./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/pthread-ext/11_fmaxsymopt.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/11_fmaxsymopt.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 963498115a8eca6e92c68ab7fa8168826446f05b9b398350c3ee0745adf1bb45 --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 09:28:35,166 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 09:28:35,168 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 09:28:35,205 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 09:28:35,207 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 09:28:35,210 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 09:28:35,211 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 09:28:35,214 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 09:28:35,215 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 09:28:35,219 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 09:28:35,220 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 09:28:35,222 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 09:28:35,222 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 09:28:35,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 09:28:35,225 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 09:28:35,230 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 09:28:35,231 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 09:28:35,232 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 09:28:35,236 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 09:28:35,237 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 09:28:35,241 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 09:28:35,246 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 09:28:35,247 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 09:28:35,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 09:28:35,249 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 09:28:35,253 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 09:28:35,253 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 09:28:35,254 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 09:28:35,255 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 09:28:35,256 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 09:28:35,256 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 09:28:35,259 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 09:28:35,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 09:28:35,261 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 09:28:35,261 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 09:28:35,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 09:28:35,263 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 09:28:35,263 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 09:28:35,263 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 09:28:35,263 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 09:28:35,264 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 09:28:35,265 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 09:28:35,289 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 09:28:35,289 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 09:28:35,290 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 09:28:35,291 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 09:28:35,291 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 09:28:35,291 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 09:28:35,292 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 09:28:35,292 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 09:28:35,292 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 09:28:35,292 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 09:28:35,293 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 09:28:35,293 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 09:28:35,293 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 09:28:35,294 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 09:28:35,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 09:28:35,294 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 09:28:35,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 09:28:35,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 09:28:35,294 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 09:28:35,294 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 09:28:35,295 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 09:28:35,295 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 09:28:35,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 09:28:35,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 09:28:35,295 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 09:28:35,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 09:28:35,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 09:28:35,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 09:28:35,296 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 09:28:35,296 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 09:28:35,296 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 09:28:35,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 09:28:35,297 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 09:28:35,297 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 09:28:35,297 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 09:28:35,297 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 09:28:35,297 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 09:28:35,297 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 963498115a8eca6e92c68ab7fa8168826446f05b9b398350c3ee0745adf1bb45 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-29 09:28:35,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 09:28:35,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 09:28:35,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 09:28:35,544 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 09:28:35,544 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 09:28:35,545 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/11_fmaxsymopt.i [2023-08-29 09:28:36,560 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 09:28:36,788 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 09:28:36,788 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/11_fmaxsymopt.i [2023-08-29 09:28:36,797 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/247383390/dcfa92e00d1d4aa7a0d6399578d5b126/FLAG03214b8c2 [2023-08-29 09:28:36,807 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/247383390/dcfa92e00d1d4aa7a0d6399578d5b126 [2023-08-29 09:28:36,809 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 09:28:36,810 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 09:28:36,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 09:28:36,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 09:28:36,813 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 09:28:36,814 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:28:36" (1/1) ... [2023-08-29 09:28:36,815 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44a120f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:28:36, skipping insertion in model container [2023-08-29 09:28:36,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:28:36" (1/1) ... [2023-08-29 09:28:36,819 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 09:28:36,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 09:28:37,022 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/11_fmaxsymopt.i[30540,30553] [2023-08-29 09:28:37,031 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 09:28:37,040 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 09:28:37,090 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/11_fmaxsymopt.i[30540,30553] [2023-08-29 09:28:37,094 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 09:28:37,128 INFO L208 MainTranslator]: Completed translation [2023-08-29 09:28:37,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:28:37 WrapperNode [2023-08-29 09:28:37,129 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 09:28:37,130 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 09:28:37,130 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 09:28:37,130 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 09:28:37,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:28:37" (1/1) ... [2023-08-29 09:28:37,157 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:28:37" (1/1) ... [2023-08-29 09:28:37,187 INFO L138 Inliner]: procedures = 171, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 108 [2023-08-29 09:28:37,188 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 09:28:37,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 09:28:37,189 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 09:28:37,189 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 09:28:37,195 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:28:37" (1/1) ... [2023-08-29 09:28:37,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:28:37" (1/1) ... [2023-08-29 09:28:37,202 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:28:37" (1/1) ... [2023-08-29 09:28:37,203 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:28:37" (1/1) ... [2023-08-29 09:28:37,215 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:28:37" (1/1) ... [2023-08-29 09:28:37,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:28:37" (1/1) ... [2023-08-29 09:28:37,223 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:28:37" (1/1) ... [2023-08-29 09:28:37,224 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:28:37" (1/1) ... [2023-08-29 09:28:37,228 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 09:28:37,230 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 09:28:37,230 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 09:28:37,230 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 09:28:37,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:28:37" (1/1) ... [2023-08-29 09:28:37,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 09:28:37,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 09:28:37,258 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 09:28:37,278 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 09:28:37,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 09:28:37,313 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-29 09:28:37,314 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-29 09:28:37,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 09:28:37,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 09:28:37,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 09:28:37,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 09:28:37,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 09:28:37,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 09:28:37,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 09:28:37,316 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 09:28:37,430 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 09:28:37,431 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 09:28:37,585 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 09:28:37,643 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 09:28:37,646 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-29 09:28:37,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:28:37 BoogieIcfgContainer [2023-08-29 09:28:37,654 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 09:28:37,656 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 09:28:37,657 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 09:28:37,659 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 09:28:37,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 09:28:36" (1/3) ... [2023-08-29 09:28:37,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2081de12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:28:37, skipping insertion in model container [2023-08-29 09:28:37,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:28:37" (2/3) ... [2023-08-29 09:28:37,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2081de12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:28:37, skipping insertion in model container [2023-08-29 09:28:37,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:28:37" (3/3) ... [2023-08-29 09:28:37,661 INFO L112 eAbstractionObserver]: Analyzing ICFG 11_fmaxsymopt.i [2023-08-29 09:28:37,666 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 09:28:37,672 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 09:28:37,672 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-29 09:28:37,672 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 09:28:37,737 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 09:28:37,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 98 transitions, 201 flow [2023-08-29 09:28:37,813 INFO L130 PetriNetUnfolder]: 9/108 cut-off events. [2023-08-29 09:28:37,820 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:28:37,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 108 events. 9/108 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 147 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 76. Up to 4 conditions per place. [2023-08-29 09:28:37,825 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 98 transitions, 201 flow [2023-08-29 09:28:37,828 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 98 transitions, 201 flow [2023-08-29 09:28:37,835 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 09:28:37,848 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 98 transitions, 201 flow [2023-08-29 09:28:37,850 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 98 transitions, 201 flow [2023-08-29 09:28:37,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 98 transitions, 201 flow [2023-08-29 09:28:37,891 INFO L130 PetriNetUnfolder]: 9/108 cut-off events. [2023-08-29 09:28:37,895 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:28:37,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 108 events. 9/108 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 147 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 76. Up to 4 conditions per place. [2023-08-29 09:28:37,899 INFO L119 LiptonReduction]: Number of co-enabled transitions 1664 [2023-08-29 09:28:40,167 INFO L134 LiptonReduction]: Checked pairs total: 1488 [2023-08-29 09:28:40,167 INFO L136 LiptonReduction]: Total number of compositions: 108 [2023-08-29 09:28:40,186 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 09:28:40,192 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;@7b752c85, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 09:28:40,192 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-29 09:28:40,194 INFO L130 PetriNetUnfolder]: 1/9 cut-off events. [2023-08-29 09:28:40,195 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:28:40,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:28:40,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 09:28:40,195 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2023-08-29 09:28:40,198 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:28:40,209 INFO L85 PathProgramCache]: Analyzing trace with hash 479707986, now seen corresponding path program 1 times [2023-08-29 09:28:40,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:28:40,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91645842] [2023-08-29 09:28:40,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:28:40,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:28:40,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:28:40,364 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 09:28:40,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:28:40,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91645842] [2023-08-29 09:28:40,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91645842] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:28:40,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:28:40,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 09:28:40,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868716061] [2023-08-29 09:28:40,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:28:40,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 09:28:40,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:28:40,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 09:28:40,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 09:28:40,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 206 [2023-08-29 09:28:40,399 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 17 transitions, 39 flow. Second operand has 2 states, 2 states have (on average 87.5) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states 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 09:28:40,399 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:28:40,399 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 206 [2023-08-29 09:28:40,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:28:40,414 INFO L130 PetriNetUnfolder]: 7/19 cut-off events. [2023-08-29 09:28:40,415 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:28:40,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 19 events. 7/19 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 23 event pairs, 4 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 30. Up to 19 conditions per place. [2023-08-29 09:28:40,416 INFO L137 encePairwiseOnDemand]: 197/206 looper letters, 7 selfloop transitions, 0 changer transitions 0/8 dead transitions. [2023-08-29 09:28:40,416 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 8 transitions, 35 flow [2023-08-29 09:28:40,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 09:28:40,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 09:28:40,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 186 transitions. [2023-08-29 09:28:40,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45145631067961167 [2023-08-29 09:28:40,425 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 186 transitions. [2023-08-29 09:28:40,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 186 transitions. [2023-08-29 09:28:40,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:28:40,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 186 transitions. [2023-08-29 09:28:40,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 93.0) internal successors, (186), 2 states have internal predecessors, (186), 0 states have call successors, (0), 0 states 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 09:28:40,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states 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 09:28:40,433 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states 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 09:28:40,434 INFO L175 Difference]: Start difference. First operand has 19 places, 17 transitions, 39 flow. Second operand 2 states and 186 transitions. [2023-08-29 09:28:40,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 8 transitions, 35 flow [2023-08-29 09:28:40,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 8 transitions, 35 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 09:28:40,437 INFO L231 Difference]: Finished difference. Result has 11 places, 8 transitions, 21 flow [2023-08-29 09:28:40,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=21, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=21, PETRI_PLACES=11, PETRI_TRANSITIONS=8} [2023-08-29 09:28:40,441 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, -8 predicate places. [2023-08-29 09:28:40,441 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 8 transitions, 21 flow [2023-08-29 09:28:40,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 87.5) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states 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 09:28:40,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:28:40,441 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-29 09:28:40,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 09:28:40,442 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2023-08-29 09:28:40,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:28:40,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1985969043, now seen corresponding path program 1 times [2023-08-29 09:28:40,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:28:40,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072335132] [2023-08-29 09:28:40,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:28:40,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:28:40,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:28:40,459 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 09:28:40,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:28:40,479 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 09:28:40,480 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 09:28:40,481 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-08-29 09:28:40,483 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2023-08-29 09:28:40,483 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2023-08-29 09:28:40,483 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2023-08-29 09:28:40,483 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2023-08-29 09:28:40,483 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2023-08-29 09:28:40,484 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2023-08-29 09:28:40,484 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2023-08-29 09:28:40,484 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2023-08-29 09:28:40,484 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2023-08-29 09:28:40,484 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2023-08-29 09:28:40,485 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2023-08-29 09:28:40,485 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2023-08-29 09:28:40,485 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2023-08-29 09:28:40,485 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2023-08-29 09:28:40,485 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2023-08-29 09:28:40,485 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2023-08-29 09:28:40,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 09:28:40,486 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-29 09:28:40,488 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 09:28:40,488 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-29 09:28:40,508 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 09:28:40,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 163 transitions, 338 flow [2023-08-29 09:28:40,530 INFO L130 PetriNetUnfolder]: 17/185 cut-off events. [2023-08-29 09:28:40,530 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 09:28:40,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 185 events. 17/185 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 445 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 140. Up to 6 conditions per place. [2023-08-29 09:28:40,532 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 163 transitions, 338 flow [2023-08-29 09:28:40,533 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 153 places, 163 transitions, 338 flow [2023-08-29 09:28:40,534 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 09:28:40,534 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 153 places, 163 transitions, 338 flow [2023-08-29 09:28:40,534 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 153 places, 163 transitions, 338 flow [2023-08-29 09:28:40,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 163 transitions, 338 flow [2023-08-29 09:28:40,551 INFO L130 PetriNetUnfolder]: 17/185 cut-off events. [2023-08-29 09:28:40,551 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 09:28:40,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 185 events. 17/185 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 445 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 140. Up to 6 conditions per place. [2023-08-29 09:28:40,557 INFO L119 LiptonReduction]: Number of co-enabled transitions 11648 [2023-08-29 09:28:42,707 INFO L134 LiptonReduction]: Checked pairs total: 34647 [2023-08-29 09:28:42,707 INFO L136 LiptonReduction]: Total number of compositions: 133 [2023-08-29 09:28:42,709 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 09:28:42,709 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;@7b752c85, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 09:28:42,710 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-08-29 09:28:42,711 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2023-08-29 09:28:42,711 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:28:42,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:28:42,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 09:28:42,712 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-29 09:28:42,712 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:28:42,712 INFO L85 PathProgramCache]: Analyzing trace with hash 823829572, now seen corresponding path program 1 times [2023-08-29 09:28:42,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:28:42,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385545052] [2023-08-29 09:28:42,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:28:42,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:28:42,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:28:42,770 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 09:28:42,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:28:42,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385545052] [2023-08-29 09:28:42,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385545052] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:28:42,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:28:42,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 09:28:42,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076236069] [2023-08-29 09:28:42,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:28:42,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 09:28:42,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:28:42,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 09:28:42,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 09:28:42,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 296 [2023-08-29 09:28:42,773 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 66 transitions, 144 flow. Second operand has 2 states, 2 states have (on average 141.5) internal successors, (283), 2 states have internal predecessors, (283), 0 states have call successors, (0), 0 states 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 09:28:42,773 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:28:42,773 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 296 [2023-08-29 09:28:42,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:28:42,857 INFO L130 PetriNetUnfolder]: 218/611 cut-off events. [2023-08-29 09:28:42,872 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2023-08-29 09:28:42,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1000 conditions, 611 events. 218/611 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3911 event pairs, 152 based on Foata normal form. 60/558 useless extension candidates. Maximal degree in co-relation 191. Up to 349 conditions per place. [2023-08-29 09:28:42,876 INFO L137 encePairwiseOnDemand]: 283/296 looper letters, 20 selfloop transitions, 0 changer transitions 0/53 dead transitions. [2023-08-29 09:28:42,876 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 53 transitions, 158 flow [2023-08-29 09:28:42,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 09:28:42,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 09:28:42,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 311 transitions. [2023-08-29 09:28:42,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5253378378378378 [2023-08-29 09:28:42,878 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 311 transitions. [2023-08-29 09:28:42,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 311 transitions. [2023-08-29 09:28:42,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:28:42,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 311 transitions. [2023-08-29 09:28:42,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 155.5) internal successors, (311), 2 states have internal predecessors, (311), 0 states have call successors, (0), 0 states 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 09:28:42,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 296.0) internal successors, (888), 3 states have internal predecessors, (888), 0 states have call successors, (0), 0 states 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 09:28:42,881 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 296.0) internal successors, (888), 3 states have internal predecessors, (888), 0 states have call successors, (0), 0 states 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 09:28:42,882 INFO L175 Difference]: Start difference. First operand has 63 places, 66 transitions, 144 flow. Second operand 2 states and 311 transitions. [2023-08-29 09:28:42,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 53 transitions, 158 flow [2023-08-29 09:28:42,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 53 transitions, 156 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-29 09:28:42,883 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 116 flow [2023-08-29 09:28:42,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=116, PETRI_PLACES=55, PETRI_TRANSITIONS=53} [2023-08-29 09:28:42,884 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -8 predicate places. [2023-08-29 09:28:42,884 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 116 flow [2023-08-29 09:28:42,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 141.5) internal successors, (283), 2 states have internal predecessors, (283), 0 states have call successors, (0), 0 states 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 09:28:42,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:28:42,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 09:28:42,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 09:28:42,885 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-29 09:28:42,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:28:42,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1426259464, now seen corresponding path program 1 times [2023-08-29 09:28:42,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:28:42,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393968476] [2023-08-29 09:28:42,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:28:42,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:28:42,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:28:42,962 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 09:28:42,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:28:42,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393968476] [2023-08-29 09:28:42,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393968476] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:28:42,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:28:42,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 09:28:42,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026010502] [2023-08-29 09:28:42,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:28:42,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 09:28:42,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:28:42,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 09:28:42,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 09:28:42,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 296 [2023-08-29 09:28:42,984 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 53 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states 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 09:28:42,984 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:28:42,986 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 296 [2023-08-29 09:28:42,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:28:43,071 INFO L130 PetriNetUnfolder]: 267/789 cut-off events. [2023-08-29 09:28:43,072 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2023-08-29 09:28:43,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1256 conditions, 789 events. 267/789 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 5235 event pairs, 127 based on Foata normal form. 0/660 useless extension candidates. Maximal degree in co-relation 1251. Up to 342 conditions per place. [2023-08-29 09:28:43,075 INFO L137 encePairwiseOnDemand]: 293/296 looper letters, 30 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-08-29 09:28:43,075 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 65 transitions, 209 flow [2023-08-29 09:28:43,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 09:28:43,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 09:28:43,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 432 transitions. [2023-08-29 09:28:43,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2023-08-29 09:28:43,077 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 432 transitions. [2023-08-29 09:28:43,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 432 transitions. [2023-08-29 09:28:43,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:28:43,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 432 transitions. [2023-08-29 09:28:43,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states 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 09:28:43,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states 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 09:28:43,081 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states 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 09:28:43,081 INFO L175 Difference]: Start difference. First operand has 55 places, 53 transitions, 116 flow. Second operand 3 states and 432 transitions. [2023-08-29 09:28:43,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 65 transitions, 209 flow [2023-08-29 09:28:43,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 65 transitions, 209 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 09:28:43,082 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 128 flow [2023-08-29 09:28:43,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2023-08-29 09:28:43,083 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -5 predicate places. [2023-08-29 09:28:43,083 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 128 flow [2023-08-29 09:28:43,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states 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 09:28:43,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:28:43,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 09:28:43,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 09:28:43,084 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-29 09:28:43,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:28:43,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1503962943, now seen corresponding path program 1 times [2023-08-29 09:28:43,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:28:43,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809198165] [2023-08-29 09:28:43,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:28:43,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:28:43,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:28:43,398 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 09:28:43,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:28:43,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809198165] [2023-08-29 09:28:43,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809198165] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:28:43,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:28:43,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 09:28:43,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850493205] [2023-08-29 09:28:43,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:28:43,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 09:28:43,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:28:43,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 09:28:43,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 09:28:43,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 296 [2023-08-29 09:28:43,567 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 128 flow. Second operand has 6 states, 6 states have (on average 129.66666666666666) internal successors, (778), 6 states have internal predecessors, (778), 0 states have call successors, (0), 0 states 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 09:28:43,567 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:28:43,567 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 296 [2023-08-29 09:28:43,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:28:43,723 INFO L130 PetriNetUnfolder]: 481/1108 cut-off events. [2023-08-29 09:28:43,724 INFO L131 PetriNetUnfolder]: For 109/109 co-relation queries the response was YES. [2023-08-29 09:28:43,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2040 conditions, 1108 events. 481/1108 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 7212 event pairs, 185 based on Foata normal form. 36/1011 useless extension candidates. Maximal degree in co-relation 2033. Up to 418 conditions per place. [2023-08-29 09:28:43,728 INFO L137 encePairwiseOnDemand]: 290/296 looper letters, 59 selfloop transitions, 6 changer transitions 0/93 dead transitions. [2023-08-29 09:28:43,728 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 93 transitions, 356 flow [2023-08-29 09:28:43,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 09:28:43,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 09:28:43,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 833 transitions. [2023-08-29 09:28:43,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46903153153153154 [2023-08-29 09:28:43,730 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 833 transitions. [2023-08-29 09:28:43,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 833 transitions. [2023-08-29 09:28:43,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:28:43,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 833 transitions. [2023-08-29 09:28:43,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 138.83333333333334) internal successors, (833), 6 states have internal predecessors, (833), 0 states have call successors, (0), 0 states 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 09:28:43,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 296.0) internal successors, (2072), 7 states have internal predecessors, (2072), 0 states have call successors, (0), 0 states 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 09:28:43,736 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 296.0) internal successors, (2072), 7 states have internal predecessors, (2072), 0 states have call successors, (0), 0 states 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 09:28:43,736 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 128 flow. Second operand 6 states and 833 transitions. [2023-08-29 09:28:43,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 93 transitions, 356 flow [2023-08-29 09:28:43,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 93 transitions, 354 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 09:28:43,738 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 136 flow [2023-08-29 09:28:43,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=136, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2023-08-29 09:28:43,738 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -2 predicate places. [2023-08-29 09:28:43,739 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 136 flow [2023-08-29 09:28:43,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 129.66666666666666) internal successors, (778), 6 states have internal predecessors, (778), 0 states have call successors, (0), 0 states 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 09:28:43,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:28:43,739 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-29 09:28:43,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 09:28:43,740 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-29 09:28:43,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:28:43,740 INFO L85 PathProgramCache]: Analyzing trace with hash -517469385, now seen corresponding path program 1 times [2023-08-29 09:28:43,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:28:43,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878179588] [2023-08-29 09:28:43,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:28:43,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:28:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:28:43,748 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 09:28:43,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:28:43,755 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 09:28:43,755 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 09:28:43,755 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2023-08-29 09:28:43,755 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2023-08-29 09:28:43,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2023-08-29 09:28:43,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2023-08-29 09:28:43,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2023-08-29 09:28:43,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2023-08-29 09:28:43,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2023-08-29 09:28:43,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2023-08-29 09:28:43,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2023-08-29 09:28:43,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2023-08-29 09:28:43,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2023-08-29 09:28:43,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2023-08-29 09:28:43,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2023-08-29 09:28:43,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2023-08-29 09:28:43,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2023-08-29 09:28:43,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2023-08-29 09:28:43,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2023-08-29 09:28:43,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2023-08-29 09:28:43,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2023-08-29 09:28:43,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2023-08-29 09:28:43,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2023-08-29 09:28:43,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2023-08-29 09:28:43,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2023-08-29 09:28:43,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2023-08-29 09:28:43,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2023-08-29 09:28:43,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 09:28:43,759 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-29 09:28:43,760 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 09:28:43,760 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-29 09:28:43,780 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 09:28:43,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 228 transitions, 477 flow [2023-08-29 09:28:43,800 INFO L130 PetriNetUnfolder]: 25/262 cut-off events. [2023-08-29 09:28:43,800 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-29 09:28:43,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 262 events. 25/262 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 816 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 204. Up to 8 conditions per place. [2023-08-29 09:28:43,802 INFO L82 GeneralOperation]: Start removeDead. Operand has 213 places, 228 transitions, 477 flow [2023-08-29 09:28:43,804 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 213 places, 228 transitions, 477 flow [2023-08-29 09:28:43,804 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 09:28:43,804 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 213 places, 228 transitions, 477 flow [2023-08-29 09:28:43,805 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 213 places, 228 transitions, 477 flow [2023-08-29 09:28:43,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 228 transitions, 477 flow [2023-08-29 09:28:43,843 INFO L130 PetriNetUnfolder]: 25/262 cut-off events. [2023-08-29 09:28:43,843 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-29 09:28:43,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 262 events. 25/262 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 816 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 204. Up to 8 conditions per place. [2023-08-29 09:28:43,853 INFO L119 LiptonReduction]: Number of co-enabled transitions 29952 [2023-08-29 09:28:46,593 INFO L134 LiptonReduction]: Checked pairs total: 94072 [2023-08-29 09:28:46,593 INFO L136 LiptonReduction]: Total number of compositions: 183 [2023-08-29 09:28:46,594 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 09:28:46,595 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;@7b752c85, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 09:28:46,595 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2023-08-29 09:28:46,596 INFO L130 PetriNetUnfolder]: 0/9 cut-off events. [2023-08-29 09:28:46,596 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:28:46,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:28:46,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 09:28:46,596 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-08-29 09:28:46,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:28:46,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1277523340, now seen corresponding path program 1 times [2023-08-29 09:28:46,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:28:46,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999339694] [2023-08-29 09:28:46,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:28:46,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:28:46,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:28:46,605 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 09:28:46,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:28:46,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999339694] [2023-08-29 09:28:46,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999339694] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:28:46,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:28:46,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 09:28:46,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176451321] [2023-08-29 09:28:46,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:28:46,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 09:28:46,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:28:46,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 09:28:46,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 09:28:46,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 411 [2023-08-29 09:28:46,606 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 96 transitions, 213 flow. Second operand has 2 states, 2 states have (on average 195.5) internal successors, (391), 2 states have internal predecessors, (391), 0 states have call successors, (0), 0 states 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 09:28:46,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:28:46,607 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 411 [2023-08-29 09:28:46,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:28:46,994 INFO L130 PetriNetUnfolder]: 2909/6034 cut-off events. [2023-08-29 09:28:46,995 INFO L131 PetriNetUnfolder]: For 487/487 co-relation queries the response was YES. [2023-08-29 09:28:47,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10388 conditions, 6034 events. 2909/6034 cut-off events. For 487/487 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 51275 event pairs, 2119 based on Foata normal form. 738/5774 useless extension candidates. Maximal degree in co-relation 1011. Up to 3952 conditions per place. [2023-08-29 09:28:47,044 INFO L137 encePairwiseOnDemand]: 392/411 looper letters, 29 selfloop transitions, 0 changer transitions 0/77 dead transitions. [2023-08-29 09:28:47,045 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 77 transitions, 233 flow [2023-08-29 09:28:47,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 09:28:47,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 09:28:47,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 434 transitions. [2023-08-29 09:28:47,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5279805352798054 [2023-08-29 09:28:47,046 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 434 transitions. [2023-08-29 09:28:47,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 434 transitions. [2023-08-29 09:28:47,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:28:47,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 434 transitions. [2023-08-29 09:28:47,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 217.0) internal successors, (434), 2 states have internal predecessors, (434), 0 states have call successors, (0), 0 states 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 09:28:47,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 411.0) internal successors, (1233), 3 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states 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 09:28:47,050 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 411.0) internal successors, (1233), 3 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states 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 09:28:47,050 INFO L175 Difference]: Start difference. First operand has 91 places, 96 transitions, 213 flow. Second operand 2 states and 434 transitions. [2023-08-29 09:28:47,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 77 transitions, 233 flow [2023-08-29 09:28:47,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 77 transitions, 227 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-29 09:28:47,055 INFO L231 Difference]: Finished difference. Result has 79 places, 77 transitions, 169 flow [2023-08-29 09:28:47,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=169, PETRI_PLACES=79, PETRI_TRANSITIONS=77} [2023-08-29 09:28:47,057 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, -12 predicate places. [2023-08-29 09:28:47,057 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 77 transitions, 169 flow [2023-08-29 09:28:47,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 195.5) internal successors, (391), 2 states have internal predecessors, (391), 0 states have call successors, (0), 0 states 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 09:28:47,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:28:47,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 09:28:47,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 09:28:47,058 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-08-29 09:28:47,059 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:28:47,059 INFO L85 PathProgramCache]: Analyzing trace with hash -660683089, now seen corresponding path program 1 times [2023-08-29 09:28:47,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:28:47,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552073274] [2023-08-29 09:28:47,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:28:47,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:28:47,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:28:47,087 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 09:28:47,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:28:47,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552073274] [2023-08-29 09:28:47,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552073274] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:28:47,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:28:47,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 09:28:47,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198406403] [2023-08-29 09:28:47,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:28:47,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 09:28:47,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:28:47,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 09:28:47,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 09:28:47,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 411 [2023-08-29 09:28:47,104 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 77 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states 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 09:28:47,104 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:28:47,104 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 411 [2023-08-29 09:28:47,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:28:47,618 INFO L130 PetriNetUnfolder]: 3603/7335 cut-off events. [2023-08-29 09:28:47,619 INFO L131 PetriNetUnfolder]: For 237/237 co-relation queries the response was YES. [2023-08-29 09:28:47,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12514 conditions, 7335 events. 3603/7335 cut-off events. For 237/237 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 61370 event pairs, 1739 based on Foata normal form. 0/6033 useless extension candidates. Maximal degree in co-relation 12508. Up to 3864 conditions per place. [2023-08-29 09:28:47,650 INFO L137 encePairwiseOnDemand]: 408/411 looper letters, 48 selfloop transitions, 2 changer transitions 0/98 dead transitions. [2023-08-29 09:28:47,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 98 transitions, 321 flow [2023-08-29 09:28:47,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 09:28:47,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 09:28:47,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 612 transitions. [2023-08-29 09:28:47,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49635036496350365 [2023-08-29 09:28:47,652 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 612 transitions. [2023-08-29 09:28:47,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 612 transitions. [2023-08-29 09:28:47,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:28:47,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 612 transitions. [2023-08-29 09:28:47,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states 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 09:28:47,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 411.0) internal successors, (1644), 4 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states 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 09:28:47,678 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 411.0) internal successors, (1644), 4 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states 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 09:28:47,679 INFO L175 Difference]: Start difference. First operand has 79 places, 77 transitions, 169 flow. Second operand 3 states and 612 transitions. [2023-08-29 09:28:47,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 98 transitions, 321 flow [2023-08-29 09:28:47,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 98 transitions, 321 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 09:28:47,681 INFO L231 Difference]: Finished difference. Result has 82 places, 78 transitions, 181 flow [2023-08-29 09:28:47,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=181, PETRI_PLACES=82, PETRI_TRANSITIONS=78} [2023-08-29 09:28:47,682 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, -9 predicate places. [2023-08-29 09:28:47,683 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 78 transitions, 181 flow [2023-08-29 09:28:47,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states 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 09:28:47,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:28:47,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 09:28:47,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 09:28:47,683 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-08-29 09:28:47,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:28:47,684 INFO L85 PathProgramCache]: Analyzing trace with hash -406981923, now seen corresponding path program 1 times [2023-08-29 09:28:47,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:28:47,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511500066] [2023-08-29 09:28:47,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:28:47,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:28:47,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:28:47,833 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 09:28:47,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:28:47,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511500066] [2023-08-29 09:28:47,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511500066] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:28:47,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:28:47,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 09:28:47,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795882755] [2023-08-29 09:28:47,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:28:47,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 09:28:47,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:28:47,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 09:28:47,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 09:28:47,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 411 [2023-08-29 09:28:47,980 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 78 transitions, 181 flow. Second operand has 6 states, 6 states have (on average 183.66666666666666) internal successors, (1102), 6 states have internal predecessors, (1102), 0 states have call successors, (0), 0 states 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 09:28:47,980 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:28:47,980 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 411 [2023-08-29 09:28:47,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:28:48,765 INFO L130 PetriNetUnfolder]: 6693/11614 cut-off events. [2023-08-29 09:28:48,766 INFO L131 PetriNetUnfolder]: For 951/951 co-relation queries the response was YES. [2023-08-29 09:28:48,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21961 conditions, 11614 events. 6693/11614 cut-off events. For 951/951 co-relation queries the response was YES. Maximal size of possible extension queue 582. Compared 92070 event pairs, 2655 based on Foata normal form. 292/10361 useless extension candidates. Maximal degree in co-relation 21953. Up to 4918 conditions per place. [2023-08-29 09:28:48,812 INFO L137 encePairwiseOnDemand]: 405/411 looper letters, 104 selfloop transitions, 6 changer transitions 0/153 dead transitions. [2023-08-29 09:28:48,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 153 transitions, 591 flow [2023-08-29 09:28:48,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 09:28:48,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 09:28:48,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1202 transitions. [2023-08-29 09:28:48,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48742903487429035 [2023-08-29 09:28:48,815 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1202 transitions. [2023-08-29 09:28:48,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1202 transitions. [2023-08-29 09:28:48,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:28:48,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1202 transitions. [2023-08-29 09:28:48,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 200.33333333333334) internal successors, (1202), 6 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states 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 09:28:48,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 411.0) internal successors, (2877), 7 states have internal predecessors, (2877), 0 states have call successors, (0), 0 states 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 09:28:48,820 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 411.0) internal successors, (2877), 7 states have internal predecessors, (2877), 0 states have call successors, (0), 0 states 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 09:28:48,820 INFO L175 Difference]: Start difference. First operand has 82 places, 78 transitions, 181 flow. Second operand 6 states and 1202 transitions. [2023-08-29 09:28:48,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 153 transitions, 591 flow [2023-08-29 09:28:48,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 153 transitions, 589 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 09:28:48,824 INFO L231 Difference]: Finished difference. Result has 85 places, 77 transitions, 189 flow [2023-08-29 09:28:48,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=189, PETRI_PLACES=85, PETRI_TRANSITIONS=77} [2023-08-29 09:28:48,825 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, -6 predicate places. [2023-08-29 09:28:48,825 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 77 transitions, 189 flow [2023-08-29 09:28:48,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 183.66666666666666) internal successors, (1102), 6 states have internal predecessors, (1102), 0 states have call successors, (0), 0 states 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 09:28:48,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:28:48,826 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 09:28:48,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 09:28:48,826 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-08-29 09:28:48,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:28:48,827 INFO L85 PathProgramCache]: Analyzing trace with hash 486186153, now seen corresponding path program 1 times [2023-08-29 09:28:48,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:28:48,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438650558] [2023-08-29 09:28:48,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:28:48,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:28:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:28:48,849 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 09:28:48,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:28:48,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438650558] [2023-08-29 09:28:48,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438650558] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:28:48,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:28:48,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 09:28:48,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011445731] [2023-08-29 09:28:48,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:28:48,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 09:28:48,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:28:48,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 09:28:48,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 09:28:48,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 411 [2023-08-29 09:28:48,867 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 77 transitions, 189 flow. Second operand has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states 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 09:28:48,867 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:28:48,868 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 411 [2023-08-29 09:28:48,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:28:49,669 INFO L130 PetriNetUnfolder]: 4462/9742 cut-off events. [2023-08-29 09:28:49,669 INFO L131 PetriNetUnfolder]: For 1551/1551 co-relation queries the response was YES. [2023-08-29 09:28:49,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17138 conditions, 9742 events. 4462/9742 cut-off events. For 1551/1551 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 88577 event pairs, 2594 based on Foata normal form. 0/8243 useless extension candidates. Maximal degree in co-relation 17130. Up to 4801 conditions per place. [2023-08-29 09:28:49,703 INFO L137 encePairwiseOnDemand]: 408/411 looper letters, 49 selfloop transitions, 2 changer transitions 0/98 dead transitions. [2023-08-29 09:28:49,703 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 98 transitions, 350 flow [2023-08-29 09:28:49,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 09:28:49,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 09:28:49,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 611 transitions. [2023-08-29 09:28:49,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4955393349553934 [2023-08-29 09:28:49,705 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 611 transitions. [2023-08-29 09:28:49,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 611 transitions. [2023-08-29 09:28:49,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:28:49,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 611 transitions. [2023-08-29 09:28:49,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 0 states have call successors, (0), 0 states 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 09:28:49,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 411.0) internal successors, (1644), 4 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states 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 09:28:49,709 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 411.0) internal successors, (1644), 4 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states 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 09:28:49,709 INFO L175 Difference]: Start difference. First operand has 85 places, 77 transitions, 189 flow. Second operand 3 states and 611 transitions. [2023-08-29 09:28:49,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 98 transitions, 350 flow [2023-08-29 09:28:49,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 98 transitions, 334 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-29 09:28:49,711 INFO L231 Difference]: Finished difference. Result has 83 places, 78 transitions, 189 flow [2023-08-29 09:28:49,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=189, PETRI_PLACES=83, PETRI_TRANSITIONS=78} [2023-08-29 09:28:49,713 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, -8 predicate places. [2023-08-29 09:28:49,713 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 78 transitions, 189 flow [2023-08-29 09:28:49,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states 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 09:28:49,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:28:49,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 09:28:49,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 09:28:49,714 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-08-29 09:28:49,714 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:28:49,714 INFO L85 PathProgramCache]: Analyzing trace with hash 303308416, now seen corresponding path program 1 times [2023-08-29 09:28:49,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:28:49,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927697789] [2023-08-29 09:28:49,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:28:49,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:28:49,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:28:49,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 09:28:49,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:28:49,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927697789] [2023-08-29 09:28:49,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927697789] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:28:49,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:28:49,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 09:28:49,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756342361] [2023-08-29 09:28:49,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:28:49,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 09:28:49,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:28:49,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 09:28:49,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 09:28:49,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 411 [2023-08-29 09:28:49,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 78 transitions, 189 flow. Second operand has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states 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 09:28:49,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:28:49,764 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 411 [2023-08-29 09:28:49,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:28:51,997 INFO L130 PetriNetUnfolder]: 25179/38524 cut-off events. [2023-08-29 09:28:51,997 INFO L131 PetriNetUnfolder]: For 6134/6134 co-relation queries the response was YES. [2023-08-29 09:28:52,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79550 conditions, 38524 events. 25179/38524 cut-off events. For 6134/6134 co-relation queries the response was YES. Maximal size of possible extension queue 1393. Compared 293808 event pairs, 9295 based on Foata normal form. 0/35857 useless extension candidates. Maximal degree in co-relation 79541. Up to 21654 conditions per place. [2023-08-29 09:28:52,153 INFO L137 encePairwiseOnDemand]: 390/411 looper letters, 79 selfloop transitions, 15 changer transitions 0/121 dead transitions. [2023-08-29 09:28:52,154 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 121 transitions, 491 flow [2023-08-29 09:28:52,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 09:28:52,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 09:28:52,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 612 transitions. [2023-08-29 09:28:52,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49635036496350365 [2023-08-29 09:28:52,155 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 612 transitions. [2023-08-29 09:28:52,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 612 transitions. [2023-08-29 09:28:52,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:28:52,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 612 transitions. [2023-08-29 09:28:52,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states 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 09:28:52,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 411.0) internal successors, (1644), 4 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states 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 09:28:52,159 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 411.0) internal successors, (1644), 4 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states 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 09:28:52,159 INFO L175 Difference]: Start difference. First operand has 83 places, 78 transitions, 189 flow. Second operand 3 states and 612 transitions. [2023-08-29 09:28:52,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 121 transitions, 491 flow [2023-08-29 09:28:52,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 121 transitions, 487 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 09:28:52,163 INFO L231 Difference]: Finished difference. Result has 86 places, 93 transitions, 319 flow [2023-08-29 09:28:52,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=319, PETRI_PLACES=86, PETRI_TRANSITIONS=93} [2023-08-29 09:28:52,164 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, -5 predicate places. [2023-08-29 09:28:52,164 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 93 transitions, 319 flow [2023-08-29 09:28:52,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states 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 09:28:52,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:28:52,164 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 09:28:52,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-29 09:28:52,164 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-08-29 09:28:52,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:28:52,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1492189914, now seen corresponding path program 1 times [2023-08-29 09:28:52,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:28:52,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261417804] [2023-08-29 09:28:52,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:28:52,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:28:52,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:28:52,323 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 09:28:52,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:28:52,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261417804] [2023-08-29 09:28:52,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261417804] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:28:52,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:28:52,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 09:28:52,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634908728] [2023-08-29 09:28:52,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:28:52,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 09:28:52,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:28:52,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 09:28:52,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 09:28:52,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 411 [2023-08-29 09:28:52,469 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 93 transitions, 319 flow. Second operand has 6 states, 6 states have (on average 183.83333333333334) internal successors, (1103), 6 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states 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 09:28:52,469 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:28:52,469 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 411 [2023-08-29 09:28:52,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:28:54,371 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1211] L719-1-->thr1EXIT: Formula: (and (= |v_thr1Thread3of3ForFork0_#res#1.base_9| 0) (<= |v_thr1Thread3of3ForFork0_findMax_~my_max~0#1_45| v_~max~0_103) (= |v_thr1Thread3of3ForFork0_#res#1.offset_9| 0)) InVars {thr1Thread3of3ForFork0_findMax_~my_max~0#1=|v_thr1Thread3of3ForFork0_findMax_~my_max~0#1_45|, ~max~0=v_~max~0_103} OutVars{thr1Thread3of3ForFork0_#res#1.offset=|v_thr1Thread3of3ForFork0_#res#1.offset_9|, thr1Thread3of3ForFork0_findMax_~my_max~0#1=|v_thr1Thread3of3ForFork0_findMax_~my_max~0#1_45|, ~max~0=v_~max~0_103, thr1Thread3of3ForFork0_#res#1.base=|v_thr1Thread3of3ForFork0_#res#1.base_9|} AuxVars[] AssignedVars[thr1Thread3of3ForFork0_#res#1.offset, thr1Thread3of3ForFork0_#res#1.base][111], [100#L718true, Black: 233#(= |thr1Thread2of3ForFork0_findMax_~i~0#1| |thr1Thread2of3ForFork0_findMax_~offset#1|), Black: 236#true, thr1Thread1of3ForFork0InUse, thr1Thread2of3ForFork0InUse, thr1Thread3of3ForFork0InUse, 12#thr1EXITtrue, 242#true, 238#(= |#race~max~0| 0), 216#true, 163#L718true, Black: 221#(= |thr1Thread1of3ForFork0_findMax_~i~0#1| |thr1Thread1of3ForFork0_findMax_~offset#1|), 178#L729-5true]) [2023-08-29 09:28:54,371 INFO L383 tUnfolder$Statistics]: this new event has 47 ancestors and is cut-off event [2023-08-29 09:28:54,371 INFO L386 tUnfolder$Statistics]: existing Event has 47 ancestors and is cut-off event [2023-08-29 09:28:54,371 INFO L386 tUnfolder$Statistics]: existing Event has 44 ancestors and is cut-off event [2023-08-29 09:28:54,371 INFO L386 tUnfolder$Statistics]: existing Event has 47 ancestors and is cut-off event [2023-08-29 09:28:54,455 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1211] L719-1-->thr1EXIT: Formula: (and (= |v_thr1Thread3of3ForFork0_#res#1.base_9| 0) (<= |v_thr1Thread3of3ForFork0_findMax_~my_max~0#1_45| v_~max~0_103) (= |v_thr1Thread3of3ForFork0_#res#1.offset_9| 0)) InVars {thr1Thread3of3ForFork0_findMax_~my_max~0#1=|v_thr1Thread3of3ForFork0_findMax_~my_max~0#1_45|, ~max~0=v_~max~0_103} OutVars{thr1Thread3of3ForFork0_#res#1.offset=|v_thr1Thread3of3ForFork0_#res#1.offset_9|, thr1Thread3of3ForFork0_findMax_~my_max~0#1=|v_thr1Thread3of3ForFork0_findMax_~my_max~0#1_45|, ~max~0=v_~max~0_103, thr1Thread3of3ForFork0_#res#1.base=|v_thr1Thread3of3ForFork0_#res#1.base_9|} AuxVars[] AssignedVars[thr1Thread3of3ForFork0_#res#1.offset, thr1Thread3of3ForFork0_#res#1.base][111], [164#L729-4true, 100#L718true, Black: 233#(= |thr1Thread2of3ForFork0_findMax_~i~0#1| |thr1Thread2of3ForFork0_findMax_~offset#1|), Black: 236#true, thr1Thread1of3ForFork0InUse, thr1Thread2of3ForFork0InUse, thr1Thread3of3ForFork0InUse, 12#thr1EXITtrue, 242#true, 238#(= |#race~max~0| 0), 216#true, 163#L718true, Black: 221#(= |thr1Thread1of3ForFork0_findMax_~i~0#1| |thr1Thread1of3ForFork0_findMax_~offset#1|)]) [2023-08-29 09:28:54,455 INFO L383 tUnfolder$Statistics]: this new event has 50 ancestors and is cut-off event [2023-08-29 09:28:54,455 INFO L386 tUnfolder$Statistics]: existing Event has 50 ancestors and is cut-off event [2023-08-29 09:28:54,456 INFO L386 tUnfolder$Statistics]: existing Event has 47 ancestors and is cut-off event [2023-08-29 09:28:54,456 INFO L386 tUnfolder$Statistics]: existing Event has 50 ancestors and is cut-off event [2023-08-29 09:28:54,486 INFO L130 PetriNetUnfolder]: 20305/34418 cut-off events. [2023-08-29 09:28:54,486 INFO L131 PetriNetUnfolder]: For 8167/8265 co-relation queries the response was YES. [2023-08-29 09:28:54,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74681 conditions, 34418 events. 20305/34418 cut-off events. For 8167/8265 co-relation queries the response was YES. Maximal size of possible extension queue 1357. Compared 303100 event pairs, 9609 based on Foata normal form. 620/32001 useless extension candidates. Maximal degree in co-relation 74671. Up to 16054 conditions per place. [2023-08-29 09:28:54,655 INFO L137 encePairwiseOnDemand]: 405/411 looper letters, 110 selfloop transitions, 6 changer transitions 0/172 dead transitions. [2023-08-29 09:28:54,655 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 172 transitions, 785 flow [2023-08-29 09:28:54,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 09:28:54,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 09:28:54,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1198 transitions. [2023-08-29 09:28:54,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48580697485806973 [2023-08-29 09:28:54,658 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1198 transitions. [2023-08-29 09:28:54,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1198 transitions. [2023-08-29 09:28:54,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:28:54,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1198 transitions. [2023-08-29 09:28:54,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 199.66666666666666) internal successors, (1198), 6 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states 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 09:28:54,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 411.0) internal successors, (2877), 7 states have internal predecessors, (2877), 0 states have call successors, (0), 0 states 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 09:28:54,663 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 411.0) internal successors, (2877), 7 states have internal predecessors, (2877), 0 states have call successors, (0), 0 states 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 09:28:54,663 INFO L175 Difference]: Start difference. First operand has 86 places, 93 transitions, 319 flow. Second operand 6 states and 1198 transitions. [2023-08-29 09:28:54,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 172 transitions, 785 flow [2023-08-29 09:28:54,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 172 transitions, 747 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 09:28:54,696 INFO L231 Difference]: Finished difference. Result has 88 places, 92 transitions, 299 flow [2023-08-29 09:28:54,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=299, PETRI_PLACES=88, PETRI_TRANSITIONS=92} [2023-08-29 09:28:54,698 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, -3 predicate places. [2023-08-29 09:28:54,698 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 92 transitions, 299 flow [2023-08-29 09:28:54,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 183.83333333333334) internal successors, (1103), 6 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states 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 09:28:54,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:28:54,698 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-29 09:28:54,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-29 09:28:54,699 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-08-29 09:28:54,699 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:28:54,699 INFO L85 PathProgramCache]: Analyzing trace with hash -498985217, now seen corresponding path program 1 times [2023-08-29 09:28:54,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:28:54,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890922715] [2023-08-29 09:28:54,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:28:54,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:28:54,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:28:54,708 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 09:28:54,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:28:54,718 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 09:28:54,718 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 09:28:54,718 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 33 remaining) [2023-08-29 09:28:54,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (31 of 33 remaining) [2023-08-29 09:28:54,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (30 of 33 remaining) [2023-08-29 09:28:54,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (29 of 33 remaining) [2023-08-29 09:28:54,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (28 of 33 remaining) [2023-08-29 09:28:54,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (27 of 33 remaining) [2023-08-29 09:28:54,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (26 of 33 remaining) [2023-08-29 09:28:54,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (25 of 33 remaining) [2023-08-29 09:28:54,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (24 of 33 remaining) [2023-08-29 09:28:54,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (23 of 33 remaining) [2023-08-29 09:28:54,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (22 of 33 remaining) [2023-08-29 09:28:54,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (21 of 33 remaining) [2023-08-29 09:28:54,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (20 of 33 remaining) [2023-08-29 09:28:54,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (19 of 33 remaining) [2023-08-29 09:28:54,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (18 of 33 remaining) [2023-08-29 09:28:54,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (17 of 33 remaining) [2023-08-29 09:28:54,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 33 remaining) [2023-08-29 09:28:54,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 33 remaining) [2023-08-29 09:28:54,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 33 remaining) [2023-08-29 09:28:54,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (13 of 33 remaining) [2023-08-29 09:28:54,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (12 of 33 remaining) [2023-08-29 09:28:54,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (11 of 33 remaining) [2023-08-29 09:28:54,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 33 remaining) [2023-08-29 09:28:54,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (9 of 33 remaining) [2023-08-29 09:28:54,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (8 of 33 remaining) [2023-08-29 09:28:54,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 33 remaining) [2023-08-29 09:28:54,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 33 remaining) [2023-08-29 09:28:54,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (5 of 33 remaining) [2023-08-29 09:28:54,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (4 of 33 remaining) [2023-08-29 09:28:54,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (3 of 33 remaining) [2023-08-29 09:28:54,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 33 remaining) [2023-08-29 09:28:54,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (1 of 33 remaining) [2023-08-29 09:28:54,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 33 remaining) [2023-08-29 09:28:54,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-29 09:28:54,722 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-29 09:28:54,723 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 09:28:54,723 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-29 09:28:54,748 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 09:28:54,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 273 places, 293 transitions, 618 flow [2023-08-29 09:28:54,778 INFO L130 PetriNetUnfolder]: 33/339 cut-off events. [2023-08-29 09:28:54,778 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-29 09:28:54,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 339 events. 33/339 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1210 event pairs, 0 based on Foata normal form. 0/269 useless extension candidates. Maximal degree in co-relation 270. Up to 10 conditions per place. [2023-08-29 09:28:54,780 INFO L82 GeneralOperation]: Start removeDead. Operand has 273 places, 293 transitions, 618 flow [2023-08-29 09:28:54,782 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 273 places, 293 transitions, 618 flow [2023-08-29 09:28:54,782 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 09:28:54,782 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 273 places, 293 transitions, 618 flow [2023-08-29 09:28:54,783 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 273 places, 293 transitions, 618 flow [2023-08-29 09:28:54,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 273 places, 293 transitions, 618 flow [2023-08-29 09:28:54,809 INFO L130 PetriNetUnfolder]: 33/339 cut-off events. [2023-08-29 09:28:54,809 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-29 09:28:54,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 339 events. 33/339 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1210 event pairs, 0 based on Foata normal form. 0/269 useless extension candidates. Maximal degree in co-relation 270. Up to 10 conditions per place. [2023-08-29 09:28:54,820 INFO L119 LiptonReduction]: Number of co-enabled transitions 56576 [2023-08-29 09:28:58,127 INFO L134 LiptonReduction]: Checked pairs total: 178683 [2023-08-29 09:28:58,127 INFO L136 LiptonReduction]: Total number of compositions: 229 [2023-08-29 09:28:58,128 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 09:28:58,129 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;@7b752c85, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 09:28:58,129 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2023-08-29 09:28:58,130 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2023-08-29 09:28:58,130 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:28:58,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:28:58,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 09:28:58,130 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2023-08-29 09:28:58,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:28:58,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1839710655, now seen corresponding path program 1 times [2023-08-29 09:28:58,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:28:58,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755769895] [2023-08-29 09:28:58,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:28:58,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:28:58,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:28:58,139 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 09:28:58,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:28:58,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755769895] [2023-08-29 09:28:58,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755769895] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:28:58,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:28:58,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 09:28:58,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253051275] [2023-08-29 09:28:58,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:28:58,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 09:28:58,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:28:58,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 09:28:58,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 09:28:58,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 522 [2023-08-29 09:28:58,141 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 126 transitions, 284 flow. Second operand has 2 states, 2 states have (on average 249.5) internal successors, (499), 2 states have internal predecessors, (499), 0 states have call successors, (0), 0 states 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 09:28:58,141 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:28:58,141 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 522 [2023-08-29 09:28:58,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:29:01,771 INFO L130 PetriNetUnfolder]: 32645/57633 cut-off events. [2023-08-29 09:29:01,772 INFO L131 PetriNetUnfolder]: For 7056/7056 co-relation queries the response was YES. [2023-08-29 09:29:01,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102721 conditions, 57633 events. 32645/57633 cut-off events. For 7056/7056 co-relation queries the response was YES. Maximal size of possible extension queue 2632. Compared 570597 event pairs, 24239 based on Foata normal form. 7978/56471 useless extension candidates. Maximal degree in co-relation 10497. Up to 40984 conditions per place. [2023-08-29 09:29:02,065 INFO L137 encePairwiseOnDemand]: 497/522 looper letters, 38 selfloop transitions, 0 changer transitions 0/101 dead transitions. [2023-08-29 09:29:02,065 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 101 transitions, 310 flow [2023-08-29 09:29:02,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 09:29:02,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 09:29:02,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 557 transitions. [2023-08-29 09:29:02,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5335249042145593 [2023-08-29 09:29:02,067 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 557 transitions. [2023-08-29 09:29:02,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 557 transitions. [2023-08-29 09:29:02,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:29:02,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 557 transitions. [2023-08-29 09:29:02,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 278.5) internal successors, (557), 2 states have internal predecessors, (557), 0 states have call successors, (0), 0 states 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 09:29:02,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 522.0) internal successors, (1566), 3 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:29:02,070 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 522.0) internal successors, (1566), 3 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:29:02,070 INFO L175 Difference]: Start difference. First operand has 119 places, 126 transitions, 284 flow. Second operand 2 states and 557 transitions. [2023-08-29 09:29:02,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 101 transitions, 310 flow [2023-08-29 09:29:02,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 101 transitions, 298 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-08-29 09:29:02,078 INFO L231 Difference]: Finished difference. Result has 103 places, 101 transitions, 222 flow [2023-08-29 09:29:02,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=222, PETRI_PLACES=103, PETRI_TRANSITIONS=101} [2023-08-29 09:29:02,078 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, -16 predicate places. [2023-08-29 09:29:02,079 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 101 transitions, 222 flow [2023-08-29 09:29:02,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 249.5) internal successors, (499), 2 states have internal predecessors, (499), 0 states have call successors, (0), 0 states 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 09:29:02,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:29:02,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 09:29:02,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-29 09:29:02,079 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2023-08-29 09:29:02,080 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:29:02,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1564535390, now seen corresponding path program 1 times [2023-08-29 09:29:02,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:29:02,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381018274] [2023-08-29 09:29:02,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:29:02,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:29:02,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:29:02,096 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 09:29:02,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:29:02,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381018274] [2023-08-29 09:29:02,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381018274] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:29:02,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:29:02,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 09:29:02,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158236848] [2023-08-29 09:29:02,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:29:02,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 09:29:02,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:29:02,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 09:29:02,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 09:29:02,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 522 [2023-08-29 09:29:02,111 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 101 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states 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 09:29:02,111 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:29:02,111 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 522 [2023-08-29 09:29:02,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:29:06,627 INFO L130 PetriNetUnfolder]: 41268/68204 cut-off events. [2023-08-29 09:29:06,627 INFO L131 PetriNetUnfolder]: For 1933/1933 co-relation queries the response was YES. [2023-08-29 09:29:06,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122381 conditions, 68204 events. 41268/68204 cut-off events. For 1933/1933 co-relation queries the response was YES. Maximal size of possible extension queue 2739. Compared 625428 event pairs, 20481 based on Foata normal form. 0/57510 useless extension candidates. Maximal degree in co-relation 122374. Up to 40887 conditions per place. [2023-08-29 09:29:07,055 INFO L137 encePairwiseOnDemand]: 519/522 looper letters, 66 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2023-08-29 09:29:07,081 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 131 transitions, 433 flow [2023-08-29 09:29:07,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 09:29:07,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 09:29:07,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 792 transitions. [2023-08-29 09:29:07,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5057471264367817 [2023-08-29 09:29:07,083 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 792 transitions. [2023-08-29 09:29:07,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 792 transitions. [2023-08-29 09:29:07,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:29:07,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 792 transitions. [2023-08-29 09:29:07,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 264.0) internal successors, (792), 3 states have internal predecessors, (792), 0 states have call successors, (0), 0 states 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 09:29:07,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states 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 09:29:07,086 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states 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 09:29:07,086 INFO L175 Difference]: Start difference. First operand has 103 places, 101 transitions, 222 flow. Second operand 3 states and 792 transitions. [2023-08-29 09:29:07,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 131 transitions, 433 flow [2023-08-29 09:29:07,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 131 transitions, 433 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 09:29:07,088 INFO L231 Difference]: Finished difference. Result has 106 places, 102 transitions, 234 flow [2023-08-29 09:29:07,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=106, PETRI_TRANSITIONS=102} [2023-08-29 09:29:07,092 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, -13 predicate places. [2023-08-29 09:29:07,092 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 102 transitions, 234 flow [2023-08-29 09:29:07,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states 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 09:29:07,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:29:07,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 09:29:07,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-29 09:29:07,093 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2023-08-29 09:29:07,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:29:07,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1658872351, now seen corresponding path program 1 times [2023-08-29 09:29:07,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:29:07,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066553483] [2023-08-29 09:29:07,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:29:07,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:29:07,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:29:07,201 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 09:29:07,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:29:07,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066553483] [2023-08-29 09:29:07,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066553483] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:29:07,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:29:07,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 09:29:07,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504709237] [2023-08-29 09:29:07,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:29:07,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 09:29:07,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:29:07,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 09:29:07,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 09:29:07,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 522 [2023-08-29 09:29:07,390 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 102 transitions, 234 flow. Second operand has 6 states, 6 states have (on average 237.66666666666666) internal successors, (1426), 6 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states 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 09:29:07,390 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:29:07,390 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 522 [2023-08-29 09:29:07,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:29:15,401 INFO L130 PetriNetUnfolder]: 76313/115066 cut-off events. [2023-08-29 09:29:15,403 INFO L131 PetriNetUnfolder]: For 7775/7775 co-relation queries the response was YES. [2023-08-29 09:29:15,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221006 conditions, 115066 events. 76313/115066 cut-off events. For 7775/7775 co-relation queries the response was YES. Maximal size of possible extension queue 4562. Compared 1001322 event pairs, 30799 based on Foata normal form. 2340/103276 useless extension candidates. Maximal degree in co-relation 220997. Up to 51738 conditions per place. [2023-08-29 09:29:16,234 INFO L137 encePairwiseOnDemand]: 516/522 looper letters, 149 selfloop transitions, 6 changer transitions 0/213 dead transitions. [2023-08-29 09:29:16,234 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 213 transitions, 826 flow [2023-08-29 09:29:16,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 09:29:16,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 09:29:16,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1571 transitions. [2023-08-29 09:29:16,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015964240102171 [2023-08-29 09:29:16,241 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1571 transitions. [2023-08-29 09:29:16,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1571 transitions. [2023-08-29 09:29:16,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:29:16,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1571 transitions. [2023-08-29 09:29:16,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 261.8333333333333) internal successors, (1571), 6 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states 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 09:29:16,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 522.0) internal successors, (3654), 7 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states 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 09:29:16,404 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 522.0) internal successors, (3654), 7 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states 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 09:29:16,404 INFO L175 Difference]: Start difference. First operand has 106 places, 102 transitions, 234 flow. Second operand 6 states and 1571 transitions. [2023-08-29 09:29:16,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 213 transitions, 826 flow [2023-08-29 09:29:16,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 213 transitions, 824 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 09:29:16,416 INFO L231 Difference]: Finished difference. Result has 109 places, 101 transitions, 242 flow [2023-08-29 09:29:16,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=242, PETRI_PLACES=109, PETRI_TRANSITIONS=101} [2023-08-29 09:29:16,417 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, -10 predicate places. [2023-08-29 09:29:16,417 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 101 transitions, 242 flow [2023-08-29 09:29:16,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 237.66666666666666) internal successors, (1426), 6 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states 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 09:29:16,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:29:16,418 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 09:29:16,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-29 09:29:16,418 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2023-08-29 09:29:16,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:29:16,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1539851740, now seen corresponding path program 1 times [2023-08-29 09:29:16,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:29:16,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387007091] [2023-08-29 09:29:16,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:29:16,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:29:16,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:29:16,438 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 09:29:16,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:29:16,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387007091] [2023-08-29 09:29:16,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387007091] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:29:16,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:29:16,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 09:29:16,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135633023] [2023-08-29 09:29:16,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:29:16,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 09:29:16,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:29:16,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 09:29:16,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 09:29:16,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 522 [2023-08-29 09:29:16,454 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 101 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 0 states 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 09:29:16,454 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:29:16,454 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 522 [2023-08-29 09:29:16,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:29:22,666 INFO L130 PetriNetUnfolder]: 51829/90159 cut-off events. [2023-08-29 09:29:22,666 INFO L131 PetriNetUnfolder]: For 13026/13026 co-relation queries the response was YES. [2023-08-29 09:29:22,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165990 conditions, 90159 events. 51829/90159 cut-off events. For 13026/13026 co-relation queries the response was YES. Maximal size of possible extension queue 3241. Compared 904792 event pairs, 30725 based on Foata normal form. 0/76591 useless extension candidates. Maximal degree in co-relation 165981. Up to 51510 conditions per place. [2023-08-29 09:29:23,217 INFO L137 encePairwiseOnDemand]: 519/522 looper letters, 67 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2023-08-29 09:29:23,217 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 131 transitions, 462 flow [2023-08-29 09:29:23,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 09:29:23,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 09:29:23,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 791 transitions. [2023-08-29 09:29:23,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5051085568326947 [2023-08-29 09:29:23,219 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 791 transitions. [2023-08-29 09:29:23,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 791 transitions. [2023-08-29 09:29:23,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:29:23,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 791 transitions. [2023-08-29 09:29:23,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.6666666666667) internal successors, (791), 3 states have internal predecessors, (791), 0 states have call successors, (0), 0 states 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 09:29:23,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states 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 09:29:23,223 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states 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 09:29:23,223 INFO L175 Difference]: Start difference. First operand has 109 places, 101 transitions, 242 flow. Second operand 3 states and 791 transitions. [2023-08-29 09:29:23,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 131 transitions, 462 flow [2023-08-29 09:29:23,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 131 transitions, 446 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-29 09:29:23,229 INFO L231 Difference]: Finished difference. Result has 107 places, 102 transitions, 242 flow [2023-08-29 09:29:23,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=107, PETRI_TRANSITIONS=102} [2023-08-29 09:29:23,230 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, -12 predicate places. [2023-08-29 09:29:23,230 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 102 transitions, 242 flow [2023-08-29 09:29:23,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 0 states 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 09:29:23,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:29:23,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 09:29:23,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-29 09:29:23,231 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2023-08-29 09:29:23,231 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:29:23,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1583127777, now seen corresponding path program 1 times [2023-08-29 09:29:23,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:29:23,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731646436] [2023-08-29 09:29:23,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:29:23,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:29:23,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:29:23,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 09:29:23,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:29:23,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731646436] [2023-08-29 09:29:23,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731646436] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:29:23,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:29:23,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 09:29:23,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445816381] [2023-08-29 09:29:23,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:29:23,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 09:29:23,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:29:23,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 09:29:23,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 09:29:23,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 522 [2023-08-29 09:29:23,275 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 102 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 0 states have call successors, (0), 0 states 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 09:29:23,275 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:29:23,276 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 522 [2023-08-29 09:29:23,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:30:12,911 INFO L130 PetriNetUnfolder]: 562929/777284 cut-off events. [2023-08-29 09:30:12,912 INFO L131 PetriNetUnfolder]: For 104692/104692 co-relation queries the response was YES. [2023-08-29 09:30:14,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1599179 conditions, 777284 events. 562929/777284 cut-off events. For 104692/104692 co-relation queries the response was YES. Maximal size of possible extension queue 22502. Compared 6649559 event pairs, 211071 based on Foata normal form. 0/709632 useless extension candidates. Maximal degree in co-relation 1599169. Up to 440510 conditions per place. [2023-08-29 09:30:18,481 INFO L137 encePairwiseOnDemand]: 494/522 looper letters, 102 selfloop transitions, 20 changer transitions 0/158 dead transitions. [2023-08-29 09:30:18,481 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 158 transitions, 631 flow [2023-08-29 09:30:18,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 09:30:18,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 09:30:18,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 783 transitions. [2023-08-29 09:30:18,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-29 09:30:18,483 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 783 transitions. [2023-08-29 09:30:18,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 783 transitions. [2023-08-29 09:30:18,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:30:18,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 783 transitions. [2023-08-29 09:30:18,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 261.0) internal successors, (783), 3 states have internal predecessors, (783), 0 states have call successors, (0), 0 states 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 09:30:18,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states 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 09:30:18,508 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states 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 09:30:18,508 INFO L175 Difference]: Start difference. First operand has 107 places, 102 transitions, 242 flow. Second operand 3 states and 783 transitions. [2023-08-29 09:30:18,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 158 transitions, 631 flow [2023-08-29 09:30:18,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 158 transitions, 627 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 09:30:18,571 INFO L231 Difference]: Finished difference. Result has 110 places, 122 transitions, 416 flow [2023-08-29 09:30:18,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=416, PETRI_PLACES=110, PETRI_TRANSITIONS=122} [2023-08-29 09:30:18,571 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, -9 predicate places. [2023-08-29 09:30:18,571 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 122 transitions, 416 flow [2023-08-29 09:30:18,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 0 states have call successors, (0), 0 states 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 09:30:18,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:30:18,576 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 09:30:18,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-29 09:30:18,577 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2023-08-29 09:30:18,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:30:18,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1867967614, now seen corresponding path program 1 times [2023-08-29 09:30:18,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:30:18,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556147605] [2023-08-29 09:30:18,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:30:18,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:30:18,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:30:18,853 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 09:30:18,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:30:18,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556147605] [2023-08-29 09:30:18,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556147605] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:30:18,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:30:18,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 09:30:18,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368567282] [2023-08-29 09:30:18,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:30:18,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 09:30:18,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:30:18,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 09:30:18,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 09:30:19,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 522 [2023-08-29 09:30:19,029 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 122 transitions, 416 flow. Second operand has 6 states, 6 states have (on average 237.83333333333334) internal successors, (1427), 6 states have internal predecessors, (1427), 0 states have call successors, (0), 0 states 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 09:30:19,029 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:30:19,029 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 522 [2023-08-29 09:30:19,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand