./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 AFTER --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 AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 02:59:37,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 02:59:37,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 02:59:37,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 02:59:37,559 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 02:59:37,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 02:59:37,564 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 02:59:37,567 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 02:59:37,569 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 02:59:37,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 02:59:37,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 02:59:37,577 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 02:59:37,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 02:59:37,580 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 02:59:37,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 02:59:37,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 02:59:37,588 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 02:59:37,589 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 02:59:37,591 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 02:59:37,596 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 02:59:37,597 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 02:59:37,599 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 02:59:37,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 02:59:37,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 02:59:37,607 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 02:59:37,608 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 02:59:37,608 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 02:59:37,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 02:59:37,611 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 02:59:37,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 02:59:37,612 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 02:59:37,618 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 02:59:37,620 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 02:59:37,621 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 02:59:37,622 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 02:59:37,622 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 02:59:37,622 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 02:59:37,623 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 02:59:37,623 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 02:59:37,624 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 02:59:37,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 02:59:37,626 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 02:59:37,660 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 02:59:37,660 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 02:59:37,662 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 02:59:37,662 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 02:59:37,663 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 02:59:37,663 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 02:59:37,663 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 02:59:37,664 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 02:59:37,664 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 02:59:37,664 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 02:59:37,665 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 02:59:37,665 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 02:59:37,665 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 02:59:37,665 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 02:59:37,666 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 02:59:37,666 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 02:59:37,666 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 02:59:37,666 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 02:59:37,666 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 02:59:37,667 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 02:59:37,667 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 02:59:37,667 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 02:59:37,667 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 02:59:37,667 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 02:59:37,667 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 02:59:37,668 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 02:59:37,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 02:59:37,668 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 02:59:37,668 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 02:59:37,669 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 02:59:37,669 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 02:59:37,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 02:59:37,669 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 02:59:37,669 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 02:59:37,670 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 02:59:37,670 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 02:59:37,670 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 02:59:37,670 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c0354ee6107efc04d15102ecf9eef73430e38e14b70f16419cd07cd733fd0df Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 02:59:38,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 02:59:38,029 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 02:59:38,032 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 02:59:38,033 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 02:59:38,033 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 02:59:38,035 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_75-tricky_address2_racefree.i [2023-08-29 02:59:39,285 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 02:59:39,621 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 02:59:39,621 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_75-tricky_address2_racefree.i [2023-08-29 02:59:39,639 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21ca065df/beaf4e0b22f340bf8d806d37050068a8/FLAG8e8575abe [2023-08-29 02:59:39,656 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21ca065df/beaf4e0b22f340bf8d806d37050068a8 [2023-08-29 02:59:39,659 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 02:59:39,661 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 02:59:39,663 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 02:59:39,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 02:59:39,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 02:59:39,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 02:59:39" (1/1) ... [2023-08-29 02:59:39,668 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68f6f38e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:59:39, skipping insertion in model container [2023-08-29 02:59:39,668 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 02:59:39" (1/1) ... [2023-08-29 02:59:39,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 02:59:39,718 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 02:59:40,080 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 02:59:40,106 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 02:59:40,122 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 02:59:40,163 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 02:59:40,189 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 02:59:40,258 INFO L208 MainTranslator]: Completed translation [2023-08-29 02:59:40,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:59:40 WrapperNode [2023-08-29 02:59:40,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 02:59:40,261 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 02:59:40,261 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 02:59:40,261 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 02:59:40,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:59:40" (1/1) ... [2023-08-29 02:59:40,289 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:59:40" (1/1) ... [2023-08-29 02:59:40,323 INFO L138 Inliner]: procedures = 270, calls = 41, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 253 [2023-08-29 02:59:40,324 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 02:59:40,324 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 02:59:40,325 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 02:59:40,325 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 02:59:40,336 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:59:40" (1/1) ... [2023-08-29 02:59:40,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:59:40" (1/1) ... [2023-08-29 02:59:40,345 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:59:40" (1/1) ... [2023-08-29 02:59:40,345 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:59:40" (1/1) ... [2023-08-29 02:59:40,362 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:59:40" (1/1) ... [2023-08-29 02:59:40,367 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:59:40" (1/1) ... [2023-08-29 02:59:40,369 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:59:40" (1/1) ... [2023-08-29 02:59:40,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:59:40" (1/1) ... [2023-08-29 02:59:40,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 02:59:40,376 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 02:59:40,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 02:59:40,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 02:59:40,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:59:40" (1/1) ... [2023-08-29 02:59:40,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 02:59:40,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:59:40,434 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 02:59:40,464 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 02:59:40,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 02:59:40,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 02:59:40,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 02:59:40,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 02:59:40,481 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 02:59:40,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 02:59:40,481 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 02:59:40,481 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 02:59:40,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 02:59:40,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 02:59:40,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 02:59:40,483 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 02:59:40,671 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 02:59:40,673 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 02:59:41,113 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 02:59:41,133 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 02:59:41,133 INFO L302 CfgBuilder]: Removed 23 assume(true) statements. [2023-08-29 02:59:41,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 02:59:41 BoogieIcfgContainer [2023-08-29 02:59:41,137 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 02:59:41,146 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 02:59:41,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 02:59:41,149 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 02:59:41,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 02:59:39" (1/3) ... [2023-08-29 02:59:41,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11d11859 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 02:59:41, skipping insertion in model container [2023-08-29 02:59:41,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:59:40" (2/3) ... [2023-08-29 02:59:41,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11d11859 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 02:59:41, skipping insertion in model container [2023-08-29 02:59:41,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 02:59:41" (3/3) ... [2023-08-29 02:59:41,151 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_75-tricky_address2_racefree.i [2023-08-29 02:59:41,159 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 02:59:41,167 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 02:59:41,167 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-08-29 02:59:41,168 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 02:59:41,314 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-29 02:59:41,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 234 places, 262 transitions, 532 flow [2023-08-29 02:59:41,519 INFO L130 PetriNetUnfolder]: 45/371 cut-off events. [2023-08-29 02:59:41,520 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 02:59:41,529 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 02:59:41,530 INFO L82 GeneralOperation]: Start removeDead. Operand has 234 places, 262 transitions, 532 flow [2023-08-29 02:59:41,540 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 234 places, 262 transitions, 532 flow [2023-08-29 02:59:41,545 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:59:41,559 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 234 places, 262 transitions, 532 flow [2023-08-29 02:59:41,563 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 234 places, 262 transitions, 532 flow [2023-08-29 02:59:41,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 234 places, 262 transitions, 532 flow [2023-08-29 02:59:41,633 INFO L130 PetriNetUnfolder]: 45/371 cut-off events. [2023-08-29 02:59:41,634 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 02:59:41,640 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 02:59:41,652 INFO L119 LiptonReduction]: Number of co-enabled transitions 23230 [2023-08-29 02:59:44,567 INFO L134 LiptonReduction]: Checked pairs total: 83563 [2023-08-29 02:59:44,568 INFO L136 LiptonReduction]: Total number of compositions: 160 [2023-08-29 02:59:44,586 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 02:59:44,594 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;@1d659884, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:59:44,594 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-29 02:59:44,602 INFO L130 PetriNetUnfolder]: 14/76 cut-off events. [2023-08-29 02:59:44,602 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:59:44,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:59:44,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:59:44,604 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr4ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-08-29 02:59:44,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:59:44,609 INFO L85 PathProgramCache]: Analyzing trace with hash -754118931, now seen corresponding path program 1 times [2023-08-29 02:59:44,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:59:44,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788222001] [2023-08-29 02:59:44,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:59:44,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:59:44,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:59:44,863 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 02:59:44,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:59:44,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788222001] [2023-08-29 02:59:44,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788222001] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:59:44,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:59:44,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:59:44,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938295483] [2023-08-29 02:59:44,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:59:44,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:59:44,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:59:44,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:59:44,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:59:44,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 422 [2023-08-29 02:59:44,927 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 02:59:44,927 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:59:44,927 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 422 [2023-08-29 02:59:44,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:59:45,171 INFO L130 PetriNetUnfolder]: 399/1527 cut-off events. [2023-08-29 02:59:45,172 INFO L131 PetriNetUnfolder]: For 3/5 co-relation queries the response was YES. [2023-08-29 02:59:45,174 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 02:59:45,180 INFO L137 encePairwiseOnDemand]: 399/422 looper letters, 43 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2023-08-29 02:59:45,180 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 112 transitions, 322 flow [2023-08-29 02:59:45,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:59:45,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:59:45,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 747 transitions. [2023-08-29 02:59:45,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.590047393364929 [2023-08-29 02:59:45,201 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 747 transitions. [2023-08-29 02:59:45,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 747 transitions. [2023-08-29 02:59:45,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:59:45,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 747 transitions. [2023-08-29 02:59:45,213 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 02:59:45,219 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 02:59:45,221 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 02:59:45,222 INFO L175 Difference]: Start difference. First operand has 110 places, 131 transitions, 270 flow. Second operand 3 states and 747 transitions. [2023-08-29 02:59:45,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 112 transitions, 322 flow [2023-08-29 02:59:45,227 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 02:59:45,230 INFO L231 Difference]: Finished difference. Result has 113 places, 112 transitions, 242 flow [2023-08-29 02:59:45,232 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 02:59:45,235 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 3 predicate places. [2023-08-29 02:59:45,235 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 112 transitions, 242 flow [2023-08-29 02:59:45,236 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 02:59:45,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:59:45,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:59:45,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 02:59:45,238 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr4ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-08-29 02:59:45,245 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:59:45,246 INFO L85 PathProgramCache]: Analyzing trace with hash -233007834, now seen corresponding path program 1 times [2023-08-29 02:59:45,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:59:45,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502721478] [2023-08-29 02:59:45,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:59:45,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:59:45,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:59:45,372 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 02:59:45,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:59:45,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502721478] [2023-08-29 02:59:45,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502721478] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:59:45,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055186007] [2023-08-29 02:59:45,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:59:45,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:59:45,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:59:45,381 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 02:59:45,406 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 02:59:45,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:59:45,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-29 02:59:45,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:59:45,491 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 02:59:45,491 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 02:59:45,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055186007] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:59:45,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 02:59:45,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-29 02:59:45,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571426023] [2023-08-29 02:59:45,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:59:45,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:59:45,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:59:45,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:59:45,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 02:59:45,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 422 [2023-08-29 02:59:45,511 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 112 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 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 02:59:45,511 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:59:45,511 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 422 [2023-08-29 02:59:45,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:59:45,795 INFO L130 PetriNetUnfolder]: 377/1464 cut-off events. [2023-08-29 02:59:45,795 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 02:59:45,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2257 conditions, 1464 events. 377/1464 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 10597 event pairs, 0 based on Foata normal form. 0/1304 useless extension candidates. Maximal degree in co-relation 2245. Up to 743 conditions per place. [2023-08-29 02:59:45,803 INFO L137 encePairwiseOnDemand]: 419/422 looper letters, 61 selfloop transitions, 2 changer transitions 0/130 dead transitions. [2023-08-29 02:59:45,804 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 130 transitions, 404 flow [2023-08-29 02:59:45,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:59:45,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:59:45,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 744 transitions. [2023-08-29 02:59:45,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5876777251184834 [2023-08-29 02:59:45,806 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 744 transitions. [2023-08-29 02:59:45,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 744 transitions. [2023-08-29 02:59:45,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:59:45,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 744 transitions. [2023-08-29 02:59:45,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 248.0) internal successors, (744), 3 states have internal predecessors, (744), 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 02:59:45,811 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 02:59:45,812 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 02:59:45,812 INFO L175 Difference]: Start difference. First operand has 113 places, 112 transitions, 242 flow. Second operand 3 states and 744 transitions. [2023-08-29 02:59:45,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 130 transitions, 404 flow [2023-08-29 02:59:45,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 130 transitions, 400 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-29 02:59:45,819 INFO L231 Difference]: Finished difference. Result has 115 places, 112 transitions, 246 flow [2023-08-29 02:59:45,819 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=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=115, PETRI_TRANSITIONS=112} [2023-08-29 02:59:45,820 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 5 predicate places. [2023-08-29 02:59:45,820 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 112 transitions, 246 flow [2023-08-29 02:59:45,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 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 02:59:45,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:59:45,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:59:45,829 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-29 02:59:46,026 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 02:59:46,026 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr4ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-08-29 02:59:46,027 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:59:46,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1029287554, now seen corresponding path program 1 times [2023-08-29 02:59:46,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:59:46,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150790044] [2023-08-29 02:59:46,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:59:46,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:59:46,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:59:46,116 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 02:59:46,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:59:46,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150790044] [2023-08-29 02:59:46,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150790044] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:59:46,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116993661] [2023-08-29 02:59:46,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:59:46,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:59:46,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:59:46,118 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 02:59:46,121 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 02:59:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:59:46,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 02:59:46,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:59:46,225 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 02:59:46,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 02:59:46,241 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 02:59:46,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116993661] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 02:59:46,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 02:59:46,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 02:59:46,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989739942] [2023-08-29 02:59:46,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 02:59:46,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 02:59:46,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:59:46,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 02:59:46,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 02:59:46,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 422 [2023-08-29 02:59:46,274 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 112 transitions, 246 flow. Second operand has 7 states, 7 states have (on average 227.85714285714286) internal successors, (1595), 7 states have internal predecessors, (1595), 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 02:59:46,274 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:59:46,274 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 422 [2023-08-29 02:59:46,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:59:46,513 INFO L130 PetriNetUnfolder]: 397/1511 cut-off events. [2023-08-29 02:59:46,513 INFO L131 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2023-08-29 02:59:46,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2347 conditions, 1511 events. 397/1511 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 10554 event pairs, 357 based on Foata normal form. 3/1385 useless extension candidates. Maximal degree in co-relation 2320. Up to 762 conditions per place. [2023-08-29 02:59:46,520 INFO L137 encePairwiseOnDemand]: 419/422 looper letters, 43 selfloop transitions, 5 changer transitions 0/115 dead transitions. [2023-08-29 02:59:46,520 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 115 transitions, 354 flow [2023-08-29 02:59:46,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:59:46,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:59:46,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1407 transitions. [2023-08-29 02:59:46,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5556872037914692 [2023-08-29 02:59:46,525 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1407 transitions. [2023-08-29 02:59:46,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1407 transitions. [2023-08-29 02:59:46,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:59:46,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1407 transitions. [2023-08-29 02:59:46,529 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 02:59:46,534 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 02:59:46,535 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 02:59:46,535 INFO L175 Difference]: Start difference. First operand has 115 places, 112 transitions, 246 flow. Second operand 6 states and 1407 transitions. [2023-08-29 02:59:46,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 115 transitions, 354 flow [2023-08-29 02:59:46,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 115 transitions, 350 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 02:59:46,541 INFO L231 Difference]: Finished difference. Result has 121 places, 115 transitions, 278 flow [2023-08-29 02:59:46,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=113, 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=278, PETRI_PLACES=121, PETRI_TRANSITIONS=115} [2023-08-29 02:59:46,543 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 11 predicate places. [2023-08-29 02:59:46,544 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 115 transitions, 278 flow [2023-08-29 02:59:46,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 227.85714285714286) internal successors, (1595), 7 states have internal predecessors, (1595), 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 02:59:46,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:59:46,546 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:59:46,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-29 02:59:46,750 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 02:59:46,751 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr4ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-08-29 02:59:46,751 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:59:46,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1428788233, now seen corresponding path program 2 times [2023-08-29 02:59:46,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:59:46,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396294062] [2023-08-29 02:59:46,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:59:46,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:59:46,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:59:46,870 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 02:59:46,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:59:46,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396294062] [2023-08-29 02:59:46,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396294062] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:59:46,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73175090] [2023-08-29 02:59:46,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 02:59:46,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:59:46,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:59:46,872 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 02:59:46,900 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 02:59:46,960 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 02:59:46,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 02:59:46,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-29 02:59:46,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:59:46,991 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 02:59:47,008 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 02:59:47,033 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 02:59:47,034 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 02:59:47,074 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 02:59:47,075 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 02:59:47,109 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 02:59:47,109 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 02:59:47,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73175090] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:59:47,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 02:59:47,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-08-29 02:59:47,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402086827] [2023-08-29 02:59:47,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:59:47,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:59:47,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:59:47,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:59:47,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-08-29 02:59:47,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 422 [2023-08-29 02:59:47,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 115 transitions, 278 flow. Second operand has 6 states, 6 states have (on average 195.16666666666666) internal successors, (1171), 6 states have internal predecessors, (1171), 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 02:59:47,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:59:47,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 422 [2023-08-29 02:59:47,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:59:48,313 INFO L130 PetriNetUnfolder]: 1851/5174 cut-off events. [2023-08-29 02:59:48,313 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2023-08-29 02:59:48,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9129 conditions, 5174 events. 1851/5174 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 40895 event pairs, 677 based on Foata normal form. 0/4656 useless extension candidates. Maximal degree in co-relation 9094. Up to 1836 conditions per place. [2023-08-29 02:59:48,339 INFO L137 encePairwiseOnDemand]: 394/422 looper letters, 199 selfloop transitions, 52 changer transitions 0/290 dead transitions. [2023-08-29 02:59:48,339 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 290 transitions, 1154 flow [2023-08-29 02:59:48,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:59:48,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:59:48,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1408 transitions. [2023-08-29 02:59:48,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5560821484992101 [2023-08-29 02:59:48,343 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1408 transitions. [2023-08-29 02:59:48,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1408 transitions. [2023-08-29 02:59:48,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:59:48,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1408 transitions. [2023-08-29 02:59:48,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 234.66666666666666) internal successors, (1408), 6 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:59:48,352 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 02:59:48,353 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 02:59:48,354 INFO L175 Difference]: Start difference. First operand has 121 places, 115 transitions, 278 flow. Second operand 6 states and 1408 transitions. [2023-08-29 02:59:48,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 290 transitions, 1154 flow [2023-08-29 02:59:48,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 290 transitions, 1140 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-29 02:59:48,364 INFO L231 Difference]: Finished difference. Result has 129 places, 166 transitions, 610 flow [2023-08-29 02:59:48,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=610, PETRI_PLACES=129, PETRI_TRANSITIONS=166} [2023-08-29 02:59:48,367 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 19 predicate places. [2023-08-29 02:59:48,367 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 166 transitions, 610 flow [2023-08-29 02:59:48,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 195.16666666666666) internal successors, (1171), 6 states have internal predecessors, (1171), 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 02:59:48,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:59:48,368 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:59:48,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-29 02:59:48,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:59:48,574 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr4ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-08-29 02:59:48,574 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:59:48,574 INFO L85 PathProgramCache]: Analyzing trace with hash -620759637, now seen corresponding path program 1 times [2023-08-29 02:59:48,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:59:48,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80295365] [2023-08-29 02:59:48,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:59:48,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:59:48,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:59:48,661 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-29 02:59:48,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:59:48,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80295365] [2023-08-29 02:59:48,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80295365] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:59:48,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070030274] [2023-08-29 02:59:48,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:59:48,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:59:48,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:59:48,667 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 02:59:48,670 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 02:59:48,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:59:48,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 02:59:48,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:59:48,788 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 02:59:48,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 02:59:48,853 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 02:59:48,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070030274] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 02:59:48,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 02:59:48,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 14 [2023-08-29 02:59:48,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119194447] [2023-08-29 02:59:48,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 02:59:48,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-29 02:59:48,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:59:48,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-29 02:59:48,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-08-29 02:59:48,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 422 [2023-08-29 02:59:48,910 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 166 transitions, 610 flow. Second operand has 14 states, 14 states have (on average 224.78571428571428) internal successors, (3147), 14 states have internal predecessors, (3147), 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 02:59:48,911 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:59:48,911 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 422 [2023-08-29 02:59:48,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:59:49,008 INFO L130 PetriNetUnfolder]: 37/153 cut-off events. [2023-08-29 02:59:49,008 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2023-08-29 02:59:49,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375 conditions, 153 events. 37/153 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 379 event pairs, 0 based on Foata normal form. 25/169 useless extension candidates. Maximal degree in co-relation 318. Up to 74 conditions per place. [2023-08-29 02:59:49,009 INFO L137 encePairwiseOnDemand]: 417/422 looper letters, 24 selfloop transitions, 13 changer transitions 20/79 dead transitions. [2023-08-29 02:59:49,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 79 transitions, 379 flow [2023-08-29 02:59:49,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-29 02:59:49,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-29 02:59:49,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3180 transitions. [2023-08-29 02:59:49,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5382532159783344 [2023-08-29 02:59:49,017 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3180 transitions. [2023-08-29 02:59:49,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3180 transitions. [2023-08-29 02:59:49,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:59:49,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3180 transitions. [2023-08-29 02:59:49,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 227.14285714285714) internal successors, (3180), 14 states have internal predecessors, (3180), 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 02:59:49,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 422.0) internal successors, (6330), 15 states have internal predecessors, (6330), 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 02:59:49,057 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 422.0) internal successors, (6330), 15 states have internal predecessors, (6330), 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 02:59:49,057 INFO L175 Difference]: Start difference. First operand has 129 places, 166 transitions, 610 flow. Second operand 14 states and 3180 transitions. [2023-08-29 02:59:49,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 79 transitions, 379 flow [2023-08-29 02:59:49,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 79 transitions, 311 flow, removed 6 selfloop flow, removed 10 redundant places. [2023-08-29 02:59:49,059 INFO L231 Difference]: Finished difference. Result has 74 places, 48 transitions, 175 flow [2023-08-29 02:59:49,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=175, PETRI_PLACES=74, PETRI_TRANSITIONS=48} [2023-08-29 02:59:49,060 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, -36 predicate places. [2023-08-29 02:59:49,060 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 48 transitions, 175 flow [2023-08-29 02:59:49,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 224.78571428571428) internal successors, (3147), 14 states have internal predecessors, (3147), 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 02:59:49,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:59:49,062 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:59:49,072 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 02:59:49,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:59:49,268 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr4ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-08-29 02:59:49,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:59:49,268 INFO L85 PathProgramCache]: Analyzing trace with hash -299761414, now seen corresponding path program 1 times [2023-08-29 02:59:49,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:59:49,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342860996] [2023-08-29 02:59:49,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:59:49,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:59:49,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:59:49,673 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 02:59:49,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:59:49,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342860996] [2023-08-29 02:59:49,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342860996] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:59:49,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:59:49,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:59:49,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081587976] [2023-08-29 02:59:49,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:59:49,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:59:49,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:59:49,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:59:49,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:59:49,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 422 [2023-08-29 02:59:49,988 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 48 transitions, 175 flow. Second operand has 6 states, 6 states have (on average 180.0) internal successors, (1080), 6 states have internal predecessors, (1080), 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 02:59:49,988 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:59:49,988 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 422 [2023-08-29 02:59:49,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:59:50,082 INFO L130 PetriNetUnfolder]: 51/158 cut-off events. [2023-08-29 02:59:50,082 INFO L131 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2023-08-29 02:59:50,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 374 conditions, 158 events. 51/158 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 236 event pairs, 40 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 310. Up to 118 conditions per place. [2023-08-29 02:59:50,083 INFO L137 encePairwiseOnDemand]: 416/422 looper letters, 44 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2023-08-29 02:59:50,083 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 55 transitions, 295 flow [2023-08-29 02:59:50,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:59:50,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:59:50,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1102 transitions. [2023-08-29 02:59:50,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4352290679304897 [2023-08-29 02:59:50,087 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1102 transitions. [2023-08-29 02:59:50,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1102 transitions. [2023-08-29 02:59:50,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:59:50,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1102 transitions. [2023-08-29 02:59:50,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 183.66666666666666) internal successors, (1102), 6 states have internal predecessors, (1102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:59:50,093 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 02:59:50,094 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 02:59:50,094 INFO L175 Difference]: Start difference. First operand has 74 places, 48 transitions, 175 flow. Second operand 6 states and 1102 transitions. [2023-08-29 02:59:50,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 55 transitions, 295 flow [2023-08-29 02:59:50,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 55 transitions, 223 flow, removed 24 selfloop flow, removed 10 redundant places. [2023-08-29 02:59:50,096 INFO L231 Difference]: Finished difference. Result has 56 places, 47 transitions, 115 flow [2023-08-29 02:59:50,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=115, PETRI_PLACES=56, PETRI_TRANSITIONS=47} [2023-08-29 02:59:50,097 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, -54 predicate places. [2023-08-29 02:59:50,097 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 47 transitions, 115 flow [2023-08-29 02:59:50,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 180.0) internal successors, (1080), 6 states have internal predecessors, (1080), 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 02:59:50,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:59:50,098 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:59:50,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 02:59:50,098 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr4ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-08-29 02:59:50,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:59:50,099 INFO L85 PathProgramCache]: Analyzing trace with hash -156441606, now seen corresponding path program 1 times [2023-08-29 02:59:50,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:59:50,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735516484] [2023-08-29 02:59:50,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:59:50,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:59:50,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:59:50,532 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 02:59:50,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:59:50,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735516484] [2023-08-29 02:59:50,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735516484] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:59:50,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:59:50,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:59:50,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463664600] [2023-08-29 02:59:50,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:59:50,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:59:50,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:59:50,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:59:50,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:59:50,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 422 [2023-08-29 02:59:50,868 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 115 flow. Second operand has 6 states, 6 states have (on average 182.16666666666666) internal successors, (1093), 6 states have internal predecessors, (1093), 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 02:59:50,868 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:59:50,868 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 422 [2023-08-29 02:59:50,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:59:50,930 INFO L130 PetriNetUnfolder]: 51/156 cut-off events. [2023-08-29 02:59:50,930 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 02:59:50,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 156 events. 51/156 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 238 event pairs, 42 based on Foata normal form. 3/158 useless extension candidates. Maximal degree in co-relation 307. Up to 123 conditions per place. [2023-08-29 02:59:50,931 INFO L137 encePairwiseOnDemand]: 417/422 looper letters, 0 selfloop transitions, 0 changer transitions 54/54 dead transitions. [2023-08-29 02:59:50,931 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 54 transitions, 231 flow [2023-08-29 02:59:50,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:59:50,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:59:50,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1102 transitions. [2023-08-29 02:59:50,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4352290679304897 [2023-08-29 02:59:50,934 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1102 transitions. [2023-08-29 02:59:50,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1102 transitions. [2023-08-29 02:59:50,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:59:50,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1102 transitions. [2023-08-29 02:59:50,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 183.66666666666666) internal successors, (1102), 6 states have internal predecessors, (1102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:59:50,940 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 02:59:50,940 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 02:59:50,940 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 115 flow. Second operand 6 states and 1102 transitions. [2023-08-29 02:59:50,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 54 transitions, 231 flow [2023-08-29 02:59:50,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 54 transitions, 221 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-29 02:59:50,942 INFO L231 Difference]: Finished difference. Result has 55 places, 0 transitions, 0 flow [2023-08-29 02:59:50,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=55, PETRI_TRANSITIONS=0} [2023-08-29 02:59:50,942 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, -55 predicate places. [2023-08-29 02:59:50,942 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 0 transitions, 0 flow [2023-08-29 02:59:50,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 182.16666666666666) internal successors, (1093), 6 states have internal predecessors, (1093), 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 02:59:50,945 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (15 of 16 remaining) [2023-08-29 02:59:50,946 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (14 of 16 remaining) [2023-08-29 02:59:50,946 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (13 of 16 remaining) [2023-08-29 02:59:50,946 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (12 of 16 remaining) [2023-08-29 02:59:50,946 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (11 of 16 remaining) [2023-08-29 02:59:50,946 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 16 remaining) [2023-08-29 02:59:50,946 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 16 remaining) [2023-08-29 02:59:50,946 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (8 of 16 remaining) [2023-08-29 02:59:50,947 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 16 remaining) [2023-08-29 02:59:50,947 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 16 remaining) [2023-08-29 02:59:50,947 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 16 remaining) [2023-08-29 02:59:50,947 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 16 remaining) [2023-08-29 02:59:50,947 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (3 of 16 remaining) [2023-08-29 02:59:50,947 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (2 of 16 remaining) [2023-08-29 02:59:50,947 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (1 of 16 remaining) [2023-08-29 02:59:50,947 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 16 remaining) [2023-08-29 02:59:50,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 02:59:50,948 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2023-08-29 02:59:50,950 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-29 02:59:50,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 234 places, 262 transitions, 532 flow [2023-08-29 02:59:50,992 INFO L130 PetriNetUnfolder]: 45/371 cut-off events. [2023-08-29 02:59:50,992 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 02:59:50,994 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 02:59:50,994 INFO L82 GeneralOperation]: Start removeDead. Operand has 234 places, 262 transitions, 532 flow [2023-08-29 02:59:50,996 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 230 places, 257 transitions, 519 flow [2023-08-29 02:59:50,996 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:59:50,997 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 230 places, 257 transitions, 519 flow [2023-08-29 02:59:50,997 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 230 places, 257 transitions, 519 flow [2023-08-29 02:59:50,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 230 places, 257 transitions, 519 flow [2023-08-29 02:59:51,026 INFO L130 PetriNetUnfolder]: 44/366 cut-off events. [2023-08-29 02:59:51,026 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:59:51,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 371 conditions, 366 events. 44/366 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1436 event pairs, 0 based on Foata normal form. 0/301 useless extension candidates. Maximal degree in co-relation 215. Up to 8 conditions per place. [2023-08-29 02:59:51,038 INFO L119 LiptonReduction]: Number of co-enabled transitions 23230 [2023-08-29 02:59:53,367 INFO L134 LiptonReduction]: Checked pairs total: 82834 [2023-08-29 02:59:53,368 INFO L136 LiptonReduction]: Total number of compositions: 158 [2023-08-29 02:59:53,369 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-29 02:59:53,370 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;@1d659884, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:59:53,370 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-29 02:59:53,373 INFO L130 PetriNetUnfolder]: 5/29 cut-off events. [2023-08-29 02:59:53,373 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:59:53,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:59:53,373 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-29 02:59:53,373 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-29 02:59:53,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:59:53,374 INFO L85 PathProgramCache]: Analyzing trace with hash 109533352, now seen corresponding path program 1 times [2023-08-29 02:59:53,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:59:53,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274882560] [2023-08-29 02:59:53,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:59:53,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:59:53,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:59:53,396 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 02:59:53,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:59:53,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274882560] [2023-08-29 02:59:53,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274882560] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:59:53,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:59:53,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:59:53,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339501984] [2023-08-29 02:59:53,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:59:53,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:59:53,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:59:53,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:59:53,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:59:53,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 420 [2023-08-29 02:59:53,407 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 130 transitions, 265 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 02:59:53,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:59:53,407 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 420 [2023-08-29 02:59:53,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:59:53,571 INFO L130 PetriNetUnfolder]: 380/1487 cut-off events. [2023-08-29 02:59:53,571 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:59:53,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2235 conditions, 1487 events. 380/1487 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 10474 event pairs, 340 based on Foata normal form. 159/1526 useless extension candidates. Maximal degree in co-relation 2142. Up to 741 conditions per place. [2023-08-29 02:59:53,576 INFO L137 encePairwiseOnDemand]: 395/420 looper letters, 23 selfloop transitions, 2 changer transitions 53/109 dead transitions. [2023-08-29 02:59:53,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 109 transitions, 307 flow [2023-08-29 02:59:53,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:59:53,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:59:53,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 746 transitions. [2023-08-29 02:59:53,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5920634920634921 [2023-08-29 02:59:53,579 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 746 transitions. [2023-08-29 02:59:53,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 746 transitions. [2023-08-29 02:59:53,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:59:53,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 746 transitions. [2023-08-29 02:59:53,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 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 02:59:53,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 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 02:59:53,585 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 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 02:59:53,585 INFO L175 Difference]: Start difference. First operand has 109 places, 130 transitions, 265 flow. Second operand 3 states and 746 transitions. [2023-08-29 02:59:53,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 109 transitions, 307 flow [2023-08-29 02:59:53,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 109 transitions, 307 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:59:53,587 INFO L231 Difference]: Finished difference. Result has 111 places, 56 transitions, 127 flow [2023-08-29 02:59:53,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=111, PETRI_TRANSITIONS=56} [2023-08-29 02:59:53,590 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, 2 predicate places. [2023-08-29 02:59:53,590 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 56 transitions, 127 flow [2023-08-29 02:59:53,590 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 02:59:53,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:59:53,591 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-29 02:59:53,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 02:59:53,591 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-29 02:59:53,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:59:53,591 INFO L85 PathProgramCache]: Analyzing trace with hash 174016718, now seen corresponding path program 1 times [2023-08-29 02:59:53,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:59:53,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976983628] [2023-08-29 02:59:53,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:59:53,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:59:53,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:59:53,619 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 02:59:53,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:59:53,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976983628] [2023-08-29 02:59:53,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976983628] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:59:53,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513788506] [2023-08-29 02:59:53,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:59:53,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:59:53,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:59:53,625 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 02:59:53,652 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 02:59:53,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:59:53,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 02:59:53,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:59:53,714 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 02:59:53,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 02:59:53,727 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 02:59:53,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513788506] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 02:59:53,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 02:59:53,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 02:59:53,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907456388] [2023-08-29 02:59:53,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 02:59:53,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 02:59:53,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:59:53,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 02:59:53,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 02:59:53,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 420 [2023-08-29 02:59:53,747 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 56 transitions, 127 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 02:59:53,747 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:59:53,747 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 420 [2023-08-29 02:59:53,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:59:53,809 INFO L130 PetriNetUnfolder]: 56/254 cut-off events. [2023-08-29 02:59:53,810 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:59:53,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 403 conditions, 254 events. 56/254 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 881 event pairs, 51 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 391. Up to 129 conditions per place. [2023-08-29 02:59:53,811 INFO L137 encePairwiseOnDemand]: 417/420 looper letters, 23 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2023-08-29 02:59:53,811 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 59 transitions, 195 flow [2023-08-29 02:59:53,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:59:53,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:59:53,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1387 transitions. [2023-08-29 02:59:53,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5503968253968254 [2023-08-29 02:59:53,816 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1387 transitions. [2023-08-29 02:59:53,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1387 transitions. [2023-08-29 02:59:53,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:59:53,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1387 transitions. [2023-08-29 02:59:53,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 231.16666666666666) internal successors, (1387), 6 states have internal predecessors, (1387), 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 02:59:53,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 420.0) internal successors, (2940), 7 states have internal predecessors, (2940), 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 02:59:53,837 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 420.0) internal successors, (2940), 7 states have internal predecessors, (2940), 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 02:59:53,837 INFO L175 Difference]: Start difference. First operand has 111 places, 56 transitions, 127 flow. Second operand 6 states and 1387 transitions. [2023-08-29 02:59:53,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 59 transitions, 195 flow [2023-08-29 02:59:53,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 59 transitions, 191 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-29 02:59:53,838 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 159 flow [2023-08-29 02:59:53,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=159, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2023-08-29 02:59:53,840 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, -43 predicate places. [2023-08-29 02:59:53,840 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 159 flow [2023-08-29 02:59:53,840 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 02:59:53,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:59:53,841 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-08-29 02:59:53,851 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 02:59:54,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:59:54,046 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-29 02:59:54,046 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:59:54,046 INFO L85 PathProgramCache]: Analyzing trace with hash 890581544, now seen corresponding path program 2 times [2023-08-29 02:59:54,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:59:54,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506591312] [2023-08-29 02:59:54,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:59:54,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:59:54,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:59:54,110 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 02:59:54,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:59:54,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506591312] [2023-08-29 02:59:54,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506591312] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:59:54,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933296825] [2023-08-29 02:59:54,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 02:59:54,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:59:54,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:59:54,112 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 02:59:54,116 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 02:59:54,190 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 02:59:54,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 02:59:54,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 02:59:54,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:59:54,208 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 02:59:54,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 02:59:54,253 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 02:59:54,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933296825] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 02:59:54,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 02:59:54,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-29 02:59:54,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898517335] [2023-08-29 02:59:54,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 02:59:54,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-29 02:59:54,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:59:54,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-29 02:59:54,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-29 02:59:54,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 420 [2023-08-29 02:59:54,286 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 159 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 02:59:54,286 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:59:54,286 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 420 [2023-08-29 02:59:54,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:59:54,378 INFO L130 PetriNetUnfolder]: 56/260 cut-off events. [2023-08-29 02:59:54,379 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2023-08-29 02:59:54,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 440 conditions, 260 events. 56/260 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 881 event pairs, 51 based on Foata normal form. 6/243 useless extension candidates. Maximal degree in co-relation 382. Up to 129 conditions per place. [2023-08-29 02:59:54,380 INFO L137 encePairwiseOnDemand]: 417/420 looper letters, 23 selfloop transitions, 11 changer transitions 0/65 dead transitions. [2023-08-29 02:59:54,380 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 65 transitions, 263 flow [2023-08-29 02:59:54,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 02:59:54,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 02:59:54,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2752 transitions. [2023-08-29 02:59:54,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546031746031746 [2023-08-29 02:59:54,387 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2752 transitions. [2023-08-29 02:59:54,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2752 transitions. [2023-08-29 02:59:54,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:59:54,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2752 transitions. [2023-08-29 02:59:54,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 229.33333333333334) internal successors, (2752), 12 states have internal predecessors, (2752), 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 02:59:54,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 420.0) internal successors, (5460), 13 states have internal predecessors, (5460), 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 02:59:54,402 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 420.0) internal successors, (5460), 13 states have internal predecessors, (5460), 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 02:59:54,402 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 159 flow. Second operand 12 states and 2752 transitions. [2023-08-29 02:59:54,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 65 transitions, 263 flow [2023-08-29 02:59:54,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 65 transitions, 249 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-29 02:59:54,404 INFO L231 Difference]: Finished difference. Result has 82 places, 65 transitions, 229 flow [2023-08-29 02:59:54,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=229, PETRI_PLACES=82, PETRI_TRANSITIONS=65} [2023-08-29 02:59:54,405 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, -27 predicate places. [2023-08-29 02:59:54,405 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 65 transitions, 229 flow [2023-08-29 02:59:54,406 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 02:59:54,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:59:54,406 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-08-29 02:59:54,414 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 02:59:54,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:59:54,612 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-29 02:59:54,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:59:54,613 INFO L85 PathProgramCache]: Analyzing trace with hash 807899240, now seen corresponding path program 3 times [2023-08-29 02:59:54,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:59:54,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133120569] [2023-08-29 02:59:54,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:59:54,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:59:54,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 02:59:54,642 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 02:59:54,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 02:59:54,684 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 02:59:54,684 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 02:59:54,685 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-29 02:59:54,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-29 02:59:54,685 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2023-08-29 02:59:54,686 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-29 02:59:54,687 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 02:59:54,687 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-29 02:59:54,748 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-29 02:59:54,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 325 places, 365 transitions, 748 flow [2023-08-29 02:59:54,822 INFO L130 PetriNetUnfolder]: 75/613 cut-off events. [2023-08-29 02:59:54,822 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 02:59:54,831 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 02:59:54,831 INFO L82 GeneralOperation]: Start removeDead. Operand has 325 places, 365 transitions, 748 flow [2023-08-29 02:59:54,837 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 325 places, 365 transitions, 748 flow [2023-08-29 02:59:54,837 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:59:54,837 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 325 places, 365 transitions, 748 flow [2023-08-29 02:59:54,838 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 325 places, 365 transitions, 748 flow [2023-08-29 02:59:54,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 325 places, 365 transitions, 748 flow [2023-08-29 02:59:54,905 INFO L130 PetriNetUnfolder]: 75/613 cut-off events. [2023-08-29 02:59:54,905 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 02:59:54,914 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 02:59:54,940 INFO L119 LiptonReduction]: Number of co-enabled transitions 69084 [2023-08-29 02:59:57,912 INFO L134 LiptonReduction]: Checked pairs total: 250658 [2023-08-29 02:59:57,912 INFO L136 LiptonReduction]: Total number of compositions: 218 [2023-08-29 02:59:57,914 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 02:59:57,914 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;@1d659884, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:59:57,914 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-29 02:59:57,920 INFO L130 PetriNetUnfolder]: 15/88 cut-off events. [2023-08-29 02:59:57,920 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 02:59:57,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:59:57,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:59:57,921 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-29 02:59:57,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:59:57,921 INFO L85 PathProgramCache]: Analyzing trace with hash -890190882, now seen corresponding path program 1 times [2023-08-29 02:59:57,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:59:57,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686460617] [2023-08-29 02:59:57,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:59:57,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:59:57,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:59:57,961 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 02:59:57,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:59:57,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686460617] [2023-08-29 02:59:57,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686460617] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:59:57,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:59:57,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:59:57,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720847104] [2023-08-29 02:59:57,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:59:57,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:59:57,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:59:57,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:59:57,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:59:57,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 583 [2023-08-29 02:59:57,973 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 02:59:57,973 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:59:57,973 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 583 [2023-08-29 02:59:57,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 03:00:01,239 INFO L130 PetriNetUnfolder]: 14690/34803 cut-off events. [2023-08-29 03:00:01,240 INFO L131 PetriNetUnfolder]: For 172/244 co-relation queries the response was YES. [2023-08-29 03:00:01,325 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 876. Compared 374257 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 03:00:01,502 INFO L137 encePairwiseOnDemand]: 549/583 looper letters, 62 selfloop transitions, 2 changer transitions 0/163 dead transitions. [2023-08-29 03:00:01,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 163 transitions, 472 flow [2023-08-29 03:00:01,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 03:00:01,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 03:00:01,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1041 transitions. [2023-08-29 03:00:01,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5951972555746141 [2023-08-29 03:00:01,506 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1041 transitions. [2023-08-29 03:00:01,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1041 transitions. [2023-08-29 03:00:01,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 03:00:01,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1041 transitions. [2023-08-29 03:00:01,509 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 03:00:01,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 583.0) internal successors, (2332), 4 states have internal predecessors, (2332), 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 03:00:01,512 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 583.0) internal successors, (2332), 4 states have internal predecessors, (2332), 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 03:00:01,512 INFO L175 Difference]: Start difference. First operand has 161 places, 193 transitions, 404 flow. Second operand 3 states and 1041 transitions. [2023-08-29 03:00:01,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 163 transitions, 472 flow [2023-08-29 03:00:01,514 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 03:00:01,517 INFO L231 Difference]: Finished difference. Result has 164 places, 163 transitions, 354 flow [2023-08-29 03:00:01,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, 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 03:00:01,518 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, 3 predicate places. [2023-08-29 03:00:01,518 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 163 transitions, 354 flow [2023-08-29 03:00:01,519 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 03:00:01,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 03:00:01,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 03:00:01,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-29 03:00:01,520 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-29 03:00:01,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 03:00:01,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1287142605, now seen corresponding path program 1 times [2023-08-29 03:00:01,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 03:00:01,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883842593] [2023-08-29 03:00:01,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 03:00:01,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 03:00:01,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 03:00:01,558 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 03:00:01,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 03:00:01,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883842593] [2023-08-29 03:00:01,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883842593] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 03:00:01,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146194049] [2023-08-29 03:00:01,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 03:00:01,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 03:00:01,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 03:00:01,560 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 03:00:01,563 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 03:00:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 03:00:01,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-29 03:00:01,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 03:00:01,654 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 03:00:01,654 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 03:00:01,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146194049] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 03:00:01,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 03:00:01,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-29 03:00:01,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273463675] [2023-08-29 03:00:01,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 03:00:01,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 03:00:01,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 03:00:01,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 03:00:01,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 03:00:01,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 583 [2023-08-29 03:00:01,665 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 03:00:01,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 03:00:01,665 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 583 [2023-08-29 03:00:01,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 03:00:04,172 INFO L130 PetriNetUnfolder]: 14345/34814 cut-off events. [2023-08-29 03:00:04,172 INFO L131 PetriNetUnfolder]: For 150/188 co-relation queries the response was YES. [2023-08-29 03:00:04,234 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 897. Compared 382745 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 03:00:04,354 INFO L137 encePairwiseOnDemand]: 580/583 looper letters, 81 selfloop transitions, 2 changer transitions 0/182 dead transitions. [2023-08-29 03:00:04,355 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 182 transitions, 558 flow [2023-08-29 03:00:04,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 03:00:04,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 03:00:04,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1028 transitions. [2023-08-29 03:00:04,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5877644368210406 [2023-08-29 03:00:04,359 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1028 transitions. [2023-08-29 03:00:04,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1028 transitions. [2023-08-29 03:00:04,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 03:00:04,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1028 transitions. [2023-08-29 03:00:04,362 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 03:00:04,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 583.0) internal successors, (2332), 4 states have internal predecessors, (2332), 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 03:00:04,365 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 583.0) internal successors, (2332), 4 states have internal predecessors, (2332), 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 03:00:04,365 INFO L175 Difference]: Start difference. First operand has 164 places, 163 transitions, 354 flow. Second operand 3 states and 1028 transitions. [2023-08-29 03:00:04,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 182 transitions, 558 flow [2023-08-29 03:00:04,366 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 03:00:04,369 INFO L231 Difference]: Finished difference. Result has 166 places, 164 transitions, 362 flow [2023-08-29 03:00:04,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, 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 03:00:04,370 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, 5 predicate places. [2023-08-29 03:00:04,371 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 164 transitions, 362 flow [2023-08-29 03:00:04,371 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 03:00:04,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 03:00:04,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 03:00:04,376 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-29 03:00:04,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 03:00:04,577 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-29 03:00:04,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 03:00:04,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1324040464, now seen corresponding path program 1 times [2023-08-29 03:00:04,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 03:00:04,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575536815] [2023-08-29 03:00:04,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 03:00:04,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 03:00:04,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 03:00:04,619 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 03:00:04,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 03:00:04,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575536815] [2023-08-29 03:00:04,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575536815] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 03:00:04,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772474725] [2023-08-29 03:00:04,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 03:00:04,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 03:00:04,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 03:00:04,621 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 03:00:04,624 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 03:00:04,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 03:00:04,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 03:00:04,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 03:00:04,726 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 03:00:04,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 03:00:04,739 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 03:00:04,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772474725] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 03:00:04,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 03:00:04,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 03:00:04,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973706476] [2023-08-29 03:00:04,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 03:00:04,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 03:00:04,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 03:00:04,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 03:00:04,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 03:00:04,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 583 [2023-08-29 03:00:04,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 164 transitions, 362 flow. Second operand has 7 states, 7 states have (on average 315.85714285714283) internal successors, (2211), 7 states have internal predecessors, (2211), 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 03:00:04,765 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 03:00:04,765 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 583 [2023-08-29 03:00:04,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 03:00:07,428 INFO L130 PetriNetUnfolder]: 14723/35112 cut-off events. [2023-08-29 03:00:07,428 INFO L131 PetriNetUnfolder]: For 855/870 co-relation queries the response was YES. [2023-08-29 03:00:07,495 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 898. Compared 380430 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 03:00:07,623 INFO L137 encePairwiseOnDemand]: 580/583 looper letters, 63 selfloop transitions, 5 changer transitions 0/167 dead transitions. [2023-08-29 03:00:07,623 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 167 transitions, 510 flow [2023-08-29 03:00:07,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 03:00:07,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 03:00:07,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1954 transitions. [2023-08-29 03:00:07,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5586049170954831 [2023-08-29 03:00:07,629 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1954 transitions. [2023-08-29 03:00:07,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1954 transitions. [2023-08-29 03:00:07,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 03:00:07,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1954 transitions. [2023-08-29 03:00:07,633 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 03:00:07,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 583.0) internal successors, (4081), 7 states have internal predecessors, (4081), 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 03:00:07,639 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 583.0) internal successors, (4081), 7 states have internal predecessors, (4081), 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 03:00:07,639 INFO L175 Difference]: Start difference. First operand has 166 places, 164 transitions, 362 flow. Second operand 6 states and 1954 transitions. [2023-08-29 03:00:07,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 167 transitions, 510 flow [2023-08-29 03:00:07,641 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 03:00:07,643 INFO L231 Difference]: Finished difference. Result has 173 places, 167 transitions, 396 flow [2023-08-29 03:00:07,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, 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 03:00:07,644 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, 12 predicate places. [2023-08-29 03:00:07,644 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 167 transitions, 396 flow [2023-08-29 03:00:07,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 315.85714285714283) internal successors, (2211), 7 states have internal predecessors, (2211), 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 03:00:07,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 03:00:07,645 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 03:00:07,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-29 03:00:07,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-29 03:00:07,850 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-29 03:00:07,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 03:00:07,851 INFO L85 PathProgramCache]: Analyzing trace with hash 327868167, now seen corresponding path program 2 times [2023-08-29 03:00:07,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 03:00:07,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735464528] [2023-08-29 03:00:07,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 03:00:07,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 03:00:07,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 03:00:07,923 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 03:00:07,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 03:00:07,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735464528] [2023-08-29 03:00:07,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735464528] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 03:00:07,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810061755] [2023-08-29 03:00:07,924 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 03:00:07,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 03:00:07,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 03:00:07,925 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 03:00:07,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-29 03:00:08,018 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 03:00:08,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 03:00:08,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-29 03:00:08,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 03:00:08,026 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 03:00:08,037 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 03:00:08,056 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 03:00:08,056 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 03:00:08,081 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 03:00:08,082 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 03:00:08,102 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 03:00:08,102 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 03:00:08,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810061755] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 03:00:08,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 03:00:08,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-08-29 03:00:08,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107278942] [2023-08-29 03:00:08,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 03:00:08,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 03:00:08,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 03:00:08,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 03:00:08,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-08-29 03:00:08,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 583 [2023-08-29 03:00:08,706 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 167 transitions, 396 flow. Second operand has 6 states, 6 states have (on average 275.1666666666667) internal successors, (1651), 6 states have internal predecessors, (1651), 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 03:00:08,706 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 03:00:08,706 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 583 [2023-08-29 03:00:08,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 03:00:26,819 INFO L130 PetriNetUnfolder]: 129574/233845 cut-off events. [2023-08-29 03:00:26,819 INFO L131 PetriNetUnfolder]: For 4586/4610 co-relation queries the response was YES. [2023-08-29 03:00:27,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 433732 conditions, 233845 events. 129574/233845 cut-off events. For 4586/4610 co-relation queries the response was YES. Maximal size of possible extension queue 4932. Compared 2483977 event pairs, 46185 based on Foata normal form. 2/215990 useless extension candidates. Maximal degree in co-relation 433696. Up to 88199 conditions per place. [2023-08-29 03:00:28,213 INFO L137 encePairwiseOnDemand]: 547/583 looper letters, 324 selfloop transitions, 72 changer transitions 0/458 dead transitions. [2023-08-29 03:00:28,214 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 458 transitions, 1838 flow [2023-08-29 03:00:28,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 03:00:28,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 03:00:28,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2028 transitions. [2023-08-29 03:00:28,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5797598627787307 [2023-08-29 03:00:28,220 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2028 transitions. [2023-08-29 03:00:28,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2028 transitions. [2023-08-29 03:00:28,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 03:00:28,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2028 transitions. [2023-08-29 03:00:28,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 338.0) internal successors, (2028), 6 states have internal predecessors, (2028), 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 03:00:28,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 583.0) internal successors, (4081), 7 states have internal predecessors, (4081), 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 03:00:28,232 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 583.0) internal successors, (4081), 7 states have internal predecessors, (4081), 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 03:00:28,232 INFO L175 Difference]: Start difference. First operand has 173 places, 167 transitions, 396 flow. Second operand 6 states and 2028 transitions. [2023-08-29 03:00:28,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 458 transitions, 1838 flow [2023-08-29 03:00:28,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 458 transitions, 1824 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-29 03:00:28,240 INFO L231 Difference]: Finished difference. Result has 181 places, 240 transitions, 868 flow [2023-08-29 03:00:28,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=868, PETRI_PLACES=181, PETRI_TRANSITIONS=240} [2023-08-29 03:00:28,241 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, 20 predicate places. [2023-08-29 03:00:28,241 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 240 transitions, 868 flow [2023-08-29 03:00:28,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 275.1666666666667) internal successors, (1651), 6 states have internal predecessors, (1651), 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 03:00:28,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 03:00:28,243 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 03:00:28,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-29 03:00:28,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-29 03:00:28,448 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-29 03:00:28,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 03:00:28,448 INFO L85 PathProgramCache]: Analyzing trace with hash 215519239, now seen corresponding path program 1 times [2023-08-29 03:00:28,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 03:00:28,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486958887] [2023-08-29 03:00:28,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 03:00:28,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 03:00:28,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 03:00:28,487 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-29 03:00:28,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 03:00:28,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486958887] [2023-08-29 03:00:28,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486958887] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 03:00:28,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171533847] [2023-08-29 03:00:28,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 03:00:28,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 03:00:28,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 03:00:28,489 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 03:00:28,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-29 03:00:28,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 03:00:28,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 03:00:28,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 03:00:28,629 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 03:00:28,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 03:00:28,689 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 03:00:28,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171533847] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 03:00:28,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 03:00:28,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 14 [2023-08-29 03:00:28,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803240994] [2023-08-29 03:00:28,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 03:00:28,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-29 03:00:28,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 03:00:28,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-29 03:00:28,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-08-29 03:00:28,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 583 [2023-08-29 03:00:28,744 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 240 transitions, 868 flow. Second operand has 14 states, 14 states have (on average 312.7857142857143) internal successors, (4379), 14 states have internal predecessors, (4379), 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 03:00:28,745 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 03:00:28,745 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 583 [2023-08-29 03:00:28,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 03:00:36,984 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1605] L944-33-->L944-35: Formula: (let ((.cse0 (select |v_#race_211| |v_~#a~0.base_281|)) (.cse1 (* |v_t_funThread1of2ForFork0_~i~0#1_85| 28))) (and (= (select .cse0 (+ .cse1 |v_~#a~0.offset_266| 2)) 0) (= (select .cse0 (+ .cse1 |v_~#a~0.offset_266| 3)) 0) (= (select .cse0 (+ .cse1 |v_~#a~0.offset_266| 1)) 0) (= (select .cse0 (+ .cse1 |v_~#a~0.offset_266|)) 0) (= |v_t_funThread1of2ForFork0_#t~mem39#1_11| |v_t_funThread1of2ForFork0_#t~post40#1_13|))) InVars {#race=|v_#race_211|, ~#a~0.base=|v_~#a~0.base_281|, ~#a~0.offset=|v_~#a~0.offset_266|, t_funThread1of2ForFork0_~i~0#1=|v_t_funThread1of2ForFork0_~i~0#1_85|, t_funThread1of2ForFork0_#t~mem39#1=|v_t_funThread1of2ForFork0_#t~mem39#1_11|} OutVars{#race=|v_#race_211|, ~#a~0.base=|v_~#a~0.base_281|, ~#a~0.offset=|v_~#a~0.offset_266|, t_funThread1of2ForFork0_~i~0#1=|v_t_funThread1of2ForFork0_~i~0#1_85|, t_funThread1of2ForFork0_#t~post40#1=|v_t_funThread1of2ForFork0_#t~post40#1_13|, t_funThread1of2ForFork0_#t~mem39#1=|v_t_funThread1of2ForFork0_#t~mem39#1_11|} AuxVars[] AssignedVars[t_funThread1of2ForFork0_#t~post40#1][300], [t_funThread1of2ForFork0InUse, t_funThread2of2ForFork0InUse, Black: 516#(and (= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|)) 0) (= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset| 1)) 0) (= (select (select |#race| |~#a~0.base|) (+ 2 (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|)) 0)), 373#true, Black: 512#(and (= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|)) 0) (= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset| 1)) 0)), Black: 376#(<= |ULTIMATE.start_main_~i~1#1| 1), Black: 508#(= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|)) 0), Black: 330#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 457#(< |ULTIMATE.start_main_~i~1#1| 9), Black: 453#(< |ULTIMATE.start_main_~i~1#1| 10), 526#true, Black: 346#(<= |ULTIMATE.start_main_~i~3#1| 0), 195#L955-23true, 103#L944-35true, 198#L944-16true, 520#(and (= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|)) 0) (= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset| 1)) 0) (= 0 (select (select |#race| |~#a~0.base|) (+ 3 (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|))) (= (select (select |#race| |~#a~0.base|) (+ 2 (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|)) 0))]) [2023-08-29 03:00:36,984 INFO L383 tUnfolder$Statistics]: this new event has 72 ancestors and is cut-off event [2023-08-29 03:00:36,984 INFO L386 tUnfolder$Statistics]: existing Event has 72 ancestors and is cut-off event [2023-08-29 03:00:36,984 INFO L386 tUnfolder$Statistics]: existing Event has 72 ancestors and is cut-off event [2023-08-29 03:00:36,984 INFO L386 tUnfolder$Statistics]: existing Event has 72 ancestors and is cut-off event [2023-08-29 03:00:37,349 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1605] L944-33-->L944-35: Formula: (let ((.cse0 (select |v_#race_211| |v_~#a~0.base_281|)) (.cse1 (* |v_t_funThread1of2ForFork0_~i~0#1_85| 28))) (and (= (select .cse0 (+ .cse1 |v_~#a~0.offset_266| 2)) 0) (= (select .cse0 (+ .cse1 |v_~#a~0.offset_266| 3)) 0) (= (select .cse0 (+ .cse1 |v_~#a~0.offset_266| 1)) 0) (= (select .cse0 (+ .cse1 |v_~#a~0.offset_266|)) 0) (= |v_t_funThread1of2ForFork0_#t~mem39#1_11| |v_t_funThread1of2ForFork0_#t~post40#1_13|))) InVars {#race=|v_#race_211|, ~#a~0.base=|v_~#a~0.base_281|, ~#a~0.offset=|v_~#a~0.offset_266|, t_funThread1of2ForFork0_~i~0#1=|v_t_funThread1of2ForFork0_~i~0#1_85|, t_funThread1of2ForFork0_#t~mem39#1=|v_t_funThread1of2ForFork0_#t~mem39#1_11|} OutVars{#race=|v_#race_211|, ~#a~0.base=|v_~#a~0.base_281|, ~#a~0.offset=|v_~#a~0.offset_266|, t_funThread1of2ForFork0_~i~0#1=|v_t_funThread1of2ForFork0_~i~0#1_85|, t_funThread1of2ForFork0_#t~post40#1=|v_t_funThread1of2ForFork0_#t~post40#1_13|, t_funThread1of2ForFork0_#t~mem39#1=|v_t_funThread1of2ForFork0_#t~mem39#1_11|} AuxVars[] AssignedVars[t_funThread1of2ForFork0_#t~post40#1][300], [t_funThread1of2ForFork0InUse, t_funThread2of2ForFork0InUse, Black: 516#(and (= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|)) 0) (= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset| 1)) 0) (= (select (select |#race| |~#a~0.base|) (+ 2 (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|)) 0)), 373#true, Black: 512#(and (= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|)) 0) (= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset| 1)) 0)), Black: 376#(<= |ULTIMATE.start_main_~i~1#1| 1), 153#L955-47true, Black: 508#(= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|)) 0), Black: 330#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 457#(< |ULTIMATE.start_main_~i~1#1| 9), Black: 453#(< |ULTIMATE.start_main_~i~1#1| 10), 526#true, Black: 346#(<= |ULTIMATE.start_main_~i~3#1| 0), 198#L944-16true, 103#L944-35true, 520#(and (= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|)) 0) (= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset| 1)) 0) (= 0 (select (select |#race| |~#a~0.base|) (+ 3 (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|))) (= (select (select |#race| |~#a~0.base|) (+ 2 (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|)) 0))]) [2023-08-29 03:00:37,349 INFO L383 tUnfolder$Statistics]: this new event has 73 ancestors and is cut-off event [2023-08-29 03:00:37,349 INFO L386 tUnfolder$Statistics]: existing Event has 73 ancestors and is cut-off event [2023-08-29 03:00:37,349 INFO L386 tUnfolder$Statistics]: existing Event has 73 ancestors and is cut-off event [2023-08-29 03:00:37,349 INFO L386 tUnfolder$Statistics]: existing Event has 73 ancestors and is cut-off event [2023-08-29 03:00:38,194 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1605] L944-33-->L944-35: Formula: (let ((.cse0 (select |v_#race_211| |v_~#a~0.base_281|)) (.cse1 (* |v_t_funThread1of2ForFork0_~i~0#1_85| 28))) (and (= (select .cse0 (+ .cse1 |v_~#a~0.offset_266| 2)) 0) (= (select .cse0 (+ .cse1 |v_~#a~0.offset_266| 3)) 0) (= (select .cse0 (+ .cse1 |v_~#a~0.offset_266| 1)) 0) (= (select .cse0 (+ .cse1 |v_~#a~0.offset_266|)) 0) (= |v_t_funThread1of2ForFork0_#t~mem39#1_11| |v_t_funThread1of2ForFork0_#t~post40#1_13|))) InVars {#race=|v_#race_211|, ~#a~0.base=|v_~#a~0.base_281|, ~#a~0.offset=|v_~#a~0.offset_266|, t_funThread1of2ForFork0_~i~0#1=|v_t_funThread1of2ForFork0_~i~0#1_85|, t_funThread1of2ForFork0_#t~mem39#1=|v_t_funThread1of2ForFork0_#t~mem39#1_11|} OutVars{#race=|v_#race_211|, ~#a~0.base=|v_~#a~0.base_281|, ~#a~0.offset=|v_~#a~0.offset_266|, t_funThread1of2ForFork0_~i~0#1=|v_t_funThread1of2ForFork0_~i~0#1_85|, t_funThread1of2ForFork0_#t~post40#1=|v_t_funThread1of2ForFork0_#t~post40#1_13|, t_funThread1of2ForFork0_#t~mem39#1=|v_t_funThread1of2ForFork0_#t~mem39#1_11|} AuxVars[] AssignedVars[t_funThread1of2ForFork0_#t~post40#1][300], [t_funThread1of2ForFork0InUse, t_funThread2of2ForFork0InUse, Black: 516#(and (= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|)) 0) (= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset| 1)) 0) (= (select (select |#race| |~#a~0.base|) (+ 2 (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|)) 0)), 373#true, Black: 376#(<= |ULTIMATE.start_main_~i~1#1| 1), Black: 512#(and (= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|)) 0) (= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset| 1)) 0)), Black: 508#(= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|)) 0), Black: 330#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 457#(< |ULTIMATE.start_main_~i~1#1| 9), Black: 453#(< |ULTIMATE.start_main_~i~1#1| 10), 526#true, Black: 346#(<= |ULTIMATE.start_main_~i~3#1| 0), 103#L944-35true, 198#L944-16true, 293#L955-29true, 520#(and (= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|)) 0) (= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset| 1)) 0) (= 0 (select (select |#race| |~#a~0.base|) (+ 3 (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|))) (= (select (select |#race| |~#a~0.base|) (+ 2 (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|)) 0))]) [2023-08-29 03:00:38,194 INFO L383 tUnfolder$Statistics]: this new event has 75 ancestors and is cut-off event [2023-08-29 03:00:38,194 INFO L386 tUnfolder$Statistics]: existing Event has 75 ancestors and is cut-off event [2023-08-29 03:00:38,194 INFO L386 tUnfolder$Statistics]: existing Event has 75 ancestors and is cut-off event [2023-08-29 03:00:38,195 INFO L386 tUnfolder$Statistics]: existing Event has 75 ancestors and is cut-off event [2023-08-29 03:00:39,571 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1605] L944-33-->L944-35: Formula: (let ((.cse0 (select |v_#race_211| |v_~#a~0.base_281|)) (.cse1 (* |v_t_funThread1of2ForFork0_~i~0#1_85| 28))) (and (= (select .cse0 (+ .cse1 |v_~#a~0.offset_266| 2)) 0) (= (select .cse0 (+ .cse1 |v_~#a~0.offset_266| 3)) 0) (= (select .cse0 (+ .cse1 |v_~#a~0.offset_266| 1)) 0) (= (select .cse0 (+ .cse1 |v_~#a~0.offset_266|)) 0) (= |v_t_funThread1of2ForFork0_#t~mem39#1_11| |v_t_funThread1of2ForFork0_#t~post40#1_13|))) InVars {#race=|v_#race_211|, ~#a~0.base=|v_~#a~0.base_281|, ~#a~0.offset=|v_~#a~0.offset_266|, t_funThread1of2ForFork0_~i~0#1=|v_t_funThread1of2ForFork0_~i~0#1_85|, t_funThread1of2ForFork0_#t~mem39#1=|v_t_funThread1of2ForFork0_#t~mem39#1_11|} OutVars{#race=|v_#race_211|, ~#a~0.base=|v_~#a~0.base_281|, ~#a~0.offset=|v_~#a~0.offset_266|, t_funThread1of2ForFork0_~i~0#1=|v_t_funThread1of2ForFork0_~i~0#1_85|, t_funThread1of2ForFork0_#t~post40#1=|v_t_funThread1of2ForFork0_#t~post40#1_13|, t_funThread1of2ForFork0_#t~mem39#1=|v_t_funThread1of2ForFork0_#t~mem39#1_11|} AuxVars[] AssignedVars[t_funThread1of2ForFork0_#t~post40#1][300], [t_funThread1of2ForFork0InUse, t_funThread2of2ForFork0InUse, 373#true, Black: 516#(and (= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|)) 0) (= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset| 1)) 0) (= (select (select |#race| |~#a~0.base|) (+ 2 (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|)) 0)), Black: 512#(and (= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|)) 0) (= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset| 1)) 0)), Black: 376#(<= |ULTIMATE.start_main_~i~1#1| 1), Black: 508#(= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|)) 0), Black: 330#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 457#(< |ULTIMATE.start_main_~i~1#1| 9), Black: 453#(< |ULTIMATE.start_main_~i~1#1| 10), 526#true, 185#L955-36true, Black: 346#(<= |ULTIMATE.start_main_~i~3#1| 0), 198#L944-16true, 103#L944-35true, 520#(and (= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|)) 0) (= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset| 1)) 0) (= 0 (select (select |#race| |~#a~0.base|) (+ 3 (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|))) (= (select (select |#race| |~#a~0.base|) (+ 2 (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|)) 0))]) [2023-08-29 03:00:39,571 INFO L383 tUnfolder$Statistics]: this new event has 81 ancestors and is cut-off event [2023-08-29 03:00:39,572 INFO L386 tUnfolder$Statistics]: existing Event has 81 ancestors and is cut-off event [2023-08-29 03:00:39,572 INFO L386 tUnfolder$Statistics]: existing Event has 81 ancestors and is cut-off event [2023-08-29 03:00:39,572 INFO L386 tUnfolder$Statistics]: existing Event has 81 ancestors and is cut-off event [2023-08-29 03:00:42,329 INFO L130 PetriNetUnfolder]: 57388/143387 cut-off events. [2023-08-29 03:00:42,330 INFO L131 PetriNetUnfolder]: For 25739/28982 co-relation queries the response was YES. [2023-08-29 03:00:43,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283121 conditions, 143387 events. 57388/143387 cut-off events. For 25739/28982 co-relation queries the response was YES. Maximal size of possible extension queue 3462. Compared 1904044 event pairs, 29449 based on Foata normal form. 945/133486 useless extension candidates. Maximal degree in co-relation 283063. Up to 76343 conditions per place. [2023-08-29 03:00:43,491 INFO L137 encePairwiseOnDemand]: 578/583 looper letters, 145 selfloop transitions, 14 changer transitions 0/311 dead transitions. [2023-08-29 03:00:43,492 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 311 transitions, 1407 flow [2023-08-29 03:00:43,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-29 03:00:43,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-29 03:00:43,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4488 transitions. [2023-08-29 03:00:43,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5498652291105122 [2023-08-29 03:00:43,502 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4488 transitions. [2023-08-29 03:00:43,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4488 transitions. [2023-08-29 03:00:43,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 03:00:43,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4488 transitions. [2023-08-29 03:00:43,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 320.57142857142856) internal successors, (4488), 14 states have internal predecessors, (4488), 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 03:00:43,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 583.0) internal successors, (8745), 15 states have internal predecessors, (8745), 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 03:00:43,525 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 583.0) internal successors, (8745), 15 states have internal predecessors, (8745), 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 03:00:43,526 INFO L175 Difference]: Start difference. First operand has 181 places, 240 transitions, 868 flow. Second operand 14 states and 4488 transitions. [2023-08-29 03:00:43,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 311 transitions, 1407 flow [2023-08-29 03:00:43,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 311 transitions, 1407 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 03:00:43,630 INFO L231 Difference]: Finished difference. Result has 195 places, 246 transitions, 938 flow [2023-08-29 03:00:43,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=868, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=938, PETRI_PLACES=195, PETRI_TRANSITIONS=246} [2023-08-29 03:00:43,632 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, 34 predicate places. [2023-08-29 03:00:43,632 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 246 transitions, 938 flow [2023-08-29 03:00:43,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 312.7857142857143) internal successors, (4379), 14 states have internal predecessors, (4379), 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 03:00:43,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 03:00:43,633 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 03:00:43,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-29 03:00:43,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-29 03:00:43,839 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-29 03:00:43,840 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 03:00:43,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1182604897, now seen corresponding path program 1 times [2023-08-29 03:00:43,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 03:00:43,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706214817] [2023-08-29 03:00:43,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 03:00:43,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 03:00:43,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 03:00:44,107 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-08-29 03:00:44,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 03:00:44,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706214817] [2023-08-29 03:00:44,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706214817] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 03:00:44,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 03:00:44,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 03:00:44,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292261430] [2023-08-29 03:00:44,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 03:00:44,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 03:00:44,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 03:00:44,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 03:00:44,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 03:00:44,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 583 [2023-08-29 03:00:44,605 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 246 transitions, 938 flow. Second operand has 6 states, 6 states have (on average 275.5) internal successors, (1653), 6 states have internal predecessors, (1653), 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 03:00:44,605 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 03:00:44,605 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 583 [2023-08-29 03:00:44,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 03:01:42,430 INFO L130 PetriNetUnfolder]: 300825/606799 cut-off events. [2023-08-29 03:01:42,430 INFO L131 PetriNetUnfolder]: For 167819/181555 co-relation queries the response was YES. [2023-08-29 03:01:45,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1316395 conditions, 606799 events. 300825/606799 cut-off events. For 167819/181555 co-relation queries the response was YES. Maximal size of possible extension queue 11767. Compared 7955104 event pairs, 93090 based on Foata normal form. 5845/556789 useless extension candidates. Maximal degree in co-relation 1316323. Up to 222733 conditions per place. [2023-08-29 03:01:47,462 INFO L137 encePairwiseOnDemand]: 547/583 looper letters, 431 selfloop transitions, 202 changer transitions 0/709 dead transitions. [2023-08-29 03:01:47,462 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 709 transitions, 3934 flow [2023-08-29 03:01:47,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 03:01:47,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 03:01:47,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2019 transitions. [2023-08-29 03:01:47,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5771869639794168 [2023-08-29 03:01:47,466 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2019 transitions. [2023-08-29 03:01:47,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2019 transitions. [2023-08-29 03:01:47,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 03:01:47,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2019 transitions. [2023-08-29 03:01:47,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 336.5) internal successors, (2019), 6 states have internal predecessors, (2019), 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 03:01:47,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 583.0) internal successors, (4081), 7 states have internal predecessors, (4081), 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 03:01:47,476 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 583.0) internal successors, (4081), 7 states have internal predecessors, (4081), 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 03:01:47,476 INFO L175 Difference]: Start difference. First operand has 195 places, 246 transitions, 938 flow. Second operand 6 states and 2019 transitions. [2023-08-29 03:01:47,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 709 transitions, 3934 flow [2023-08-29 03:01:48,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 709 transitions, 3856 flow, removed 29 selfloop flow, removed 10 redundant places. [2023-08-29 03:01:48,224 INFO L231 Difference]: Finished difference. Result has 194 places, 457 transitions, 2678 flow [2023-08-29 03:01:48,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=868, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2678, PETRI_PLACES=194, PETRI_TRANSITIONS=457} [2023-08-29 03:01:48,225 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, 33 predicate places. [2023-08-29 03:01:48,226 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 457 transitions, 2678 flow [2023-08-29 03:01:48,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 275.5) internal successors, (1653), 6 states have internal predecessors, (1653), 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 03:01:48,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 03:01:48,226 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 03:01:48,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-29 03:01:48,227 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-29 03:01:48,227 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 03:01:48,227 INFO L85 PathProgramCache]: Analyzing trace with hash 572834115, now seen corresponding path program 1 times [2023-08-29 03:01:48,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 03:01:48,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932895670] [2023-08-29 03:01:48,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 03:01:48,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 03:01:48,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 03:01:48,287 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 03:01:48,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 03:01:48,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932895670] [2023-08-29 03:01:48,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932895670] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 03:01:48,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571996094] [2023-08-29 03:01:48,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 03:01:48,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 03:01:48,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 03:01:48,295 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 03:01:48,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-29 03:01:48,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 03:01:48,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-29 03:01:48,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 03:01:48,437 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 03:01:48,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 03:01:48,473 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 03:01:48,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571996094] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 03:01:48,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 03:01:48,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-08-29 03:01:48,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319108385] [2023-08-29 03:01:48,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 03:01:48,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 03:01:48,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 03:01:48,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 03:01:48,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-08-29 03:01:48,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 583 [2023-08-29 03:01:48,502 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 457 transitions, 2678 flow. Second operand has 9 states, 9 states have (on average 316.6666666666667) internal successors, (2850), 9 states have internal predecessors, (2850), 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 03:01:48,503 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 03:01:48,503 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 583 [2023-08-29 03:01:48,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 03:01:50,086 INFO L130 PetriNetUnfolder]: 6112/14048 cut-off events. [2023-08-29 03:01:50,086 INFO L131 PetriNetUnfolder]: For 7253/7983 co-relation queries the response was YES. [2023-08-29 03:01:50,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36688 conditions, 14048 events. 6112/14048 cut-off events. For 7253/7983 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 132796 event pairs, 636 based on Foata normal form. 1759/14932 useless extension candidates. Maximal degree in co-relation 27715. Up to 7550 conditions per place. [2023-08-29 03:01:50,154 INFO L137 encePairwiseOnDemand]: 580/583 looper letters, 190 selfloop transitions, 3 changer transitions 0/377 dead transitions. [2023-08-29 03:01:50,154 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 377 transitions, 2336 flow [2023-08-29 03:01:50,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 03:01:50,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 03:01:50,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1666 transitions. [2023-08-29 03:01:50,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5715265866209263 [2023-08-29 03:01:50,158 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1666 transitions. [2023-08-29 03:01:50,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1666 transitions. [2023-08-29 03:01:50,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 03:01:50,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1666 transitions. [2023-08-29 03:01:50,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 333.2) internal successors, (1666), 5 states have internal predecessors, (1666), 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 03:01:50,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 583.0) internal successors, (3498), 6 states have internal predecessors, (3498), 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 03:01:50,169 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 583.0) internal successors, (3498), 6 states have internal predecessors, (3498), 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 03:01:50,169 INFO L175 Difference]: Start difference. First operand has 194 places, 457 transitions, 2678 flow. Second operand 5 states and 1666 transitions. [2023-08-29 03:01:50,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 377 transitions, 2336 flow [2023-08-29 03:01:50,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 377 transitions, 2330 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-29 03:01:50,198 INFO L231 Difference]: Finished difference. Result has 140 places, 280 transitions, 1522 flow [2023-08-29 03:01:50,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=1516, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1522, PETRI_PLACES=140, PETRI_TRANSITIONS=280} [2023-08-29 03:01:50,199 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, -21 predicate places. [2023-08-29 03:01:50,200 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 280 transitions, 1522 flow [2023-08-29 03:01:50,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 316.6666666666667) internal successors, (2850), 9 states have internal predecessors, (2850), 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 03:01:50,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 03:01:50,201 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 03:01:50,208 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-29 03:01:50,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-29 03:01:50,409 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-29 03:01:50,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 03:01:50,409 INFO L85 PathProgramCache]: Analyzing trace with hash -933125888, now seen corresponding path program 1 times [2023-08-29 03:01:50,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 03:01:50,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330981467] [2023-08-29 03:01:50,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 03:01:50,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 03:01:50,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 03:01:50,673 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 03:01:50,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 03:01:50,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330981467] [2023-08-29 03:01:50,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330981467] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 03:01:50,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 03:01:50,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 03:01:50,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762688691] [2023-08-29 03:01:50,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 03:01:50,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 03:01:50,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 03:01:50,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 03:01:50,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 03:01:50,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 583 [2023-08-29 03:01:50,996 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 280 transitions, 1522 flow. Second operand has 6 states, 6 states have (on average 248.16666666666666) internal successors, (1489), 6 states have internal predecessors, (1489), 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 03:01:50,997 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 03:01:50,997 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 583 [2023-08-29 03:01:50,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 03:01:54,551 INFO L130 PetriNetUnfolder]: 19938/34995 cut-off events. [2023-08-29 03:01:54,552 INFO L131 PetriNetUnfolder]: For 29465/30122 co-relation queries the response was YES. [2023-08-29 03:01:54,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100766 conditions, 34995 events. 19938/34995 cut-off events. For 29465/30122 co-relation queries the response was YES. Maximal size of possible extension queue 814. Compared 278162 event pairs, 12376 based on Foata normal form. 9/34248 useless extension candidates. Maximal degree in co-relation 55395. Up to 27361 conditions per place. [2023-08-29 03:01:54,759 INFO L137 encePairwiseOnDemand]: 556/583 looper letters, 396 selfloop transitions, 124 changer transitions 0/541 dead transitions. [2023-08-29 03:01:54,759 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 541 transitions, 3714 flow [2023-08-29 03:01:54,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 03:01:54,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 03:01:54,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1730 transitions. [2023-08-29 03:01:54,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.494568324757004 [2023-08-29 03:01:54,762 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1730 transitions. [2023-08-29 03:01:54,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1730 transitions. [2023-08-29 03:01:54,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 03:01:54,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1730 transitions. [2023-08-29 03:01:54,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 288.3333333333333) internal successors, (1730), 6 states have internal predecessors, (1730), 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 03:01:54,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 583.0) internal successors, (4081), 7 states have internal predecessors, (4081), 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 03:01:54,768 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 583.0) internal successors, (4081), 7 states have internal predecessors, (4081), 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 03:01:54,768 INFO L175 Difference]: Start difference. First operand has 140 places, 280 transitions, 1522 flow. Second operand 6 states and 1730 transitions. [2023-08-29 03:01:54,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 541 transitions, 3714 flow [2023-08-29 03:01:54,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 541 transitions, 3697 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-29 03:01:54,828 INFO L231 Difference]: Finished difference. Result has 146 places, 384 transitions, 2589 flow [2023-08-29 03:01:54,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=1517, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2589, PETRI_PLACES=146, PETRI_TRANSITIONS=384} [2023-08-29 03:01:54,829 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, -15 predicate places. [2023-08-29 03:01:54,829 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 384 transitions, 2589 flow [2023-08-29 03:01:54,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 248.16666666666666) internal successors, (1489), 6 states have internal predecessors, (1489), 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 03:01:54,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 03:01:54,830 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 03:01:54,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-29 03:01:54,830 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-29 03:01:54,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 03:01:54,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1834306618, now seen corresponding path program 1 times [2023-08-29 03:01:54,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 03:01:54,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3954507] [2023-08-29 03:01:54,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 03:01:54,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 03:01:54,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 03:01:55,099 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-08-29 03:01:55,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 03:01:55,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3954507] [2023-08-29 03:01:55,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3954507] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 03:01:55,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 03:01:55,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 03:01:55,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678840291] [2023-08-29 03:01:55,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 03:01:55,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 03:01:55,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 03:01:55,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 03:01:55,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 03:01:55,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 583 [2023-08-29 03:01:55,560 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 384 transitions, 2589 flow. Second operand has 6 states, 6 states have (on average 248.5) internal successors, (1491), 6 states have internal predecessors, (1491), 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 03:01:55,560 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 03:01:55,560 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 583 [2023-08-29 03:01:55,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 03:01:59,767 INFO L130 PetriNetUnfolder]: 21929/38576 cut-off events. [2023-08-29 03:01:59,767 INFO L131 PetriNetUnfolder]: For 38631/39327 co-relation queries the response was YES. [2023-08-29 03:01:59,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122197 conditions, 38576 events. 21929/38576 cut-off events. For 38631/39327 co-relation queries the response was YES. Maximal size of possible extension queue 952. Compared 315587 event pairs, 13044 based on Foata normal form. 18/37786 useless extension candidates. Maximal degree in co-relation 73764. Up to 30309 conditions per place. [2023-08-29 03:02:00,039 INFO L137 encePairwiseOnDemand]: 556/583 looper letters, 485 selfloop transitions, 147 changer transitions 0/658 dead transitions. [2023-08-29 03:02:00,039 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 658 transitions, 5209 flow [2023-08-29 03:02:00,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 03:02:00,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 03:02:00,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1721 transitions. [2023-08-29 03:02:00,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49199542595769014 [2023-08-29 03:02:00,041 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1721 transitions. [2023-08-29 03:02:00,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1721 transitions. [2023-08-29 03:02:00,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 03:02:00,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1721 transitions. [2023-08-29 03:02:00,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 286.8333333333333) internal successors, (1721), 6 states have internal predecessors, (1721), 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 03:02:00,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 583.0) internal successors, (4081), 7 states have internal predecessors, (4081), 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 03:02:00,047 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 583.0) internal successors, (4081), 7 states have internal predecessors, (4081), 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 03:02:00,047 INFO L175 Difference]: Start difference. First operand has 146 places, 384 transitions, 2589 flow. Second operand 6 states and 1721 transitions. [2023-08-29 03:02:00,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 658 transitions, 5209 flow [2023-08-29 03:02:00,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 658 transitions, 5087 flow, removed 61 selfloop flow, removed 0 redundant places. [2023-08-29 03:02:00,234 INFO L231 Difference]: Finished difference. Result has 155 places, 494 transitions, 3759 flow [2023-08-29 03:02:00,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=2483, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3759, PETRI_PLACES=155, PETRI_TRANSITIONS=494} [2023-08-29 03:02:00,235 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, -6 predicate places. [2023-08-29 03:02:00,235 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 494 transitions, 3759 flow [2023-08-29 03:02:00,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 248.5) internal successors, (1491), 6 states have internal predecessors, (1491), 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 03:02:00,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 03:02:00,235 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 03:02:00,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-29 03:02:00,235 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-29 03:02:00,236 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 03:02:00,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1491293096, now seen corresponding path program 1 times [2023-08-29 03:02:00,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 03:02:00,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786213515] [2023-08-29 03:02:00,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 03:02:00,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 03:02:00,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 03:02:00,418 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-29 03:02:00,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 03:02:00,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786213515] [2023-08-29 03:02:00,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786213515] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 03:02:00,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 03:02:00,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 03:02:00,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559462228] [2023-08-29 03:02:00,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 03:02:00,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 03:02:00,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 03:02:00,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 03:02:00,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-29 03:02:00,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 583 [2023-08-29 03:02:00,686 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 494 transitions, 3759 flow. Second operand has 5 states, 5 states have (on average 299.2) internal successors, (1496), 5 states have internal predecessors, (1496), 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 03:02:00,686 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 03:02:00,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 583 [2023-08-29 03:02:00,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 03:02:01,462 INFO L130 PetriNetUnfolder]: 1259/3667 cut-off events. [2023-08-29 03:02:01,462 INFO L131 PetriNetUnfolder]: For 2546/2546 co-relation queries the response was YES. [2023-08-29 03:02:01,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10748 conditions, 3667 events. 1259/3667 cut-off events. For 2546/2546 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 27222 event pairs, 444 based on Foata normal form. 207/3746 useless extension candidates. Maximal degree in co-relation 6820. Up to 1315 conditions per place. [2023-08-29 03:02:01,484 INFO L137 encePairwiseOnDemand]: 568/583 looper letters, 68 selfloop transitions, 15 changer transitions 9/146 dead transitions. [2023-08-29 03:02:01,484 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 146 transitions, 856 flow [2023-08-29 03:02:01,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 03:02:01,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 03:02:01,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1268 transitions. [2023-08-29 03:02:01,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5437392795883362 [2023-08-29 03:02:01,487 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1268 transitions. [2023-08-29 03:02:01,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1268 transitions. [2023-08-29 03:02:01,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 03:02:01,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1268 transitions. [2023-08-29 03:02:01,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 317.0) internal successors, (1268), 4 states have internal predecessors, (1268), 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 03:02:01,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 583.0) internal successors, (2915), 5 states have internal predecessors, (2915), 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 03:02:01,492 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 583.0) internal successors, (2915), 5 states have internal predecessors, (2915), 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 03:02:01,492 INFO L175 Difference]: Start difference. First operand has 155 places, 494 transitions, 3759 flow. Second operand 4 states and 1268 transitions. [2023-08-29 03:02:01,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 146 transitions, 856 flow [2023-08-29 03:02:01,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 146 transitions, 559 flow, removed 75 selfloop flow, removed 32 redundant places. [2023-08-29 03:02:01,519 INFO L231 Difference]: Finished difference. Result has 119 places, 114 transitions, 345 flow [2023-08-29 03:02:01,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=345, PETRI_PLACES=119, PETRI_TRANSITIONS=114} [2023-08-29 03:02:01,520 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, -42 predicate places. [2023-08-29 03:02:01,520 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 114 transitions, 345 flow [2023-08-29 03:02:01,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 299.2) internal successors, (1496), 5 states have internal predecessors, (1496), 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 03:02:01,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 03:02:01,521 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 03:02:01,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-29 03:02:01,521 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr3ASSERT_VIOLATIONDATA_RACE === [t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-29 03:02:01,522 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 03:02:01,522 INFO L85 PathProgramCache]: Analyzing trace with hash 2071932454, now seen corresponding path program 1 times [2023-08-29 03:02:01,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 03:02:01,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931018132] [2023-08-29 03:02:01,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 03:02:01,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 03:02:01,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 03:02:01,893 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 03:02:01,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 03:02:01,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931018132] [2023-08-29 03:02:01,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931018132] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 03:02:01,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 03:02:01,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 03:02:01,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927498883] [2023-08-29 03:02:01,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 03:02:01,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 03:02:01,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 03:02:01,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 03:02:01,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 03:02:02,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 583 [2023-08-29 03:02:02,302 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 114 transitions, 345 flow. Second operand has 6 states, 6 states have (on average 250.33333333333334) internal successors, (1502), 6 states have internal predecessors, (1502), 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 03:02:02,302 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 03:02:02,302 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 583 [2023-08-29 03:02:02,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 03:02:02,854 INFO L130 PetriNetUnfolder]: 2636/5201 cut-off events. [2023-08-29 03:02:02,854 INFO L131 PetriNetUnfolder]: For 1681/1687 co-relation queries the response was YES. [2023-08-29 03:02:02,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13576 conditions, 5201 events. 2636/5201 cut-off events. For 1681/1687 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 32413 event pairs, 2389 based on Foata normal form. 0/4954 useless extension candidates. Maximal degree in co-relation 4521. Up to 4606 conditions per place. [2023-08-29 03:02:02,879 INFO L137 encePairwiseOnDemand]: 577/583 looper letters, 106 selfloop transitions, 5 changer transitions 22/145 dead transitions. [2023-08-29 03:02:02,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 145 transitions, 723 flow [2023-08-29 03:02:02,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 03:02:02,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 03:02:02,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1580 transitions. [2023-08-29 03:02:02,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45168667810177243 [2023-08-29 03:02:02,883 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1580 transitions. [2023-08-29 03:02:02,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1580 transitions. [2023-08-29 03:02:02,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 03:02:02,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1580 transitions. [2023-08-29 03:02:02,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 263.3333333333333) internal successors, (1580), 6 states have internal predecessors, (1580), 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 03:02:02,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 583.0) internal successors, (4081), 7 states have internal predecessors, (4081), 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 03:02:02,891 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 583.0) internal successors, (4081), 7 states have internal predecessors, (4081), 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 03:02:02,891 INFO L175 Difference]: Start difference. First operand has 119 places, 114 transitions, 345 flow. Second operand 6 states and 1580 transitions. [2023-08-29 03:02:02,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 145 transitions, 723 flow [2023-08-29 03:02:02,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 145 transitions, 722 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 03:02:02,898 INFO L231 Difference]: Finished difference. Result has 122 places, 99 transitions, 301 flow [2023-08-29 03:02:02,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=301, PETRI_PLACES=122, PETRI_TRANSITIONS=99} [2023-08-29 03:02:02,899 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, -39 predicate places. [2023-08-29 03:02:02,899 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 99 transitions, 301 flow [2023-08-29 03:02:02,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 250.33333333333334) internal successors, (1502), 6 states have internal predecessors, (1502), 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 03:02:02,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 03:02:02,900 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 03:02:02,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-29 03:02:02,900 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr3ASSERT_VIOLATIONDATA_RACE === [t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-29 03:02:02,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 03:02:02,901 INFO L85 PathProgramCache]: Analyzing trace with hash -651172948, now seen corresponding path program 1 times [2023-08-29 03:02:02,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 03:02:02,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669065406] [2023-08-29 03:02:02,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 03:02:02,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 03:02:02,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 03:02:03,233 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-08-29 03:02:03,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 03:02:03,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669065406] [2023-08-29 03:02:03,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669065406] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 03:02:03,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 03:02:03,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 03:02:03,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846624271] [2023-08-29 03:02:03,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 03:02:03,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 03:02:03,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 03:02:03,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 03:02:03,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 03:02:03,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 583 [2023-08-29 03:02:03,541 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 99 transitions, 301 flow. Second operand has 6 states, 6 states have (on average 250.66666666666666) internal successors, (1504), 6 states have internal predecessors, (1504), 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 03:02:03,541 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 03:02:03,541 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 583 [2023-08-29 03:02:03,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 03:02:03,896 INFO L130 PetriNetUnfolder]: 1628/3287 cut-off events. [2023-08-29 03:02:03,897 INFO L131 PetriNetUnfolder]: For 1071/1071 co-relation queries the response was YES. [2023-08-29 03:02:03,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8508 conditions, 3287 events. 1628/3287 cut-off events. For 1071/1071 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 18451 event pairs, 1441 based on Foata normal form. 0/3193 useless extension candidates. Maximal degree in co-relation 7007. Up to 2800 conditions per place. [2023-08-29 03:02:03,904 INFO L137 encePairwiseOnDemand]: 577/583 looper letters, 0 selfloop transitions, 0 changer transitions 122/122 dead transitions. [2023-08-29 03:02:03,904 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 122 transitions, 591 flow [2023-08-29 03:02:03,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 03:02:03,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 03:02:03,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1566 transitions. [2023-08-29 03:02:03,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44768439108061747 [2023-08-29 03:02:03,905 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1566 transitions. [2023-08-29 03:02:03,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1566 transitions. [2023-08-29 03:02:03,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 03:02:03,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1566 transitions. [2023-08-29 03:02:03,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 261.0) internal successors, (1566), 6 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 03:02:03,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 583.0) internal successors, (4081), 7 states have internal predecessors, (4081), 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 03:02:03,909 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 583.0) internal successors, (4081), 7 states have internal predecessors, (4081), 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 03:02:03,909 INFO L175 Difference]: Start difference. First operand has 122 places, 99 transitions, 301 flow. Second operand 6 states and 1566 transitions. [2023-08-29 03:02:03,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 122 transitions, 591 flow [2023-08-29 03:02:03,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 122 transitions, 565 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-08-29 03:02:03,914 INFO L231 Difference]: Finished difference. Result has 110 places, 0 transitions, 0 flow [2023-08-29 03:02:03,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=583, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=110, PETRI_TRANSITIONS=0} [2023-08-29 03:02:03,914 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, -51 predicate places. [2023-08-29 03:02:03,915 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 0 transitions, 0 flow [2023-08-29 03:02:03,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 250.66666666666666) internal successors, (1504), 6 states have internal predecessors, (1504), 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 03:02:03,915 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (20 of 21 remaining) [2023-08-29 03:02:03,915 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (19 of 21 remaining) [2023-08-29 03:02:03,915 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (18 of 21 remaining) [2023-08-29 03:02:03,916 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (17 of 21 remaining) [2023-08-29 03:02:03,916 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (16 of 21 remaining) [2023-08-29 03:02:03,916 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 21 remaining) [2023-08-29 03:02:03,916 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (14 of 21 remaining) [2023-08-29 03:02:03,916 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (13 of 21 remaining) [2023-08-29 03:02:03,916 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (12 of 21 remaining) [2023-08-29 03:02:03,916 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (11 of 21 remaining) [2023-08-29 03:02:03,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (10 of 21 remaining) [2023-08-29 03:02:03,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (9 of 21 remaining) [2023-08-29 03:02:03,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (8 of 21 remaining) [2023-08-29 03:02:03,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (7 of 21 remaining) [2023-08-29 03:02:03,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (6 of 21 remaining) [2023-08-29 03:02:03,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 21 remaining) [2023-08-29 03:02:03,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (4 of 21 remaining) [2023-08-29 03:02:03,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (3 of 21 remaining) [2023-08-29 03:02:03,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 21 remaining) [2023-08-29 03:02:03,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 21 remaining) [2023-08-29 03:02:03,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (0 of 21 remaining) [2023-08-29 03:02:03,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-29 03:02:03,918 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 03:02:03,919 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-29 03:02:03,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 325 places, 365 transitions, 748 flow [2023-08-29 03:02:03,984 INFO L130 PetriNetUnfolder]: 75/613 cut-off events. [2023-08-29 03:02:03,984 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 03:02:03,993 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 03:02:03,993 INFO L82 GeneralOperation]: Start removeDead. Operand has 325 places, 365 transitions, 748 flow [2023-08-29 03:02:03,996 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 325 places, 365 transitions, 748 flow [2023-08-29 03:02:03,996 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 03:02:03,996 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 325 places, 365 transitions, 748 flow [2023-08-29 03:02:03,997 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 325 places, 365 transitions, 748 flow [2023-08-29 03:02:03,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 325 places, 365 transitions, 748 flow [2023-08-29 03:02:04,050 INFO L130 PetriNetUnfolder]: 75/613 cut-off events. [2023-08-29 03:02:04,050 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 03:02:04,056 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 03:02:04,076 INFO L119 LiptonReduction]: Number of co-enabled transitions 69084 [2023-08-29 03:02:07,012 INFO L134 LiptonReduction]: Checked pairs total: 252197 [2023-08-29 03:02:07,012 INFO L136 LiptonReduction]: Total number of compositions: 221 [2023-08-29 03:02:07,014 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-29 03:02:07,014 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;@1d659884, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 03:02:07,014 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-29 03:02:07,021 INFO L130 PetriNetUnfolder]: 21/113 cut-off events. [2023-08-29 03:02:07,021 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 03:02:07,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 03:02:07,022 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2023-08-29 03:02:07,022 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-29 03:02:07,022 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 03:02:07,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1839314886, now seen corresponding path program 1 times [2023-08-29 03:02:07,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 03:02:07,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589855682] [2023-08-29 03:02:07,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 03:02:07,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 03:02:07,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 03:02:07,043 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-29 03:02:07,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 03:02:07,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589855682] [2023-08-29 03:02:07,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589855682] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 03:02:07,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 03:02:07,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 03:02:07,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305809047] [2023-08-29 03:02:07,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 03:02:07,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 03:02:07,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 03:02:07,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 03:02:07,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 03:02:07,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 586 [2023-08-29 03:02:07,054 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 193 transitions, 404 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 03:02:07,054 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 03:02:07,055 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 586 [2023-08-29 03:02:07,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 03:02:09,050 INFO L130 PetriNetUnfolder]: 14724/34920 cut-off events. [2023-08-29 03:02:09,050 INFO L131 PetriNetUnfolder]: For 172/220 co-relation queries the response was YES. [2023-08-29 03:02:09,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56293 conditions, 34920 events. 14724/34920 cut-off events. For 172/220 co-relation queries the response was YES. Maximal size of possible extension queue 884. Compared 376679 event pairs, 13600 based on Foata normal form. 4190/36189 useless extension candidates. Maximal degree in co-relation 26706. Up to 21259 conditions per place. [2023-08-29 03:02:09,153 INFO L137 encePairwiseOnDemand]: 552/586 looper letters, 41 selfloop transitions, 2 changer transitions 58/163 dead transitions. [2023-08-29 03:02:09,153 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 163 transitions, 472 flow [2023-08-29 03:02:09,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 03:02:09,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 03:02:09,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1041 transitions. [2023-08-29 03:02:09,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5921501706484642 [2023-08-29 03:02:09,155 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1041 transitions. [2023-08-29 03:02:09,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1041 transitions. [2023-08-29 03:02:09,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 03:02:09,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1041 transitions. [2023-08-29 03:02:09,156 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 03:02:09,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 586.0) internal successors, (2344), 4 states have internal predecessors, (2344), 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 03:02:09,157 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 586.0) internal successors, (2344), 4 states have internal predecessors, (2344), 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 03:02:09,157 INFO L175 Difference]: Start difference. First operand has 161 places, 193 transitions, 404 flow. Second operand 3 states and 1041 transitions. [2023-08-29 03:02:09,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 163 transitions, 472 flow [2023-08-29 03:02:09,158 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 03:02:09,159 INFO L231 Difference]: Finished difference. Result has 164 places, 105 transitions, 232 flow [2023-08-29 03:02:09,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, 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=232, PETRI_PLACES=164, PETRI_TRANSITIONS=105} [2023-08-29 03:02:09,160 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, 3 predicate places. [2023-08-29 03:02:09,160 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 105 transitions, 232 flow [2023-08-29 03:02:09,160 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 03:02:09,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 03:02:09,160 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-29 03:02:09,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-29 03:02:09,161 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-29 03:02:09,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 03:02:09,161 INFO L85 PathProgramCache]: Analyzing trace with hash -657295060, now seen corresponding path program 1 times [2023-08-29 03:02:09,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 03:02:09,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189591156] [2023-08-29 03:02:09,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 03:02:09,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 03:02:09,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 03:02:09,186 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 03:02:09,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 03:02:09,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189591156] [2023-08-29 03:02:09,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189591156] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 03:02:09,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497888938] [2023-08-29 03:02:09,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 03:02:09,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 03:02:09,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 03:02:09,189 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 03:02:09,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-29 03:02:09,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 03:02:09,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 03:02:09,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 03:02:09,310 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 03:02:09,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 03:02:09,320 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 03:02:09,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497888938] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 03:02:09,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 03:02:09,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 03:02:09,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239746859] [2023-08-29 03:02:09,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 03:02:09,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 03:02:09,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 03:02:09,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 03:02:09,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 03:02:09,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 586 [2023-08-29 03:02:09,339 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 105 transitions, 232 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 03:02:09,339 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 03:02:09,339 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 586 [2023-08-29 03:02:09,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 03:02:09,707 INFO L130 PetriNetUnfolder]: 2338/5919 cut-off events. [2023-08-29 03:02:09,707 INFO L131 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2023-08-29 03:02:09,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9575 conditions, 5919 events. 2338/5919 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 48177 event pairs, 2193 based on Foata normal form. 0/5319 useless extension candidates. Maximal degree in co-relation 9562. Up to 3567 conditions per place. [2023-08-29 03:02:09,733 INFO L137 encePairwiseOnDemand]: 583/586 looper letters, 41 selfloop transitions, 5 changer transitions 0/108 dead transitions. [2023-08-29 03:02:09,734 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 108 transitions, 336 flow [2023-08-29 03:02:09,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 03:02:09,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 03:02:09,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1933 transitions. [2023-08-29 03:02:09,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5497724687144482 [2023-08-29 03:02:09,736 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1933 transitions. [2023-08-29 03:02:09,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1933 transitions. [2023-08-29 03:02:09,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 03:02:09,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1933 transitions. [2023-08-29 03:02:09,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 322.1666666666667) internal successors, (1933), 6 states have internal predecessors, (1933), 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 03:02:09,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 586.0) internal successors, (4102), 7 states have internal predecessors, (4102), 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 03:02:09,742 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 586.0) internal successors, (4102), 7 states have internal predecessors, (4102), 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 03:02:09,742 INFO L175 Difference]: Start difference. First operand has 164 places, 105 transitions, 232 flow. Second operand 6 states and 1933 transitions. [2023-08-29 03:02:09,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 108 transitions, 336 flow [2023-08-29 03:02:09,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 108 transitions, 330 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-29 03:02:09,744 INFO L231 Difference]: Finished difference. Result has 116 places, 108 transitions, 262 flow [2023-08-29 03:02:09,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=262, PETRI_PLACES=116, PETRI_TRANSITIONS=108} [2023-08-29 03:02:09,745 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, -45 predicate places. [2023-08-29 03:02:09,745 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 108 transitions, 262 flow [2023-08-29 03:02:09,745 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 03:02:09,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 03:02:09,746 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1] [2023-08-29 03:02:09,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-29 03:02:09,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-08-29 03:02:09,950 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-29 03:02:09,951 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 03:02:09,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1503923014, now seen corresponding path program 2 times [2023-08-29 03:02:09,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 03:02:09,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131070460] [2023-08-29 03:02:09,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 03:02:09,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 03:02:09,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 03:02:10,010 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 03:02:10,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 03:02:10,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131070460] [2023-08-29 03:02:10,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131070460] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 03:02:10,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195030423] [2023-08-29 03:02:10,011 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 03:02:10,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 03:02:10,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 03:02:10,013 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 03:02:10,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-29 03:02:10,121 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 03:02:10,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 03:02:10,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 03:02:10,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 03:02:10,138 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 03:02:10,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 03:02:10,185 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 03:02:10,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195030423] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 03:02:10,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 03:02:10,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-29 03:02:10,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257440922] [2023-08-29 03:02:10,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 03:02:10,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-29 03:02:10,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 03:02:10,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-29 03:02:10,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-29 03:02:10,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 586 [2023-08-29 03:02:10,225 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 108 transitions, 262 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 03:02:10,225 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 03:02:10,226 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 586 [2023-08-29 03:02:10,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 03:02:10,645 INFO L130 PetriNetUnfolder]: 2338/5925 cut-off events. [2023-08-29 03:02:10,645 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2023-08-29 03:02:10,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9604 conditions, 5925 events. 2338/5925 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 48252 event pairs, 2193 based on Foata normal form. 6/5332 useless extension candidates. Maximal degree in co-relation 9545. Up to 3567 conditions per place. [2023-08-29 03:02:10,666 INFO L137 encePairwiseOnDemand]: 583/586 looper letters, 41 selfloop transitions, 11 changer transitions 0/114 dead transitions. [2023-08-29 03:02:10,666 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 114 transitions, 402 flow [2023-08-29 03:02:10,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 03:02:10,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 03:02:10,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3826 transitions. [2023-08-29 03:02:10,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5440841865756542 [2023-08-29 03:02:10,669 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3826 transitions. [2023-08-29 03:02:10,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3826 transitions. [2023-08-29 03:02:10,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 03:02:10,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3826 transitions. [2023-08-29 03:02:10,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 318.8333333333333) internal successors, (3826), 12 states have internal predecessors, (3826), 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 03:02:10,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 586.0) internal successors, (7618), 13 states have internal predecessors, (7618), 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 03:02:10,678 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 586.0) internal successors, (7618), 13 states have internal predecessors, (7618), 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 03:02:10,678 INFO L175 Difference]: Start difference. First operand has 116 places, 108 transitions, 262 flow. Second operand 12 states and 3826 transitions. [2023-08-29 03:02:10,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 114 transitions, 402 flow [2023-08-29 03:02:10,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 114 transitions, 388 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-29 03:02:10,680 INFO L231 Difference]: Finished difference. Result has 132 places, 114 transitions, 332 flow [2023-08-29 03:02:10,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=332, PETRI_PLACES=132, PETRI_TRANSITIONS=114} [2023-08-29 03:02:10,680 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, -29 predicate places. [2023-08-29 03:02:10,680 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 114 transitions, 332 flow [2023-08-29 03:02:10,681 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 03:02:10,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 03:02:10,681 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2023-08-29 03:02:10,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-29 03:02:10,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-29 03:02:10,882 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-29 03:02:10,882 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 03:02:10,882 INFO L85 PathProgramCache]: Analyzing trace with hash -246202502, now seen corresponding path program 3 times [2023-08-29 03:02:10,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 03:02:10,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576386811] [2023-08-29 03:02:10,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 03:02:10,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 03:02:10,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 03:02:10,898 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 03:02:10,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 03:02:10,915 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 03:02:10,915 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 03:02:10,915 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-29 03:02:10,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-29 03:02:10,916 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2023-08-29 03:02:10,916 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-29 03:02:10,916 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 03:02:10,916 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-29 03:02:10,959 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-29 03:02:10,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 416 places, 468 transitions, 966 flow [2023-08-29 03:02:11,080 INFO L130 PetriNetUnfolder]: 110/898 cut-off events. [2023-08-29 03:02:11,080 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-29 03:02:11,096 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 03:02:11,096 INFO L82 GeneralOperation]: Start removeDead. Operand has 416 places, 468 transitions, 966 flow [2023-08-29 03:02:11,104 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 416 places, 468 transitions, 966 flow [2023-08-29 03:02:11,105 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 03:02:11,105 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 416 places, 468 transitions, 966 flow [2023-08-29 03:02:11,105 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 416 places, 468 transitions, 966 flow [2023-08-29 03:02:11,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 416 places, 468 transitions, 966 flow [2023-08-29 03:02:11,238 INFO L130 PetriNetUnfolder]: 110/898 cut-off events. [2023-08-29 03:02:11,238 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-29 03:02:11,260 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 03:02:11,311 INFO L119 LiptonReduction]: Number of co-enabled transitions 135138 [2023-08-29 03:02:15,049 INFO L134 LiptonReduction]: Checked pairs total: 495151 [2023-08-29 03:02:15,049 INFO L136 LiptonReduction]: Total number of compositions: 276 [2023-08-29 03:02:15,050 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 03:02:15,051 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;@1d659884, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 03:02:15,051 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2023-08-29 03:02:15,055 INFO L130 PetriNetUnfolder]: 14/73 cut-off events. [2023-08-29 03:02:15,055 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 03:02:15,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 03:02:15,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 03:02:15,056 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-29 03:02:15,056 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 03:02:15,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1445152044, now seen corresponding path program 1 times [2023-08-29 03:02:15,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 03:02:15,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481184509] [2023-08-29 03:02:15,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 03:02:15,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 03:02:15,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 03:02:15,079 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 03:02:15,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 03:02:15,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481184509] [2023-08-29 03:02:15,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481184509] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 03:02:15,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 03:02:15,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 03:02:15,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585626642] [2023-08-29 03:02:15,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 03:02:15,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 03:02:15,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 03:02:15,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 03:02:15,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 03:02:15,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 403 out of 744 [2023-08-29 03:02:15,089 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 03:02:15,090 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 03:02:15,090 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 403 of 744 [2023-08-29 03:02:15,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 03:03:19,603 INFO L130 PetriNetUnfolder]: 402194/764635 cut-off events. [2023-08-29 03:03:19,603 INFO L131 PetriNetUnfolder]: For 5233/6863 co-relation queries the response was YES. [2023-08-29 03:03:22,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1283793 conditions, 764635 events. 402194/764635 cut-off events. For 5233/6863 co-relation queries the response was YES. Maximal size of possible extension queue 15653. Compared 10004409 event pairs, 377214 based on Foata normal form. 85737/789723 useless extension candidates. Maximal degree in co-relation 297401. Up to 516526 conditions per place. [2023-08-29 03:03:25,121 INFO L137 encePairwiseOnDemand]: 700/744 looper letters, 81 selfloop transitions, 2 changer transitions 0/212 dead transitions. [2023-08-29 03:03:25,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 212 transitions, 620 flow [2023-08-29 03:03:25,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 03:03:25,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 03:03:25,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1334 transitions. [2023-08-29 03:03:25,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5976702508960573 [2023-08-29 03:03:25,123 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1334 transitions. [2023-08-29 03:03:25,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1334 transitions. [2023-08-29 03:03:25,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 03:03:25,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1334 transitions. [2023-08-29 03:03:25,124 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 03:03:25,125 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 03:03:25,125 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 03:03:25,125 INFO L175 Difference]: Start difference. First operand has 210 places, 252 transitions, 534 flow. Second operand 3 states and 1334 transitions. [2023-08-29 03:03:25,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 212 transitions, 620 flow [2023-08-29 03:03:25,128 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 03:03:25,130 INFO L231 Difference]: Finished difference. Result has 213 places, 212 transitions, 464 flow [2023-08-29 03:03:25,130 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 03:03:25,130 INFO L281 CegarLoopForPetriNet]: 210 programPoint places, 3 predicate places. [2023-08-29 03:03:25,130 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 212 transitions, 464 flow [2023-08-29 03:03:25,131 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 03:03:25,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 03:03:25,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 03:03:25,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-29 03:03:25,131 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-29 03:03:25,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 03:03:25,132 INFO L85 PathProgramCache]: Analyzing trace with hash 667184279, now seen corresponding path program 1 times [2023-08-29 03:03:25,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 03:03:25,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622572315] [2023-08-29 03:03:25,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 03:03:25,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 03:03:25,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 03:03:25,168 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 03:03:25,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 03:03:25,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622572315] [2023-08-29 03:03:25,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622572315] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 03:03:25,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059260379] [2023-08-29 03:03:25,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 03:03:25,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 03:03:25,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 03:03:25,177 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 03:03:25,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-29 03:03:25,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 03:03:25,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-29 03:03:25,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 03:03:25,314 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 03:03:25,315 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 03:03:25,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059260379] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 03:03:25,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 03:03:25,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-29 03:03:25,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172134355] [2023-08-29 03:03:25,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 03:03:25,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 03:03:25,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 03:03:25,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 03:03:25,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 03:03:25,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 403 out of 744 [2023-08-29 03:03:25,325 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 03:03:25,325 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 03:03:25,325 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 403 of 744 [2023-08-29 03:03:25,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 03:04:32,961 INFO L130 PetriNetUnfolder]: 397598/761929 cut-off events. [2023-08-29 03:04:32,961 INFO L131 PetriNetUnfolder]: For 6007/7375 co-relation queries the response was YES. [2023-08-29 03:04:35,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1281317 conditions, 761929 events. 397598/761929 cut-off events. For 6007/7375 co-relation queries the response was YES. Maximal size of possible extension queue 15631. Compared 10078601 event pairs, 247402 based on Foata normal form. 0/698855 useless extension candidates. Maximal degree in co-relation 1281303. Up to 516490 conditions per place. [2023-08-29 03:04:38,923 INFO L137 encePairwiseOnDemand]: 741/744 looper letters, 100 selfloop transitions, 2 changer transitions 0/231 dead transitions. [2023-08-29 03:04:38,923 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 231 transitions, 706 flow [2023-08-29 03:04:38,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 03:04:38,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 03:04:38,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1311 transitions. [2023-08-29 03:04:38,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5873655913978495 [2023-08-29 03:04:38,925 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1311 transitions. [2023-08-29 03:04:38,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1311 transitions. [2023-08-29 03:04:38,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 03:04:38,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1311 transitions. [2023-08-29 03:04:38,926 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 03:04:38,927 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 03:04:38,928 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 03:04:38,928 INFO L175 Difference]: Start difference. First operand has 213 places, 212 transitions, 464 flow. Second operand 3 states and 1311 transitions. [2023-08-29 03:04:38,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 231 transitions, 706 flow [2023-08-29 03:04:38,930 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 03:04:38,931 INFO L231 Difference]: Finished difference. Result has 215 places, 213 transitions, 472 flow [2023-08-29 03:04:38,932 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 03:04:38,932 INFO L281 CegarLoopForPetriNet]: 210 programPoint places, 5 predicate places. [2023-08-29 03:04:38,932 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 213 transitions, 472 flow [2023-08-29 03:04:38,932 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 03:04:38,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 03:04:38,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 03:04:38,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-29 03:04:39,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 03:04:39,133 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-29 03:04:39,133 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 03:04:39,133 INFO L85 PathProgramCache]: Analyzing trace with hash 244899031, now seen corresponding path program 1 times [2023-08-29 03:04:39,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 03:04:39,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851723439] [2023-08-29 03:04:39,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 03:04:39,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 03:04:39,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 03:04:39,161 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 03:04:39,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 03:04:39,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851723439] [2023-08-29 03:04:39,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851723439] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 03:04:39,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600226997] [2023-08-29 03:04:39,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 03:04:39,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 03:04:39,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 03:04:39,163 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 03:04:39,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-29 03:04:39,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 03:04:39,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 03:04:39,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 03:04:39,295 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 03:04:39,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 03:04:39,309 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 03:04:39,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600226997] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 03:04:39,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 03:04:39,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 03:04:39,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529516974] [2023-08-29 03:04:39,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 03:04:39,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 03:04:39,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 03:04:39,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 03:04:39,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 03:04:39,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 402 out of 744 [2023-08-29 03:04:39,341 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 03:04:39,341 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 03:04:39,341 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 402 of 744 [2023-08-29 03:04:39,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 03:05:50,862 INFO L130 PetriNetUnfolder]: 403391/766306 cut-off events. [2023-08-29 03:05:50,862 INFO L131 PetriNetUnfolder]: For 17816/18802 co-relation queries the response was YES. [2023-08-29 03:05:54,166 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 15693. Compared 10038622 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 03:05:57,539 INFO L137 encePairwiseOnDemand]: 741/744 looper letters, 82 selfloop transitions, 5 changer transitions 0/216 dead transitions. [2023-08-29 03:05:57,539 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 216 transitions, 658 flow [2023-08-29 03:05:57,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 03:05:57,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 03:05:57,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2501 transitions. [2023-08-29 03:05:57,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5602598566308243 [2023-08-29 03:05:57,542 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2501 transitions. [2023-08-29 03:05:57,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2501 transitions. [2023-08-29 03:05:57,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 03:05:57,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2501 transitions. [2023-08-29 03:05:57,546 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 03:05:57,549 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 03:05:57,550 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 03:05:57,550 INFO L175 Difference]: Start difference. First operand has 215 places, 213 transitions, 472 flow. Second operand 6 states and 2501 transitions. [2023-08-29 03:05:57,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 216 transitions, 658 flow [2023-08-29 03:05:57,557 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 03:05:57,560 INFO L231 Difference]: Finished difference. Result has 222 places, 216 transitions, 506 flow [2023-08-29 03:05:57,560 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 03:05:57,561 INFO L281 CegarLoopForPetriNet]: 210 programPoint places, 12 predicate places. [2023-08-29 03:05:57,561 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 216 transitions, 506 flow [2023-08-29 03:05:57,562 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 03:05:57,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 03:05:57,562 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 03:05:57,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-29 03:05:57,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 03:05:57,767 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-29 03:05:57,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 03:05:57,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1236063606, now seen corresponding path program 2 times [2023-08-29 03:05:57,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 03:05:57,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440901895] [2023-08-29 03:05:57,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 03:05:57,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 03:05:57,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 03:05:57,847 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 03:05:57,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 03:05:57,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440901895] [2023-08-29 03:05:57,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440901895] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 03:05:57,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613653412] [2023-08-29 03:05:57,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 03:05:57,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 03:05:57,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 03:05:57,849 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 03:05:57,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-29 03:05:57,978 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 03:05:57,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 03:05:57,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-29 03:05:57,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 03:05:57,987 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 03:05:57,999 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 03:05:58,018 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 03:05:58,018 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 03:05:58,041 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 03:05:58,042 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 03:05:58,062 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 03:05:58,062 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 03:05:58,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613653412] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 03:05:58,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 03:05:58,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-08-29 03:05:58,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885574831] [2023-08-29 03:05:58,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 03:05:58,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 03:05:58,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 03:05:58,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 03:05:58,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-08-29 03:05:58,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 744 [2023-08-29 03:05:58,691 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 03:05:58,691 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 03:05:58,691 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 744 [2023-08-29 03:05:58,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand