./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_71-funloop_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_71-funloop_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bde6fe221f69c3fccb0f7c90e011f0b13ab5ca582ddcd328a459cbb512a8fd7f --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 18:25:57,560 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 18:25:57,562 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 18:25:57,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 18:25:57,596 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 18:25:57,598 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 18:25:57,600 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 18:25:57,603 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 18:25:57,605 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 18:25:57,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 18:25:57,610 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 18:25:57,612 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 18:25:57,612 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 18:25:57,615 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 18:25:57,617 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 18:25:57,620 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 18:25:57,621 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 18:25:57,623 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 18:25:57,624 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 18:25:57,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 18:25:57,631 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 18:25:57,632 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 18:25:57,633 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 18:25:57,634 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 18:25:57,640 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 18:25:57,640 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 18:25:57,641 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 18:25:57,643 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 18:25:57,643 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 18:25:57,644 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 18:25:57,645 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 18:25:57,646 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 18:25:57,648 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 18:25:57,649 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 18:25:57,649 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 18:25:57,650 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 18:25:57,650 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 18:25:57,651 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 18:25:57,651 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 18:25:57,651 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 18:25:57,652 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 18:25:57,654 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 18:25:57,693 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 18:25:57,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 18:25:57,694 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 18:25:57,694 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 18:25:57,695 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 18:25:57,695 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 18:25:57,696 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 18:25:57,696 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 18:25:57,696 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 18:25:57,697 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 18:25:57,697 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 18:25:57,698 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 18:25:57,698 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 18:25:57,698 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 18:25:57,699 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 18:25:57,699 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 18:25:57,699 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 18:25:57,699 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 18:25:57,699 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 18:25:57,700 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 18:25:57,700 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 18:25:57,700 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 18:25:57,700 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 18:25:57,701 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 18:25:57,701 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 18:25:57,701 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 18:25:57,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 18:25:57,701 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 18:25:57,702 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 18:25:57,702 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 18:25:57,702 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 18:25:57,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 18:25:57,703 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 18:25:57,703 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 18:25:57,703 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 18:25:57,703 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 18:25:57,704 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 18:25:57,704 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bde6fe221f69c3fccb0f7c90e011f0b13ab5ca582ddcd328a459cbb512a8fd7f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-29 18:25:58,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 18:25:58,050 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 18:25:58,052 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 18:25:58,053 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 18:25:58,053 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 18:25:58,054 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_71-funloop_racing.i [2023-08-29 18:25:59,177 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 18:25:59,500 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 18:25:59,500 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_71-funloop_racing.i [2023-08-29 18:25:59,515 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33ab01ea8/b8d644704e104a0d836a7eb939793fa4/FLAG3f8164f78 [2023-08-29 18:25:59,532 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33ab01ea8/b8d644704e104a0d836a7eb939793fa4 [2023-08-29 18:25:59,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 18:25:59,536 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 18:25:59,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 18:25:59,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 18:25:59,542 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 18:25:59,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:25:59" (1/1) ... [2023-08-29 18:25:59,545 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38407a9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:25:59, skipping insertion in model container [2023-08-29 18:25:59,545 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:25:59" (1/1) ... [2023-08-29 18:25:59,550 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 18:25:59,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 18:26:00,027 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_71-funloop_racing.i[41323,41336] [2023-08-29 18:26:00,066 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 18:26:00,088 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 18:26:00,132 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_71-funloop_racing.i[41323,41336] [2023-08-29 18:26:00,182 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 18:26:00,242 INFO L208 MainTranslator]: Completed translation [2023-08-29 18:26:00,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:26:00 WrapperNode [2023-08-29 18:26:00,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 18:26:00,244 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 18:26:00,244 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 18:26:00,245 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 18:26:00,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:26:00" (1/1) ... [2023-08-29 18:26:00,289 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:26:00" (1/1) ... [2023-08-29 18:26:00,329 INFO L138 Inliner]: procedures = 271, calls = 40, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 339 [2023-08-29 18:26:00,330 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 18:26:00,331 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 18:26:00,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 18:26:00,332 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 18:26:00,339 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:26:00" (1/1) ... [2023-08-29 18:26:00,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:26:00" (1/1) ... [2023-08-29 18:26:00,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:26:00" (1/1) ... [2023-08-29 18:26:00,357 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:26:00" (1/1) ... [2023-08-29 18:26:00,388 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:26:00" (1/1) ... [2023-08-29 18:26:00,396 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:26:00" (1/1) ... [2023-08-29 18:26:00,401 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:26:00" (1/1) ... [2023-08-29 18:26:00,410 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:26:00" (1/1) ... [2023-08-29 18:26:00,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 18:26:00,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 18:26:00,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 18:26:00,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 18:26:00,415 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:26:00" (1/1) ... [2023-08-29 18:26:00,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 18:26:00,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:26:00,440 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 18:26:00,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 18:26:00,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 18:26:00,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 18:26:00,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 18:26:00,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 18:26:00,476 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 18:26:00,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 18:26:00,477 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 18:26:00,477 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 18:26:00,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 18:26:00,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 18:26:00,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 18:26:00,479 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 18:26:00,652 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 18:26:00,655 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 18:26:01,185 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 18:26:01,192 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 18:26:01,193 INFO L302 CfgBuilder]: Removed 35 assume(true) statements. [2023-08-29 18:26:01,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:26:01 BoogieIcfgContainer [2023-08-29 18:26:01,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 18:26:01,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 18:26:01,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 18:26:01,203 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 18:26:01,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 06:25:59" (1/3) ... [2023-08-29 18:26:01,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69723fb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:26:01, skipping insertion in model container [2023-08-29 18:26:01,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:26:00" (2/3) ... [2023-08-29 18:26:01,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69723fb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:26:01, skipping insertion in model container [2023-08-29 18:26:01,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:26:01" (3/3) ... [2023-08-29 18:26:01,205 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_71-funloop_racing.i [2023-08-29 18:26:01,212 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 18:26:01,220 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 18:26:01,220 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-08-29 18:26:01,220 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 18:26:01,329 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-29 18:26:01,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 306 places, 348 transitions, 704 flow [2023-08-29 18:26:01,548 INFO L130 PetriNetUnfolder]: 73/552 cut-off events. [2023-08-29 18:26:01,549 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:26:01,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 558 conditions, 552 events. 73/552 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2937 event pairs, 0 based on Foata normal form. 0/449 useless extension candidates. Maximal degree in co-relation 311. Up to 8 conditions per place. [2023-08-29 18:26:01,562 INFO L82 GeneralOperation]: Start removeDead. Operand has 306 places, 348 transitions, 704 flow [2023-08-29 18:26:01,574 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 306 places, 348 transitions, 704 flow [2023-08-29 18:26:01,576 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:26:01,587 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 306 places, 348 transitions, 704 flow [2023-08-29 18:26:01,589 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 306 places, 348 transitions, 704 flow [2023-08-29 18:26:01,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 306 places, 348 transitions, 704 flow [2023-08-29 18:26:01,662 INFO L130 PetriNetUnfolder]: 73/552 cut-off events. [2023-08-29 18:26:01,663 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:26:01,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 558 conditions, 552 events. 73/552 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2937 event pairs, 0 based on Foata normal form. 0/449 useless extension candidates. Maximal degree in co-relation 311. Up to 8 conditions per place. [2023-08-29 18:26:01,694 INFO L119 LiptonReduction]: Number of co-enabled transitions 42840 [2023-08-29 18:26:04,715 INFO L134 LiptonReduction]: Checked pairs total: 155540 [2023-08-29 18:26:04,715 INFO L136 LiptonReduction]: Total number of compositions: 190 [2023-08-29 18:26:04,728 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:26:04,733 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;@3c8f09e2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:26:04,733 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-29 18:26:04,738 INFO L130 PetriNetUnfolder]: 11/48 cut-off events. [2023-08-29 18:26:04,738 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:26:04,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:26:04,739 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-29 18:26:04,739 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 18:26:04,743 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:26:04,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1512306095, now seen corresponding path program 1 times [2023-08-29 18:26:04,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:26:04,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142016610] [2023-08-29 18:26:04,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:26:04,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:26:04,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:26:05,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:26:05,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:26:05,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142016610] [2023-08-29 18:26:05,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142016610] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:26:05,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:26:05,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:26:05,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724282442] [2023-08-29 18:26:05,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:26:05,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:26:05,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:26:05,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:26:05,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:26:05,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 538 [2023-08-29 18:26:05,079 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 193 transitions, 394 flow. Second operand has 3 states, 3 states have (on average 302.6666666666667) internal successors, (908), 3 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:05,079 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:26:05,079 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 538 [2023-08-29 18:26:05,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:26:05,470 INFO L130 PetriNetUnfolder]: 822/2955 cut-off events. [2023-08-29 18:26:05,471 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 18:26:05,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4489 conditions, 2955 events. 822/2955 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 24027 event pairs, 684 based on Foata normal form. 363/3029 useless extension candidates. Maximal degree in co-relation 4325. Up to 1527 conditions per place. [2023-08-29 18:26:05,485 INFO L137 encePairwiseOnDemand]: 503/538 looper letters, 63 selfloop transitions, 2 changer transitions 0/162 dead transitions. [2023-08-29 18:26:05,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 162 transitions, 462 flow [2023-08-29 18:26:05,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:26:05,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:26:05,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1001 transitions. [2023-08-29 18:26:05,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6201982651796778 [2023-08-29 18:26:05,499 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1001 transitions. [2023-08-29 18:26:05,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1001 transitions. [2023-08-29 18:26:05,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:26:05,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1001 transitions. [2023-08-29 18:26:05,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 333.6666666666667) internal successors, (1001), 3 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:05,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 538.0) internal successors, (2152), 4 states have internal predecessors, (2152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:05,515 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 538.0) internal successors, (2152), 4 states have internal predecessors, (2152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:05,516 INFO L175 Difference]: Start difference. First operand has 157 places, 193 transitions, 394 flow. Second operand 3 states and 1001 transitions. [2023-08-29 18:26:05,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 162 transitions, 462 flow [2023-08-29 18:26:05,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 162 transitions, 462 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:26:05,523 INFO L231 Difference]: Finished difference. Result has 160 places, 162 transitions, 342 flow [2023-08-29 18:26:05,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=538, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=342, PETRI_PLACES=160, PETRI_TRANSITIONS=162} [2023-08-29 18:26:05,527 INFO L281 CegarLoopForPetriNet]: 157 programPoint places, 3 predicate places. [2023-08-29 18:26:05,528 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 162 transitions, 342 flow [2023-08-29 18:26:05,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 302.6666666666667) internal successors, (908), 3 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:05,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:26:05,529 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-29 18:26:05,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 18:26:05,529 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 18:26:05,530 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:26:05,530 INFO L85 PathProgramCache]: Analyzing trace with hash 334368261, now seen corresponding path program 1 times [2023-08-29 18:26:05,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:26:05,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059029774] [2023-08-29 18:26:05,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:26:05,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:26:05,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:26:05,610 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:26:05,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:26:05,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059029774] [2023-08-29 18:26:05,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059029774] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:26:05,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085911445] [2023-08-29 18:26:05,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:26:05,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:26:05,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:26:05,619 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 18:26:05,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-29 18:26:05,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:26:05,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 18:26:05,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:26:05,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:26:05,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:26:05,781 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:26:05,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085911445] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:26:05,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 18:26:05,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 18:26:05,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350394361] [2023-08-29 18:26:05,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 18:26:05,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 18:26:05,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:26:05,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 18:26:05,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 18:26:05,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 538 [2023-08-29 18:26:05,807 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 162 transitions, 342 flow. Second operand has 7 states, 7 states have (on average 301.57142857142856) internal successors, (2111), 7 states have internal predecessors, (2111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:05,808 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:26:05,808 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 538 [2023-08-29 18:26:05,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:26:06,266 INFO L130 PetriNetUnfolder]: 822/2958 cut-off events. [2023-08-29 18:26:06,266 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 18:26:06,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4505 conditions, 2958 events. 822/2958 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 24063 event pairs, 684 based on Foata normal form. 0/2669 useless extension candidates. Maximal degree in co-relation 4493. Up to 1527 conditions per place. [2023-08-29 18:26:06,279 INFO L137 encePairwiseOnDemand]: 535/538 looper letters, 63 selfloop transitions, 5 changer transitions 0/165 dead transitions. [2023-08-29 18:26:06,280 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 165 transitions, 490 flow [2023-08-29 18:26:06,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 18:26:06,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 18:26:06,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1871 transitions. [2023-08-29 18:26:06,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5796158612143743 [2023-08-29 18:26:06,284 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1871 transitions. [2023-08-29 18:26:06,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1871 transitions. [2023-08-29 18:26:06,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:26:06,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1871 transitions. [2023-08-29 18:26:06,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 311.8333333333333) internal successors, (1871), 6 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:06,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 538.0) internal successors, (3766), 7 states have internal predecessors, (3766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:06,295 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 538.0) internal successors, (3766), 7 states have internal predecessors, (3766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:06,295 INFO L175 Difference]: Start difference. First operand has 160 places, 162 transitions, 342 flow. Second operand 6 states and 1871 transitions. [2023-08-29 18:26:06,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 165 transitions, 490 flow [2023-08-29 18:26:06,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 165 transitions, 486 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-29 18:26:06,300 INFO L231 Difference]: Finished difference. Result has 167 places, 165 transitions, 374 flow [2023-08-29 18:26:06,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=538, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=374, PETRI_PLACES=167, PETRI_TRANSITIONS=165} [2023-08-29 18:26:06,301 INFO L281 CegarLoopForPetriNet]: 157 programPoint places, 10 predicate places. [2023-08-29 18:26:06,301 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 165 transitions, 374 flow [2023-08-29 18:26:06,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 301.57142857142856) internal successors, (2111), 7 states have internal predecessors, (2111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:06,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:26:06,303 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-08-29 18:26:06,311 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 18:26:06,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:26:06,509 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 18:26:06,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:26:06,509 INFO L85 PathProgramCache]: Analyzing trace with hash -2012062929, now seen corresponding path program 2 times [2023-08-29 18:26:06,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:26:06,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218723129] [2023-08-29 18:26:06,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:26:06,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:26:06,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:26:06,662 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:26:06,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:26:06,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218723129] [2023-08-29 18:26:06,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218723129] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:26:06,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290102588] [2023-08-29 18:26:06,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 18:26:06,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:26:06,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:26:06,669 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 18:26:06,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-29 18:26:06,748 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 18:26:06,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 18:26:06,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 18:26:06,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:26:06,766 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:26:06,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:26:06,810 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:26:06,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290102588] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:26:06,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 18:26:06,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-29 18:26:06,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329429290] [2023-08-29 18:26:06,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 18:26:06,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-29 18:26:06,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:26:06,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-29 18:26:06,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-29 18:26:06,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 538 [2023-08-29 18:26:06,847 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 165 transitions, 374 flow. Second operand has 13 states, 13 states have (on average 301.3076923076923) internal successors, (3917), 13 states have internal predecessors, (3917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:06,847 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:26:06,847 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 538 [2023-08-29 18:26:06,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:26:07,276 INFO L130 PetriNetUnfolder]: 822/2964 cut-off events. [2023-08-29 18:26:07,277 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-08-29 18:26:07,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4542 conditions, 2964 events. 822/2964 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 23989 event pairs, 684 based on Foata normal form. 6/2682 useless extension candidates. Maximal degree in co-relation 4484. Up to 1527 conditions per place. [2023-08-29 18:26:07,290 INFO L137 encePairwiseOnDemand]: 535/538 looper letters, 63 selfloop transitions, 11 changer transitions 0/171 dead transitions. [2023-08-29 18:26:07,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 171 transitions, 558 flow [2023-08-29 18:26:07,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 18:26:07,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 18:26:07,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3680 transitions. [2023-08-29 18:26:07,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5700123915737298 [2023-08-29 18:26:07,299 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3680 transitions. [2023-08-29 18:26:07,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3680 transitions. [2023-08-29 18:26:07,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:26:07,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3680 transitions. [2023-08-29 18:26:07,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 306.6666666666667) internal successors, (3680), 12 states have internal predecessors, (3680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:07,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 538.0) internal successors, (6994), 13 states have internal predecessors, (6994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:07,322 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 538.0) internal successors, (6994), 13 states have internal predecessors, (6994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:07,322 INFO L175 Difference]: Start difference. First operand has 167 places, 165 transitions, 374 flow. Second operand 12 states and 3680 transitions. [2023-08-29 18:26:07,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 171 transitions, 558 flow [2023-08-29 18:26:07,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 171 transitions, 544 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-29 18:26:07,327 INFO L231 Difference]: Finished difference. Result has 183 places, 171 transitions, 444 flow [2023-08-29 18:26:07,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=538, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=444, PETRI_PLACES=183, PETRI_TRANSITIONS=171} [2023-08-29 18:26:07,328 INFO L281 CegarLoopForPetriNet]: 157 programPoint places, 26 predicate places. [2023-08-29 18:26:07,328 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 171 transitions, 444 flow [2023-08-29 18:26:07,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 301.3076923076923) internal successors, (3917), 13 states have internal predecessors, (3917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:07,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:26:07,330 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-08-29 18:26:07,340 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 18:26:07,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-29 18:26:07,537 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 18:26:07,538 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:26:07,538 INFO L85 PathProgramCache]: Analyzing trace with hash -885109905, now seen corresponding path program 3 times [2023-08-29 18:26:07,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:26:07,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576337440] [2023-08-29 18:26:07,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:26:07,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:26:07,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:26:07,596 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 18:26:07,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:26:07,648 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 18:26:07,648 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 18:26:07,649 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-08-29 18:26:07,650 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-08-29 18:26:07,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-08-29 18:26:07,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-08-29 18:26:07,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-08-29 18:26:07,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-08-29 18:26:07,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-08-29 18:26:07,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-08-29 18:26:07,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-08-29 18:26:07,655 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-08-29 18:26:07,656 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-08-29 18:26:07,656 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-08-29 18:26:07,656 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-08-29 18:26:07,656 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-08-29 18:26:07,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-08-29 18:26:07,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-08-29 18:26:07,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-08-29 18:26:07,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-08-29 18:26:07,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-08-29 18:26:07,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-08-29 18:26:07,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-08-29 18:26:07,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-08-29 18:26:07,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 18:26:07,658 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2023-08-29 18:26:07,661 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 18:26:07,661 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-29 18:26:07,716 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-29 18:26:07,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 397 places, 452 transitions, 922 flow [2023-08-29 18:26:07,865 INFO L130 PetriNetUnfolder]: 118/890 cut-off events. [2023-08-29 18:26:07,865 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 18:26:07,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 904 conditions, 890 events. 118/890 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 5569 event pairs, 0 based on Foata normal form. 0/724 useless extension candidates. Maximal degree in co-relation 554. Up to 12 conditions per place. [2023-08-29 18:26:07,877 INFO L82 GeneralOperation]: Start removeDead. Operand has 397 places, 452 transitions, 922 flow [2023-08-29 18:26:07,886 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 397 places, 452 transitions, 922 flow [2023-08-29 18:26:07,886 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:26:07,887 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 397 places, 452 transitions, 922 flow [2023-08-29 18:26:07,887 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 397 places, 452 transitions, 922 flow [2023-08-29 18:26:07,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 397 places, 452 transitions, 922 flow [2023-08-29 18:26:07,994 INFO L130 PetriNetUnfolder]: 118/890 cut-off events. [2023-08-29 18:26:07,994 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 18:26:08,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 904 conditions, 890 events. 118/890 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 5569 event pairs, 0 based on Foata normal form. 0/724 useless extension candidates. Maximal degree in co-relation 554. Up to 12 conditions per place. [2023-08-29 18:26:08,038 INFO L119 LiptonReduction]: Number of co-enabled transitions 108732 [2023-08-29 18:26:11,454 INFO L134 LiptonReduction]: Checked pairs total: 449366 [2023-08-29 18:26:11,454 INFO L136 LiptonReduction]: Total number of compositions: 248 [2023-08-29 18:26:11,457 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:26:11,462 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;@3c8f09e2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:26:11,462 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2023-08-29 18:26:11,469 INFO L130 PetriNetUnfolder]: 26/116 cut-off events. [2023-08-29 18:26:11,469 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:26:11,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:26:11,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:26:11,469 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 18:26:11,470 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:26:11,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1674770993, now seen corresponding path program 1 times [2023-08-29 18:26:11,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:26:11,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144367413] [2023-08-29 18:26:11,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:26:11,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:26:11,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:26:11,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:26:11,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:26:11,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144367413] [2023-08-29 18:26:11,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144367413] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:26:11,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:26:11,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:26:11,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802472396] [2023-08-29 18:26:11,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:26:11,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:26:11,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:26:11,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:26:11,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:26:11,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 390 out of 700 [2023-08-29 18:26:11,529 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 256 transitions, 530 flow. Second operand has 3 states, 3 states have (on average 392.0) internal successors, (1176), 3 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:11,529 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:26:11,529 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 390 of 700 [2023-08-29 18:26:11,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:26:16,955 INFO L130 PetriNetUnfolder]: 31210/71188 cut-off events. [2023-08-29 18:26:16,956 INFO L131 PetriNetUnfolder]: For 185/185 co-relation queries the response was YES. [2023-08-29 18:26:17,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115304 conditions, 71188 events. 31210/71188 cut-off events. For 185/185 co-relation queries the response was YES. Maximal size of possible extension queue 1696. Compared 821390 event pairs, 27108 based on Foata normal form. 8997/72717 useless extension candidates. Maximal degree in co-relation 51424. Up to 43993 conditions per place. [2023-08-29 18:26:17,400 INFO L137 encePairwiseOnDemand]: 655/700 looper letters, 84 selfloop transitions, 2 changer transitions 0/215 dead transitions. [2023-08-29 18:26:17,400 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 215 transitions, 620 flow [2023-08-29 18:26:17,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:26:17,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:26:17,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1299 transitions. [2023-08-29 18:26:17,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6185714285714285 [2023-08-29 18:26:17,406 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1299 transitions. [2023-08-29 18:26:17,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1299 transitions. [2023-08-29 18:26:17,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:26:17,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1299 transitions. [2023-08-29 18:26:17,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 433.0) internal successors, (1299), 3 states have internal predecessors, (1299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:17,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:17,415 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 700.0) internal successors, (2800), 4 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:17,415 INFO L175 Difference]: Start difference. First operand has 209 places, 256 transitions, 530 flow. Second operand 3 states and 1299 transitions. [2023-08-29 18:26:17,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 215 transitions, 620 flow [2023-08-29 18:26:17,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 215 transitions, 620 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:26:17,422 INFO L231 Difference]: Finished difference. Result has 212 places, 215 transitions, 458 flow [2023-08-29 18:26:17,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=700, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=458, PETRI_PLACES=212, PETRI_TRANSITIONS=215} [2023-08-29 18:26:17,424 INFO L281 CegarLoopForPetriNet]: 209 programPoint places, 3 predicate places. [2023-08-29 18:26:17,425 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 215 transitions, 458 flow [2023-08-29 18:26:17,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 392.0) internal successors, (1176), 3 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:17,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:26:17,426 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-29 18:26:17,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 18:26:17,427 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 18:26:17,427 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:26:17,427 INFO L85 PathProgramCache]: Analyzing trace with hash 967596660, now seen corresponding path program 1 times [2023-08-29 18:26:17,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:26:17,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877639683] [2023-08-29 18:26:17,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:26:17,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:26:17,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:26:17,479 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-29 18:26:17,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:26:17,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877639683] [2023-08-29 18:26:17,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877639683] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:26:17,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624278425] [2023-08-29 18:26:17,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:26:17,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:26:17,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:26:17,482 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 18:26:17,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-29 18:26:17,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:26:17,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 18:26:17,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:26:17,579 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-29 18:26:17,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:26:17,601 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-29 18:26:17,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624278425] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:26:17,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 18:26:17,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 18:26:17,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608651372] [2023-08-29 18:26:17,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 18:26:17,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 18:26:17,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:26:17,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 18:26:17,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 18:26:17,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 700 [2023-08-29 18:26:17,624 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 215 transitions, 458 flow. Second operand has 7 states, 7 states have (on average 390.7142857142857) internal successors, (2735), 7 states have internal predecessors, (2735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:17,624 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:26:17,624 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 700 [2023-08-29 18:26:17,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:26:22,813 INFO L130 PetriNetUnfolder]: 31210/71191 cut-off events. [2023-08-29 18:26:22,813 INFO L131 PetriNetUnfolder]: For 185/185 co-relation queries the response was YES. [2023-08-29 18:26:22,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115320 conditions, 71191 events. 31210/71191 cut-off events. For 185/185 co-relation queries the response was YES. Maximal size of possible extension queue 1696. Compared 821751 event pairs, 27108 based on Foata normal form. 0/63723 useless extension candidates. Maximal degree in co-relation 115307. Up to 43993 conditions per place. [2023-08-29 18:26:23,183 INFO L137 encePairwiseOnDemand]: 697/700 looper letters, 84 selfloop transitions, 5 changer transitions 0/218 dead transitions. [2023-08-29 18:26:23,184 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 218 transitions, 648 flow [2023-08-29 18:26:23,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 18:26:23,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 18:26:23,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2426 transitions. [2023-08-29 18:26:23,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5776190476190476 [2023-08-29 18:26:23,193 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2426 transitions. [2023-08-29 18:26:23,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2426 transitions. [2023-08-29 18:26:23,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:26:23,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2426 transitions. [2023-08-29 18:26:23,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 404.3333333333333) internal successors, (2426), 6 states have internal predecessors, (2426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:23,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 700.0) internal successors, (4900), 7 states have internal predecessors, (4900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:23,215 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 700.0) internal successors, (4900), 7 states have internal predecessors, (4900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:23,215 INFO L175 Difference]: Start difference. First operand has 212 places, 215 transitions, 458 flow. Second operand 6 states and 2426 transitions. [2023-08-29 18:26:23,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 218 transitions, 648 flow [2023-08-29 18:26:23,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 218 transitions, 644 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-29 18:26:23,221 INFO L231 Difference]: Finished difference. Result has 219 places, 218 transitions, 490 flow [2023-08-29 18:26:23,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=700, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=490, PETRI_PLACES=219, PETRI_TRANSITIONS=218} [2023-08-29 18:26:23,224 INFO L281 CegarLoopForPetriNet]: 209 programPoint places, 10 predicate places. [2023-08-29 18:26:23,224 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 218 transitions, 490 flow [2023-08-29 18:26:23,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 390.7142857142857) internal successors, (2735), 7 states have internal predecessors, (2735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:23,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:26:23,226 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1] [2023-08-29 18:26:23,231 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-29 18:26:23,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:26:23,431 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 18:26:23,432 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:26:23,432 INFO L85 PathProgramCache]: Analyzing trace with hash -457342769, now seen corresponding path program 2 times [2023-08-29 18:26:23,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:26:23,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621238755] [2023-08-29 18:26:23,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:26:23,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:26:23,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:26:23,528 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-29 18:26:23,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:26:23,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621238755] [2023-08-29 18:26:23,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621238755] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:26:23,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375190464] [2023-08-29 18:26:23,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 18:26:23,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:26:23,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:26:23,531 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 18:26:23,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-29 18:26:23,606 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 18:26:23,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 18:26:23,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 18:26:23,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:26:23,629 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-29 18:26:23,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:26:23,676 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-29 18:26:23,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375190464] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:26:23,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 18:26:23,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-29 18:26:23,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077508710] [2023-08-29 18:26:23,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 18:26:23,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-29 18:26:23,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:26:23,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-29 18:26:23,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-29 18:26:23,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 700 [2023-08-29 18:26:23,731 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 218 transitions, 490 flow. Second operand has 13 states, 13 states have (on average 390.38461538461536) internal successors, (5075), 13 states have internal predecessors, (5075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:23,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:26:23,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 700 [2023-08-29 18:26:23,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:26:29,012 INFO L130 PetriNetUnfolder]: 31210/71197 cut-off events. [2023-08-29 18:26:29,012 INFO L131 PetriNetUnfolder]: For 205/205 co-relation queries the response was YES. [2023-08-29 18:26:29,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115357 conditions, 71197 events. 31210/71197 cut-off events. For 205/205 co-relation queries the response was YES. Maximal size of possible extension queue 1696. Compared 821330 event pairs, 27108 based on Foata normal form. 6/63736 useless extension candidates. Maximal degree in co-relation 115298. Up to 43993 conditions per place. [2023-08-29 18:26:29,356 INFO L137 encePairwiseOnDemand]: 697/700 looper letters, 84 selfloop transitions, 11 changer transitions 0/224 dead transitions. [2023-08-29 18:26:29,356 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 224 transitions, 716 flow [2023-08-29 18:26:29,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 18:26:29,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 18:26:29,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4769 transitions. [2023-08-29 18:26:29,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5677380952380953 [2023-08-29 18:26:29,367 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4769 transitions. [2023-08-29 18:26:29,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4769 transitions. [2023-08-29 18:26:29,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:26:29,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4769 transitions. [2023-08-29 18:26:29,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 397.4166666666667) internal successors, (4769), 12 states have internal predecessors, (4769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:29,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 700.0) internal successors, (9100), 13 states have internal predecessors, (9100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:29,389 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 700.0) internal successors, (9100), 13 states have internal predecessors, (9100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:29,389 INFO L175 Difference]: Start difference. First operand has 219 places, 218 transitions, 490 flow. Second operand 12 states and 4769 transitions. [2023-08-29 18:26:29,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 224 transitions, 716 flow [2023-08-29 18:26:29,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 224 transitions, 702 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-29 18:26:29,394 INFO L231 Difference]: Finished difference. Result has 235 places, 224 transitions, 560 flow [2023-08-29 18:26:29,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=700, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=560, PETRI_PLACES=235, PETRI_TRANSITIONS=224} [2023-08-29 18:26:29,395 INFO L281 CegarLoopForPetriNet]: 209 programPoint places, 26 predicate places. [2023-08-29 18:26:29,395 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 224 transitions, 560 flow [2023-08-29 18:26:29,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 390.38461538461536) internal successors, (5075), 13 states have internal predecessors, (5075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:29,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:26:29,397 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2023-08-29 18:26:29,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-29 18:26:29,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:26:29,602 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 18:26:29,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:26:29,603 INFO L85 PathProgramCache]: Analyzing trace with hash 2054139567, now seen corresponding path program 3 times [2023-08-29 18:26:29,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:26:29,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395958570] [2023-08-29 18:26:29,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:26:29,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:26:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:26:29,622 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 18:26:29,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:26:29,647 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 18:26:29,647 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 18:26:29,647 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (26 of 27 remaining) [2023-08-29 18:26:29,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (25 of 27 remaining) [2023-08-29 18:26:29,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (24 of 27 remaining) [2023-08-29 18:26:29,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (23 of 27 remaining) [2023-08-29 18:26:29,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (22 of 27 remaining) [2023-08-29 18:26:29,650 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (21 of 27 remaining) [2023-08-29 18:26:29,650 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (20 of 27 remaining) [2023-08-29 18:26:29,650 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 27 remaining) [2023-08-29 18:26:29,650 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (18 of 27 remaining) [2023-08-29 18:26:29,650 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (17 of 27 remaining) [2023-08-29 18:26:29,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 27 remaining) [2023-08-29 18:26:29,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 27 remaining) [2023-08-29 18:26:29,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 27 remaining) [2023-08-29 18:26:29,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 27 remaining) [2023-08-29 18:26:29,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 27 remaining) [2023-08-29 18:26:29,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 27 remaining) [2023-08-29 18:26:29,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 27 remaining) [2023-08-29 18:26:29,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 27 remaining) [2023-08-29 18:26:29,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 27 remaining) [2023-08-29 18:26:29,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 27 remaining) [2023-08-29 18:26:29,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 27 remaining) [2023-08-29 18:26:29,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 27 remaining) [2023-08-29 18:26:29,653 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 27 remaining) [2023-08-29 18:26:29,653 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 27 remaining) [2023-08-29 18:26:29,653 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 27 remaining) [2023-08-29 18:26:29,653 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 27 remaining) [2023-08-29 18:26:29,653 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 27 remaining) [2023-08-29 18:26:29,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 18:26:29,654 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2023-08-29 18:26:29,654 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 18:26:29,654 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-29 18:26:29,707 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-29 18:26:29,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 488 places, 556 transitions, 1142 flow [2023-08-29 18:26:29,856 INFO L130 PetriNetUnfolder]: 168/1271 cut-off events. [2023-08-29 18:26:29,856 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-29 18:26:29,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1299 conditions, 1271 events. 168/1271 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 8444 event pairs, 1 based on Foata normal form. 0/1036 useless extension candidates. Maximal degree in co-relation 898. Up to 16 conditions per place. [2023-08-29 18:26:29,873 INFO L82 GeneralOperation]: Start removeDead. Operand has 488 places, 556 transitions, 1142 flow [2023-08-29 18:26:29,887 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 488 places, 556 transitions, 1142 flow [2023-08-29 18:26:29,887 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:26:29,887 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 488 places, 556 transitions, 1142 flow [2023-08-29 18:26:29,888 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 488 places, 556 transitions, 1142 flow [2023-08-29 18:26:29,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 488 places, 556 transitions, 1142 flow [2023-08-29 18:26:30,065 INFO L130 PetriNetUnfolder]: 168/1271 cut-off events. [2023-08-29 18:26:30,065 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-29 18:26:30,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1299 conditions, 1271 events. 168/1271 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 8444 event pairs, 1 based on Foata normal form. 0/1036 useless extension candidates. Maximal degree in co-relation 898. Up to 16 conditions per place. [2023-08-29 18:26:30,160 INFO L119 LiptonReduction]: Number of co-enabled transitions 195228 [2023-08-29 18:26:33,796 INFO L134 LiptonReduction]: Checked pairs total: 807335 [2023-08-29 18:26:33,796 INFO L136 LiptonReduction]: Total number of compositions: 299 [2023-08-29 18:26:33,798 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:26:33,798 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;@3c8f09e2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:26:33,798 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2023-08-29 18:26:33,803 INFO L130 PetriNetUnfolder]: 26/116 cut-off events. [2023-08-29 18:26:33,803 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:26:33,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:26:33,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:26:33,804 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-08-29 18:26:33,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:26:33,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1409242106, now seen corresponding path program 1 times [2023-08-29 18:26:33,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:26:33,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32791794] [2023-08-29 18:26:33,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:26:33,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:26:33,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:26:33,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:26:33,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:26:33,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32791794] [2023-08-29 18:26:33,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32791794] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:26:33,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:26:33,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:26:33,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489515399] [2023-08-29 18:26:33,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:26:33,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:26:33,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:26:33,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:26:33,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:26:33,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 479 out of 855 [2023-08-29 18:26:33,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 316 transitions, 662 flow. Second operand has 3 states, 3 states have (on average 481.0) internal successors, (1443), 3 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:33,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:26:33,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 479 of 855 [2023-08-29 18:26:33,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand