./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_75-tricky_address2_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_75-tricky_address2_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3c0354ee6107efc04d15102ecf9eef73430e38e14b70f16419cd07cd733fd0df --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 18:27:57,151 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 18:27:57,154 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 18:27:57,190 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 18:27:57,190 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 18:27:57,193 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 18:27:57,194 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 18:27:57,197 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 18:27:57,198 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 18:27:57,202 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 18:27:57,203 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 18:27:57,205 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 18:27:57,206 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 18:27:57,208 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 18:27:57,209 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 18:27:57,215 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 18:27:57,216 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 18:27:57,216 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 18:27:57,218 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 18:27:57,221 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 18:27:57,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 18:27:57,224 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 18:27:57,225 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 18:27:57,233 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 18:27:57,239 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 18:27:57,240 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 18:27:57,240 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 18:27:57,241 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 18:27:57,243 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 18:27:57,244 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 18:27:57,244 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 18:27:57,245 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 18:27:57,246 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 18:27:57,247 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 18:27:57,248 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 18:27:57,249 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 18:27:57,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 18:27:57,249 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 18:27:57,249 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 18:27:57,250 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 18:27:57,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 18:27:57,252 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 18:27:57,281 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 18:27:57,281 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 18:27:57,282 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 18:27:57,282 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 18:27:57,283 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 18:27:57,283 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 18:27:57,283 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 18:27:57,284 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 18:27:57,284 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 18:27:57,284 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 18:27:57,285 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 18:27:57,285 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 18:27:57,285 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 18:27:57,285 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 18:27:57,285 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 18:27:57,285 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 18:27:57,286 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 18:27:57,286 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 18:27:57,286 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 18:27:57,286 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 18:27:57,286 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 18:27:57,286 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 18:27:57,286 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 18:27:57,287 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 18:27:57,287 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 18:27:57,287 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 18:27:57,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 18:27:57,287 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 18:27:57,287 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 18:27:57,288 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 18:27:57,288 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 18:27:57,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 18:27:57,288 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 18:27:57,288 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 18:27:57,289 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 18:27:57,289 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 18:27:57,289 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 18:27:57,289 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c0354ee6107efc04d15102ecf9eef73430e38e14b70f16419cd07cd733fd0df Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-29 18:27:57,556 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 18:27:57,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 18:27:57,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 18:27:57,575 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 18:27:57,575 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 18:27:57,576 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_75-tricky_address2_racefree.i [2023-08-29 18:27:58,543 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 18:27:58,788 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 18:27:58,790 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_75-tricky_address2_racefree.i [2023-08-29 18:27:58,815 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0e7e9b1c/c6a3d7ec66b345e7b813e325f3da8e80/FLAGe5fda3de1 [2023-08-29 18:27:58,828 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0e7e9b1c/c6a3d7ec66b345e7b813e325f3da8e80 [2023-08-29 18:27:58,830 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 18:27:58,831 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 18:27:58,832 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 18:27:58,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 18:27:58,836 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 18:27:58,837 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:27:58" (1/1) ... [2023-08-29 18:27:58,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5067ba29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:58, skipping insertion in model container [2023-08-29 18:27:58,838 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:27:58" (1/1) ... [2023-08-29 18:27:58,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 18:27:58,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 18:27:59,174 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_75-tricky_address2_racefree.i[41323,41336] [2023-08-29 18:27:59,216 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 18:27:59,234 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 18:27:59,262 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_75-tricky_address2_racefree.i[41323,41336] [2023-08-29 18:27:59,290 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 18:27:59,342 INFO L208 MainTranslator]: Completed translation [2023-08-29 18:27:59,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:59 WrapperNode [2023-08-29 18:27:59,342 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 18:27:59,343 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 18:27:59,343 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 18:27:59,344 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 18:27:59,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:59" (1/1) ... [2023-08-29 18:27:59,374 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:59" (1/1) ... [2023-08-29 18:27:59,416 INFO L138 Inliner]: procedures = 270, calls = 41, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 253 [2023-08-29 18:27:59,416 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 18:27:59,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 18:27:59,418 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 18:27:59,418 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 18:27:59,424 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:59" (1/1) ... [2023-08-29 18:27:59,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:59" (1/1) ... [2023-08-29 18:27:59,439 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:59" (1/1) ... [2023-08-29 18:27:59,439 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:59" (1/1) ... [2023-08-29 18:27:59,452 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:59" (1/1) ... [2023-08-29 18:27:59,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:59" (1/1) ... [2023-08-29 18:27:59,458 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:59" (1/1) ... [2023-08-29 18:27:59,459 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:59" (1/1) ... [2023-08-29 18:27:59,461 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 18:27:59,462 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 18:27:59,462 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 18:27:59,462 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 18:27:59,463 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:59" (1/1) ... [2023-08-29 18:27:59,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 18:27:59,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:27:59,519 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 18:27:59,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 18:27:59,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 18:27:59,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 18:27:59,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 18:27:59,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 18:27:59,575 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 18:27:59,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 18:27:59,575 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 18:27:59,575 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 18:27:59,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 18:27:59,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 18:27:59,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 18:27:59,577 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 18:27:59,723 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 18:27:59,738 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 18:28:00,049 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 18:28:00,055 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 18:28:00,064 INFO L302 CfgBuilder]: Removed 23 assume(true) statements. [2023-08-29 18:28:00,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:28:00 BoogieIcfgContainer [2023-08-29 18:28:00,066 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 18:28:00,067 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 18:28:00,068 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 18:28:00,070 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 18:28:00,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 06:27:58" (1/3) ... [2023-08-29 18:28:00,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55d61a51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:28:00, skipping insertion in model container [2023-08-29 18:28:00,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:59" (2/3) ... [2023-08-29 18:28:00,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55d61a51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:28:00, skipping insertion in model container [2023-08-29 18:28:00,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:28:00" (3/3) ... [2023-08-29 18:28:00,075 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_75-tricky_address2_racefree.i [2023-08-29 18:28:00,081 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 18:28:00,088 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 18:28:00,088 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-08-29 18:28:00,089 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 18:28:00,232 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-29 18:28:00,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 234 places, 262 transitions, 532 flow [2023-08-29 18:28:00,377 INFO L130 PetriNetUnfolder]: 45/371 cut-off events. [2023-08-29 18:28:00,377 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:28:00,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 377 conditions, 371 events. 45/371 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1500 event pairs, 0 based on Foata normal form. 0/306 useless extension candidates. Maximal degree in co-relation 215. Up to 8 conditions per place. [2023-08-29 18:28:00,383 INFO L82 GeneralOperation]: Start removeDead. Operand has 234 places, 262 transitions, 532 flow [2023-08-29 18:28:00,388 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 234 places, 262 transitions, 532 flow [2023-08-29 18:28:00,390 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:28:00,395 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 234 places, 262 transitions, 532 flow [2023-08-29 18:28:00,397 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 234 places, 262 transitions, 532 flow [2023-08-29 18:28:00,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 234 places, 262 transitions, 532 flow [2023-08-29 18:28:00,446 INFO L130 PetriNetUnfolder]: 45/371 cut-off events. [2023-08-29 18:28:00,446 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:28:00,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 377 conditions, 371 events. 45/371 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1500 event pairs, 0 based on Foata normal form. 0/306 useless extension candidates. Maximal degree in co-relation 215. Up to 8 conditions per place. [2023-08-29 18:28:00,455 INFO L119 LiptonReduction]: Number of co-enabled transitions 23230 [2023-08-29 18:28:02,601 INFO L134 LiptonReduction]: Checked pairs total: 83563 [2023-08-29 18:28:02,601 INFO L136 LiptonReduction]: Total number of compositions: 160 [2023-08-29 18:28:02,613 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:28:02,623 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;@4339da19, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:28:02,624 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-29 18:28:02,631 INFO L130 PetriNetUnfolder]: 8/40 cut-off events. [2023-08-29 18:28:02,631 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:28:02,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:28:02,632 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-29 18:28:02,632 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-29 18:28:02,637 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:28:02,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1380029164, now seen corresponding path program 1 times [2023-08-29 18:28:02,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:28:02,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700509989] [2023-08-29 18:28:02,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:28:02,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:28:02,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:28:02,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:28:02,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:28:02,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700509989] [2023-08-29 18:28:02,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700509989] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:28:02,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:28:02,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:28:02,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591590302] [2023-08-29 18:28:02,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:28:02,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:28:02,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:28:02,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:28:02,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:28:02,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 422 [2023-08-29 18:28:02,938 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 131 transitions, 270 flow. Second operand has 3 states, 3 states have (on average 228.66666666666666) internal successors, (686), 3 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:02,938 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:28:02,938 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 422 [2023-08-29 18:28:02,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:28:03,094 INFO L130 PetriNetUnfolder]: 399/1527 cut-off events. [2023-08-29 18:28:03,095 INFO L131 PetriNetUnfolder]: For 3/5 co-relation queries the response was YES. [2023-08-29 18:28:03,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2314 conditions, 1527 events. 399/1527 cut-off events. For 3/5 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 10733 event pairs, 357 based on Foata normal form. 145/1529 useless extension candidates. Maximal degree in co-relation 2214. Up to 779 conditions per place. [2023-08-29 18:28:03,100 INFO L137 encePairwiseOnDemand]: 399/422 looper letters, 43 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2023-08-29 18:28:03,101 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 112 transitions, 322 flow [2023-08-29 18:28:03,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:28:03,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:28:03,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 747 transitions. [2023-08-29 18:28:03,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.590047393364929 [2023-08-29 18:28:03,162 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 747 transitions. [2023-08-29 18:28:03,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 747 transitions. [2023-08-29 18:28:03,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:28:03,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 747 transitions. [2023-08-29 18:28:03,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 249.0) internal successors, (747), 3 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:03,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:03,184 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:03,185 INFO L175 Difference]: Start difference. First operand has 110 places, 131 transitions, 270 flow. Second operand 3 states and 747 transitions. [2023-08-29 18:28:03,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 112 transitions, 322 flow [2023-08-29 18:28:03,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 112 transitions, 322 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:28:03,191 INFO L231 Difference]: Finished difference. Result has 113 places, 112 transitions, 242 flow [2023-08-29 18:28:03,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=113, PETRI_TRANSITIONS=112} [2023-08-29 18:28:03,195 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 3 predicate places. [2023-08-29 18:28:03,195 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 112 transitions, 242 flow [2023-08-29 18:28:03,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 228.66666666666666) internal successors, (686), 3 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:03,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:28:03,196 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-29 18:28:03,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 18:28:03,197 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-29 18:28:03,198 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:28:03,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1826499995, now seen corresponding path program 1 times [2023-08-29 18:28:03,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:28:03,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130864144] [2023-08-29 18:28:03,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:28:03,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:28:03,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:28:03,305 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:28:03,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:28:03,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130864144] [2023-08-29 18:28:03,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130864144] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:28:03,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838870201] [2023-08-29 18:28:03,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:28:03,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:28:03,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:28:03,309 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 18:28:03,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-29 18:28:03,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:28:03,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 18:28:03,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:28:03,471 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:28:03,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:28:03,484 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:28:03,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838870201] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:28:03,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 18:28:03,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 18:28:03,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744419410] [2023-08-29 18:28:03,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 18:28:03,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 18:28:03,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:28:03,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 18:28:03,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 18:28:03,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 422 [2023-08-29 18:28:03,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 112 transitions, 242 flow. Second operand has 7 states, 7 states have (on average 227.57142857142858) internal successors, (1593), 7 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:03,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:28:03,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 422 [2023-08-29 18:28:03,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:28:03,705 INFO L130 PetriNetUnfolder]: 399/1530 cut-off events. [2023-08-29 18:28:03,705 INFO L131 PetriNetUnfolder]: For 3/5 co-relation queries the response was YES. [2023-08-29 18:28:03,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2330 conditions, 1530 events. 399/1530 cut-off events. For 3/5 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 10758 event pairs, 357 based on Foata normal form. 0/1387 useless extension candidates. Maximal degree in co-relation 2318. Up to 779 conditions per place. [2023-08-29 18:28:03,711 INFO L137 encePairwiseOnDemand]: 419/422 looper letters, 43 selfloop transitions, 5 changer transitions 0/115 dead transitions. [2023-08-29 18:28:03,711 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 115 transitions, 350 flow [2023-08-29 18:28:03,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 18:28:03,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 18:28:03,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1407 transitions. [2023-08-29 18:28:03,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5556872037914692 [2023-08-29 18:28:03,714 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1407 transitions. [2023-08-29 18:28:03,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1407 transitions. [2023-08-29 18:28:03,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:28:03,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1407 transitions. [2023-08-29 18:28:03,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 234.5) internal successors, (1407), 6 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:03,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 422.0) internal successors, (2954), 7 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:03,722 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 422.0) internal successors, (2954), 7 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:03,722 INFO L175 Difference]: Start difference. First operand has 113 places, 112 transitions, 242 flow. Second operand 6 states and 1407 transitions. [2023-08-29 18:28:03,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 115 transitions, 350 flow [2023-08-29 18:28:03,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 115 transitions, 346 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-29 18:28:03,726 INFO L231 Difference]: Finished difference. Result has 120 places, 115 transitions, 274 flow [2023-08-29 18:28:03,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=274, PETRI_PLACES=120, PETRI_TRANSITIONS=115} [2023-08-29 18:28:03,726 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 10 predicate places. [2023-08-29 18:28:03,727 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 115 transitions, 274 flow [2023-08-29 18:28:03,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 227.57142857142858) internal successors, (1593), 7 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:03,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:28:03,728 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-08-29 18:28:03,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-29 18:28:03,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:28:03,935 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-29 18:28:03,935 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:28:03,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1475204820, now seen corresponding path program 2 times [2023-08-29 18:28:03,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:28:03,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434242098] [2023-08-29 18:28:03,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:28:03,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:28:03,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:28:04,002 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:28:04,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:28:04,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434242098] [2023-08-29 18:28:04,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434242098] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:28:04,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182629410] [2023-08-29 18:28:04,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 18:28:04,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:28:04,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:28:04,031 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 18:28:04,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-29 18:28:04,090 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 18:28:04,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 18:28:04,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 18:28:04,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:28:04,105 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:28:04,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:28:04,161 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:28:04,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182629410] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:28:04,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 18:28:04,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-29 18:28:04,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654326536] [2023-08-29 18:28:04,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 18:28:04,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-29 18:28:04,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:28:04,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-29 18:28:04,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-29 18:28:04,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 422 [2023-08-29 18:28:04,189 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 115 transitions, 274 flow. Second operand has 13 states, 13 states have (on average 227.30769230769232) internal successors, (2955), 13 states have internal predecessors, (2955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:04,189 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:28:04,189 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 422 [2023-08-29 18:28:04,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:28:04,390 INFO L130 PetriNetUnfolder]: 399/1536 cut-off events. [2023-08-29 18:28:04,390 INFO L131 PetriNetUnfolder]: For 23/25 co-relation queries the response was YES. [2023-08-29 18:28:04,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2367 conditions, 1536 events. 399/1536 cut-off events. For 23/25 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 10758 event pairs, 357 based on Foata normal form. 6/1400 useless extension candidates. Maximal degree in co-relation 2309. Up to 779 conditions per place. [2023-08-29 18:28:04,395 INFO L137 encePairwiseOnDemand]: 419/422 looper letters, 43 selfloop transitions, 11 changer transitions 0/121 dead transitions. [2023-08-29 18:28:04,395 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 121 transitions, 418 flow [2023-08-29 18:28:04,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 18:28:04,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 18:28:04,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2772 transitions. [2023-08-29 18:28:04,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54739336492891 [2023-08-29 18:28:04,400 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2772 transitions. [2023-08-29 18:28:04,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2772 transitions. [2023-08-29 18:28:04,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:28:04,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2772 transitions. [2023-08-29 18:28:04,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 231.0) internal successors, (2772), 12 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:04,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 422.0) internal successors, (5486), 13 states have internal predecessors, (5486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:04,413 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 422.0) internal successors, (5486), 13 states have internal predecessors, (5486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:04,413 INFO L175 Difference]: Start difference. First operand has 120 places, 115 transitions, 274 flow. Second operand 12 states and 2772 transitions. [2023-08-29 18:28:04,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 121 transitions, 418 flow [2023-08-29 18:28:04,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 121 transitions, 404 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-29 18:28:04,418 INFO L231 Difference]: Finished difference. Result has 136 places, 121 transitions, 344 flow [2023-08-29 18:28:04,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=344, PETRI_PLACES=136, PETRI_TRANSITIONS=121} [2023-08-29 18:28:04,419 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 26 predicate places. [2023-08-29 18:28:04,419 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 121 transitions, 344 flow [2023-08-29 18:28:04,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 227.30769230769232) internal successors, (2955), 13 states have internal predecessors, (2955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:04,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:28:04,424 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-08-29 18:28:04,428 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-29 18:28:04,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-29 18:28:04,629 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-29 18:28:04,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:28:04,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1818521228, now seen corresponding path program 3 times [2023-08-29 18:28:04,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:28:04,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203564271] [2023-08-29 18:28:04,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:28:04,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:28:04,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:28:04,669 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 18:28:04,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:28:04,708 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 18:28:04,708 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 18:28:04,709 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-08-29 18:28:04,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2023-08-29 18:28:04,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2023-08-29 18:28:04,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2023-08-29 18:28:04,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2023-08-29 18:28:04,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2023-08-29 18:28:04,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2023-08-29 18:28:04,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2023-08-29 18:28:04,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2023-08-29 18:28:04,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2023-08-29 18:28:04,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2023-08-29 18:28:04,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2023-08-29 18:28:04,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2023-08-29 18:28:04,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2023-08-29 18:28:04,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2023-08-29 18:28:04,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2023-08-29 18:28:04,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2023-08-29 18:28:04,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 18:28:04,717 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2023-08-29 18:28:04,718 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 18:28:04,718 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-29 18:28:04,762 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-29 18:28:04,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 325 places, 365 transitions, 748 flow [2023-08-29 18:28:04,837 INFO L130 PetriNetUnfolder]: 75/613 cut-off events. [2023-08-29 18:28:04,837 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 18:28:04,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627 conditions, 613 events. 75/613 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3045 event pairs, 0 based on Foata normal form. 0/505 useless extension candidates. Maximal degree in co-relation 373. Up to 12 conditions per place. [2023-08-29 18:28:04,842 INFO L82 GeneralOperation]: Start removeDead. Operand has 325 places, 365 transitions, 748 flow [2023-08-29 18:28:04,845 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 325 places, 365 transitions, 748 flow [2023-08-29 18:28:04,845 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:28:04,845 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 325 places, 365 transitions, 748 flow [2023-08-29 18:28:04,846 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 325 places, 365 transitions, 748 flow [2023-08-29 18:28:04,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 325 places, 365 transitions, 748 flow [2023-08-29 18:28:04,903 INFO L130 PetriNetUnfolder]: 75/613 cut-off events. [2023-08-29 18:28:04,903 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 18:28:04,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627 conditions, 613 events. 75/613 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3045 event pairs, 0 based on Foata normal form. 0/505 useless extension candidates. Maximal degree in co-relation 373. Up to 12 conditions per place. [2023-08-29 18:28:04,928 INFO L119 LiptonReduction]: Number of co-enabled transitions 69084 [2023-08-29 18:28:07,681 INFO L134 LiptonReduction]: Checked pairs total: 251503 [2023-08-29 18:28:07,682 INFO L136 LiptonReduction]: Total number of compositions: 222 [2023-08-29 18:28:07,684 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:28:07,688 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;@4339da19, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:28:07,689 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-29 18:28:07,694 INFO L130 PetriNetUnfolder]: 15/88 cut-off events. [2023-08-29 18:28:07,694 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:28:07,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:28:07,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:28:07,695 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 18:28:07,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:28:07,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1093580801, now seen corresponding path program 1 times [2023-08-29 18:28:07,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:28:07,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244998913] [2023-08-29 18:28:07,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:28:07,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:28:07,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:28:07,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:28:07,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:28:07,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244998913] [2023-08-29 18:28:07,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244998913] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:28:07,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:28:07,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:28:07,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991228747] [2023-08-29 18:28:07,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:28:07,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:28:07,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:28:07,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:28:07,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:28:07,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 587 [2023-08-29 18:28:07,741 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 193 transitions, 404 flow. Second operand has 3 states, 3 states have (on average 316.6666666666667) internal successors, (950), 3 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:07,741 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:28:07,741 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 587 [2023-08-29 18:28:07,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:28:10,300 INFO L130 PetriNetUnfolder]: 14690/34803 cut-off events. [2023-08-29 18:28:10,300 INFO L131 PetriNetUnfolder]: For 172/244 co-relation queries the response was YES. [2023-08-29 18:28:10,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56176 conditions, 34803 events. 14690/34803 cut-off events. For 172/244 co-relation queries the response was YES. Maximal size of possible extension queue 880. Compared 374395 event pairs, 13600 based on Foata normal form. 4190/36114 useless extension candidates. Maximal degree in co-relation 26712. Up to 21259 conditions per place. [2023-08-29 18:28:10,452 INFO L137 encePairwiseOnDemand]: 553/587 looper letters, 62 selfloop transitions, 2 changer transitions 0/163 dead transitions. [2023-08-29 18:28:10,452 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 163 transitions, 472 flow [2023-08-29 18:28:10,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:28:10,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:28:10,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1041 transitions. [2023-08-29 18:28:10,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5911413969335605 [2023-08-29 18:28:10,455 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1041 transitions. [2023-08-29 18:28:10,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1041 transitions. [2023-08-29 18:28:10,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:28:10,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1041 transitions. [2023-08-29 18:28:10,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 347.0) internal successors, (1041), 3 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:10,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 587.0) internal successors, (2348), 4 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:10,459 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 587.0) internal successors, (2348), 4 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:10,460 INFO L175 Difference]: Start difference. First operand has 161 places, 193 transitions, 404 flow. Second operand 3 states and 1041 transitions. [2023-08-29 18:28:10,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 163 transitions, 472 flow [2023-08-29 18:28:10,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 163 transitions, 472 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:28:10,462 INFO L231 Difference]: Finished difference. Result has 164 places, 163 transitions, 354 flow [2023-08-29 18:28:10,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=354, PETRI_PLACES=164, PETRI_TRANSITIONS=163} [2023-08-29 18:28:10,463 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, 3 predicate places. [2023-08-29 18:28:10,463 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 163 transitions, 354 flow [2023-08-29 18:28:10,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 316.6666666666667) internal successors, (950), 3 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:10,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:28:10,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:28:10,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 18:28:10,464 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 18:28:10,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:28:10,465 INFO L85 PathProgramCache]: Analyzing trace with hash 719712138, now seen corresponding path program 1 times [2023-08-29 18:28:10,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:28:10,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69454240] [2023-08-29 18:28:10,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:28:10,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:28:10,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:28:10,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:28:10,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:28:10,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69454240] [2023-08-29 18:28:10,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69454240] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:28:10,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142503255] [2023-08-29 18:28:10,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:28:10,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:28:10,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:28:10,492 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 18:28:10,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-29 18:28:10,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:28:10,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-29 18:28:10,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:28:10,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 18:28:10,570 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 18:28:10,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142503255] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:28:10,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 18:28:10,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-29 18:28:10,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826234158] [2023-08-29 18:28:10,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:28:10,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:28:10,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:28:10,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:28:10,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 18:28:10,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 587 [2023-08-29 18:28:10,581 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 163 transitions, 354 flow. Second operand has 3 states, 3 states have (on average 317.0) internal successors, (951), 3 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:10,581 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:28:10,581 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 587 [2023-08-29 18:28:10,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:28:12,757 INFO L130 PetriNetUnfolder]: 14345/34814 cut-off events. [2023-08-29 18:28:12,758 INFO L131 PetriNetUnfolder]: For 150/188 co-relation queries the response was YES. [2023-08-29 18:28:12,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56197 conditions, 34814 events. 14345/34814 cut-off events. For 150/188 co-relation queries the response was YES. Maximal size of possible extension queue 893. Compared 382653 event pairs, 6494 based on Foata normal form. 0/31893 useless extension candidates. Maximal degree in co-relation 56184. Up to 21223 conditions per place. [2023-08-29 18:28:12,891 INFO L137 encePairwiseOnDemand]: 584/587 looper letters, 81 selfloop transitions, 2 changer transitions 0/182 dead transitions. [2023-08-29 18:28:12,892 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 182 transitions, 558 flow [2023-08-29 18:28:12,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:28:12,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:28:12,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1028 transitions. [2023-08-29 18:28:12,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5837592277115276 [2023-08-29 18:28:12,894 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1028 transitions. [2023-08-29 18:28:12,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1028 transitions. [2023-08-29 18:28:12,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:28:12,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1028 transitions. [2023-08-29 18:28:12,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 342.6666666666667) internal successors, (1028), 3 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:12,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 587.0) internal successors, (2348), 4 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:12,899 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 587.0) internal successors, (2348), 4 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:12,899 INFO L175 Difference]: Start difference. First operand has 164 places, 163 transitions, 354 flow. Second operand 3 states and 1028 transitions. [2023-08-29 18:28:12,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 182 transitions, 558 flow [2023-08-29 18:28:12,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 182 transitions, 554 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-29 18:28:12,902 INFO L231 Difference]: Finished difference. Result has 166 places, 164 transitions, 362 flow [2023-08-29 18:28:12,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=362, PETRI_PLACES=166, PETRI_TRANSITIONS=164} [2023-08-29 18:28:12,903 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, 5 predicate places. [2023-08-29 18:28:12,903 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 164 transitions, 362 flow [2023-08-29 18:28:12,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.0) internal successors, (951), 3 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:12,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:28:12,903 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-29 18:28:12,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-29 18:28:13,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:28:13,108 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 18:28:13,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:28:13,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1402746227, now seen corresponding path program 1 times [2023-08-29 18:28:13,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:28:13,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647980051] [2023-08-29 18:28:13,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:28:13,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:28:13,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:28:13,130 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-29 18:28:13,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:28:13,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647980051] [2023-08-29 18:28:13,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647980051] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:28:13,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331759365] [2023-08-29 18:28:13,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:28:13,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:28:13,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:28:13,150 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 18:28:13,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-29 18:28:13,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:28:13,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 18:28:13,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:28:13,214 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-29 18:28:13,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:28:13,226 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-29 18:28:13,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331759365] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:28:13,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 18:28:13,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 18:28:13,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478376065] [2023-08-29 18:28:13,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 18:28:13,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 18:28:13,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:28:13,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 18:28:13,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 18:28:13,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 587 [2023-08-29 18:28:13,240 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 164 transitions, 362 flow. Second operand has 7 states, 7 states have (on average 315.7142857142857) internal successors, (2210), 7 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:13,241 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:28:13,241 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 587 [2023-08-29 18:28:13,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:28:15,754 INFO L130 PetriNetUnfolder]: 14723/35112 cut-off events. [2023-08-29 18:28:15,755 INFO L131 PetriNetUnfolder]: For 855/870 co-relation queries the response was YES. [2023-08-29 18:28:15,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57183 conditions, 35112 events. 14723/35112 cut-off events. For 855/870 co-relation queries the response was YES. Maximal size of possible extension queue 900. Compared 380131 event pairs, 13600 based on Foata normal form. 3/32440 useless extension candidates. Maximal degree in co-relation 57155. Up to 21242 conditions per place. [2023-08-29 18:28:15,888 INFO L137 encePairwiseOnDemand]: 584/587 looper letters, 63 selfloop transitions, 5 changer transitions 0/167 dead transitions. [2023-08-29 18:28:15,888 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 167 transitions, 510 flow [2023-08-29 18:28:15,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 18:28:15,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 18:28:15,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1954 transitions. [2023-08-29 18:28:15,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5547984099943214 [2023-08-29 18:28:15,892 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1954 transitions. [2023-08-29 18:28:15,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1954 transitions. [2023-08-29 18:28:15,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:28:15,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1954 transitions. [2023-08-29 18:28:15,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 325.6666666666667) internal successors, (1954), 6 states have internal predecessors, (1954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:15,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 587.0) internal successors, (4109), 7 states have internal predecessors, (4109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:15,899 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 587.0) internal successors, (4109), 7 states have internal predecessors, (4109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:15,899 INFO L175 Difference]: Start difference. First operand has 166 places, 164 transitions, 362 flow. Second operand 6 states and 1954 transitions. [2023-08-29 18:28:15,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 167 transitions, 510 flow [2023-08-29 18:28:15,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 167 transitions, 508 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 18:28:15,902 INFO L231 Difference]: Finished difference. Result has 173 places, 167 transitions, 396 flow [2023-08-29 18:28:15,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=396, PETRI_PLACES=173, PETRI_TRANSITIONS=167} [2023-08-29 18:28:15,903 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, 12 predicate places. [2023-08-29 18:28:15,903 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 167 transitions, 396 flow [2023-08-29 18:28:15,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 315.7142857142857) internal successors, (2210), 7 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:15,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:28:15,904 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1] [2023-08-29 18:28:15,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-29 18:28:16,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:28:16,109 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 18:28:16,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:28:16,109 INFO L85 PathProgramCache]: Analyzing trace with hash -806908029, now seen corresponding path program 2 times [2023-08-29 18:28:16,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:28:16,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647170024] [2023-08-29 18:28:16,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:28:16,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:28:16,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:28:16,169 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-29 18:28:16,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:28:16,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647170024] [2023-08-29 18:28:16,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647170024] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:28:16,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866217979] [2023-08-29 18:28:16,170 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 18:28:16,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:28:16,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:28:16,186 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 18:28:16,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-29 18:28:16,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 18:28:16,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 18:28:16,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 18:28:16,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:28:16,266 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-29 18:28:16,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:28:16,306 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-29 18:28:16,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866217979] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:28:16,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 18:28:16,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-29 18:28:16,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453866416] [2023-08-29 18:28:16,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 18:28:16,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-29 18:28:16,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:28:16,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-29 18:28:16,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-29 18:28:16,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 587 [2023-08-29 18:28:16,336 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 167 transitions, 396 flow. Second operand has 13 states, 13 states have (on average 315.38461538461536) internal successors, (4100), 13 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:16,337 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:28:16,337 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 587 [2023-08-29 18:28:16,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:28:18,953 INFO L130 PetriNetUnfolder]: 14723/35118 cut-off events. [2023-08-29 18:28:18,956 INFO L131 PetriNetUnfolder]: For 889/904 co-relation queries the response was YES. [2023-08-29 18:28:19,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57204 conditions, 35118 events. 14723/35118 cut-off events. For 889/904 co-relation queries the response was YES. Maximal size of possible extension queue 900. Compared 380222 event pairs, 13600 based on Foata normal form. 6/32449 useless extension candidates. Maximal degree in co-relation 57144. Up to 21242 conditions per place. [2023-08-29 18:28:19,078 INFO L137 encePairwiseOnDemand]: 584/587 looper letters, 63 selfloop transitions, 11 changer transitions 0/173 dead transitions. [2023-08-29 18:28:19,078 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 173 transitions, 580 flow [2023-08-29 18:28:19,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 18:28:19,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 18:28:19,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3847 transitions. [2023-08-29 18:28:19,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5461385576377058 [2023-08-29 18:28:19,084 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3847 transitions. [2023-08-29 18:28:19,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3847 transitions. [2023-08-29 18:28:19,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:28:19,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3847 transitions. [2023-08-29 18:28:19,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 320.5833333333333) internal successors, (3847), 12 states have internal predecessors, (3847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:19,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 587.0) internal successors, (7631), 13 states have internal predecessors, (7631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:19,097 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 587.0) internal successors, (7631), 13 states have internal predecessors, (7631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:19,097 INFO L175 Difference]: Start difference. First operand has 173 places, 167 transitions, 396 flow. Second operand 12 states and 3847 transitions. [2023-08-29 18:28:19,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 173 transitions, 580 flow [2023-08-29 18:28:19,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 173 transitions, 566 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-29 18:28:19,100 INFO L231 Difference]: Finished difference. Result has 189 places, 173 transitions, 466 flow [2023-08-29 18:28:19,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=466, PETRI_PLACES=189, PETRI_TRANSITIONS=173} [2023-08-29 18:28:19,101 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, 28 predicate places. [2023-08-29 18:28:19,101 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 173 transitions, 466 flow [2023-08-29 18:28:19,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 315.38461538461536) internal successors, (4100), 13 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:19,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:28:19,103 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2023-08-29 18:28:19,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-29 18:28:19,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:28:19,308 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 18:28:19,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:28:19,308 INFO L85 PathProgramCache]: Analyzing trace with hash 48943939, now seen corresponding path program 3 times [2023-08-29 18:28:19,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:28:19,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773807246] [2023-08-29 18:28:19,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:28:19,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:28:19,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:28:19,334 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 18:28:19,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:28:19,358 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 18:28:19,358 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 18:28:19,359 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-08-29 18:28:19,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-08-29 18:28:19,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-08-29 18:28:19,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-08-29 18:28:19,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-08-29 18:28:19,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-08-29 18:28:19,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-08-29 18:28:19,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-08-29 18:28:19,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-08-29 18:28:19,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-08-29 18:28:19,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-08-29 18:28:19,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-08-29 18:28:19,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-08-29 18:28:19,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-08-29 18:28:19,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-08-29 18:28:19,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-08-29 18:28:19,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-08-29 18:28:19,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-08-29 18:28:19,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-08-29 18:28:19,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-08-29 18:28:19,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-08-29 18:28:19,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-08-29 18:28:19,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 18:28:19,363 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2023-08-29 18:28:19,363 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 18:28:19,363 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-29 18:28:19,402 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-29 18:28:19,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 416 places, 468 transitions, 966 flow [2023-08-29 18:28:19,499 INFO L130 PetriNetUnfolder]: 110/898 cut-off events. [2023-08-29 18:28:19,499 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-29 18:28:19,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 926 conditions, 898 events. 110/898 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 4965 event pairs, 1 based on Foata normal form. 0/741 useless extension candidates. Maximal degree in co-relation 621. Up to 16 conditions per place. [2023-08-29 18:28:19,512 INFO L82 GeneralOperation]: Start removeDead. Operand has 416 places, 468 transitions, 966 flow [2023-08-29 18:28:19,517 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 416 places, 468 transitions, 966 flow [2023-08-29 18:28:19,517 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:28:19,517 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 416 places, 468 transitions, 966 flow [2023-08-29 18:28:19,517 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 416 places, 468 transitions, 966 flow [2023-08-29 18:28:19,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 416 places, 468 transitions, 966 flow [2023-08-29 18:28:19,612 INFO L130 PetriNetUnfolder]: 110/898 cut-off events. [2023-08-29 18:28:19,612 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-29 18:28:19,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 926 conditions, 898 events. 110/898 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 4965 event pairs, 1 based on Foata normal form. 0/741 useless extension candidates. Maximal degree in co-relation 621. Up to 16 conditions per place. [2023-08-29 18:28:19,654 INFO L119 LiptonReduction]: Number of co-enabled transitions 135138 [2023-08-29 18:28:22,838 INFO L134 LiptonReduction]: Checked pairs total: 496005 [2023-08-29 18:28:22,838 INFO L136 LiptonReduction]: Total number of compositions: 276 [2023-08-29 18:28:22,840 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:28:22,840 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;@4339da19, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:28:22,840 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2023-08-29 18:28:22,843 INFO L130 PetriNetUnfolder]: 14/73 cut-off events. [2023-08-29 18:28:22,844 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:28:22,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:28:22,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:28:22,844 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 18:28:22,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:28:22,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1281418193, now seen corresponding path program 1 times [2023-08-29 18:28:22,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:28:22,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041201745] [2023-08-29 18:28:22,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:28:22,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:28:22,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:28:22,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:28:22,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:28:22,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041201745] [2023-08-29 18:28:22,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041201745] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:28:22,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:28:22,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:28:22,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176527972] [2023-08-29 18:28:22,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:28:22,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:28:22,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:28:22,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:28:22,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:28:22,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 403 out of 744 [2023-08-29 18:28:22,899 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 252 transitions, 534 flow. Second operand has 3 states, 3 states have (on average 404.6666666666667) internal successors, (1214), 3 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:22,899 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:28:22,899 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 403 of 744 [2023-08-29 18:28:22,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:29:19,947 INFO L130 PetriNetUnfolder]: 402738/765384 cut-off events. [2023-08-29 18:29:19,947 INFO L131 PetriNetUnfolder]: For 5313/5871 co-relation queries the response was YES. [2023-08-29 18:29:22,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1284542 conditions, 765384 events. 402738/765384 cut-off events. For 5313/5871 co-relation queries the response was YES. Maximal size of possible extension queue 15602. Compared 10015239 event pairs, 377214 based on Foata normal form. 86989/790663 useless extension candidates. Maximal degree in co-relation 297193. Up to 516526 conditions per place. [2023-08-29 18:29:25,169 INFO L137 encePairwiseOnDemand]: 700/744 looper letters, 81 selfloop transitions, 2 changer transitions 0/212 dead transitions. [2023-08-29 18:29:25,169 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 212 transitions, 620 flow [2023-08-29 18:29:25,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:29:25,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:29:25,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1334 transitions. [2023-08-29 18:29:25,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5976702508960573 [2023-08-29 18:29:25,172 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1334 transitions. [2023-08-29 18:29:25,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1334 transitions. [2023-08-29 18:29:25,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:29:25,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1334 transitions. [2023-08-29 18:29:25,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 444.6666666666667) internal successors, (1334), 3 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:29:25,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 744.0) internal successors, (2976), 4 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:29:25,178 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 744.0) internal successors, (2976), 4 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:29:25,178 INFO L175 Difference]: Start difference. First operand has 210 places, 252 transitions, 534 flow. Second operand 3 states and 1334 transitions. [2023-08-29 18:29:25,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 212 transitions, 620 flow [2023-08-29 18:29:25,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 212 transitions, 620 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:29:25,182 INFO L231 Difference]: Finished difference. Result has 213 places, 212 transitions, 464 flow [2023-08-29 18:29:25,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=744, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=464, PETRI_PLACES=213, PETRI_TRANSITIONS=212} [2023-08-29 18:29:25,184 INFO L281 CegarLoopForPetriNet]: 210 programPoint places, 3 predicate places. [2023-08-29 18:29:25,184 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 212 transitions, 464 flow [2023-08-29 18:29:25,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 404.6666666666667) internal successors, (1214), 3 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:29:25,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:29:25,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:29:25,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 18:29:25,185 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 18:29:25,185 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:29:25,185 INFO L85 PathProgramCache]: Analyzing trace with hash 553210204, now seen corresponding path program 1 times [2023-08-29 18:29:25,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:29:25,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991714061] [2023-08-29 18:29:25,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:29:25,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:29:25,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:29:25,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:29:25,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:29:25,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991714061] [2023-08-29 18:29:25,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991714061] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:29:25,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346330103] [2023-08-29 18:29:25,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:29:25,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:29:25,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:29:25,211 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 18:29:25,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-29 18:29:25,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:29:25,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-29 18:29:25,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:29:25,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 18:29:25,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 18:29:25,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346330103] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:29:25,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 18:29:25,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-29 18:29:25,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97106232] [2023-08-29 18:29:25,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:29:25,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:29:25,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:29:25,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:29:25,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 18:29:25,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 403 out of 744 [2023-08-29 18:29:25,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 212 transitions, 464 flow. Second operand has 3 states, 3 states have (on average 405.0) internal successors, (1215), 3 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:29:25,295 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:29:25,295 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 403 of 744 [2023-08-29 18:29:25,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:30:22,006 INFO L130 PetriNetUnfolder]: 397598/763072 cut-off events. [2023-08-29 18:30:22,006 INFO L131 PetriNetUnfolder]: For 5779/6691 co-relation queries the response was YES. [2023-08-29 18:30:25,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1282460 conditions, 763072 events. 397598/763072 cut-off events. For 5779/6691 co-relation queries the response was YES. Maximal size of possible extension queue 15637. Compared 10108057 event pairs, 247402 based on Foata normal form. 0/699853 useless extension candidates. Maximal degree in co-relation 1282446. Up to 516490 conditions per place. [2023-08-29 18:30:27,839 INFO L137 encePairwiseOnDemand]: 741/744 looper letters, 100 selfloop transitions, 2 changer transitions 0/231 dead transitions. [2023-08-29 18:30:27,839 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 231 transitions, 706 flow [2023-08-29 18:30:27,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:30:27,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:30:27,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1311 transitions. [2023-08-29 18:30:27,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5873655913978495 [2023-08-29 18:30:27,860 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1311 transitions. [2023-08-29 18:30:27,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1311 transitions. [2023-08-29 18:30:27,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:30:27,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1311 transitions. [2023-08-29 18:30:27,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 437.0) internal successors, (1311), 3 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:30:27,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 744.0) internal successors, (2976), 4 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:30:27,864 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 744.0) internal successors, (2976), 4 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:30:27,864 INFO L175 Difference]: Start difference. First operand has 213 places, 212 transitions, 464 flow. Second operand 3 states and 1311 transitions. [2023-08-29 18:30:27,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 231 transitions, 706 flow [2023-08-29 18:30:27,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 231 transitions, 702 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-29 18:30:27,876 INFO L231 Difference]: Finished difference. Result has 215 places, 213 transitions, 472 flow [2023-08-29 18:30:27,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=744, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=472, PETRI_PLACES=215, PETRI_TRANSITIONS=213} [2023-08-29 18:30:27,877 INFO L281 CegarLoopForPetriNet]: 210 programPoint places, 5 predicate places. [2023-08-29 18:30:27,877 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 213 transitions, 472 flow [2023-08-29 18:30:27,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 405.0) internal successors, (1215), 3 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:30:27,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:30:27,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:30:27,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-29 18:30:28,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:30:28,089 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 18:30:28,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:30:28,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1707501321, now seen corresponding path program 1 times [2023-08-29 18:30:28,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:30:28,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734575324] [2023-08-29 18:30:28,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:30:28,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:30:28,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:30:28,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:30:28,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:30:28,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734575324] [2023-08-29 18:30:28,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734575324] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:30:28,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190844738] [2023-08-29 18:30:28,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:30:28,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:30:28,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:30:28,116 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 18:30:28,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-29 18:30:28,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:30:28,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 18:30:28,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:30:28,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:30:28,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:30:28,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:30:28,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190844738] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:30:28,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 18:30:28,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 18:30:28,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384741590] [2023-08-29 18:30:28,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 18:30:28,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 18:30:28,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:30:28,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 18:30:28,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 18:30:28,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 402 out of 744 [2023-08-29 18:30:28,233 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 213 transitions, 472 flow. Second operand has 7 states, 7 states have (on average 403.85714285714283) internal successors, (2827), 7 states have internal predecessors, (2827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:30:28,233 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:30:28,233 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 402 of 744 [2023-08-29 18:30:28,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:31:27,449 INFO L130 PetriNetUnfolder]: 403391/766306 cut-off events. [2023-08-29 18:31:27,450 INFO L131 PetriNetUnfolder]: For 17816/18802 co-relation queries the response was YES. [2023-08-29 18:31:30,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1297826 conditions, 766306 events. 403391/766306 cut-off events. For 17816/18802 co-relation queries the response was YES. Maximal size of possible extension queue 15690. Compared 10038197 event pairs, 377214 based on Foata normal form. 3/709184 useless extension candidates. Maximal degree in co-relation 1297797. Up to 516509 conditions per place. [2023-08-29 18:31:33,165 INFO L137 encePairwiseOnDemand]: 741/744 looper letters, 82 selfloop transitions, 5 changer transitions 0/216 dead transitions. [2023-08-29 18:31:33,166 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 216 transitions, 658 flow [2023-08-29 18:31:33,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 18:31:33,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 18:31:33,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2501 transitions. [2023-08-29 18:31:33,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5602598566308243 [2023-08-29 18:31:33,169 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2501 transitions. [2023-08-29 18:31:33,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2501 transitions. [2023-08-29 18:31:33,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:31:33,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2501 transitions. [2023-08-29 18:31:33,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 416.8333333333333) internal successors, (2501), 6 states have internal predecessors, (2501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:31:33,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 744.0) internal successors, (5208), 7 states have internal predecessors, (5208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:31:33,193 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 744.0) internal successors, (5208), 7 states have internal predecessors, (5208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:31:33,193 INFO L175 Difference]: Start difference. First operand has 215 places, 213 transitions, 472 flow. Second operand 6 states and 2501 transitions. [2023-08-29 18:31:33,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 216 transitions, 658 flow [2023-08-29 18:31:33,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 216 transitions, 656 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 18:31:33,206 INFO L231 Difference]: Finished difference. Result has 222 places, 216 transitions, 506 flow [2023-08-29 18:31:33,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=744, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=506, PETRI_PLACES=222, PETRI_TRANSITIONS=216} [2023-08-29 18:31:33,208 INFO L281 CegarLoopForPetriNet]: 210 programPoint places, 12 predicate places. [2023-08-29 18:31:33,208 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 216 transitions, 506 flow [2023-08-29 18:31:33,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 403.85714285714283) internal successors, (2827), 7 states have internal predecessors, (2827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:31:33,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:31:33,209 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:31:33,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-29 18:31:33,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:31:33,413 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 18:31:33,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:31:33,413 INFO L85 PathProgramCache]: Analyzing trace with hash 2146690610, now seen corresponding path program 2 times [2023-08-29 18:31:33,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:31:33,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645454628] [2023-08-29 18:31:33,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:31:33,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:31:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:31:33,463 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:31:33,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:31:33,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645454628] [2023-08-29 18:31:33,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645454628] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:31:33,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557159110] [2023-08-29 18:31:33,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 18:31:33,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:31:33,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:31:33,487 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 18:31:33,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-29 18:31:33,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 18:31:33,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 18:31:33,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-29 18:31:33,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:31:33,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-29 18:31:33,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-08-29 18:31:33,653 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 18:31:33,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-08-29 18:31:33,681 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 18:31:33,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2023-08-29 18:31:33,699 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-29 18:31:33,699 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 18:31:33,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557159110] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:31:33,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 18:31:33,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-08-29 18:31:33,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326300557] [2023-08-29 18:31:33,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:31:33,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 18:31:33,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:31:33,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 18:31:33,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-08-29 18:31:34,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 744 [2023-08-29 18:31:34,445 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 216 transitions, 506 flow. Second operand has 6 states, 6 states have (on average 355.1666666666667) internal successors, (2131), 6 states have internal predecessors, (2131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:31:34,445 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:31:34,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 744 [2023-08-29 18:31:34,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand