./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/06-symbeq_04-funloop_hard1.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --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/06-symbeq_04-funloop_hard1.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 4d853145e48ada6aa212af657ef21b1dd6bc82cb156511f71c23f87b45f2510e --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 19:59:10,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 19:59:10,512 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 19:59:10,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 19:59:10,557 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 19:59:10,570 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 19:59:10,572 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 19:59:10,574 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 19:59:10,576 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 19:59:10,585 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 19:59:10,586 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 19:59:10,588 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 19:59:10,589 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 19:59:10,591 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 19:59:10,592 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 19:59:10,595 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 19:59:10,597 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 19:59:10,598 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 19:59:10,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 19:59:10,600 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 19:59:10,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 19:59:10,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 19:59:10,605 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 19:59:10,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 19:59:10,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 19:59:10,614 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 19:59:10,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 19:59:10,615 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 19:59:10,616 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 19:59:10,617 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 19:59:10,618 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 19:59:10,621 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 19:59:10,621 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 19:59:10,622 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 19:59:10,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 19:59:10,624 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 19:59:10,624 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 19:59:10,625 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 19:59:10,625 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 19:59:10,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 19:59:10,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 19:59:10,627 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-31 19:59:10,658 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 19:59:10,658 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 19:59:10,659 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 19:59:10,660 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 19:59:10,660 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 19:59:10,661 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 19:59:10,661 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 19:59:10,661 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 19:59:10,662 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 19:59:10,662 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 19:59:10,662 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 19:59:10,663 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 19:59:10,663 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 19:59:10,663 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 19:59:10,663 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 19:59:10,663 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 19:59:10,663 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 19:59:10,664 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 19:59:10,664 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-31 19:59:10,664 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 19:59:10,664 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 19:59:10,664 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 19:59:10,664 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 19:59:10,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 19:59:10,665 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 19:59:10,665 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 19:59:10,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 19:59:10,665 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 19:59:10,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 19:59:10,666 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 19:59:10,666 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 19:59:10,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 19:59:10,666 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 19:59:10,667 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 19:59:10,667 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 19:59:10,667 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 19:59:10,667 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 19:59:10,667 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d853145e48ada6aa212af657ef21b1dd6bc82cb156511f71c23f87b45f2510e Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 19:59:10,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 19:59:10,970 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 19:59:10,972 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 19:59:10,973 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 19:59:10,974 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 19:59:10,975 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/06-symbeq_04-funloop_hard1.i [2023-08-31 19:59:12,101 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 19:59:12,405 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 19:59:12,409 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/06-symbeq_04-funloop_hard1.i [2023-08-31 19:59:12,427 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/094bb388e/fdfed787138e49889d199745b1d98374/FLAG27e847f3e [2023-08-31 19:59:12,448 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/094bb388e/fdfed787138e49889d199745b1d98374 [2023-08-31 19:59:12,452 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 19:59:12,453 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 19:59:12,455 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 19:59:12,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 19:59:12,457 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 19:59:12,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 07:59:12" (1/1) ... [2023-08-31 19:59:12,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52a5f63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 07:59:12, skipping insertion in model container [2023-08-31 19:59:12,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 07:59:12" (1/1) ... [2023-08-31 19:59:12,464 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 19:59:12,514 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 19:59:12,884 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 19:59:12,899 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 19:59:12,974 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 19:59:13,021 INFO L208 MainTranslator]: Completed translation [2023-08-31 19:59:13,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 07:59:13 WrapperNode [2023-08-31 19:59:13,022 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 19:59:13,023 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 19:59:13,023 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 19:59:13,023 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 19:59:13,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 07:59:13" (1/1) ... [2023-08-31 19:59:13,046 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 07:59:13" (1/1) ... [2023-08-31 19:59:13,069 INFO L138 Inliner]: procedures = 262, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 115 [2023-08-31 19:59:13,070 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 19:59:13,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 19:59:13,071 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 19:59:13,071 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 19:59:13,078 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 07:59:13" (1/1) ... [2023-08-31 19:59:13,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 07:59:13" (1/1) ... [2023-08-31 19:59:13,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 07:59:13" (1/1) ... [2023-08-31 19:59:13,082 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 07:59:13" (1/1) ... [2023-08-31 19:59:13,100 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 07:59:13" (1/1) ... [2023-08-31 19:59:13,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 07:59:13" (1/1) ... [2023-08-31 19:59:13,112 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 07:59:13" (1/1) ... [2023-08-31 19:59:13,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 07:59:13" (1/1) ... [2023-08-31 19:59:13,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 19:59:13,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 19:59:13,123 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 19:59:13,123 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 19:59:13,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 07:59:13" (1/1) ... [2023-08-31 19:59:13,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 19:59:13,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 19:59:13,150 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) [2023-08-31 19:59:13,152 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 [2023-08-31 19:59:13,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 19:59:13,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 19:59:13,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 19:59:13,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 19:59:13,172 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-31 19:59:13,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 19:59:13,173 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-31 19:59:13,173 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-31 19:59:13,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 19:59:13,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 19:59:13,174 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 19:59:13,332 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 19:59:13,334 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 19:59:13,596 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 19:59:13,602 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 19:59:13,602 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-31 19:59:13,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 07:59:13 BoogieIcfgContainer [2023-08-31 19:59:13,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 19:59:13,606 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 19:59:13,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 19:59:13,608 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 19:59:13,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 07:59:12" (1/3) ... [2023-08-31 19:59:13,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@233fae6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 07:59:13, skipping insertion in model container [2023-08-31 19:59:13,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 07:59:13" (2/3) ... [2023-08-31 19:59:13,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@233fae6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 07:59:13, skipping insertion in model container [2023-08-31 19:59:13,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 07:59:13" (3/3) ... [2023-08-31 19:59:13,612 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_04-funloop_hard1.i [2023-08-31 19:59:13,618 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 19:59:13,625 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 19:59:13,625 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-31 19:59:13,625 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 19:59:13,716 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 19:59:13,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 122 transitions, 249 flow [2023-08-31 19:59:13,798 INFO L130 PetriNetUnfolder]: 6/121 cut-off events. [2023-08-31 19:59:13,798 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 19:59:13,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 121 events. 6/121 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 223 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 99. Up to 2 conditions per place. [2023-08-31 19:59:13,803 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 122 transitions, 249 flow [2023-08-31 19:59:13,806 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 121 transitions, 245 flow [2023-08-31 19:59:13,809 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 19:59:13,816 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 119 places, 121 transitions, 245 flow [2023-08-31 19:59:13,818 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 119 places, 121 transitions, 245 flow [2023-08-31 19:59:13,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 121 transitions, 245 flow [2023-08-31 19:59:13,841 INFO L130 PetriNetUnfolder]: 6/121 cut-off events. [2023-08-31 19:59:13,844 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 19:59:13,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 121 events. 6/121 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 223 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 99. Up to 2 conditions per place. [2023-08-31 19:59:13,847 INFO L119 LiptonReduction]: Number of co-enabled transitions 4588 [2023-08-31 19:59:15,251 INFO L134 LiptonReduction]: Checked pairs total: 14013 [2023-08-31 19:59:15,251 INFO L136 LiptonReduction]: Total number of compositions: 69 [2023-08-31 19:59:15,263 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 19:59:15,268 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;@2922886c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 19:59:15,268 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-08-31 19:59:15,274 INFO L130 PetriNetUnfolder]: 1/25 cut-off events. [2023-08-31 19:59:15,274 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 19:59:15,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 19:59:15,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 19:59:15,275 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-31 19:59:15,278 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 19:59:15,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1699604442, now seen corresponding path program 1 times [2023-08-31 19:59:15,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 19:59:15,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702916001] [2023-08-31 19:59:15,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 19:59:15,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 19:59:15,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 19:59:15,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 19:59:15,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 19:59:15,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702916001] [2023-08-31 19:59:15,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702916001] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 19:59:15,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 19:59:15,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 19:59:15,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587697266] [2023-08-31 19:59:15,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 19:59:15,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 19:59:15,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 19:59:15,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 19:59:15,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 19:59:15,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 191 [2023-08-31 19:59:15,553 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:15,553 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 19:59:15,553 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 191 [2023-08-31 19:59:15,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 19:59:15,687 INFO L130 PetriNetUnfolder]: 106/409 cut-off events. [2023-08-31 19:59:15,687 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 19:59:15,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627 conditions, 409 events. 106/409 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2223 event pairs, 84 based on Foata normal form. 0/376 useless extension candidates. Maximal degree in co-relation 612. Up to 213 conditions per place. [2023-08-31 19:59:15,691 INFO L137 encePairwiseOnDemand]: 188/191 looper letters, 24 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2023-08-31 19:59:15,691 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 56 transitions, 167 flow [2023-08-31 19:59:15,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 19:59:15,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 19:59:15,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 369 transitions. [2023-08-31 19:59:15,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.643979057591623 [2023-08-31 19:59:15,702 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 369 transitions. [2023-08-31 19:59:15,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 369 transitions. [2023-08-31 19:59:15,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 19:59:15,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 369 transitions. [2023-08-31 19:59:15,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:15,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:15,719 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:15,721 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 113 flow. Second operand 3 states and 369 transitions. [2023-08-31 19:59:15,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 56 transitions, 167 flow [2023-08-31 19:59:15,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 56 transitions, 166 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 19:59:15,725 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 124 flow [2023-08-31 19:59:15,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2023-08-31 19:59:15,729 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2023-08-31 19:59:15,729 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 124 flow [2023-08-31 19:59:15,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:15,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 19:59:15,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 19:59:15,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 19:59:15,730 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-31 19:59:15,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 19:59:15,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1558654883, now seen corresponding path program 1 times [2023-08-31 19:59:15,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 19:59:15,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860085169] [2023-08-31 19:59:15,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 19:59:15,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 19:59:15,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 19:59:15,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 19:59:15,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 19:59:15,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860085169] [2023-08-31 19:59:15,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860085169] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 19:59:15,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283285179] [2023-08-31 19:59:15,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 19:59:15,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 19:59:15,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 19:59:15,807 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) [2023-08-31 19:59:15,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-31 19:59:15,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 19:59:15,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-31 19:59:15,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 19:59:15,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 19:59:15,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 19:59:15,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 19:59:15,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283285179] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 19:59:15,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 19:59:15,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-31 19:59:15,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305408625] [2023-08-31 19:59:15,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 19:59:15,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 19:59:15,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 19:59:15,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 19:59:15,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-31 19:59:15,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 191 [2023-08-31 19:59:15,998 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 124 flow. Second operand has 7 states, 7 states have (on average 114.71428571428571) internal successors, (803), 7 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:15,998 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 19:59:15,998 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 191 [2023-08-31 19:59:15,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 19:59:16,123 INFO L130 PetriNetUnfolder]: 106/412 cut-off events. [2023-08-31 19:59:16,123 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 19:59:16,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 642 conditions, 412 events. 106/412 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2237 event pairs, 84 based on Foata normal form. 0/379 useless extension candidates. Maximal degree in co-relation 631. Up to 213 conditions per place. [2023-08-31 19:59:16,126 INFO L137 encePairwiseOnDemand]: 188/191 looper letters, 24 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2023-08-31 19:59:16,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 59 transitions, 194 flow [2023-08-31 19:59:16,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 19:59:16,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 19:59:16,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 710 transitions. [2023-08-31 19:59:16,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6195462478184991 [2023-08-31 19:59:16,130 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 710 transitions. [2023-08-31 19:59:16,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 710 transitions. [2023-08-31 19:59:16,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 19:59:16,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 710 transitions. [2023-08-31 19:59:16,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 118.33333333333333) internal successors, (710), 6 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:16,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:16,137 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:16,137 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 124 flow. Second operand 6 states and 710 transitions. [2023-08-31 19:59:16,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 59 transitions, 194 flow [2023-08-31 19:59:16,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 59 transitions, 190 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-31 19:59:16,139 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 156 flow [2023-08-31 19:59:16,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=156, PETRI_PLACES=65, PETRI_TRANSITIONS=59} [2023-08-31 19:59:16,140 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 9 predicate places. [2023-08-31 19:59:16,140 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 156 flow [2023-08-31 19:59:16,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.71428571428571) internal successors, (803), 7 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:16,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 19:59:16,141 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 19:59:16,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-31 19:59:16,346 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 [2023-08-31 19:59:16,346 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-31 19:59:16,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 19:59:16,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1832123143, now seen corresponding path program 2 times [2023-08-31 19:59:16,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 19:59:16,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883968332] [2023-08-31 19:59:16,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 19:59:16,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 19:59:16,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 19:59:16,514 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 19:59:16,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 19:59:16,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883968332] [2023-08-31 19:59:16,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883968332] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 19:59:16,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961613007] [2023-08-31 19:59:16,516 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 19:59:16,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 19:59:16,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 19:59:16,521 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) [2023-08-31 19:59:16,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-31 19:59:16,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-31 19:59:16,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 19:59:16,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-31 19:59:16,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 19:59:16,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-31 19:59:16,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-31 19:59:16,751 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 19:59:16,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-08-31 19:59:16,787 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 19:59:16,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2023-08-31 19:59:16,809 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-31 19:59:16,810 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 19:59:16,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961613007] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 19:59:16,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 19:59:16,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 13 [2023-08-31 19:59:16,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109993619] [2023-08-31 19:59:16,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 19:59:16,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 19:59:16,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 19:59:16,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 19:59:16,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-08-31 19:59:17,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 191 [2023-08-31 19:59:17,145 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 59 transitions, 156 flow. Second operand has 9 states, 9 states have (on average 92.33333333333333) internal successors, (831), 9 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:17,145 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 19:59:17,145 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 191 [2023-08-31 19:59:17,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 19:59:17,636 INFO L130 PetriNetUnfolder]: 691/1606 cut-off events. [2023-08-31 19:59:17,636 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 19:59:17,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3019 conditions, 1606 events. 691/1606 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 8354 event pairs, 293 based on Foata normal form. 0/1496 useless extension candidates. Maximal degree in co-relation 2986. Up to 632 conditions per place. [2023-08-31 19:59:17,644 INFO L137 encePairwiseOnDemand]: 175/191 looper letters, 135 selfloop transitions, 27 changer transitions 0/175 dead transitions. [2023-08-31 19:59:17,644 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 175 transitions, 712 flow [2023-08-31 19:59:17,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 19:59:17,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 19:59:17,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1070 transitions. [2023-08-31 19:59:17,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5602094240837696 [2023-08-31 19:59:17,661 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1070 transitions. [2023-08-31 19:59:17,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1070 transitions. [2023-08-31 19:59:17,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 19:59:17,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1070 transitions. [2023-08-31 19:59:17,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 107.0) internal successors, (1070), 10 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:17,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 191.0) internal successors, (2101), 11 states have internal predecessors, (2101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:17,671 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 191.0) internal successors, (2101), 11 states have internal predecessors, (2101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:17,671 INFO L175 Difference]: Start difference. First operand has 65 places, 59 transitions, 156 flow. Second operand 10 states and 1070 transitions. [2023-08-31 19:59:17,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 175 transitions, 712 flow [2023-08-31 19:59:17,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 175 transitions, 698 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-31 19:59:17,677 INFO L231 Difference]: Finished difference. Result has 79 places, 84 transitions, 346 flow [2023-08-31 19:59:17,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=346, PETRI_PLACES=79, PETRI_TRANSITIONS=84} [2023-08-31 19:59:17,678 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 23 predicate places. [2023-08-31 19:59:17,678 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 84 transitions, 346 flow [2023-08-31 19:59:17,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 92.33333333333333) internal successors, (831), 9 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:17,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 19:59:17,682 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 19:59:17,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-31 19:59:17,887 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 [2023-08-31 19:59:17,887 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-31 19:59:17,888 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 19:59:17,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1600781437, now seen corresponding path program 1 times [2023-08-31 19:59:17,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 19:59:17,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573074258] [2023-08-31 19:59:17,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 19:59:17,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 19:59:17,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 19:59:18,004 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 19:59:18,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 19:59:18,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573074258] [2023-08-31 19:59:18,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573074258] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 19:59:18,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560151600] [2023-08-31 19:59:18,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 19:59:18,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 19:59:18,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 19:59:18,006 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) [2023-08-31 19:59:18,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-31 19:59:18,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 19:59:18,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-31 19:59:18,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 19:59:18,091 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 19:59:18,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 19:59:18,141 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 19:59:18,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560151600] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 19:59:18,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 19:59:18,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-31 19:59:18,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190934110] [2023-08-31 19:59:18,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 19:59:18,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-31 19:59:18,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 19:59:18,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-31 19:59:18,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-31 19:59:18,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 191 [2023-08-31 19:59:18,178 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 84 transitions, 346 flow. Second operand has 13 states, 13 states have (on average 114.38461538461539) internal successors, (1487), 13 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:18,178 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 19:59:18,178 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 191 [2023-08-31 19:59:18,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 19:59:18,353 INFO L130 PetriNetUnfolder]: 305/1118 cut-off events. [2023-08-31 19:59:18,353 INFO L131 PetriNetUnfolder]: For 363/366 co-relation queries the response was YES. [2023-08-31 19:59:18,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2354 conditions, 1118 events. 305/1118 cut-off events. For 363/366 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 6570 event pairs, 207 based on Foata normal form. 6/1082 useless extension candidates. Maximal degree in co-relation 2296. Up to 545 conditions per place. [2023-08-31 19:59:18,359 INFO L137 encePairwiseOnDemand]: 188/191 looper letters, 28 selfloop transitions, 11 changer transitions 0/90 dead transitions. [2023-08-31 19:59:18,359 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 90 transitions, 460 flow [2023-08-31 19:59:18,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-31 19:59:18,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-31 19:59:18,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1397 transitions. [2023-08-31 19:59:18,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6095113438045375 [2023-08-31 19:59:18,363 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1397 transitions. [2023-08-31 19:59:18,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1397 transitions. [2023-08-31 19:59:18,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 19:59:18,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1397 transitions. [2023-08-31 19:59:18,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 116.41666666666667) internal successors, (1397), 12 states have internal predecessors, (1397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:18,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 191.0) internal successors, (2483), 13 states have internal predecessors, (2483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:18,370 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 191.0) internal successors, (2483), 13 states have internal predecessors, (2483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:18,371 INFO L175 Difference]: Start difference. First operand has 79 places, 84 transitions, 346 flow. Second operand 12 states and 1397 transitions. [2023-08-31 19:59:18,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 90 transitions, 460 flow [2023-08-31 19:59:18,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 90 transitions, 459 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 19:59:18,375 INFO L231 Difference]: Finished difference. Result has 95 places, 90 transitions, 429 flow [2023-08-31 19:59:18,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=429, PETRI_PLACES=95, PETRI_TRANSITIONS=90} [2023-08-31 19:59:18,376 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 39 predicate places. [2023-08-31 19:59:18,376 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 90 transitions, 429 flow [2023-08-31 19:59:18,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 114.38461538461539) internal successors, (1487), 13 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:18,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 19:59:18,377 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 19:59:18,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-31 19:59:18,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 19:59:18,582 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-31 19:59:18,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 19:59:18,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1534492163, now seen corresponding path program 2 times [2023-08-31 19:59:18,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 19:59:18,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795891842] [2023-08-31 19:59:18,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 19:59:18,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 19:59:18,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 19:59:18,881 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 19:59:18,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 19:59:18,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795891842] [2023-08-31 19:59:18,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795891842] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 19:59:18,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 19:59:18,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 19:59:18,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394672249] [2023-08-31 19:59:18,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 19:59:18,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 19:59:18,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 19:59:18,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 19:59:18,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-31 19:59:19,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 191 [2023-08-31 19:59:19,062 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 90 transitions, 429 flow. Second operand has 6 states, 6 states have (on average 99.0) internal successors, (594), 6 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:19,062 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 19:59:19,062 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 191 [2023-08-31 19:59:19,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 19:59:19,507 INFO L130 PetriNetUnfolder]: 977/2350 cut-off events. [2023-08-31 19:59:19,507 INFO L131 PetriNetUnfolder]: For 2167/2181 co-relation queries the response was YES. [2023-08-31 19:59:19,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5852 conditions, 2350 events. 977/2350 cut-off events. For 2167/2181 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 13825 event pairs, 394 based on Foata normal form. 0/2258 useless extension candidates. Maximal degree in co-relation 5770. Up to 1488 conditions per place. [2023-08-31 19:59:19,520 INFO L137 encePairwiseOnDemand]: 176/191 looper letters, 127 selfloop transitions, 46 changer transitions 0/192 dead transitions. [2023-08-31 19:59:19,520 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 192 transitions, 1083 flow [2023-08-31 19:59:19,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 19:59:19,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 19:59:19,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 710 transitions. [2023-08-31 19:59:19,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6195462478184991 [2023-08-31 19:59:19,523 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 710 transitions. [2023-08-31 19:59:19,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 710 transitions. [2023-08-31 19:59:19,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 19:59:19,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 710 transitions. [2023-08-31 19:59:19,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 118.33333333333333) internal successors, (710), 6 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:19,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:19,527 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:19,527 INFO L175 Difference]: Start difference. First operand has 95 places, 90 transitions, 429 flow. Second operand 6 states and 710 transitions. [2023-08-31 19:59:19,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 192 transitions, 1083 flow [2023-08-31 19:59:19,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 192 transitions, 1035 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-31 19:59:19,533 INFO L231 Difference]: Finished difference. Result has 100 places, 131 transitions, 709 flow [2023-08-31 19:59:19,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=709, PETRI_PLACES=100, PETRI_TRANSITIONS=131} [2023-08-31 19:59:19,534 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 44 predicate places. [2023-08-31 19:59:19,534 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 131 transitions, 709 flow [2023-08-31 19:59:19,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 99.0) internal successors, (594), 6 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:19,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 19:59:19,535 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 19:59:19,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 19:59:19,535 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-31 19:59:19,535 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 19:59:19,535 INFO L85 PathProgramCache]: Analyzing trace with hash -303030028, now seen corresponding path program 1 times [2023-08-31 19:59:19,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 19:59:19,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657590135] [2023-08-31 19:59:19,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 19:59:19,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 19:59:19,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 19:59:19,876 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 19:59:19,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 19:59:19,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657590135] [2023-08-31 19:59:19,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657590135] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 19:59:19,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 19:59:19,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 19:59:19,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071186031] [2023-08-31 19:59:19,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 19:59:19,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 19:59:19,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 19:59:19,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 19:59:19,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-31 19:59:20,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 191 [2023-08-31 19:59:20,020 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 131 transitions, 709 flow. Second operand has 6 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:20,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 19:59:20,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 191 [2023-08-31 19:59:20,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 19:59:20,634 INFO L130 PetriNetUnfolder]: 1617/3419 cut-off events. [2023-08-31 19:59:20,634 INFO L131 PetriNetUnfolder]: For 4656/4688 co-relation queries the response was YES. [2023-08-31 19:59:20,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10819 conditions, 3419 events. 1617/3419 cut-off events. For 4656/4688 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 19474 event pairs, 555 based on Foata normal form. 0/3295 useless extension candidates. Maximal degree in co-relation 10757. Up to 2681 conditions per place. [2023-08-31 19:59:20,656 INFO L137 encePairwiseOnDemand]: 168/191 looper letters, 170 selfloop transitions, 89 changer transitions 8/274 dead transitions. [2023-08-31 19:59:20,657 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 274 transitions, 1793 flow [2023-08-31 19:59:20,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 19:59:20,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 19:59:20,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 689 transitions. [2023-08-31 19:59:20,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6012216404886562 [2023-08-31 19:59:20,659 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 689 transitions. [2023-08-31 19:59:20,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 689 transitions. [2023-08-31 19:59:20,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 19:59:20,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 689 transitions. [2023-08-31 19:59:20,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 114.83333333333333) internal successors, (689), 6 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:20,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:20,663 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:20,664 INFO L175 Difference]: Start difference. First operand has 100 places, 131 transitions, 709 flow. Second operand 6 states and 689 transitions. [2023-08-31 19:59:20,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 274 transitions, 1793 flow [2023-08-31 19:59:20,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 274 transitions, 1793 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 19:59:20,676 INFO L231 Difference]: Finished difference. Result has 110 places, 214 transitions, 1483 flow [2023-08-31 19:59:20,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1483, PETRI_PLACES=110, PETRI_TRANSITIONS=214} [2023-08-31 19:59:20,677 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 54 predicate places. [2023-08-31 19:59:20,677 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 214 transitions, 1483 flow [2023-08-31 19:59:20,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:20,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 19:59:20,678 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 19:59:20,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 19:59:20,678 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-31 19:59:20,679 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 19:59:20,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1952290432, now seen corresponding path program 1 times [2023-08-31 19:59:20,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 19:59:20,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13159133] [2023-08-31 19:59:20,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 19:59:20,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 19:59:20,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 19:59:21,002 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 19:59:21,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 19:59:21,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13159133] [2023-08-31 19:59:21,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13159133] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 19:59:21,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 19:59:21,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 19:59:21,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034271737] [2023-08-31 19:59:21,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 19:59:21,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 19:59:21,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 19:59:21,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 19:59:21,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-31 19:59:21,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 191 [2023-08-31 19:59:21,127 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 214 transitions, 1483 flow. Second operand has 6 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:21,127 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 19:59:21,127 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 191 [2023-08-31 19:59:21,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 19:59:21,835 INFO L130 PetriNetUnfolder]: 1832/3823 cut-off events. [2023-08-31 19:59:21,835 INFO L131 PetriNetUnfolder]: For 9634/9714 co-relation queries the response was YES. [2023-08-31 19:59:21,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14678 conditions, 3823 events. 1832/3823 cut-off events. For 9634/9714 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 22002 event pairs, 612 based on Foata normal form. 0/3694 useless extension candidates. Maximal degree in co-relation 14611. Up to 3283 conditions per place. [2023-08-31 19:59:21,866 INFO L137 encePairwiseOnDemand]: 176/191 looper letters, 229 selfloop transitions, 72 changer transitions 0/306 dead transitions. [2023-08-31 19:59:21,866 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 306 transitions, 2704 flow [2023-08-31 19:59:21,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 19:59:21,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 19:59:21,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 642 transitions. [2023-08-31 19:59:21,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5602094240837696 [2023-08-31 19:59:21,869 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 642 transitions. [2023-08-31 19:59:21,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 642 transitions. [2023-08-31 19:59:21,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 19:59:21,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 642 transitions. [2023-08-31 19:59:21,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:21,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:21,873 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:21,873 INFO L175 Difference]: Start difference. First operand has 110 places, 214 transitions, 1483 flow. Second operand 6 states and 642 transitions. [2023-08-31 19:59:21,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 306 transitions, 2704 flow [2023-08-31 19:59:21,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 306 transitions, 2572 flow, removed 66 selfloop flow, removed 0 redundant places. [2023-08-31 19:59:21,897 INFO L231 Difference]: Finished difference. Result has 120 places, 268 transitions, 2178 flow [2023-08-31 19:59:21,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=1375, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2178, PETRI_PLACES=120, PETRI_TRANSITIONS=268} [2023-08-31 19:59:21,898 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 64 predicate places. [2023-08-31 19:59:21,898 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 268 transitions, 2178 flow [2023-08-31 19:59:21,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:21,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 19:59:21,899 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 19:59:21,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 19:59:21,899 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-31 19:59:21,900 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 19:59:21,900 INFO L85 PathProgramCache]: Analyzing trace with hash 422815756, now seen corresponding path program 1 times [2023-08-31 19:59:21,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 19:59:21,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667800138] [2023-08-31 19:59:21,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 19:59:21,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 19:59:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 19:59:22,292 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-31 19:59:22,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 19:59:22,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667800138] [2023-08-31 19:59:22,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667800138] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 19:59:22,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26530122] [2023-08-31 19:59:22,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 19:59:22,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 19:59:22,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 19:59:22,294 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) [2023-08-31 19:59:22,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-31 19:59:22,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 19:59:22,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-31 19:59:22,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 19:59:22,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-31 19:59:22,487 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 19:59:22,487 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 19:59:22,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26530122] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 19:59:22,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 19:59:22,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-08-31 19:59:22,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27778490] [2023-08-31 19:59:22,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 19:59:22,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 19:59:22,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 19:59:22,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 19:59:22,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-08-31 19:59:22,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 191 [2023-08-31 19:59:22,615 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 268 transitions, 2178 flow. Second operand has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:22,615 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 19:59:22,615 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 191 [2023-08-31 19:59:22,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 19:59:23,670 INFO L130 PetriNetUnfolder]: 2389/6029 cut-off events. [2023-08-31 19:59:23,671 INFO L131 PetriNetUnfolder]: For 18507/18746 co-relation queries the response was YES. [2023-08-31 19:59:23,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23061 conditions, 6029 events. 2389/6029 cut-off events. For 18507/18746 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 44900 event pairs, 342 based on Foata normal form. 23/5928 useless extension candidates. Maximal degree in co-relation 22989. Up to 1652 conditions per place. [2023-08-31 19:59:23,724 INFO L137 encePairwiseOnDemand]: 183/191 looper letters, 129 selfloop transitions, 12 changer transitions 0/348 dead transitions. [2023-08-31 19:59:23,724 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 348 transitions, 3083 flow [2023-08-31 19:59:23,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 19:59:23,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 19:59:23,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 696 transitions. [2023-08-31 19:59:23,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6073298429319371 [2023-08-31 19:59:23,727 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 696 transitions. [2023-08-31 19:59:23,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 696 transitions. [2023-08-31 19:59:23,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 19:59:23,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 696 transitions. [2023-08-31 19:59:23,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:23,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:23,732 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:23,732 INFO L175 Difference]: Start difference. First operand has 120 places, 268 transitions, 2178 flow. Second operand 6 states and 696 transitions. [2023-08-31 19:59:23,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 348 transitions, 3083 flow [2023-08-31 19:59:23,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 348 transitions, 2881 flow, removed 101 selfloop flow, removed 0 redundant places. [2023-08-31 19:59:23,871 INFO L231 Difference]: Finished difference. Result has 128 places, 278 transitions, 2095 flow [2023-08-31 19:59:23,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=1976, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2095, PETRI_PLACES=128, PETRI_TRANSITIONS=278} [2023-08-31 19:59:23,874 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 72 predicate places. [2023-08-31 19:59:23,874 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 278 transitions, 2095 flow [2023-08-31 19:59:23,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:23,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 19:59:23,875 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 19:59:23,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-31 19:59:24,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 19:59:24,081 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-31 19:59:24,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 19:59:24,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1743318624, now seen corresponding path program 2 times [2023-08-31 19:59:24,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 19:59:24,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758724682] [2023-08-31 19:59:24,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 19:59:24,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 19:59:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 19:59:24,621 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-31 19:59:24,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 19:59:24,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758724682] [2023-08-31 19:59:24,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758724682] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 19:59:24,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695049951] [2023-08-31 19:59:24,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 19:59:24,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 19:59:24,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 19:59:24,623 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 19:59:24,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-31 19:59:24,709 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-31 19:59:24,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 19:59:24,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-31 19:59:24,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 19:59:24,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-31 19:59:24,806 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 19:59:24,806 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 19:59:24,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695049951] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 19:59:24,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 19:59:24,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-08-31 19:59:24,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645832809] [2023-08-31 19:59:24,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 19:59:24,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 19:59:24,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 19:59:24,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 19:59:24,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-31 19:59:24,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 191 [2023-08-31 19:59:24,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 278 transitions, 2095 flow. Second operand has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:24,944 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 19:59:24,944 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 191 [2023-08-31 19:59:24,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 19:59:26,118 INFO L130 PetriNetUnfolder]: 2681/6686 cut-off events. [2023-08-31 19:59:26,119 INFO L131 PetriNetUnfolder]: For 18610/18859 co-relation queries the response was YES. [2023-08-31 19:59:26,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25962 conditions, 6686 events. 2681/6686 cut-off events. For 18610/18859 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 51069 event pairs, 383 based on Foata normal form. 31/6628 useless extension candidates. Maximal degree in co-relation 25885. Up to 1878 conditions per place. [2023-08-31 19:59:26,182 INFO L137 encePairwiseOnDemand]: 184/191 looper letters, 116 selfloop transitions, 19 changer transitions 0/342 dead transitions. [2023-08-31 19:59:26,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 342 transitions, 2888 flow [2023-08-31 19:59:26,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 19:59:26,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 19:59:26,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 688 transitions. [2023-08-31 19:59:26,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6003490401396161 [2023-08-31 19:59:26,185 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 688 transitions. [2023-08-31 19:59:26,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 688 transitions. [2023-08-31 19:59:26,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 19:59:26,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 688 transitions. [2023-08-31 19:59:26,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 114.66666666666667) internal successors, (688), 6 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:26,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:26,248 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:26,248 INFO L175 Difference]: Start difference. First operand has 128 places, 278 transitions, 2095 flow. Second operand 6 states and 688 transitions. [2023-08-31 19:59:26,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 342 transitions, 2888 flow [2023-08-31 19:59:26,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 342 transitions, 2887 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 19:59:26,304 INFO L231 Difference]: Finished difference. Result has 134 places, 287 transitions, 2236 flow [2023-08-31 19:59:26,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=2094, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2236, PETRI_PLACES=134, PETRI_TRANSITIONS=287} [2023-08-31 19:59:26,305 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 78 predicate places. [2023-08-31 19:59:26,305 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 287 transitions, 2236 flow [2023-08-31 19:59:26,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:26,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 19:59:26,306 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 19:59:26,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-31 19:59:26,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 19:59:26,511 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-31 19:59:26,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 19:59:26,512 INFO L85 PathProgramCache]: Analyzing trace with hash -275928975, now seen corresponding path program 1 times [2023-08-31 19:59:26,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 19:59:26,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330363956] [2023-08-31 19:59:26,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 19:59:26,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 19:59:26,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 19:59:26,778 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-31 19:59:26,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 19:59:26,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330363956] [2023-08-31 19:59:26,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330363956] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 19:59:26,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051232629] [2023-08-31 19:59:26,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 19:59:26,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 19:59:26,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 19:59:26,780 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 19:59:26,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-31 19:59:26,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 19:59:26,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-31 19:59:26,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 19:59:26,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-31 19:59:26,966 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 19:59:26,966 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 19:59:26,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051232629] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 19:59:26,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 19:59:26,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-08-31 19:59:26,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134611529] [2023-08-31 19:59:26,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 19:59:26,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 19:59:26,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 19:59:26,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 19:59:26,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-08-31 19:59:27,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 191 [2023-08-31 19:59:27,061 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 287 transitions, 2236 flow. Second operand has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:27,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 19:59:27,061 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 191 [2023-08-31 19:59:27,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 19:59:27,797 INFO L130 PetriNetUnfolder]: 2367/6020 cut-off events. [2023-08-31 19:59:27,797 INFO L131 PetriNetUnfolder]: For 18090/18296 co-relation queries the response was YES. [2023-08-31 19:59:27,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23786 conditions, 6020 events. 2367/6020 cut-off events. For 18090/18296 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 45566 event pairs, 380 based on Foata normal form. 25/5969 useless extension candidates. Maximal degree in co-relation 23706. Up to 1708 conditions per place. [2023-08-31 19:59:27,847 INFO L137 encePairwiseOnDemand]: 184/191 looper letters, 118 selfloop transitions, 22 changer transitions 0/347 dead transitions. [2023-08-31 19:59:27,847 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 347 transitions, 3001 flow [2023-08-31 19:59:27,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 19:59:27,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 19:59:27,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 801 transitions. [2023-08-31 19:59:27,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5991024682124159 [2023-08-31 19:59:27,850 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 801 transitions. [2023-08-31 19:59:27,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 801 transitions. [2023-08-31 19:59:27,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 19:59:27,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 801 transitions. [2023-08-31 19:59:27,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 114.42857142857143) internal successors, (801), 7 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:27,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 191.0) internal successors, (1528), 8 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:27,855 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 191.0) internal successors, (1528), 8 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:27,855 INFO L175 Difference]: Start difference. First operand has 134 places, 287 transitions, 2236 flow. Second operand 7 states and 801 transitions. [2023-08-31 19:59:27,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 347 transitions, 3001 flow [2023-08-31 19:59:27,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 347 transitions, 2987 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-31 19:59:27,902 INFO L231 Difference]: Finished difference. Result has 141 places, 290 transitions, 2326 flow [2023-08-31 19:59:27,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=2201, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2326, PETRI_PLACES=141, PETRI_TRANSITIONS=290} [2023-08-31 19:59:27,903 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 85 predicate places. [2023-08-31 19:59:27,903 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 290 transitions, 2326 flow [2023-08-31 19:59:27,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:27,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 19:59:27,904 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 19:59:27,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-31 19:59:28,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 19:59:28,110 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-31 19:59:28,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 19:59:28,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1455599038, now seen corresponding path program 3 times [2023-08-31 19:59:28,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 19:59:28,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970880361] [2023-08-31 19:59:28,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 19:59:28,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 19:59:28,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 19:59:28,535 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-31 19:59:28,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 19:59:28,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970880361] [2023-08-31 19:59:28,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970880361] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 19:59:28,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443288125] [2023-08-31 19:59:28,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 19:59:28,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 19:59:28,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 19:59:28,538 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 19:59:28,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-31 19:59:28,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-31 19:59:28,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 19:59:28,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-31 19:59:28,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 19:59:28,679 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-31 19:59:28,715 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 19:59:28,715 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 19:59:28,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443288125] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 19:59:28,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 19:59:28,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-08-31 19:59:28,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258799217] [2023-08-31 19:59:28,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 19:59:28,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 19:59:28,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 19:59:28,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 19:59:28,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-31 19:59:28,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 191 [2023-08-31 19:59:28,813 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 290 transitions, 2326 flow. Second operand has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:28,813 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 19:59:28,813 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 191 [2023-08-31 19:59:28,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 19:59:29,864 INFO L130 PetriNetUnfolder]: 2450/6272 cut-off events. [2023-08-31 19:59:29,864 INFO L131 PetriNetUnfolder]: For 21097/21338 co-relation queries the response was YES. [2023-08-31 19:59:29,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25206 conditions, 6272 events. 2450/6272 cut-off events. For 21097/21338 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 50436 event pairs, 286 based on Foata normal form. 12/6191 useless extension candidates. Maximal degree in co-relation 25123. Up to 1680 conditions per place. [2023-08-31 19:59:29,918 INFO L137 encePairwiseOnDemand]: 184/191 looper letters, 130 selfloop transitions, 17 changer transitions 0/354 dead transitions. [2023-08-31 19:59:29,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 354 transitions, 3014 flow [2023-08-31 19:59:29,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 19:59:29,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 19:59:29,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 698 transitions. [2023-08-31 19:59:29,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6090750436300174 [2023-08-31 19:59:29,920 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 698 transitions. [2023-08-31 19:59:29,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 698 transitions. [2023-08-31 19:59:29,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 19:59:29,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 698 transitions. [2023-08-31 19:59:29,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 116.33333333333333) internal successors, (698), 6 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:29,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:29,924 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:29,925 INFO L175 Difference]: Start difference. First operand has 141 places, 290 transitions, 2326 flow. Second operand 6 states and 698 transitions. [2023-08-31 19:59:29,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 354 transitions, 3014 flow [2023-08-31 19:59:29,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 354 transitions, 2974 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-08-31 19:59:29,979 INFO L231 Difference]: Finished difference. Result has 145 places, 293 transitions, 2370 flow [2023-08-31 19:59:29,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=2247, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2370, PETRI_PLACES=145, PETRI_TRANSITIONS=293} [2023-08-31 19:59:29,980 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 89 predicate places. [2023-08-31 19:59:29,980 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 293 transitions, 2370 flow [2023-08-31 19:59:29,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:29,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 19:59:29,981 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 19:59:29,986 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-31 19:59:30,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 19:59:30,186 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-31 19:59:30,186 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 19:59:30,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1142554823, now seen corresponding path program 1 times [2023-08-31 19:59:30,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 19:59:30,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840706051] [2023-08-31 19:59:30,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 19:59:30,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 19:59:30,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 19:59:30,453 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-08-31 19:59:30,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 19:59:30,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840706051] [2023-08-31 19:59:30,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840706051] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 19:59:30,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 19:59:30,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 19:59:30,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068169788] [2023-08-31 19:59:30,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 19:59:30,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 19:59:30,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 19:59:30,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 19:59:30,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-31 19:59:30,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 191 [2023-08-31 19:59:30,618 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 293 transitions, 2370 flow. Second operand has 6 states, 6 states have (on average 101.0) internal successors, (606), 6 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:30,618 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 19:59:30,618 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 191 [2023-08-31 19:59:30,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 19:59:31,720 INFO L130 PetriNetUnfolder]: 3421/7652 cut-off events. [2023-08-31 19:59:31,721 INFO L131 PetriNetUnfolder]: For 32130/32315 co-relation queries the response was YES. [2023-08-31 19:59:31,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34592 conditions, 7652 events. 3421/7652 cut-off events. For 32130/32315 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 57241 event pairs, 770 based on Foata normal form. 71/7693 useless extension candidates. Maximal degree in co-relation 34507. Up to 5537 conditions per place. [2023-08-31 19:59:31,773 INFO L137 encePairwiseOnDemand]: 180/191 looper letters, 271 selfloop transitions, 84 changer transitions 0/406 dead transitions. [2023-08-31 19:59:31,773 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 406 transitions, 4302 flow [2023-08-31 19:59:31,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 19:59:31,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 19:59:31,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 679 transitions. [2023-08-31 19:59:31,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5924956369982548 [2023-08-31 19:59:31,775 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 679 transitions. [2023-08-31 19:59:31,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 679 transitions. [2023-08-31 19:59:31,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 19:59:31,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 679 transitions. [2023-08-31 19:59:31,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 113.16666666666667) internal successors, (679), 6 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:31,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:31,779 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:31,780 INFO L175 Difference]: Start difference. First operand has 145 places, 293 transitions, 2370 flow. Second operand 6 states and 679 transitions. [2023-08-31 19:59:31,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 406 transitions, 4302 flow [2023-08-31 19:59:31,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 406 transitions, 4232 flow, removed 17 selfloop flow, removed 2 redundant places. [2023-08-31 19:59:31,845 INFO L231 Difference]: Finished difference. Result has 153 places, 332 transitions, 3238 flow [2023-08-31 19:59:31,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=2348, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3238, PETRI_PLACES=153, PETRI_TRANSITIONS=332} [2023-08-31 19:59:31,846 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 97 predicate places. [2023-08-31 19:59:31,847 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 332 transitions, 3238 flow [2023-08-31 19:59:31,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.0) internal successors, (606), 6 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:31,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 19:59:31,847 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 19:59:31,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 19:59:31,847 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-31 19:59:31,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 19:59:31,848 INFO L85 PathProgramCache]: Analyzing trace with hash 725617908, now seen corresponding path program 1 times [2023-08-31 19:59:31,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 19:59:31,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546301392] [2023-08-31 19:59:31,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 19:59:31,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 19:59:31,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 19:59:31,899 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 19:59:31,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 19:59:31,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546301392] [2023-08-31 19:59:31,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546301392] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 19:59:31,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20210828] [2023-08-31 19:59:31,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 19:59:31,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 19:59:31,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 19:59:31,901 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 19:59:31,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-31 19:59:32,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 19:59:32,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-31 19:59:32,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 19:59:32,036 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 19:59:32,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 19:59:32,059 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 19:59:32,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20210828] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 19:59:32,060 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 19:59:32,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-08-31 19:59:32,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194179447] [2023-08-31 19:59:32,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 19:59:32,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 19:59:32,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 19:59:32,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 19:59:32,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-31 19:59:32,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 191 [2023-08-31 19:59:32,080 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 332 transitions, 3238 flow. Second operand has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:32,080 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 19:59:32,080 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 191 [2023-08-31 19:59:32,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 19:59:33,618 INFO L130 PetriNetUnfolder]: 3935/9640 cut-off events. [2023-08-31 19:59:33,619 INFO L131 PetriNetUnfolder]: For 45601/46175 co-relation queries the response was YES. [2023-08-31 19:59:33,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44713 conditions, 9640 events. 3935/9640 cut-off events. For 45601/46175 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 73377 event pairs, 419 based on Foata normal form. 131/9678 useless extension candidates. Maximal degree in co-relation 44625. Up to 2700 conditions per place. [2023-08-31 19:59:33,713 INFO L137 encePairwiseOnDemand]: 187/191 looper letters, 195 selfloop transitions, 23 changer transitions 0/455 dead transitions. [2023-08-31 19:59:33,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 455 transitions, 4903 flow [2023-08-31 19:59:33,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 19:59:33,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 19:59:33,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 751 transitions. [2023-08-31 19:59:33,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6553228621291448 [2023-08-31 19:59:33,716 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 751 transitions. [2023-08-31 19:59:33,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 751 transitions. [2023-08-31 19:59:33,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 19:59:33,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 751 transitions. [2023-08-31 19:59:33,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 125.16666666666667) internal successors, (751), 6 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:33,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:33,721 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:33,721 INFO L175 Difference]: Start difference. First operand has 153 places, 332 transitions, 3238 flow. Second operand 6 states and 751 transitions. [2023-08-31 19:59:33,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 455 transitions, 4903 flow [2023-08-31 19:59:33,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 455 transitions, 4763 flow, removed 70 selfloop flow, removed 0 redundant places. [2023-08-31 19:59:33,876 INFO L231 Difference]: Finished difference. Result has 162 places, 341 transitions, 3272 flow [2023-08-31 19:59:33,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=3098, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3272, PETRI_PLACES=162, PETRI_TRANSITIONS=341} [2023-08-31 19:59:33,878 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 106 predicate places. [2023-08-31 19:59:33,878 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 341 transitions, 3272 flow [2023-08-31 19:59:33,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:33,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 19:59:33,879 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 19:59:33,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-31 19:59:34,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-31 19:59:34,083 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-31 19:59:34,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 19:59:34,084 INFO L85 PathProgramCache]: Analyzing trace with hash -492140983, now seen corresponding path program 1 times [2023-08-31 19:59:34,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 19:59:34,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746489010] [2023-08-31 19:59:34,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 19:59:34,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 19:59:34,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 19:59:34,731 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 19:59:34,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 19:59:34,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746489010] [2023-08-31 19:59:34,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746489010] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 19:59:34,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591228162] [2023-08-31 19:59:34,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 19:59:34,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 19:59:34,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 19:59:34,733 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 19:59:34,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-31 19:59:34,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 19:59:34,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-31 19:59:34,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 19:59:35,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-31 19:59:35,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-31 19:59:35,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-31 19:59:35,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-31 19:59:35,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 19:59:35,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 19:59:35,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 19:59:35,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 19:59:35,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-31 19:59:35,413 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 19:59:35,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 19:59:36,286 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 19:59:36,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591228162] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 19:59:36,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 19:59:36,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-08-31 19:59:36,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516513125] [2023-08-31 19:59:36,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 19:59:36,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-31 19:59:36,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 19:59:36,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-31 19:59:36,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=770, Unknown=0, NotChecked=0, Total=930 [2023-08-31 19:59:39,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 191 [2023-08-31 19:59:39,229 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 341 transitions, 3272 flow. Second operand has 31 states, 31 states have (on average 87.54838709677419) internal successors, (2714), 31 states have internal predecessors, (2714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:39,229 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 19:59:39,229 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 191 [2023-08-31 19:59:39,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 19:59:42,081 INFO L130 PetriNetUnfolder]: 6142/13453 cut-off events. [2023-08-31 19:59:42,081 INFO L131 PetriNetUnfolder]: For 70420/70838 co-relation queries the response was YES. [2023-08-31 19:59:42,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68804 conditions, 13453 events. 6142/13453 cut-off events. For 70420/70838 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 100765 event pairs, 631 based on Foata normal form. 63/13474 useless extension candidates. Maximal degree in co-relation 68712. Up to 4627 conditions per place. [2023-08-31 19:59:42,184 INFO L137 encePairwiseOnDemand]: 173/191 looper letters, 736 selfloop transitions, 133 changer transitions 4/924 dead transitions. [2023-08-31 19:59:42,184 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 924 transitions, 10577 flow [2023-08-31 19:59:42,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-31 19:59:42,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-31 19:59:42,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1699 transitions. [2023-08-31 19:59:42,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5232522328303049 [2023-08-31 19:59:42,192 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1699 transitions. [2023-08-31 19:59:42,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1699 transitions. [2023-08-31 19:59:42,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 19:59:42,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1699 transitions. [2023-08-31 19:59:42,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 99.94117647058823) internal successors, (1699), 17 states have internal predecessors, (1699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:42,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 191.0) internal successors, (3438), 18 states have internal predecessors, (3438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:42,201 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 191.0) internal successors, (3438), 18 states have internal predecessors, (3438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:42,201 INFO L175 Difference]: Start difference. First operand has 162 places, 341 transitions, 3272 flow. Second operand 17 states and 1699 transitions. [2023-08-31 19:59:42,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 924 transitions, 10577 flow [2023-08-31 19:59:42,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 924 transitions, 10559 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 19:59:42,345 INFO L231 Difference]: Finished difference. Result has 189 places, 441 transitions, 5151 flow [2023-08-31 19:59:42,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=3262, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5151, PETRI_PLACES=189, PETRI_TRANSITIONS=441} [2023-08-31 19:59:42,345 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 133 predicate places. [2023-08-31 19:59:42,345 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 441 transitions, 5151 flow [2023-08-31 19:59:42,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 87.54838709677419) internal successors, (2714), 31 states have internal predecessors, (2714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:42,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 19:59:42,347 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 19:59:42,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-31 19:59:42,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-31 19:59:42,554 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-31 19:59:42,554 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 19:59:42,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1866728547, now seen corresponding path program 1 times [2023-08-31 19:59:42,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 19:59:42,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830964082] [2023-08-31 19:59:42,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 19:59:42,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 19:59:42,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 19:59:43,151 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 19:59:43,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 19:59:43,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830964082] [2023-08-31 19:59:43,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830964082] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 19:59:43,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441369499] [2023-08-31 19:59:43,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 19:59:43,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 19:59:43,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 19:59:43,153 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 19:59:43,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-31 19:59:43,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 19:59:43,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 41 conjunts are in the unsatisfiable core [2023-08-31 19:59:43,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 19:59:43,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-31 19:59:43,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-31 19:59:43,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-31 19:59:43,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-31 19:59:43,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 19:59:43,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 19:59:43,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 19:59:43,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 19:59:43,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-31 19:59:43,809 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 19:59:43,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 19:59:44,600 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 19:59:44,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441369499] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 19:59:44,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 19:59:44,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-08-31 19:59:44,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938489674] [2023-08-31 19:59:44,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 19:59:44,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-31 19:59:44,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 19:59:44,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-31 19:59:44,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=770, Unknown=0, NotChecked=0, Total=930 [2023-08-31 19:59:46,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 191 [2023-08-31 19:59:46,318 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 441 transitions, 5151 flow. Second operand has 31 states, 31 states have (on average 78.2258064516129) internal successors, (2425), 31 states have internal predecessors, (2425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:46,318 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 19:59:46,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 191 [2023-08-31 19:59:46,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 19:59:51,500 INFO L130 PetriNetUnfolder]: 9904/20673 cut-off events. [2023-08-31 19:59:51,500 INFO L131 PetriNetUnfolder]: For 127278/127575 co-relation queries the response was YES. [2023-08-31 19:59:51,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111399 conditions, 20673 events. 9904/20673 cut-off events. For 127278/127575 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 160851 event pairs, 1672 based on Foata normal form. 146/20799 useless extension candidates. Maximal degree in co-relation 111293. Up to 9654 conditions per place. [2023-08-31 19:59:51,678 INFO L137 encePairwiseOnDemand]: 162/191 looper letters, 1000 selfloop transitions, 171 changer transitions 14/1200 dead transitions. [2023-08-31 19:59:51,679 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 1200 transitions, 14520 flow [2023-08-31 19:59:51,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-31 19:59:51,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-31 19:59:51,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1639 transitions. [2023-08-31 19:59:51,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5047736372035725 [2023-08-31 19:59:51,681 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1639 transitions. [2023-08-31 19:59:51,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1639 transitions. [2023-08-31 19:59:51,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 19:59:51,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1639 transitions. [2023-08-31 19:59:51,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 96.41176470588235) internal successors, (1639), 17 states have internal predecessors, (1639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:51,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 191.0) internal successors, (3438), 18 states have internal predecessors, (3438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:51,688 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 191.0) internal successors, (3438), 18 states have internal predecessors, (3438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:51,688 INFO L175 Difference]: Start difference. First operand has 189 places, 441 transitions, 5151 flow. Second operand 17 states and 1639 transitions. [2023-08-31 19:59:51,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 1200 transitions, 14520 flow [2023-08-31 19:59:52,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 1200 transitions, 14465 flow, removed 27 selfloop flow, removed 1 redundant places. [2023-08-31 19:59:52,073 INFO L231 Difference]: Finished difference. Result has 214 places, 578 transitions, 7629 flow [2023-08-31 19:59:52,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=5124, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=7629, PETRI_PLACES=214, PETRI_TRANSITIONS=578} [2023-08-31 19:59:52,074 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 158 predicate places. [2023-08-31 19:59:52,074 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 578 transitions, 7629 flow [2023-08-31 19:59:52,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 78.2258064516129) internal successors, (2425), 31 states have internal predecessors, (2425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 19:59:52,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 19:59:52,075 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 19:59:52,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-31 19:59:52,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-31 19:59:52,277 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-31 19:59:52,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 19:59:52,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1267003643, now seen corresponding path program 2 times [2023-08-31 19:59:52,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 19:59:52,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857769103] [2023-08-31 19:59:52,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 19:59:52,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 19:59:52,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 19:59:53,194 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 19:59:53,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 19:59:53,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857769103] [2023-08-31 19:59:53,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857769103] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 19:59:53,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409667660] [2023-08-31 19:59:53,195 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 19:59:53,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 19:59:53,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 19:59:53,197 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 19:59:53,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-31 19:59:53,370 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 19:59:53,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 19:59:53,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 54 conjunts are in the unsatisfiable core [2023-08-31 19:59:53,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 19:59:53,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-31 19:59:53,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-31 19:59:53,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-31 19:59:53,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-31 19:59:53,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 19:59:53,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 19:59:53,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 19:59:53,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 19:59:53,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-31 19:59:53,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 19:59:53,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 19:59:53,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 19:59:53,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 19:59:53,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2023-08-31 19:59:53,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 19:59:53,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 19:59:53,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 19:59:53,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 19:59:53,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2023-08-31 19:59:53,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 19:59:53,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 19:59:53,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 19:59:53,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 19:59:53,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2023-08-31 19:59:53,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 19:59:53,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 19:59:53,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 19:59:53,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 19:59:53,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-31 19:59:54,009 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 19:59:54,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 20:00:13,537 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:00:13,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409667660] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 20:00:13,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 20:00:13,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 31 [2023-08-31 20:00:13,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318221022] [2023-08-31 20:00:13,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 20:00:13,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-31 20:00:13,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:00:13,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-31 20:00:13,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=803, Unknown=5, NotChecked=0, Total=992 [2023-08-31 20:00:15,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:00:17,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:00:19,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:00:21,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:00:24,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:00:27,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:00:30,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:00:32,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:00:34,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:00:38,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:00:42,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:00:45,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:00:49,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:00:51,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:00:53,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:00:56,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:00:58,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:01:01,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:01:03,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:01:06,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:01:09,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:01:12,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:01:14,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:01:16,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:01:18,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:01:20,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:01:22,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:01:24,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:01:27,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:01:30,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:01:33,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:01:36,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:01:39,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:01:43,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:01:44,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:01:45,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:01:47,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:01:50,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:01:52,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:01:54,426 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:01:56,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:01:59,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:02:01,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:02:01,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 191 [2023-08-31 20:02:01,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 578 transitions, 7629 flow. Second operand has 32 states, 32 states have (on average 51.21875) internal successors, (1639), 32 states have internal predecessors, (1639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:02:01,637 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:02:01,637 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 191 [2023-08-31 20:02:01,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:02:14,527 INFO L130 PetriNetUnfolder]: 12533/25179 cut-off events. [2023-08-31 20:02:14,527 INFO L131 PetriNetUnfolder]: For 196818/196818 co-relation queries the response was YES. [2023-08-31 20:02:14,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146251 conditions, 25179 events. 12533/25179 cut-off events. For 196818/196818 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 195881 event pairs, 2155 based on Foata normal form. 20/24939 useless extension candidates. Maximal degree in co-relation 146134. Up to 11313 conditions per place. [2023-08-31 20:02:14,760 INFO L137 encePairwiseOnDemand]: 173/191 looper letters, 1056 selfloop transitions, 243 changer transitions 2/1301 dead transitions. [2023-08-31 20:02:14,760 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 1301 transitions, 17862 flow [2023-08-31 20:02:14,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-31 20:02:14,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-31 20:02:14,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1096 transitions. [2023-08-31 20:02:14,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3586387434554974 [2023-08-31 20:02:14,762 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1096 transitions. [2023-08-31 20:02:14,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1096 transitions. [2023-08-31 20:02:14,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:02:14,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1096 transitions. [2023-08-31 20:02:14,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 68.5) internal successors, (1096), 16 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:02:14,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 191.0) internal successors, (3247), 17 states have internal predecessors, (3247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:02:14,766 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 191.0) internal successors, (3247), 17 states have internal predecessors, (3247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:02:14,766 INFO L175 Difference]: Start difference. First operand has 214 places, 578 transitions, 7629 flow. Second operand 16 states and 1096 transitions. [2023-08-31 20:02:14,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 1301 transitions, 17862 flow [2023-08-31 20:02:15,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 1301 transitions, 17718 flow, removed 53 selfloop flow, removed 2 redundant places. [2023-08-31 20:02:15,835 INFO L231 Difference]: Finished difference. Result has 236 places, 691 transitions, 10485 flow [2023-08-31 20:02:15,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=7529, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=10485, PETRI_PLACES=236, PETRI_TRANSITIONS=691} [2023-08-31 20:02:15,836 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 180 predicate places. [2023-08-31 20:02:15,836 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 691 transitions, 10485 flow [2023-08-31 20:02:15,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 51.21875) internal successors, (1639), 32 states have internal predecessors, (1639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:02:15,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:02:15,837 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:02:15,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-31 20:02:16,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-31 20:02:16,037 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-31 20:02:16,038 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:02:16,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1683454459, now seen corresponding path program 2 times [2023-08-31 20:02:16,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:02:16,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301526214] [2023-08-31 20:02:16,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:02:16,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:02:16,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:02:16,535 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:02:16,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:02:16,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301526214] [2023-08-31 20:02:16,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301526214] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 20:02:16,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600820760] [2023-08-31 20:02:16,535 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 20:02:16,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:02:16,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:02:16,537 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 20:02:16,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-31 20:02:16,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 20:02:16,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 20:02:16,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-31 20:02:16,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 20:02:16,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-31 20:02:16,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-31 20:02:17,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-31 20:02:17,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-31 20:02:17,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:02:17,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:02:17,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:02:17,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:02:17,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-31 20:02:17,268 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:02:17,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 20:02:26,543 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:02:26,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600820760] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 20:02:26,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 20:02:26,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-08-31 20:02:26,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670491900] [2023-08-31 20:02:26,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 20:02:26,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-31 20:02:26,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:02:26,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-31 20:02:26,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=747, Unknown=3, NotChecked=0, Total=930 [2023-08-31 20:02:29,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:02:31,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:02:33,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:02:35,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:02:37,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:02:39,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:02:41,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:02:42,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:02:44,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:02:47,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:02:49,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:02:51,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:02:52,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:02:54,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:02:56,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:02:58,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:03:00,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:03:03,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:03:05,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:03:07,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:03:09,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:03:11,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:03:12,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:03:15,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:03:15,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 191 [2023-08-31 20:03:15,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 691 transitions, 10485 flow. Second operand has 31 states, 31 states have (on average 49.32258064516129) internal successors, (1529), 31 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:03:15,421 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:03:15,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 191 [2023-08-31 20:03:15,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:03:28,477 INFO L130 PetriNetUnfolder]: 16506/33147 cut-off events. [2023-08-31 20:03:28,477 INFO L131 PetriNetUnfolder]: For 295676/295676 co-relation queries the response was YES. [2023-08-31 20:03:28,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197333 conditions, 33147 events. 16506/33147 cut-off events. For 295676/295676 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 271729 event pairs, 3306 based on Foata normal form. 106/32860 useless extension candidates. Maximal degree in co-relation 197206. Up to 11696 conditions per place. [2023-08-31 20:03:28,919 INFO L137 encePairwiseOnDemand]: 162/191 looper letters, 1194 selfloop transitions, 286 changer transitions 16/1496 dead transitions. [2023-08-31 20:03:28,920 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 1496 transitions, 21367 flow [2023-08-31 20:03:28,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-31 20:03:28,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-31 20:03:28,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1171 transitions. [2023-08-31 20:03:28,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3831806282722513 [2023-08-31 20:03:28,922 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1171 transitions. [2023-08-31 20:03:28,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1171 transitions. [2023-08-31 20:03:28,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:03:28,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1171 transitions. [2023-08-31 20:03:28,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 73.1875) internal successors, (1171), 16 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:03:28,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 191.0) internal successors, (3247), 17 states have internal predecessors, (3247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:03:28,927 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 191.0) internal successors, (3247), 17 states have internal predecessors, (3247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:03:28,927 INFO L175 Difference]: Start difference. First operand has 236 places, 691 transitions, 10485 flow. Second operand 16 states and 1171 transitions. [2023-08-31 20:03:28,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 1496 transitions, 21367 flow [2023-08-31 20:03:31,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 1496 transitions, 21105 flow, removed 31 selfloop flow, removed 5 redundant places. [2023-08-31 20:03:31,164 INFO L231 Difference]: Finished difference. Result has 256 places, 841 transitions, 13777 flow [2023-08-31 20:03:31,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=10342, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=13777, PETRI_PLACES=256, PETRI_TRANSITIONS=841} [2023-08-31 20:03:31,165 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 200 predicate places. [2023-08-31 20:03:31,166 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 841 transitions, 13777 flow [2023-08-31 20:03:31,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 49.32258064516129) internal successors, (1529), 31 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:03:31,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:03:31,166 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:03:31,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-31 20:03:31,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-31 20:03:31,369 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-31 20:03:31,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:03:31,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1668215551, now seen corresponding path program 3 times [2023-08-31 20:03:31,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:03:31,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817115493] [2023-08-31 20:03:31,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:03:31,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:03:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:03:32,181 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:03:32,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:03:32,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817115493] [2023-08-31 20:03:32,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817115493] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 20:03:32,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975035695] [2023-08-31 20:03:32,182 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 20:03:32,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:03:32,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:03:32,183 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 20:03:32,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-31 20:03:32,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-31 20:03:32,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 20:03:32,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 49 conjunts are in the unsatisfiable core [2023-08-31 20:03:32,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 20:03:32,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-31 20:03:32,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-31 20:03:32,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-31 20:03:32,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-31 20:03:32,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:32,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:32,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:32,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:32,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-31 20:03:32,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:32,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:32,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:32,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:32,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2023-08-31 20:03:32,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:32,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:32,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:32,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:32,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2023-08-31 20:03:32,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:32,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:32,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:32,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:32,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2023-08-31 20:03:32,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:32,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:32,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:32,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:32,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-31 20:03:32,900 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:03:32,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 20:03:49,626 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:03:49,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975035695] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 20:03:49,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 20:03:49,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 32 [2023-08-31 20:03:49,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676633321] [2023-08-31 20:03:49,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 20:03:49,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-31 20:03:49,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:03:49,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-31 20:03:49,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=870, Unknown=6, NotChecked=0, Total=1056 [2023-08-31 20:03:54,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:03:57,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:04:01,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:04:04,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:04:05,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:04:09,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:04:13,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:04:17,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:04:20,471 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:04:26,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:04:27,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:04:29,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:04:32,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:04:34,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:04:36,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:04:38,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:04:44,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:04:46,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:04:48,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:04:52,674 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:04:56,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:04:57,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:05:00,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:05:02,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:05:04,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:05:09,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:05:12,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:05:16,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:05:20,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:05:23,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:05:26,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:05:28,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:05:30,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:05:34,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:05:35,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:05:37,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:05:40,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:05:43,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:05:45,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:05:50,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:05:54,912 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:05:55,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:05:57,993 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:06:00,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:06:02,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:06:05,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:06:09,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:06:10,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:06:13,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:06:16,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:06:20,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:06:23,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:06:25,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:06:27,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:06:27,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 191 [2023-08-31 20:06:27,388 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 841 transitions, 13777 flow. Second operand has 33 states, 33 states have (on average 51.121212121212125) internal successors, (1687), 33 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:06:27,388 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:06:27,388 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 191 [2023-08-31 20:06:27,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:06:49,320 INFO L130 PetriNetUnfolder]: 24720/49674 cut-off events. [2023-08-31 20:06:49,320 INFO L131 PetriNetUnfolder]: For 520027/520027 co-relation queries the response was YES. [2023-08-31 20:06:49,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310681 conditions, 49674 events. 24720/49674 cut-off events. For 520027/520027 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 404122 event pairs, 5255 based on Foata normal form. 65/49136 useless extension candidates. Maximal degree in co-relation 310544. Up to 25024 conditions per place. [2023-08-31 20:06:50,070 INFO L137 encePairwiseOnDemand]: 172/191 looper letters, 2092 selfloop transitions, 466 changer transitions 0/2558 dead transitions. [2023-08-31 20:06:50,070 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 2558 transitions, 38592 flow [2023-08-31 20:06:50,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-31 20:06:50,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-31 20:06:50,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2043 transitions. [2023-08-31 20:06:50,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36883914063910456 [2023-08-31 20:06:50,074 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2043 transitions. [2023-08-31 20:06:50,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2043 transitions. [2023-08-31 20:06:50,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:06:50,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2043 transitions. [2023-08-31 20:06:50,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 70.44827586206897) internal successors, (2043), 29 states have internal predecessors, (2043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:06:50,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 191.0) internal successors, (5730), 30 states have internal predecessors, (5730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:06:50,082 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 191.0) internal successors, (5730), 30 states have internal predecessors, (5730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:06:50,082 INFO L175 Difference]: Start difference. First operand has 256 places, 841 transitions, 13777 flow. Second operand 29 states and 2043 transitions. [2023-08-31 20:06:50,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 2558 transitions, 38592 flow [2023-08-31 20:06:54,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 2558 transitions, 38112 flow, removed 173 selfloop flow, removed 4 redundant places. [2023-08-31 20:06:54,413 INFO L231 Difference]: Finished difference. Result has 301 places, 1136 transitions, 20912 flow [2023-08-31 20:06:54,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=13542, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=841, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=551, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=20912, PETRI_PLACES=301, PETRI_TRANSITIONS=1136} [2023-08-31 20:06:54,414 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 245 predicate places. [2023-08-31 20:06:54,414 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 1136 transitions, 20912 flow [2023-08-31 20:06:54,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 51.121212121212125) internal successors, (1687), 33 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:06:54,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:06:54,415 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:06:54,421 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-08-31 20:06:54,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-31 20:06:54,620 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-31 20:06:54,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:06:54,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1715520455, now seen corresponding path program 3 times [2023-08-31 20:06:54,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:06:54,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886446968] [2023-08-31 20:06:54,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:06:54,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:06:54,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:06:55,133 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:06:55,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:06:55,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886446968] [2023-08-31 20:06:55,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886446968] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 20:06:55,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467328963] [2023-08-31 20:06:55,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 20:06:55,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:06:55,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:06:55,135 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 20:06:55,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-31 20:06:55,301 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-31 20:06:55,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 20:06:55,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 44 conjunts are in the unsatisfiable core [2023-08-31 20:06:55,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 20:06:55,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-31 20:06:55,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-31 20:06:55,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-31 20:06:55,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-31 20:06:55,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:06:55,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:06:55,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:06:55,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:06:55,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-31 20:06:55,781 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:06:55,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 20:07:05,639 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:07:05,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467328963] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 20:07:05,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 20:07:05,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-08-31 20:07:05,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63187930] [2023-08-31 20:07:05,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 20:07:05,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-31 20:07:05,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:07:05,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-31 20:07:05,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=807, Unknown=2, NotChecked=0, Total=992 [2023-08-31 20:07:07,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:07:09,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:07:11,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:07:13,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:07:15,426 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:07:17,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:07:19,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:07:21,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:07:23,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:07:26,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:07:28,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:07:30,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:07:32,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:07:34,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:07:37,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:07:40,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:07:43,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:07:46,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:07:49,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:07:52,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:07:54,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:07:56,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:07:58,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:08:01,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:08:01,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 191 [2023-08-31 20:08:01,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 1136 transitions, 20912 flow. Second operand has 32 states, 32 states have (on average 49.21875) internal successors, (1575), 32 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:08:01,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:08:01,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 191 [2023-08-31 20:08:01,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:08:32,908 INFO L130 PetriNetUnfolder]: 38233/76777 cut-off events. [2023-08-31 20:08:32,908 INFO L131 PetriNetUnfolder]: For 868991/868991 co-relation queries the response was YES. [2023-08-31 20:08:34,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499550 conditions, 76777 events. 38233/76777 cut-off events. For 868991/868991 co-relation queries the response was YES. Maximal size of possible extension queue 871. Compared 685724 event pairs, 7576 based on Foata normal form. 108/75742 useless extension candidates. Maximal degree in co-relation 499392. Up to 26145 conditions per place. [2023-08-31 20:08:34,797 INFO L137 encePairwiseOnDemand]: 161/191 looper letters, 2947 selfloop transitions, 839 changer transitions 34/3820 dead transitions. [2023-08-31 20:08:34,797 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 3820 transitions, 60032 flow [2023-08-31 20:08:34,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-08-31 20:08:34,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-08-31 20:08:34,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2530 transitions. [2023-08-31 20:08:34,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4013961605584642 [2023-08-31 20:08:34,801 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2530 transitions. [2023-08-31 20:08:34,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2530 transitions. [2023-08-31 20:08:34,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:08:34,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2530 transitions. [2023-08-31 20:08:34,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 76.66666666666667) internal successors, (2530), 33 states have internal predecessors, (2530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:08:34,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 191.0) internal successors, (6494), 34 states have internal predecessors, (6494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:08:34,811 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 191.0) internal successors, (6494), 34 states have internal predecessors, (6494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:08:34,811 INFO L175 Difference]: Start difference. First operand has 301 places, 1136 transitions, 20912 flow. Second operand 33 states and 2530 transitions. [2023-08-31 20:08:34,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 3820 transitions, 60032 flow [2023-08-31 20:08:46,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 3820 transitions, 59151 flow, removed 440 selfloop flow, removed 1 redundant places. [2023-08-31 20:08:46,802 INFO L231 Difference]: Finished difference. Result has 355 places, 1804 transitions, 35348 flow [2023-08-31 20:08:46,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=20365, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=647, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=35348, PETRI_PLACES=355, PETRI_TRANSITIONS=1804} [2023-08-31 20:08:46,803 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 299 predicate places. [2023-08-31 20:08:46,803 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 1804 transitions, 35348 flow [2023-08-31 20:08:46,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 49.21875) internal successors, (1575), 32 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:08:46,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:08:46,804 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:08:46,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-31 20:08:47,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:08:47,010 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-31 20:08:47,010 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:08:47,010 INFO L85 PathProgramCache]: Analyzing trace with hash -2095055811, now seen corresponding path program 4 times [2023-08-31 20:08:47,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:08:47,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5849802] [2023-08-31 20:08:47,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:08:47,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:08:47,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:08:47,890 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:08:47,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:08:47,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5849802] [2023-08-31 20:08:47,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5849802] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 20:08:47,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460448480] [2023-08-31 20:08:47,890 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-31 20:08:47,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:08:47,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:08:47,892 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 20:08:47,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-31 20:08:48,144 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-31 20:08:48,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 20:08:48,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 66 conjunts are in the unsatisfiable core [2023-08-31 20:08:48,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 20:08:48,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-31 20:08:48,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-31 20:08:48,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-31 20:08:48,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-31 20:08:48,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:48,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:48,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:48,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:48,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-31 20:08:48,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:48,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:48,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:48,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:48,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2023-08-31 20:08:48,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:48,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:48,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:48,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:48,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2023-08-31 20:08:48,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:48,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:48,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:48,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:48,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2023-08-31 20:08:48,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:48,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:48,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:48,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:48,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:48,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:48,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:48,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:48,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:48,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:48,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:48,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:48,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:48,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:48,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:48,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:48,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 84 [2023-08-31 20:08:56,825 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:08:56,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 20:09:13,091 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:09:13,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460448480] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 20:09:13,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 20:09:13,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 15] total 37 [2023-08-31 20:09:13,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302826092] [2023-08-31 20:09:13,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 20:09:13,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-08-31 20:09:13,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:09:13,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-08-31 20:09:13,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=1179, Unknown=4, NotChecked=0, Total=1406 [2023-08-31 20:09:16,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:09:18,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:09:21,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:09:22,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:09:24,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:09:26,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:09:28,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:09:31,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:09:33,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:09:35,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:09:37,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:09:39,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:09:43,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:09:45,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:09:47,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:09:50,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:09:53,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:09:55,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:09:59,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:10:01,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:10:03,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:10:05,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:10:08,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:10:10,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:10:13,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:10:15,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:10:17,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:10:20,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:10:22,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:10:24,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:10:27,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:10:29,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:10:31,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:10:31,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 191 [2023-08-31 20:10:31,753 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 1804 transitions, 35348 flow. Second operand has 38 states, 38 states have (on average 50.71052631578947) internal successors, (1927), 38 states have internal predecessors, (1927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:10:31,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:10:31,753 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 191 [2023-08-31 20:10:31,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:10:41,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:10:43,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:10:46,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:10:48,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:10:50,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:10:55,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:10:58,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:11:01,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:11:04,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:11:06,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:11:10,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:12:01,641 INFO L130 PetriNetUnfolder]: 47797/96004 cut-off events. [2023-08-31 20:12:01,642 INFO L131 PetriNetUnfolder]: For 1466655/1466655 co-relation queries the response was YES. [2023-08-31 20:12:04,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 683618 conditions, 96004 events. 47797/96004 cut-off events. For 1466655/1466655 co-relation queries the response was YES. Maximal size of possible extension queue 1059. Compared 874211 event pairs, 10284 based on Foata normal form. 65/94716 useless extension candidates. Maximal degree in co-relation 683436. Up to 34788 conditions per place. [2023-08-31 20:12:04,622 INFO L137 encePairwiseOnDemand]: 171/191 looper letters, 3107 selfloop transitions, 965 changer transitions 2/4074 dead transitions. [2023-08-31 20:12:04,622 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 4074 transitions, 77180 flow [2023-08-31 20:12:04,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-31 20:12:04,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-31 20:12:04,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 2223 transitions. [2023-08-31 20:12:04,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3637107329842932 [2023-08-31 20:12:04,626 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 2223 transitions. [2023-08-31 20:12:04,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 2223 transitions. [2023-08-31 20:12:04,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:12:04,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 2223 transitions. [2023-08-31 20:12:04,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 69.46875) internal successors, (2223), 32 states have internal predecessors, (2223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:12:04,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 191.0) internal successors, (6303), 33 states have internal predecessors, (6303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:12:04,637 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 191.0) internal successors, (6303), 33 states have internal predecessors, (6303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:12:04,637 INFO L175 Difference]: Start difference. First operand has 355 places, 1804 transitions, 35348 flow. Second operand 32 states and 2223 transitions. [2023-08-31 20:12:04,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 4074 transitions, 77180 flow [2023-08-31 20:12:25,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 4074 transitions, 75734 flow, removed 388 selfloop flow, removed 5 redundant places. [2023-08-31 20:12:25,806 INFO L231 Difference]: Finished difference. Result has 403 places, 2284 transitions, 49484 flow [2023-08-31 20:12:25,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=34561, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1804, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=510, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=49484, PETRI_PLACES=403, PETRI_TRANSITIONS=2284} [2023-08-31 20:12:25,807 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 347 predicate places. [2023-08-31 20:12:25,807 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 2284 transitions, 49484 flow [2023-08-31 20:12:25,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 50.71052631578947) internal successors, (1927), 38 states have internal predecessors, (1927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:12:25,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:12:25,808 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:12:25,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-31 20:12:26,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:12:26,009 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-31 20:12:26,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:12:26,009 INFO L85 PathProgramCache]: Analyzing trace with hash -2019197861, now seen corresponding path program 4 times [2023-08-31 20:12:26,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:12:26,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620856762] [2023-08-31 20:12:26,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:12:26,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:12:26,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:12:26,440 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:12:26,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:12:26,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620856762] [2023-08-31 20:12:26,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620856762] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 20:12:26,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073807128] [2023-08-31 20:12:26,440 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-31 20:12:26,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:12:26,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:12:26,445 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 20:12:26,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-31 20:12:26,776 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-31 20:12:26,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 20:12:26,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-31 20:12:26,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 20:12:27,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-31 20:12:27,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-31 20:12:27,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-31 20:12:27,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-31 20:12:27,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:12:27,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:12:27,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:12:27,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:12:27,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-31 20:12:27,257 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:12:27,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 20:12:41,131 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:12:41,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073807128] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 20:12:41,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 20:12:41,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-08-31 20:12:41,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710278162] [2023-08-31 20:12:41,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 20:12:41,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-31 20:12:41,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:12:41,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-31 20:12:41,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=812, Unknown=6, NotChecked=0, Total=992 [2023-08-31 20:12:43,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:12:45,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:12:47,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:12:49,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:12:51,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:12:54,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:12:56,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:13:00,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:13:02,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:13:05,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] Killed by 15