023-08-29 09:36:49,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:36:49,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 09:36:49,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:36:49,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 09:36:49,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 09:36:49,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 345 [2023-08-29 09:36:49,360 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 123 transitions, 381 flow. Second operand has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 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 09:36:49,360 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:36:49,360 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 345 [2023-08-29 09:36:49,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:36:55,248 INFO L130 PetriNetUnfolder]: 47278/85208 cut-off events. [2023-08-29 09:36:55,249 INFO L131 PetriNetUnfolder]: For 27473/28431 co-relation queries the response was YES. [2023-08-29 09:36:55,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183459 conditions, 85208 events. 47278/85208 cut-off events. For 27473/28431 co-relation queries the response was YES. Maximal size of possible extension queue 2844. Compared 878578 event pairs, 31535 based on Foata normal form. 96/76375 useless extension candidates. Maximal degree in co-relation 183451. Up to 59494 conditions per place. [2023-08-29 09:36:55,880 INFO L137 encePairwiseOnDemand]: 333/345 looper letters, 88 selfloop transitions, 21 changer transitions 0/168 dead transitions. [2023-08-29 09:36:55,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 168 transitions, 753 flow [2023-08-29 09:36:55,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 09:36:55,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 09:36:55,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 533 transitions. [2023-08-29 09:36:55,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.514975845410628 [2023-08-29 09:36:55,882 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 533 transitions. [2023-08-29 09:36:55,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 533 transitions. [2023-08-29 09:36:55,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:36:55,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 533 transitions. [2023-08-29 09:36:55,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 09:36:55,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 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 09:36:55,888 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 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 09:36:55,888 INFO L175 Difference]: Start difference. First operand has 114 places, 123 transitions, 381 flow. Second operand 3 states and 533 transitions. [2023-08-29 09:36:55,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 168 transitions, 753 flow [2023-08-29 09:36:55,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 168 transitions, 699 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 09:36:55,979 INFO L231 Difference]: Finished difference. Result has 116 places, 142 transitions, 543 flow [2023-08-29 09:36:55,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=543, PETRI_PLACES=116, PETRI_TRANSITIONS=142} [2023-08-29 09:36:55,981 INFO L281 CegarLoopForPetriNet]: 137 programPoint places, -21 predicate places. [2023-08-29 09:36:55,981 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 142 transitions, 543 flow [2023-08-29 09:36:55,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 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 09:36:55,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:36:55,981 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 09:36:55,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 09:36:55,981 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2023-08-29 09:36:55,982 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:36:55,982 INFO L85 PathProgramCache]: Analyzing trace with hash 710950488, now seen corresponding path program 1 times [2023-08-29 09:36:55,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:36:55,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734925313] [2023-08-29 09:36:55,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:36:55,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:36:55,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:36:56,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 09:36:56,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:36:56,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734925313] [2023-08-29 09:36:56,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734925313] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:36:56,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:36:56,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 09:36:56,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690727753] [2023-08-29 09:36:56,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:36:56,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 09:36:56,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:36:56,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 09:36:56,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 09:36:56,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 345 [2023-08-29 09:36:56,055 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 142 transitions, 543 flow. Second operand has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 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 09:36:56,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:36:56,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 345 [2023-08-29 09:36:56,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:37:02,569 INFO L130 PetriNetUnfolder]: 52919/93847 cut-off events. [2023-08-29 09:37:02,569 INFO L131 PetriNetUnfolder]: For 52905/56109 co-relation queries the response was YES. [2023-08-29 09:37:02,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217724 conditions, 93847 events. 52919/93847 cut-off events. For 52905/56109 co-relation queries the response was YES. Maximal size of possible extension queue 3169. Compared 962728 event pairs, 33476 based on Foata normal form. 178/82896 useless extension candidates. Maximal degree in co-relation 217715. Up to 66710 conditions per place. [2023-08-29 09:37:03,229 INFO L137 encePairwiseOnDemand]: 333/345 looper letters, 105 selfloop transitions, 33 changer transitions 0/197 dead transitions. [2023-08-29 09:37:03,229 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 197 transitions, 1068 flow [2023-08-29 09:37:03,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 09:37:03,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 09:37:03,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 532 transitions. [2023-08-29 09:37:03,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5140096618357488 [2023-08-29 09:37:03,232 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 532 transitions. [2023-08-29 09:37:03,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 532 transitions. [2023-08-29 09:37:03,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:37:03,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 532 transitions. [2023-08-29 09:37:03,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 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 09:37:03,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 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 09:37:03,235 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 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 09:37:03,236 INFO L175 Difference]: Start difference. First operand has 116 places, 142 transitions, 543 flow. Second operand 3 states and 532 transitions. [2023-08-29 09:37:03,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 197 transitions, 1068 flow [2023-08-29 09:37:03,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 197 transitions, 1000 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 09:37:03,489 INFO L231 Difference]: Finished difference. Result has 118 places, 171 transitions, 855 flow [2023-08-29 09:37:03,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=855, PETRI_PLACES=118, PETRI_TRANSITIONS=171} [2023-08-29 09:37:03,490 INFO L281 CegarLoopForPetriNet]: 137 programPoint places, -19 predicate places. [2023-08-29 09:37:03,490 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 171 transitions, 855 flow [2023-08-29 09:37:03,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 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 09:37:03,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:37:03,490 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-29 09:37:03,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 09:37:03,491 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2023-08-29 09:37:03,491 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:37:03,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1595472154, now seen corresponding path program 1 times [2023-08-29 09:37:03,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:37:03,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582125381] [2023-08-29 09:37:03,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:37:03,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:37:03,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:37:03,502 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 09:37:03,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:37:03,511 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 09:37:03,512 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 09:37:03,512 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (60 of 61 remaining) [2023-08-29 09:37:03,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (59 of 61 remaining) [2023-08-29 09:37:03,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (58 of 61 remaining) [2023-08-29 09:37:03,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (57 of 61 remaining) [2023-08-29 09:37:03,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (56 of 61 remaining) [2023-08-29 09:37:03,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (55 of 61 remaining) [2023-08-29 09:37:03,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (54 of 61 remaining) [2023-08-29 09:37:03,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (53 of 61 remaining) [2023-08-29 09:37:03,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (52 of 61 remaining) [2023-08-29 09:37:03,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (51 of 61 remaining) [2023-08-29 09:37:03,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (50 of 61 remaining) [2023-08-29 09:37:03,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (49 of 61 remaining) [2023-08-29 09:37:03,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (48 of 61 remaining) [2023-08-29 09:37:03,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (47 of 61 remaining) [2023-08-29 09:37:03,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (46 of 61 remaining) [2023-08-29 09:37:03,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (45 of 61 remaining) [2023-08-29 09:37:03,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (44 of 61 remaining) [2023-08-29 09:37:03,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (43 of 61 remaining) [2023-08-29 09:37:03,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (42 of 61 remaining) [2023-08-29 09:37:03,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (41 of 61 remaining) [2023-08-29 09:37:03,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (40 of 61 remaining) [2023-08-29 09:37:03,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (39 of 61 remaining) [2023-08-29 09:37:03,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (38 of 61 remaining) [2023-08-29 09:37:03,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (37 of 61 remaining) [2023-08-29 09:37:03,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (36 of 61 remaining) [2023-08-29 09:37:03,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (35 of 61 remaining) [2023-08-29 09:37:03,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (34 of 61 remaining) [2023-08-29 09:37:03,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (33 of 61 remaining) [2023-08-29 09:37:03,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (32 of 61 remaining) [2023-08-29 09:37:03,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (31 of 61 remaining) [2023-08-29 09:37:03,517 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (30 of 61 remaining) [2023-08-29 09:37:03,517 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 61 remaining) [2023-08-29 09:37:03,517 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 61 remaining) [2023-08-29 09:37:03,517 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 61 remaining) [2023-08-29 09:37:03,517 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 61 remaining) [2023-08-29 09:37:03,517 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 61 remaining) [2023-08-29 09:37:03,517 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (24 of 61 remaining) [2023-08-29 09:37:03,518 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (23 of 61 remaining) [2023-08-29 09:37:03,518 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (22 of 61 remaining) [2023-08-29 09:37:03,518 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (21 of 61 remaining) [2023-08-29 09:37:03,518 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (20 of 61 remaining) [2023-08-29 09:37:03,518 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (19 of 61 remaining) [2023-08-29 09:37:03,518 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (18 of 61 remaining) [2023-08-29 09:37:03,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (17 of 61 remaining) [2023-08-29 09:37:03,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (16 of 61 remaining) [2023-08-29 09:37:03,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (15 of 61 remaining) [2023-08-29 09:37:03,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 61 remaining) [2023-08-29 09:37:03,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 61 remaining) [2023-08-29 09:37:03,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 61 remaining) [2023-08-29 09:37:03,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 61 remaining) [2023-08-29 09:37:03,520 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 61 remaining) [2023-08-29 09:37:03,520 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (9 of 61 remaining) [2023-08-29 09:37:03,520 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (8 of 61 remaining) [2023-08-29 09:37:03,520 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (7 of 61 remaining) [2023-08-29 09:37:03,520 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 61 remaining) [2023-08-29 09:37:03,520 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (5 of 61 remaining) [2023-08-29 09:37:03,520 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (4 of 61 remaining) [2023-08-29 09:37:03,521 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (3 of 61 remaining) [2023-08-29 09:37:03,521 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (2 of 61 remaining) [2023-08-29 09:37:03,521 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (1 of 61 remaining) [2023-08-29 09:37:03,521 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (0 of 61 remaining) [2023-08-29 09:37:03,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-29 09:37:03,521 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-29 09:37:03,522 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 09:37:03,522 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-29 09:37:03,552 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 09:37:03,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 278 places, 282 transitions, 596 flow [2023-08-29 09:37:03,594 INFO L130 PetriNetUnfolder]: 17/328 cut-off events. [2023-08-29 09:37:03,595 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-29 09:37:03,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351 conditions, 328 events. 17/328 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1232 event pairs, 0 based on Foata normal form. 0/246 useless extension candidates. Maximal degree in co-relation 264. Up to 10 conditions per place. [2023-08-29 09:37:03,600 INFO L82 GeneralOperation]: Start removeDead. Operand has 278 places, 282 transitions, 596 flow [2023-08-29 09:37:03,604 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 278 places, 282 transitions, 596 flow [2023-08-29 09:37:03,605 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 09:37:03,605 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 278 places, 282 transitions, 596 flow [2023-08-29 09:37:03,605 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 278 places, 282 transitions, 596 flow [2023-08-29 09:37:03,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 278 places, 282 transitions, 596 flow [2023-08-29 09:37:03,644 INFO L130 PetriNetUnfolder]: 17/328 cut-off events. [2023-08-29 09:37:03,644 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-29 09:37:03,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351 conditions, 328 events. 17/328 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1232 event pairs, 0 based on Foata normal form. 0/246 useless extension candidates. Maximal degree in co-relation 264. Up to 10 conditions per place. [2023-08-29 09:37:03,667 INFO L119 LiptonReduction]: Number of co-enabled transitions 54936 [2023-08-29 09:37:05,306 INFO L134 LiptonReduction]: Checked pairs total: 261294 [2023-08-29 09:37:05,307 INFO L136 LiptonReduction]: Total number of compositions: 161 [2023-08-29 09:37:05,308 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 09:37:05,308 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;@70095d58, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 09:37:05,309 INFO L358 AbstractCegarLoop]: Starting to check reachability of 76 error locations. [2023-08-29 09:37:05,310 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-29 09:37:05,310 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:37:05,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:37:05,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 09:37:05,310 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 72 more)] === [2023-08-29 09:37:05,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:37:05,311 INFO L85 PathProgramCache]: Analyzing trace with hash 55211762, now seen corresponding path program 1 times [2023-08-29 09:37:05,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:37:05,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806098113] [2023-08-29 09:37:05,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:37:05,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:37:05,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:37:05,331 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 09:37:05,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:37:05,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806098113] [2023-08-29 09:37:05,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806098113] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:37:05,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:37:05,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 09:37:05,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766002817] [2023-08-29 09:37:05,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:37:05,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 09:37:05,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:37:05,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 09:37:05,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 09:37:05,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 443 [2023-08-29 09:37:05,334 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 178 transitions, 388 flow. Second operand has 2 states, 2 states have (on average 214.0) internal successors, (428), 2 states have internal predecessors, (428), 0 states have call successors, (0), 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 09:37:05,334 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:37:05,335 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 443 [2023-08-29 09:37:05,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:37:31,655 INFO L130 PetriNetUnfolder]: 213697/344235 cut-off events. [2023-08-29 09:37:31,656 INFO L131 PetriNetUnfolder]: For 28545/28545 co-relation queries the response was YES. [2023-08-29 09:37:32,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 635042 conditions, 344235 events. 213697/344235 cut-off events. For 28545/28545 co-relation queries the response was YES. Maximal size of possible extension queue 9651. Compared 3634860 event pairs, 195051 based on Foata normal form. 51178/354589 useless extension candidates. Maximal degree in co-relation 41758. Up to 275608 conditions per place. [2023-08-29 09:37:34,468 INFO L137 encePairwiseOnDemand]: 404/443 looper letters, 58 selfloop transitions, 0 changer transitions 0/139 dead transitions. [2023-08-29 09:37:34,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 139 transitions, 426 flow [2023-08-29 09:37:34,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 09:37:34,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 09:37:34,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 521 transitions. [2023-08-29 09:37:34,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5880361173814899 [2023-08-29 09:37:34,470 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 521 transitions. [2023-08-29 09:37:34,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 521 transitions. [2023-08-29 09:37:34,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:37:34,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 521 transitions. [2023-08-29 09:37:34,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 260.5) internal successors, (521), 2 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 09:37:34,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 443.0) internal successors, (1329), 3 states have internal predecessors, (1329), 0 states have call successors, (0), 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 09:37:34,474 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 443.0) internal successors, (1329), 3 states have internal predecessors, (1329), 0 states have call successors, (0), 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 09:37:34,474 INFO L175 Difference]: Start difference. First operand has 181 places, 178 transitions, 388 flow. Second operand 2 states and 521 transitions. [2023-08-29 09:37:34,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 139 transitions, 426 flow [2023-08-29 09:37:34,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 139 transitions, 414 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-08-29 09:37:34,493 INFO L231 Difference]: Finished difference. Result has 145 places, 139 transitions, 298 flow [2023-08-29 09:37:34,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=443, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=298, PETRI_PLACES=145, PETRI_TRANSITIONS=139} [2023-08-29 09:37:34,494 INFO L281 CegarLoopForPetriNet]: 181 programPoint places, -36 predicate places. [2023-08-29 09:37:34,494 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 139 transitions, 298 flow [2023-08-29 09:37:34,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 214.0) internal successors, (428), 2 states have internal predecessors, (428), 0 states have call successors, (0), 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 09:37:34,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:37:34,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 09:37:34,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-29 09:37:34,495 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 72 more)] === [2023-08-29 09:37:34,495 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:37:34,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1518943988, now seen corresponding path program 1 times [2023-08-29 09:37:34,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:37:34,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254293326] [2023-08-29 09:37:34,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:37:34,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:37:34,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:37:34,520 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 09:37:34,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:37:34,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254293326] [2023-08-29 09:37:34,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254293326] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:37:34,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:37:34,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 09:37:34,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175155550] [2023-08-29 09:37:34,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:37:34,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 09:37:34,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:37:34,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 09:37:34,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 09:37:34,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 443 [2023-08-29 09:37:34,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 139 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 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 09:37:34,569 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:37:34,569 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 443 [2023-08-29 09:37:34,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand