./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/06-symbeq_08-tricky_address3.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_08-tricky_address3.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 a812aad62102b8bb20af57f89ce6dbf7fb9ee1fa63f6f8ecf164ccf61d0713cb --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 20:03:16,546 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 20:03:16,548 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 20:03:16,590 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 20:03:16,590 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 20:03:16,593 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 20:03:16,595 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 20:03:16,598 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 20:03:16,600 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 20:03:16,604 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 20:03:16,605 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 20:03:16,607 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 20:03:16,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 20:03:16,609 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 20:03:16,610 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 20:03:16,616 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 20:03:16,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 20:03:16,619 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 20:03:16,621 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 20:03:16,623 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 20:03:16,627 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 20:03:16,635 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 20:03:16,637 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 20:03:16,638 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 20:03:16,640 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 20:03:16,644 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 20:03:16,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 20:03:16,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 20:03:16,647 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 20:03:16,648 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 20:03:16,648 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 20:03:16,649 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 20:03:16,650 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 20:03:16,651 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 20:03:16,652 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 20:03:16,652 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 20:03:16,653 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 20:03:16,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 20:03:16,654 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 20:03:16,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 20:03:16,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 20:03:16,656 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-31 20:03:16,689 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 20:03:16,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 20:03:16,690 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 20:03:16,691 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 20:03:16,691 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 20:03:16,692 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 20:03:16,692 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 20:03:16,692 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 20:03:16,692 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 20:03:16,693 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 20:03:16,694 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 20:03:16,694 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 20:03:16,694 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 20:03:16,694 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 20:03:16,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 20:03:16,694 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 20:03:16,695 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 20:03:16,695 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 20:03:16,695 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-31 20:03:16,695 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 20:03:16,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 20:03:16,696 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 20:03:16,696 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 20:03:16,696 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 20:03:16,696 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 20:03:16,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 20:03:16,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:03:16,697 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 20:03:16,697 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 20:03:16,697 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 20:03:16,697 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 20:03:16,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 20:03:16,698 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 20:03:16,698 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 20:03:16,698 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 20:03:16,699 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 20:03:16,699 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 20:03:16,699 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a812aad62102b8bb20af57f89ce6dbf7fb9ee1fa63f6f8ecf164ccf61d0713cb Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 20:03:16,996 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 20:03:17,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 20:03:17,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 20:03:17,023 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 20:03:17,023 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 20:03:17,025 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/06-symbeq_08-tricky_address3.i [2023-08-31 20:03:18,224 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 20:03:18,553 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 20:03:18,554 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/06-symbeq_08-tricky_address3.i [2023-08-31 20:03:18,575 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b0973a48/ff470e3fd5764facb3e6836e2bc69852/FLAG7ad0c5e03 [2023-08-31 20:03:18,589 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b0973a48/ff470e3fd5764facb3e6836e2bc69852 [2023-08-31 20:03:18,591 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 20:03:18,593 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 20:03:18,595 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 20:03:18,595 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 20:03:18,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 20:03:18,598 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:03:18" (1/1) ... [2023-08-31 20:03:18,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51f838da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:03:18, skipping insertion in model container [2023-08-31 20:03:18,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:03:18" (1/1) ... [2023-08-31 20:03:18,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 20:03:18,661 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 20:03:19,093 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:03:19,116 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 20:03:19,190 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:03:19,246 INFO L208 MainTranslator]: Completed translation [2023-08-31 20:03:19,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:03:19 WrapperNode [2023-08-31 20:03:19,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 20:03:19,248 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 20:03:19,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 20:03:19,248 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 20:03:19,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:03:19" (1/1) ... [2023-08-31 20:03:19,275 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:03:19" (1/1) ... [2023-08-31 20:03:19,298 INFO L138 Inliner]: procedures = 264, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 93 [2023-08-31 20:03:19,298 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 20:03:19,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 20:03:19,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 20:03:19,299 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 20:03:19,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:03:19" (1/1) ... [2023-08-31 20:03:19,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:03:19" (1/1) ... [2023-08-31 20:03:19,310 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:03:19" (1/1) ... [2023-08-31 20:03:19,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:03:19" (1/1) ... [2023-08-31 20:03:19,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:03:19" (1/1) ... [2023-08-31 20:03:19,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:03:19" (1/1) ... [2023-08-31 20:03:19,323 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:03:19" (1/1) ... [2023-08-31 20:03:19,324 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:03:19" (1/1) ... [2023-08-31 20:03:19,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 20:03:19,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 20:03:19,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 20:03:19,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 20:03:19,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:03:19" (1/1) ... [2023-08-31 20:03:19,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:03:19,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:03:19,370 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 20:03:19,378 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 20:03:19,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 20:03:19,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 20:03:19,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 20:03:19,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 20:03:19,404 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-31 20:03:19,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 20:03:19,407 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-31 20:03:19,407 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-31 20:03:19,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 20:03:19,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 20:03:19,409 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 20:03:19,516 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 20:03:19,517 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 20:03:19,819 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 20:03:19,824 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 20:03:19,825 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-31 20:03:19,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:03:19 BoogieIcfgContainer [2023-08-31 20:03:19,827 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 20:03:19,828 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 20:03:19,828 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 20:03:19,831 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 20:03:19,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 08:03:18" (1/3) ... [2023-08-31 20:03:19,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@280d5fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:03:19, skipping insertion in model container [2023-08-31 20:03:19,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:03:19" (2/3) ... [2023-08-31 20:03:19,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@280d5fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:03:19, skipping insertion in model container [2023-08-31 20:03:19,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:03:19" (3/3) ... [2023-08-31 20:03:19,835 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_08-tricky_address3.i [2023-08-31 20:03:19,843 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 20:03:19,851 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 20:03:19,852 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-31 20:03:19,852 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 20:03:19,954 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 20:03:19,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 101 transitions, 207 flow [2023-08-31 20:03:20,066 INFO L130 PetriNetUnfolder]: 4/100 cut-off events. [2023-08-31 20:03:20,067 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:03:20,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 100 events. 4/100 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 80 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2023-08-31 20:03:20,072 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 101 transitions, 207 flow [2023-08-31 20:03:20,077 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 100 transitions, 203 flow [2023-08-31 20:03:20,081 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:03:20,096 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 100 places, 100 transitions, 203 flow [2023-08-31 20:03:20,099 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 100 places, 100 transitions, 203 flow [2023-08-31 20:03:20,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 100 transitions, 203 flow [2023-08-31 20:03:20,134 INFO L130 PetriNetUnfolder]: 4/100 cut-off events. [2023-08-31 20:03:20,134 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:03:20,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 100 events. 4/100 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 80 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2023-08-31 20:03:20,137 INFO L119 LiptonReduction]: Number of co-enabled transitions 2262 [2023-08-31 20:03:21,873 INFO L134 LiptonReduction]: Checked pairs total: 9365 [2023-08-31 20:03:21,873 INFO L136 LiptonReduction]: Total number of compositions: 75 [2023-08-31 20:03:21,889 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 20:03:21,894 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;@3484e2cb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:03:21,895 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-31 20:03:21,900 INFO L130 PetriNetUnfolder]: 2/18 cut-off events. [2023-08-31 20:03:21,900 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:03:21,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:03:21,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:03:21,901 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:03:21,905 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:03:21,906 INFO L85 PathProgramCache]: Analyzing trace with hash -628209357, now seen corresponding path program 1 times [2023-08-31 20:03:21,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:03:21,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655462631] [2023-08-31 20:03:21,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:03:21,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:03:21,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:03:22,111 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 20:03:22,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:03:22,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655462631] [2023-08-31 20:03:22,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655462631] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:03:22,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:03:22,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 20:03:22,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185785516] [2023-08-31 20:03:22,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:03:22,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 20:03:22,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:03:22,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 20:03:22,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 20:03:22,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 176 [2023-08-31 20:03:22,163 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 79 flow. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states 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 20:03:22,164 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:03:22,164 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 176 [2023-08-31 20:03:22,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:03:22,221 INFO L130 PetriNetUnfolder]: 37/165 cut-off events. [2023-08-31 20:03:22,221 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:03:22,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 165 events. 37/165 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 630 event pairs, 36 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 244. Up to 89 conditions per place. [2023-08-31 20:03:22,224 INFO L137 encePairwiseOnDemand]: 172/176 looper letters, 15 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2023-08-31 20:03:22,224 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 37 transitions, 111 flow [2023-08-31 20:03:22,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 20:03:22,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 20:03:22,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 298 transitions. [2023-08-31 20:03:22,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5643939393939394 [2023-08-31 20:03:22,237 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 298 transitions. [2023-08-31 20:03:22,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 298 transitions. [2023-08-31 20:03:22,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:03:22,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 298 transitions. [2023-08-31 20:03:22,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states 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 20:03:22,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states 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 20:03:22,250 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states 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 20:03:22,252 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 79 flow. Second operand 3 states and 298 transitions. [2023-08-31 20:03:22,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 37 transitions, 111 flow [2023-08-31 20:03:22,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 37 transitions, 110 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 20:03:22,258 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 86 flow [2023-08-31 20:03:22,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-08-31 20:03:22,265 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2023-08-31 20:03:22,266 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 86 flow [2023-08-31 20:03:22,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states 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 20:03:22,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:03:22,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:03:22,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 20:03:22,267 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:03:22,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:03:22,275 INFO L85 PathProgramCache]: Analyzing trace with hash -369379357, now seen corresponding path program 1 times [2023-08-31 20:03:22,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:03:22,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120457410] [2023-08-31 20:03:22,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:03:22,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:03:22,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:03:22,386 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 20:03:22,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:03:22,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120457410] [2023-08-31 20:03:22,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120457410] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 20:03:22,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318600065] [2023-08-31 20:03:22,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:03:22,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:03:22,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:03:22,389 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 20:03:22,390 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 20:03:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:03:22,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-31 20:03:22,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 20:03:22,493 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 20:03:22,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 20:03:22,509 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 20:03:22,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318600065] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 20:03:22,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 20:03:22,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-31 20:03:22,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183035032] [2023-08-31 20:03:22,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 20:03:22,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 20:03:22,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:03:22,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 20:03:22,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-31 20:03:22,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 176 [2023-08-31 20:03:22,530 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 86 flow. Second operand has 6 states, 6 states have (on average 93.5) internal successors, (561), 6 states have internal predecessors, (561), 0 states have call successors, (0), 0 states 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 20:03:22,531 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:03:22,531 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 176 [2023-08-31 20:03:22,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:03:22,593 INFO L130 PetriNetUnfolder]: 37/168 cut-off events. [2023-08-31 20:03:22,607 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:03:22,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 168 events. 37/168 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 626 event pairs, 36 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 263. Up to 89 conditions per place. [2023-08-31 20:03:22,609 INFO L137 encePairwiseOnDemand]: 173/176 looper letters, 15 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2023-08-31 20:03:22,609 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 40 transitions, 138 flow [2023-08-31 20:03:22,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 20:03:22,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 20:03:22,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 575 transitions. [2023-08-31 20:03:22,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5445075757575758 [2023-08-31 20:03:22,614 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 575 transitions. [2023-08-31 20:03:22,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 575 transitions. [2023-08-31 20:03:22,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:03:22,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 575 transitions. [2023-08-31 20:03:22,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 95.83333333333333) internal successors, (575), 6 states have internal predecessors, (575), 0 states have call successors, (0), 0 states 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 20:03:22,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states 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 20:03:22,633 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states 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 20:03:22,634 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 86 flow. Second operand 6 states and 575 transitions. [2023-08-31 20:03:22,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 40 transitions, 138 flow [2023-08-31 20:03:22,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 40 transitions, 134 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-31 20:03:22,635 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 118 flow [2023-08-31 20:03:22,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=118, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2023-08-31 20:03:22,636 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 8 predicate places. [2023-08-31 20:03:22,636 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 118 flow [2023-08-31 20:03:22,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 93.5) internal successors, (561), 6 states have internal predecessors, (561), 0 states have call successors, (0), 0 states 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 20:03:22,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:03:22,637 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:03:22,655 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 20:03:22,843 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 20:03:22,844 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:03:22,844 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:03:22,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1157557643, now seen corresponding path program 2 times [2023-08-31 20:03:22,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:03:22,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703589194] [2023-08-31 20:03:22,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:03:22,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:03:22,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:03:23,231 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 20:03:23,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:03:23,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703589194] [2023-08-31 20:03:23,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703589194] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:03:23,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:03:23,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 20:03:23,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017904668] [2023-08-31 20:03:23,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:03:23,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 20:03:23,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:03:23,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 20:03:23,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-31 20:03:23,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 176 [2023-08-31 20:03:23,368 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 118 flow. Second operand has 6 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 0 states have call successors, (0), 0 states 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 20:03:23,368 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:03:23,369 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 176 [2023-08-31 20:03:23,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:03:23,548 INFO L130 PetriNetUnfolder]: 162/398 cut-off events. [2023-08-31 20:03:23,548 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 20:03:23,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 785 conditions, 398 events. 162/398 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1687 event pairs, 74 based on Foata normal form. 0/392 useless extension candidates. Maximal degree in co-relation 752. Up to 265 conditions per place. [2023-08-31 20:03:23,556 INFO L137 encePairwiseOnDemand]: 165/176 looper letters, 52 selfloop transitions, 22 changer transitions 0/82 dead transitions. [2023-08-31 20:03:23,556 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 82 transitions, 350 flow [2023-08-31 20:03:23,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 20:03:23,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 20:03:23,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 557 transitions. [2023-08-31 20:03:23,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5274621212121212 [2023-08-31 20:03:23,562 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 557 transitions. [2023-08-31 20:03:23,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 557 transitions. [2023-08-31 20:03:23,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:03:23,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 557 transitions. [2023-08-31 20:03:23,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 92.83333333333333) internal successors, (557), 6 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:03:23,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states 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 20:03:23,570 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states 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 20:03:23,570 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 118 flow. Second operand 6 states and 557 transitions. [2023-08-31 20:03:23,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 82 transitions, 350 flow [2023-08-31 20:03:23,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 82 transitions, 336 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-31 20:03:23,575 INFO L231 Difference]: Finished difference. Result has 57 places, 61 transitions, 254 flow [2023-08-31 20:03:23,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=254, PETRI_PLACES=57, PETRI_TRANSITIONS=61} [2023-08-31 20:03:23,577 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 17 predicate places. [2023-08-31 20:03:23,577 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 61 transitions, 254 flow [2023-08-31 20:03:23,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 0 states have call successors, (0), 0 states 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 20:03:23,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:03:23,578 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:03:23,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 20:03:23,579 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:03:23,579 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:03:23,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1092228275, now seen corresponding path program 1 times [2023-08-31 20:03:23,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:03:23,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484668968] [2023-08-31 20:03:23,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:03:23,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:03:23,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:03:23,835 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 20:03:23,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:03:23,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484668968] [2023-08-31 20:03:23,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484668968] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:03:23,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:03:23,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 20:03:23,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646985333] [2023-08-31 20:03:23,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:03:23,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 20:03:23,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:03:23,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 20:03:23,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-31 20:03:23,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 176 [2023-08-31 20:03:23,975 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 61 transitions, 254 flow. Second operand has 6 states, 6 states have (on average 80.83333333333333) internal successors, (485), 6 states have internal predecessors, (485), 0 states have call successors, (0), 0 states 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 20:03:23,975 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:03:23,975 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 176 [2023-08-31 20:03:23,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:03:24,161 INFO L130 PetriNetUnfolder]: 190/476 cut-off events. [2023-08-31 20:03:24,161 INFO L131 PetriNetUnfolder]: For 143/146 co-relation queries the response was YES. [2023-08-31 20:03:24,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1113 conditions, 476 events. 190/476 cut-off events. For 143/146 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2233 event pairs, 76 based on Foata normal form. 0/466 useless extension candidates. Maximal degree in co-relation 1082. Up to 312 conditions per place. [2023-08-31 20:03:24,165 INFO L137 encePairwiseOnDemand]: 165/176 looper letters, 63 selfloop transitions, 26 changer transitions 0/102 dead transitions. [2023-08-31 20:03:24,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 102 transitions, 532 flow [2023-08-31 20:03:24,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 20:03:24,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 20:03:24,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 543 transitions. [2023-08-31 20:03:24,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5142045454545454 [2023-08-31 20:03:24,167 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 543 transitions. [2023-08-31 20:03:24,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 543 transitions. [2023-08-31 20:03:24,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:03:24,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 543 transitions. [2023-08-31 20:03:24,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.5) internal successors, (543), 6 states have internal predecessors, (543), 0 states have call successors, (0), 0 states 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 20:03:24,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states 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 20:03:24,172 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states 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 20:03:24,172 INFO L175 Difference]: Start difference. First operand has 57 places, 61 transitions, 254 flow. Second operand 6 states and 543 transitions. [2023-08-31 20:03:24,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 102 transitions, 532 flow [2023-08-31 20:03:24,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 102 transitions, 532 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 20:03:24,176 INFO L231 Difference]: Finished difference. Result has 67 places, 82 transitions, 438 flow [2023-08-31 20:03:24,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=438, PETRI_PLACES=67, PETRI_TRANSITIONS=82} [2023-08-31 20:03:24,177 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 27 predicate places. [2023-08-31 20:03:24,177 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 82 transitions, 438 flow [2023-08-31 20:03:24,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 80.83333333333333) internal successors, (485), 6 states have internal predecessors, (485), 0 states have call successors, (0), 0 states 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 20:03:24,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:03:24,178 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:03:24,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 20:03:24,178 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:03:24,179 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:03:24,179 INFO L85 PathProgramCache]: Analyzing trace with hash 547459376, now seen corresponding path program 1 times [2023-08-31 20:03:24,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:03:24,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024058368] [2023-08-31 20:03:24,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:03:24,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:03:24,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:03:24,252 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 20:03:24,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:03:24,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024058368] [2023-08-31 20:03:24,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024058368] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 20:03:24,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913064652] [2023-08-31 20:03:24,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:03:24,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:03:24,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:03:24,255 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 20:03:24,280 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 20:03:24,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:03:24,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-31 20:03:24,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 20:03:24,368 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 20:03:24,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 20:03:24,425 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 20:03:24,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913064652] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 20:03:24,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 20:03:24,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-08-31 20:03:24,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502678081] [2023-08-31 20:03:24,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 20:03:24,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-31 20:03:24,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:03:24,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-31 20:03:24,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-31 20:03:24,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 176 [2023-08-31 20:03:24,457 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 82 transitions, 438 flow. Second operand has 12 states, 12 states have (on average 93.41666666666667) internal successors, (1121), 12 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states 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 20:03:24,457 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:03:24,457 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 176 [2023-08-31 20:03:24,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:03:24,548 INFO L130 PetriNetUnfolder]: 121/375 cut-off events. [2023-08-31 20:03:24,548 INFO L131 PetriNetUnfolder]: For 313/320 co-relation queries the response was YES. [2023-08-31 20:03:24,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 993 conditions, 375 events. 121/375 cut-off events. For 313/320 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1848 event pairs, 43 based on Foata normal form. 6/374 useless extension candidates. Maximal degree in co-relation 933. Up to 154 conditions per place. [2023-08-31 20:03:24,551 INFO L137 encePairwiseOnDemand]: 173/176 looper letters, 26 selfloop transitions, 11 changer transitions 0/88 dead transitions. [2023-08-31 20:03:24,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 88 transitions, 548 flow [2023-08-31 20:03:24,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-31 20:03:24,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-31 20:03:24,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1136 transitions. [2023-08-31 20:03:24,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5378787878787878 [2023-08-31 20:03:24,554 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1136 transitions. [2023-08-31 20:03:24,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1136 transitions. [2023-08-31 20:03:24,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:03:24,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1136 transitions. [2023-08-31 20:03:24,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 94.66666666666667) internal successors, (1136), 12 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states 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 20:03:24,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 176.0) internal successors, (2288), 13 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states 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 20:03:24,561 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 176.0) internal successors, (2288), 13 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states 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 20:03:24,561 INFO L175 Difference]: Start difference. First operand has 67 places, 82 transitions, 438 flow. Second operand 12 states and 1136 transitions. [2023-08-31 20:03:24,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 88 transitions, 548 flow [2023-08-31 20:03:24,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 88 transitions, 548 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 20:03:24,566 INFO L231 Difference]: Finished difference. Result has 84 places, 88 transitions, 522 flow [2023-08-31 20:03:24,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=522, PETRI_PLACES=84, PETRI_TRANSITIONS=88} [2023-08-31 20:03:24,567 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 44 predicate places. [2023-08-31 20:03:24,567 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 88 transitions, 522 flow [2023-08-31 20:03:24,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 93.41666666666667) internal successors, (1121), 12 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states 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 20:03:24,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:03:24,568 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:03:24,576 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 20:03:24,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:03:24,776 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:03:24,777 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:03:24,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1366035056, now seen corresponding path program 2 times [2023-08-31 20:03:24,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:03:24,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197676000] [2023-08-31 20:03:24,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:03:24,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:03:24,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:03:25,047 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 20:03:25,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:03:25,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197676000] [2023-08-31 20:03:25,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197676000] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:03:25,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:03:25,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 20:03:25,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608247454] [2023-08-31 20:03:25,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:03:25,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 20:03:25,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:03:25,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 20:03:25,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-31 20:03:25,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 176 [2023-08-31 20:03:25,130 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 88 transitions, 522 flow. Second operand has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states 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 20:03:25,130 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:03:25,130 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 176 [2023-08-31 20:03:25,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:03:25,327 INFO L130 PetriNetUnfolder]: 308/716 cut-off events. [2023-08-31 20:03:25,327 INFO L131 PetriNetUnfolder]: For 564/570 co-relation queries the response was YES. [2023-08-31 20:03:25,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2184 conditions, 716 events. 308/716 cut-off events. For 564/570 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3393 event pairs, 101 based on Foata normal form. 0/699 useless extension candidates. Maximal degree in co-relation 2099. Up to 551 conditions per place. [2023-08-31 20:03:25,333 INFO L137 encePairwiseOnDemand]: 161/176 looper letters, 91 selfloop transitions, 53 changer transitions 8/156 dead transitions. [2023-08-31 20:03:25,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 156 transitions, 1114 flow [2023-08-31 20:03:25,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 20:03:25,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 20:03:25,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 540 transitions. [2023-08-31 20:03:25,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5113636363636364 [2023-08-31 20:03:25,336 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 540 transitions. [2023-08-31 20:03:25,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 540 transitions. [2023-08-31 20:03:25,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:03:25,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 540 transitions. [2023-08-31 20:03:25,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 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 20:03:25,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states 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 20:03:25,339 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states 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 20:03:25,340 INFO L175 Difference]: Start difference. First operand has 84 places, 88 transitions, 522 flow. Second operand 6 states and 540 transitions. [2023-08-31 20:03:25,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 156 transitions, 1114 flow [2023-08-31 20:03:25,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 156 transitions, 1066 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-31 20:03:25,347 INFO L231 Difference]: Finished difference. Result has 89 places, 135 transitions, 956 flow [2023-08-31 20:03:25,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=956, PETRI_PLACES=89, PETRI_TRANSITIONS=135} [2023-08-31 20:03:25,348 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 49 predicate places. [2023-08-31 20:03:25,348 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 135 transitions, 956 flow [2023-08-31 20:03:25,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states 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 20:03:25,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:03:25,349 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:03:25,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 20:03:25,349 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:03:25,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:03:25,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1630893388, now seen corresponding path program 1 times [2023-08-31 20:03:25,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:03:25,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256674587] [2023-08-31 20:03:25,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:03:25,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:03:25,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:03:25,682 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 20:03:25,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:03:25,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256674587] [2023-08-31 20:03:25,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256674587] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:03:25,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:03:25,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 20:03:25,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987308513] [2023-08-31 20:03:25,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:03:25,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 20:03:25,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:03:25,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 20:03:25,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-31 20:03:25,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 176 [2023-08-31 20:03:25,785 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 135 transitions, 956 flow. Second operand has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 0 states have call successors, (0), 0 states 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 20:03:25,785 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:03:25,785 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 176 [2023-08-31 20:03:25,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:03:26,012 INFO L130 PetriNetUnfolder]: 372/858 cut-off events. [2023-08-31 20:03:26,012 INFO L131 PetriNetUnfolder]: For 1202/1213 co-relation queries the response was YES. [2023-08-31 20:03:26,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3146 conditions, 858 events. 372/858 cut-off events. For 1202/1213 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 4318 event pairs, 83 based on Foata normal form. 0/833 useless extension candidates. Maximal degree in co-relation 3081. Up to 634 conditions per place. [2023-08-31 20:03:26,020 INFO L137 encePairwiseOnDemand]: 161/176 looper letters, 124 selfloop transitions, 61 changer transitions 22/213 dead transitions. [2023-08-31 20:03:26,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 213 transitions, 1792 flow [2023-08-31 20:03:26,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 20:03:26,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 20:03:26,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 527 transitions. [2023-08-31 20:03:26,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4990530303030303 [2023-08-31 20:03:26,022 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 527 transitions. [2023-08-31 20:03:26,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 527 transitions. [2023-08-31 20:03:26,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:03:26,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 527 transitions. [2023-08-31 20:03:26,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 87.83333333333333) internal successors, (527), 6 states have internal predecessors, (527), 0 states have call successors, (0), 0 states 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 20:03:26,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states 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 20:03:26,026 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states 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 20:03:26,026 INFO L175 Difference]: Start difference. First operand has 89 places, 135 transitions, 956 flow. Second operand 6 states and 527 transitions. [2023-08-31 20:03:26,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 213 transitions, 1792 flow [2023-08-31 20:03:26,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 213 transitions, 1728 flow, removed 32 selfloop flow, removed 0 redundant places. [2023-08-31 20:03:26,039 INFO L231 Difference]: Finished difference. Result has 99 places, 179 transitions, 1448 flow [2023-08-31 20:03:26,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=898, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1448, PETRI_PLACES=99, PETRI_TRANSITIONS=179} [2023-08-31 20:03:26,040 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 59 predicate places. [2023-08-31 20:03:26,040 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 179 transitions, 1448 flow [2023-08-31 20:03:26,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 0 states have call successors, (0), 0 states 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 20:03:26,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:03:26,040 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] [2023-08-31 20:03:26,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 20:03:26,041 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:03:26,041 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:03:26,041 INFO L85 PathProgramCache]: Analyzing trace with hash 827926639, now seen corresponding path program 1 times [2023-08-31 20:03:26,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:03:26,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928680555] [2023-08-31 20:03:26,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:03:26,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:03:26,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:03:27,675 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 20:03:27,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:03:27,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928680555] [2023-08-31 20:03:27,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928680555] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:03:27,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:03:27,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 20:03:27,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591436267] [2023-08-31 20:03:27,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:03:27,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 20:03:27,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:03:27,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 20:03:27,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-08-31 20:03:27,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 176 [2023-08-31 20:03:27,987 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 179 transitions, 1448 flow. Second operand has 9 states, 9 states have (on average 74.66666666666667) internal successors, (672), 9 states have internal predecessors, (672), 0 states have call successors, (0), 0 states 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 20:03:27,987 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:03:27,987 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 176 [2023-08-31 20:03:27,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:03:28,495 INFO L130 PetriNetUnfolder]: 629/1521 cut-off events. [2023-08-31 20:03:28,496 INFO L131 PetriNetUnfolder]: For 3664/3705 co-relation queries the response was YES. [2023-08-31 20:03:28,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6514 conditions, 1521 events. 629/1521 cut-off events. For 3664/3705 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9909 event pairs, 47 based on Foata normal form. 14/1531 useless extension candidates. Maximal degree in co-relation 6444. Up to 474 conditions per place. [2023-08-31 20:03:28,542 INFO L137 encePairwiseOnDemand]: 161/176 looper letters, 273 selfloop transitions, 64 changer transitions 36/405 dead transitions. [2023-08-31 20:03:28,542 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 405 transitions, 3956 flow [2023-08-31 20:03:28,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 20:03:28,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 20:03:28,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 843 transitions. [2023-08-31 20:03:28,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47897727272727275 [2023-08-31 20:03:28,545 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 843 transitions. [2023-08-31 20:03:28,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 843 transitions. [2023-08-31 20:03:28,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:03:28,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 843 transitions. [2023-08-31 20:03:28,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 84.3) internal successors, (843), 10 states have internal predecessors, (843), 0 states have call successors, (0), 0 states 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 20:03:28,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 176.0) internal successors, (1936), 11 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states 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 20:03:28,553 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 176.0) internal successors, (1936), 11 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states 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 20:03:28,553 INFO L175 Difference]: Start difference. First operand has 99 places, 179 transitions, 1448 flow. Second operand 10 states and 843 transitions. [2023-08-31 20:03:28,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 405 transitions, 3956 flow [2023-08-31 20:03:28,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 405 transitions, 3838 flow, removed 59 selfloop flow, removed 0 redundant places. [2023-08-31 20:03:28,585 INFO L231 Difference]: Finished difference. Result has 116 places, 233 transitions, 2199 flow [2023-08-31 20:03:28,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1380, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2199, PETRI_PLACES=116, PETRI_TRANSITIONS=233} [2023-08-31 20:03:28,587 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 76 predicate places. [2023-08-31 20:03:28,588 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 233 transitions, 2199 flow [2023-08-31 20:03:28,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 74.66666666666667) internal successors, (672), 9 states have internal predecessors, (672), 0 states have call successors, (0), 0 states 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 20:03:28,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:03:28,590 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] [2023-08-31 20:03:28,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 20:03:28,590 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:03:28,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:03:28,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1766846819, now seen corresponding path program 2 times [2023-08-31 20:03:28,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:03:28,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039959468] [2023-08-31 20:03:28,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:03:28,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:03:28,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:03:33,878 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:03:33,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:03:33,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039959468] [2023-08-31 20:03:33,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039959468] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 20:03:33,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399273108] [2023-08-31 20:03:33,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 20:03:33,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:03:33,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:03:33,881 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 20:03:33,891 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 20:03:33,981 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-31 20:03:33,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 20:03:33,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-31 20:03:33,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 20:03:34,018 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 16 treesize of output 12 [2023-08-31 20:03:34,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-31 20:03:34,087 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 28 treesize of output 27 [2023-08-31 20:03:34,136 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 40 treesize of output 42 [2023-08-31 20:03:34,191 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 52 treesize of output 57 [2023-08-31 20:03:34,272 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-08-31 20:03:34,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 15 [2023-08-31 20:03:34,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:34,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:34,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:34,374 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 59 treesize of output 67 [2023-08-31 20:03:34,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:34,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:34,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:34,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:34,419 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 61 treesize of output 69 [2023-08-31 20:03:34,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:34,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:34,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:34,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:34,456 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 61 treesize of output 69 [2023-08-31 20:03:34,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:34,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:34,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:34,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:34,490 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 61 treesize of output 69 [2023-08-31 20:03:34,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:34,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:34,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:34,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:34,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:34,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:34,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:34,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:34,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:34,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:34,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:34,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:34,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:34,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:34,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:03:34,721 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:03:34,722 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 21 case distinctions, treesize of input 86 treesize of output 103 [2023-08-31 20:03:48,855 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 20:03:48,856 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 20:03:48,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399273108] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:03:48,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 20:03:48,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [20] total 30 [2023-08-31 20:03:48,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619023511] [2023-08-31 20:03:48,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:03:48,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 20:03:48,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:03:48,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 20:03:48,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=812, Unknown=6, NotChecked=0, Total=930 [2023-08-31 20:03:50,875 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 20:03:52,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:03:55,004 WARN L539 Checker$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 20:03:57,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:03:59,146 WARN L539 Checker$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 20:04:01,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:04:03,288 WARN L539 Checker$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 20:04:05,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:04:07,338 WARN L539 Checker$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 20:04:07,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 176 [2023-08-31 20:04:07,342 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 233 transitions, 2199 flow. Second operand has 11 states, 11 states have (on average 66.54545454545455) internal successors, (732), 11 states have internal predecessors, (732), 0 states have call successors, (0), 0 states 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 20:04:07,342 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:04:07,342 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 176 [2023-08-31 20:04:07,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:04:09,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:04:13,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:04:15,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:04:17,550 WARN L539 Checker$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 20:04:21,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:04:23,977 WARN L539 Checker$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 20:04:26,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:04:28,557 WARN L539 Checker$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 20:04:28,638 INFO L130 PetriNetUnfolder]: 775/1766 cut-off events. [2023-08-31 20:04:28,638 INFO L131 PetriNetUnfolder]: For 6602/6636 co-relation queries the response was YES. [2023-08-31 20:04:28,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8563 conditions, 1766 events. 775/1766 cut-off events. For 6602/6636 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 11283 event pairs, 94 based on Foata normal form. 14/1779 useless extension candidates. Maximal degree in co-relation 8485. Up to 1084 conditions per place. [2023-08-31 20:04:28,657 INFO L137 encePairwiseOnDemand]: 159/176 looper letters, 196 selfloop transitions, 95 changer transitions 60/369 dead transitions. [2023-08-31 20:04:28,658 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 369 transitions, 4091 flow [2023-08-31 20:04:28,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 20:04:28,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 20:04:28,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 781 transitions. [2023-08-31 20:04:28,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44375 [2023-08-31 20:04:28,661 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 781 transitions. [2023-08-31 20:04:28,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 781 transitions. [2023-08-31 20:04:28,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:04:28,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 781 transitions. [2023-08-31 20:04:28,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 78.1) internal successors, (781), 10 states have internal predecessors, (781), 0 states have call successors, (0), 0 states 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 20:04:28,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 176.0) internal successors, (1936), 11 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states 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 20:04:28,666 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 176.0) internal successors, (1936), 11 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states 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 20:04:28,666 INFO L175 Difference]: Start difference. First operand has 116 places, 233 transitions, 2199 flow. Second operand 10 states and 781 transitions. [2023-08-31 20:04:28,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 369 transitions, 4091 flow [2023-08-31 20:04:28,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 369 transitions, 4083 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-31 20:04:28,728 INFO L231 Difference]: Finished difference. Result has 130 places, 255 transitions, 2897 flow [2023-08-31 20:04:28,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=2195, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2897, PETRI_PLACES=130, PETRI_TRANSITIONS=255} [2023-08-31 20:04:28,729 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 90 predicate places. [2023-08-31 20:04:28,729 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 255 transitions, 2897 flow [2023-08-31 20:04:28,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 66.54545454545455) internal successors, (732), 11 states have internal predecessors, (732), 0 states have call successors, (0), 0 states 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 20:04:28,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:04:28,730 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] [2023-08-31 20:04:28,741 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 20:04:28,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:04:28,940 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:04:28,940 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:04:28,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1200895305, now seen corresponding path program 1 times [2023-08-31 20:04:28,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:04:28,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460104417] [2023-08-31 20:04:28,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:04:28,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:04:28,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:04:30,553 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 20:04:30,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:04:30,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460104417] [2023-08-31 20:04:30,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460104417] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:04:30,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:04:30,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 20:04:30,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760794266] [2023-08-31 20:04:30,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:04:30,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 20:04:30,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:04:30,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 20:04:30,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-08-31 20:04:31,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 176 [2023-08-31 20:04:31,006 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 255 transitions, 2897 flow. Second operand has 10 states, 10 states have (on average 73.5) internal successors, (735), 10 states have internal predecessors, (735), 0 states have call successors, (0), 0 states 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 20:04:31,006 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:04:31,006 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 176 [2023-08-31 20:04:31,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:04:31,760 INFO L130 PetriNetUnfolder]: 637/1556 cut-off events. [2023-08-31 20:04:31,760 INFO L131 PetriNetUnfolder]: For 8508/8561 co-relation queries the response was YES. [2023-08-31 20:04:31,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8268 conditions, 1556 events. 637/1556 cut-off events. For 8508/8561 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 10183 event pairs, 40 based on Foata normal form. 28/1582 useless extension candidates. Maximal degree in co-relation 8184. Up to 472 conditions per place. [2023-08-31 20:04:31,779 INFO L137 encePairwiseOnDemand]: 160/176 looper letters, 311 selfloop transitions, 74 changer transitions 52/487 dead transitions. [2023-08-31 20:04:31,780 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 487 transitions, 5673 flow [2023-08-31 20:04:31,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-31 20:04:31,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-31 20:04:31,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1360 transitions. [2023-08-31 20:04:31,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2023-08-31 20:04:31,784 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1360 transitions. [2023-08-31 20:04:31,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1360 transitions. [2023-08-31 20:04:31,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:04:31,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1360 transitions. [2023-08-31 20:04:31,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 80.0) internal successors, (1360), 17 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states 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 20:04:31,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 20:04:31,793 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states 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 20:04:31,793 INFO L175 Difference]: Start difference. First operand has 130 places, 255 transitions, 2897 flow. Second operand 17 states and 1360 transitions. [2023-08-31 20:04:31,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 487 transitions, 5673 flow [2023-08-31 20:04:31,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 487 transitions, 5593 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-08-31 20:04:31,840 INFO L231 Difference]: Finished difference. Result has 157 places, 306 transitions, 3728 flow [2023-08-31 20:04:31,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=2841, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3728, PETRI_PLACES=157, PETRI_TRANSITIONS=306} [2023-08-31 20:04:31,841 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 117 predicate places. [2023-08-31 20:04:31,841 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 306 transitions, 3728 flow [2023-08-31 20:04:31,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 73.5) internal successors, (735), 10 states have internal predecessors, (735), 0 states have call successors, (0), 0 states 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 20:04:31,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:04:31,842 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] [2023-08-31 20:04:31,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 20:04:31,842 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:04:31,842 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:04:31,842 INFO L85 PathProgramCache]: Analyzing trace with hash 870491643, now seen corresponding path program 2 times [2023-08-31 20:04:31,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:04:31,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037146126] [2023-08-31 20:04:31,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:04:31,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:04:31,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:05:07,599 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:05:07,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:05:07,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037146126] [2023-08-31 20:05:07,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037146126] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 20:05:07,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58322859] [2023-08-31 20:05:07,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 20:05:07,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:05:07,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:05:07,609 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 20:05:07,613 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 20:05:07,708 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-31 20:05:07,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 20:05:07,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 47 conjunts are in the unsatisfiable core [2023-08-31 20:05:07,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 20:05:07,741 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 20:05:07,830 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 20:05:07,883 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 21 treesize of output 20 [2023-08-31 20:05:07,950 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 30 treesize of output 32 [2023-08-31 20:05:08,024 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 39 treesize of output 44 [2023-08-31 20:05:08,106 INFO L321 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2023-08-31 20:05:08,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 13 [2023-08-31 20:05:08,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:05:08,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:05:08,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:05:08,196 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 48 treesize of output 56 [2023-08-31 20:05:08,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:05:08,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:05:08,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:05:08,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:05:08,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 58 [2023-08-31 20:05:08,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:05:08,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:05:08,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:05:08,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:05:08,268 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 58 [2023-08-31 20:05:08,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:05:08,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:05:08,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:05:08,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:05:08,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 58 [2023-08-31 20:05:08,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:05:08,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:05:08,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:05:08,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:05:08,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:05:08,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:05:08,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:05:08,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:05:08,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:05:08,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:05:08,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:05:08,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:05:08,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:05:08,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:05:08,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:05:08,515 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:05:08,515 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 21 case distinctions, treesize of input 81 treesize of output 98 [2023-08-31 20:05:16,610 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 20:05:16,611 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 20:05:16,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58322859] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:05:16,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 20:05:16,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [20] total 30 [2023-08-31 20:05:16,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724941560] [2023-08-31 20:05:16,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:05:16,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-31 20:05:16,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:05:16,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-31 20:05:16,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=786, Unknown=3, NotChecked=0, Total=930 [2023-08-31 20:05:18,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:05:20,719 WARN L539 Checker$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 20:05:22,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:05:24,757 WARN L539 Checker$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 20:05:26,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:05:28,974 WARN L539 Checker$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 20:05:30,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:05:32,995 WARN L539 Checker$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 20:05:35,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:05:37,013 WARN L539 Checker$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 20:05:39,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:05:41,146 WARN L539 Checker$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 20:05:41,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 176 [2023-08-31 20:05:41,151 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 306 transitions, 3728 flow. Second operand has 13 states, 13 states have (on average 61.23076923076923) internal successors, (796), 13 states have internal predecessors, (796), 0 states have call successors, (0), 0 states 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 20:05:41,151 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:05:41,151 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 176 [2023-08-31 20:05:41,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:05:45,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:05:47,324 WARN L539 Checker$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 20:05:49,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:05:51,342 WARN L539 Checker$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 20:05:55,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:05:57,555 WARN L539 Checker$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 20:05:59,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:06:01,858 WARN L539 Checker$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 20:06:03,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:06:06,040 WARN L539 Checker$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 20:06:06,251 INFO L130 PetriNetUnfolder]: 877/2017 cut-off events. [2023-08-31 20:06:06,251 INFO L131 PetriNetUnfolder]: For 13414/13487 co-relation queries the response was YES. [2023-08-31 20:06:06,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11468 conditions, 2017 events. 877/2017 cut-off events. For 13414/13487 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 13616 event pairs, 58 based on Foata normal form. 37/2053 useless extension candidates. Maximal degree in co-relation 11370. Up to 981 conditions per place. [2023-08-31 20:06:06,278 INFO L137 encePairwiseOnDemand]: 157/176 looper letters, 283 selfloop transitions, 151 changer transitions 35/504 dead transitions. [2023-08-31 20:06:06,279 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 504 transitions, 6746 flow [2023-08-31 20:06:06,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-31 20:06:06,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-31 20:06:06,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 875 transitions. [2023-08-31 20:06:06,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41429924242424243 [2023-08-31 20:06:06,284 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 875 transitions. [2023-08-31 20:06:06,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 875 transitions. [2023-08-31 20:06:06,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:06:06,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 875 transitions. [2023-08-31 20:06:06,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 72.91666666666667) internal successors, (875), 12 states have internal predecessors, (875), 0 states have call successors, (0), 0 states 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 20:06:06,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 176.0) internal successors, (2288), 13 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states 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 20:06:06,290 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 176.0) internal successors, (2288), 13 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states 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 20:06:06,290 INFO L175 Difference]: Start difference. First operand has 157 places, 306 transitions, 3728 flow. Second operand 12 states and 875 transitions. [2023-08-31 20:06:06,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 504 transitions, 6746 flow [2023-08-31 20:06:06,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 504 transitions, 6674 flow, removed 36 selfloop flow, removed 5 redundant places. [2023-08-31 20:06:06,371 INFO L231 Difference]: Finished difference. Result has 166 places, 373 transitions, 5264 flow [2023-08-31 20:06:06,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=3704, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5264, PETRI_PLACES=166, PETRI_TRANSITIONS=373} [2023-08-31 20:06:06,372 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 126 predicate places. [2023-08-31 20:06:06,372 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 373 transitions, 5264 flow [2023-08-31 20:06:06,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 61.23076923076923) internal successors, (796), 13 states have internal predecessors, (796), 0 states have call successors, (0), 0 states 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 20:06:06,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:06:06,373 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] [2023-08-31 20:06:06,384 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 20:06:06,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:06:06,578 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:06:06,578 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:06:06,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1290687197, now seen corresponding path program 3 times [2023-08-31 20:06:06,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:06:06,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896664515] [2023-08-31 20:06:06,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:06:06,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:06:06,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:06:10,468 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:06:10,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:06:10,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896664515] [2023-08-31 20:06:10,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896664515] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 20:06:10,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038061406] [2023-08-31 20:06:10,468 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 20:06:10,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:06:10,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:06:10,469 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 20:06:10,471 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 20:06:10,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-31 20:06:10,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 20:06:10,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 45 conjunts are in the unsatisfiable core [2023-08-31 20:06:10,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 20:06:10,576 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 16 treesize of output 12 [2023-08-31 20:06:10,606 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-08-31 20:06:10,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 15 [2023-08-31 20:06:10,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-31 20:06:10,717 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 28 treesize of output 27 [2023-08-31 20:06:10,772 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 40 treesize of output 42 [2023-08-31 20:06:10,836 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 52 treesize of output 57 [2023-08-31 20:06:10,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:06:10,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:06:10,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:06:10,907 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 59 treesize of output 67 [2023-08-31 20:06:10,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:06:10,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:06:10,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:06:10,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:06:10,942 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 61 treesize of output 69 [2023-08-31 20:06:11,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:06:11,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:06:11,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:06:11,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:06:11,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:06:11,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:06:11,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:06:11,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:06:11,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 81 [2023-08-31 20:06:11,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:06:11,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:06:11,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:06:11,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:06:11,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:06:11,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:06:11,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:06:11,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:06:11,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 81 [2023-08-31 20:06:11,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:06:11,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:06:11,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:06:11,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:06:11,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:06:11,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:06:11,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:06:11,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:06:11,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:06:11,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:06:11,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:06:11,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:06:11,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:06:11,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:06:11,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:06:11,352 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:06:11,352 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 21 case distinctions, treesize of input 86 treesize of output 103 [2023-08-31 20:06:23,448 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 20:06:23,448 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 20:06:23,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038061406] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:06:23,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 20:06:23,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [21] total 32 [2023-08-31 20:06:23,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858721170] [2023-08-31 20:06:23,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:06:23,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-31 20:06:23,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:06:23,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-31 20:06:23,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=883, Unknown=5, NotChecked=0, Total=1056 [2023-08-31 20:06:25,471 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:06:27,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:06:29,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:06:31,582 WARN L539 Checker$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 20:06:33,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:06:35,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:06:37,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:06:37,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 176 [2023-08-31 20:06:37,925 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 373 transitions, 5264 flow. Second operand has 12 states, 12 states have (on average 64.58333333333333) internal successors, (775), 12 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:06:37,925 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:06:37,925 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 176 [2023-08-31 20:06:37,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:06:42,168 WARN L539 Checker$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 20:06:44,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:06:46,201 WARN L539 Checker$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 20:06:48,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:06:52,358 WARN L539 Checker$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 20:06:56,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:06:59,252 WARN L539 Checker$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 20:06:59,436 INFO L130 PetriNetUnfolder]: 1003/2273 cut-off events. [2023-08-31 20:06:59,437 INFO L131 PetriNetUnfolder]: For 22333/22391 co-relation queries the response was YES. [2023-08-31 20:06:59,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14622 conditions, 2273 events. 1003/2273 cut-off events. For 22333/22391 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 15318 event pairs, 155 based on Foata normal form. 53/2326 useless extension candidates. Maximal degree in co-relation 14519. Up to 925 conditions per place. [2023-08-31 20:06:59,467 INFO L137 encePairwiseOnDemand]: 161/176 looper letters, 481 selfloop transitions, 96 changer transitions 32/620 dead transitions. [2023-08-31 20:06:59,467 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 620 transitions, 9184 flow [2023-08-31 20:06:59,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-31 20:06:59,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-31 20:06:59,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 916 transitions. [2023-08-31 20:06:59,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4337121212121212 [2023-08-31 20:06:59,470 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 916 transitions. [2023-08-31 20:06:59,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 916 transitions. [2023-08-31 20:06:59,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:06:59,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 916 transitions. [2023-08-31 20:06:59,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 76.33333333333333) internal successors, (916), 12 states have internal predecessors, (916), 0 states have call successors, (0), 0 states 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 20:06:59,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 176.0) internal successors, (2288), 13 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states 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 20:06:59,548 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 176.0) internal successors, (2288), 13 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states 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 20:06:59,548 INFO L175 Difference]: Start difference. First operand has 166 places, 373 transitions, 5264 flow. Second operand 12 states and 916 transitions. [2023-08-31 20:06:59,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 620 transitions, 9184 flow [2023-08-31 20:06:59,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 620 transitions, 9126 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-08-31 20:06:59,628 INFO L231 Difference]: Finished difference. Result has 181 places, 425 transitions, 6449 flow [2023-08-31 20:06:59,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=5220, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6449, PETRI_PLACES=181, PETRI_TRANSITIONS=425} [2023-08-31 20:06:59,629 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 141 predicate places. [2023-08-31 20:06:59,630 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 425 transitions, 6449 flow [2023-08-31 20:06:59,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 64.58333333333333) internal successors, (775), 12 states have internal predecessors, (775), 0 states have call successors, (0), 0 states 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 20:06:59,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:06:59,630 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] [2023-08-31 20:06:59,638 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-31 20:06:59,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-31 20:06:59,834 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:06:59,835 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:06:59,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1787307839, now seen corresponding path program 4 times [2023-08-31 20:06:59,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:06:59,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953927457] [2023-08-31 20:06:59,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:06:59,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:06:59,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:07:00,892 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 20:07:00,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:07:00,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953927457] [2023-08-31 20:07:00,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953927457] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:07:00,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:07:00,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-31 20:07:00,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191780378] [2023-08-31 20:07:00,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:07:00,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 20:07:00,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:07:00,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 20:07:00,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-08-31 20:07:01,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 176 [2023-08-31 20:07:01,233 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 425 transitions, 6449 flow. Second operand has 11 states, 11 states have (on average 71.63636363636364) internal successors, (788), 11 states have internal predecessors, (788), 0 states have call successors, (0), 0 states 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 20:07:01,233 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:07:01,233 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 176 [2023-08-31 20:07:01,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:07:02,422 INFO L130 PetriNetUnfolder]: 934/2244 cut-off events. [2023-08-31 20:07:02,422 INFO L131 PetriNetUnfolder]: For 26705/26793 co-relation queries the response was YES. [2023-08-31 20:07:02,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15182 conditions, 2244 events. 934/2244 cut-off events. For 26705/26793 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 15969 event pairs, 115 based on Foata normal form. 32/2270 useless extension candidates. Maximal degree in co-relation 15073. Up to 1336 conditions per place. [2023-08-31 20:07:02,446 INFO L137 encePairwiseOnDemand]: 161/176 looper letters, 345 selfloop transitions, 182 changer transitions 23/579 dead transitions. [2023-08-31 20:07:02,446 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 579 transitions, 9638 flow [2023-08-31 20:07:02,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-31 20:07:02,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-31 20:07:02,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 976 transitions. [2023-08-31 20:07:02,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4621212121212121 [2023-08-31 20:07:02,450 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 976 transitions. [2023-08-31 20:07:02,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 976 transitions. [2023-08-31 20:07:02,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:07:02,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 976 transitions. [2023-08-31 20:07:02,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 81.33333333333333) internal successors, (976), 12 states have internal predecessors, (976), 0 states have call successors, (0), 0 states 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 20:07:02,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 176.0) internal successors, (2288), 13 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states 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 20:07:02,455 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 176.0) internal successors, (2288), 13 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states 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 20:07:02,456 INFO L175 Difference]: Start difference. First operand has 181 places, 425 transitions, 6449 flow. Second operand 12 states and 976 transitions. [2023-08-31 20:07:02,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 579 transitions, 9638 flow [2023-08-31 20:07:02,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 579 transitions, 9504 flow, removed 48 selfloop flow, removed 2 redundant places. [2023-08-31 20:07:02,552 INFO L231 Difference]: Finished difference. Result has 198 places, 474 transitions, 8018 flow [2023-08-31 20:07:02,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=6348, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8018, PETRI_PLACES=198, PETRI_TRANSITIONS=474} [2023-08-31 20:07:02,553 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 158 predicate places. [2023-08-31 20:07:02,553 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 474 transitions, 8018 flow [2023-08-31 20:07:02,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 71.63636363636364) internal successors, (788), 11 states have internal predecessors, (788), 0 states have call successors, (0), 0 states 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 20:07:02,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:07:02,554 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] [2023-08-31 20:07:02,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-31 20:07:02,554 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:07:02,554 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:07:02,554 INFO L85 PathProgramCache]: Analyzing trace with hash -901787285, now seen corresponding path program 1 times [2023-08-31 20:07:02,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:07:02,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700048162] [2023-08-31 20:07:02,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:07:02,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:07:02,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:07:05,028 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:07:05,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:07:05,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700048162] [2023-08-31 20:07:05,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700048162] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 20:07:05,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144272769] [2023-08-31 20:07:05,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:07:05,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:07:05,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:07:05,030 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 20:07:05,031 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 20:07:05,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:07:05,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-31 20:07:05,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 20:07:05,214 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 16 treesize of output 12 [2023-08-31 20:07:05,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-31 20:07:05,287 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-08-31 20:07:05,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 15 [2023-08-31 20:07:05,370 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 28 treesize of output 27 [2023-08-31 20:07:05,423 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 40 treesize of output 42 [2023-08-31 20:07:05,484 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 52 treesize of output 57 [2023-08-31 20:07:05,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:07:05,564 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:07:05,565 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 6 case distinctions, treesize of input 65 treesize of output 73 [2023-08-31 20:07:05,612 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-31 20:07:05,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 20:07:06,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 47 [2023-08-31 20:07:06,621 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 20:07:06,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144272769] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 20:07:06,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 20:07:06,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [19, 12] total 37 [2023-08-31 20:07:06,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064124863] [2023-08-31 20:07:06,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:07:06,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 20:07:06,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:07:06,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 20:07:06,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1259, Unknown=0, NotChecked=0, Total=1406 [2023-08-31 20:07:08,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 176 [2023-08-31 20:07:08,764 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 474 transitions, 8018 flow. Second operand has 9 states, 9 states have (on average 70.11111111111111) internal successors, (631), 9 states have internal predecessors, (631), 0 states have call successors, (0), 0 states 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 20:07:08,764 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:07:08,764 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 176 [2023-08-31 20:07:08,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:07:11,693 INFO L130 PetriNetUnfolder]: 998/2376 cut-off events. [2023-08-31 20:07:11,694 INFO L131 PetriNetUnfolder]: For 34008/34033 co-relation queries the response was YES. [2023-08-31 20:07:11,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17091 conditions, 2376 events. 998/2376 cut-off events. For 34008/34033 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 16767 event pairs, 160 based on Foata normal form. 4/2377 useless extension candidates. Maximal degree in co-relation 16974. Up to 1436 conditions per place. [2023-08-31 20:07:11,721 INFO L137 encePairwiseOnDemand]: 158/176 looper letters, 297 selfloop transitions, 218 changer transitions 53/590 dead transitions. [2023-08-31 20:07:11,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 590 transitions, 10553 flow [2023-08-31 20:07:11,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 20:07:11,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 20:07:11,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 786 transitions. [2023-08-31 20:07:11,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4465909090909091 [2023-08-31 20:07:11,723 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 786 transitions. [2023-08-31 20:07:11,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 786 transitions. [2023-08-31 20:07:11,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:07:11,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 786 transitions. [2023-08-31 20:07:11,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 78.6) internal successors, (786), 10 states have internal predecessors, (786), 0 states have call successors, (0), 0 states 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 20:07:11,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 176.0) internal successors, (1936), 11 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states 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 20:07:11,728 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 176.0) internal successors, (1936), 11 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states 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 20:07:11,728 INFO L175 Difference]: Start difference. First operand has 198 places, 474 transitions, 8018 flow. Second operand 10 states and 786 transitions. [2023-08-31 20:07:11,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 590 transitions, 10553 flow [2023-08-31 20:07:11,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 590 transitions, 10442 flow, removed 25 selfloop flow, removed 3 redundant places. [2023-08-31 20:07:11,895 INFO L231 Difference]: Finished difference. Result has 210 places, 501 transitions, 8952 flow [2023-08-31 20:07:11,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=7918, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8952, PETRI_PLACES=210, PETRI_TRANSITIONS=501} [2023-08-31 20:07:11,896 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 170 predicate places. [2023-08-31 20:07:11,896 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 501 transitions, 8952 flow [2023-08-31 20:07:11,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 70.11111111111111) internal successors, (631), 9 states have internal predecessors, (631), 0 states have call successors, (0), 0 states 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 20:07:11,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:07:11,897 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] [2023-08-31 20:07:11,905 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-31 20:07:12,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:07:12,102 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:07:12,103 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:07:12,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1438170653, now seen corresponding path program 5 times [2023-08-31 20:07:12,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:07:12,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459423617] [2023-08-31 20:07:12,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:07:12,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:07:12,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:07:16,127 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:07:16,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:07:16,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459423617] [2023-08-31 20:07:16,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459423617] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 20:07:16,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775985303] [2023-08-31 20:07:16,127 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-31 20:07:16,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:07:16,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:07:16,128 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 20:07:16,130 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 20:07:16,277 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-08-31 20:07:16,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 20:07:16,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 53 conjunts are in the unsatisfiable core [2023-08-31 20:07:16,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 20:07:16,324 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 16 treesize of output 12 [2023-08-31 20:07:16,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-31 20:07:16,391 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-08-31 20:07:16,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 15 [2023-08-31 20:07:16,449 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 28 treesize of output 27 [2023-08-31 20:07:16,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:07:16,502 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 35 treesize of output 37 [2023-08-31 20:07:16,522 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 40 treesize of output 42 [2023-08-31 20:07:16,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:07:16,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:07:16,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:07:16,594 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 49 treesize of output 54 [2023-08-31 20:07:16,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:07:16,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:07:16,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:07:16,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:07:16,670 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 61 treesize of output 69 [2023-08-31 20:07:16,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:07:16,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:07:16,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:07:16,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:07:16,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:07:16,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:07:16,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:07:16,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:07:16,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 81 [2023-08-31 20:07:16,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:07:16,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:07:16,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:07:16,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:07:16,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:07:16,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:07:16,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:07:16,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:07:16,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:07:16,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:07:16,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:07:16,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:07:16,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 93 [2023-08-31 20:07:17,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:07:17,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:07:17,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:07:17,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:07:17,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:07:17,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:07:17,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:07:17,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:07:17,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:07:17,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:07:17,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:07:17,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:07:17,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:07:17,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:07:17,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:07:17,101 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:07:17,102 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 21 case distinctions, treesize of input 86 treesize of output 103 [2023-08-31 20:07:29,213 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-08-31 20:07:29,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 20:07:35,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 71 [2023-08-31 20:07:35,883 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 20:07:35,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775985303] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 20:07:35,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 20:07:35,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [21, 13] total 43 [2023-08-31 20:07:35,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154158270] [2023-08-31 20:07:35,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:07:35,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-31 20:07:35,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:07:35,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-31 20:07:35,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1633, Unknown=5, NotChecked=0, Total=1892 [2023-08-31 20:07:45,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 176 [2023-08-31 20:07:45,054 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 501 transitions, 8952 flow. Second operand has 13 states, 13 states have (on average 70.46153846153847) internal successors, (916), 13 states have internal predecessors, (916), 0 states have call successors, (0), 0 states 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 20:07:45,054 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:07:45,054 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 176 [2023-08-31 20:07:45,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:08:16,173 INFO L130 PetriNetUnfolder]: 1032/2511 cut-off events. [2023-08-31 20:08:16,174 INFO L131 PetriNetUnfolder]: For 44948/45079 co-relation queries the response was YES. [2023-08-31 20:08:16,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19176 conditions, 2511 events. 1032/2511 cut-off events. For 44948/45079 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 18595 event pairs, 130 based on Foata normal form. 69/2580 useless extension candidates. Maximal degree in co-relation 19053. Up to 1330 conditions per place. [2023-08-31 20:08:16,207 INFO L137 encePairwiseOnDemand]: 157/176 looper letters, 431 selfloop transitions, 264 changer transitions 19/732 dead transitions. [2023-08-31 20:08:16,207 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 732 transitions, 14008 flow [2023-08-31 20:08:16,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-31 20:08:16,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-31 20:08:16,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1275 transitions. [2023-08-31 20:08:16,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45276988636363635 [2023-08-31 20:08:16,211 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1275 transitions. [2023-08-31 20:08:16,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1275 transitions. [2023-08-31 20:08:16,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:08:16,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1275 transitions. [2023-08-31 20:08:16,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 79.6875) internal successors, (1275), 16 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states 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 20:08:16,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states 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 20:08:16,218 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states 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 20:08:16,219 INFO L175 Difference]: Start difference. First operand has 210 places, 501 transitions, 8952 flow. Second operand 16 states and 1275 transitions. [2023-08-31 20:08:16,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 732 transitions, 14008 flow [2023-08-31 20:08:16,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 732 transitions, 13923 flow, removed 27 selfloop flow, removed 1 redundant places. [2023-08-31 20:08:16,470 INFO L231 Difference]: Finished difference. Result has 236 places, 599 transitions, 11886 flow [2023-08-31 20:08:16,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=8876, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=11886, PETRI_PLACES=236, PETRI_TRANSITIONS=599} [2023-08-31 20:08:16,471 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 196 predicate places. [2023-08-31 20:08:16,471 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 599 transitions, 11886 flow [2023-08-31 20:08:16,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 70.46153846153847) internal successors, (916), 13 states have internal predecessors, (916), 0 states have call successors, (0), 0 states 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 20:08:16,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:08:16,485 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] [2023-08-31 20:08:16,493 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 20:08:16,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:08:16,694 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:08:16,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:08:16,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1734332913, now seen corresponding path program 3 times [2023-08-31 20:08:16,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:08:16,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966278101] [2023-08-31 20:08:16,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:08:16,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:08:16,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:08:46,711 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:08:46,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:08:46,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966278101] [2023-08-31 20:08:46,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966278101] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 20:08:46,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088064106] [2023-08-31 20:08:46,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 20:08:46,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:08:46,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:08:46,712 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 20:08:46,714 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 20:08:46,813 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-31 20:08:46,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 20:08:46,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 47 conjunts are in the unsatisfiable core [2023-08-31 20:08:46,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 20:08:46,833 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 20:08:46,896 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 20:08:46,936 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 21 treesize of output 20 [2023-08-31 20:08:46,989 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 30 treesize of output 32 [2023-08-31 20:08:47,046 INFO L321 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2023-08-31 20:08:47,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 13 [2023-08-31 20:08:47,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2023-08-31 20:08:47,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:47,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:47,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:47,211 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 48 treesize of output 56 [2023-08-31 20:08:47,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:47,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:47,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:47,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:47,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 58 [2023-08-31 20:08:47,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:47,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:47,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:47,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:47,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 58 [2023-08-31 20:08:47,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:47,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:47,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:47,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:47,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 58 [2023-08-31 20:08:47,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:47,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:47,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:47,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:47,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:47,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:47,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:47,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:47,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:47,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:47,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:47,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:47,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:47,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:47,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:08:47,492 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:08:47,492 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 21 case distinctions, treesize of input 81 treesize of output 98 [2023-08-31 20:08:55,571 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 20:08:55,571 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 20:08:55,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088064106] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:08:55,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 20:08:55,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [21] total 31 [2023-08-31 20:08:55,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962234652] [2023-08-31 20:08:55,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:08:55,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-31 20:08:55,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:08:55,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-31 20:08:55,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=835, Unknown=2, NotChecked=0, Total=992 [2023-08-31 20:08:57,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:08:59,702 WARN L539 Checker$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 20:09:01,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:09:03,803 WARN L539 Checker$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 20:09:05,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:09:07,944 WARN L539 Checker$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 20:09:09,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:09:11,967 WARN L539 Checker$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 20:09:13,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:09:16,130 WARN L539 Checker$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 20:09:18,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:09:18,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 176 [2023-08-31 20:09:18,148 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 599 transitions, 11886 flow. Second operand has 13 states, 13 states have (on average 61.23076923076923) internal successors, (796), 13 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:09:18,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:09:18,148 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 176 [2023-08-31 20:09:18,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:09:22,312 WARN L539 Checker$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 20:09:24,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:09:26,340 WARN L539 Checker$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 20:09:28,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:09:32,556 WARN L539 Checker$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 20:09:34,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:09:36,867 WARN L539 Checker$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 20:09:38,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-31 20:09:41,216 WARN L539 Checker$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 20:09:41,458 INFO L130 PetriNetUnfolder]: 1252/2878 cut-off events. [2023-08-31 20:09:41,458 INFO L131 PetriNetUnfolder]: For 64504/64661 co-relation queries the response was YES. [2023-08-31 20:09:41,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23532 conditions, 2878 events. 1252/2878 cut-off events. For 64504/64661 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 21270 event pairs, 118 based on Foata normal form. 90/2966 useless extension candidates. Maximal degree in co-relation 23396. Up to 1397 conditions per place. [2023-08-31 20:09:41,489 INFO L137 encePairwiseOnDemand]: 157/176 looper letters, 496 selfloop transitions, 260 changer transitions 25/837 dead transitions. [2023-08-31 20:09:41,489 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 837 transitions, 17395 flow [2023-08-31 20:09:41,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-31 20:09:41,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-31 20:09:41,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 874 transitions. [2023-08-31 20:09:41,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41382575757575757 [2023-08-31 20:09:41,492 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 874 transitions. [2023-08-31 20:09:41,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 874 transitions. [2023-08-31 20:09:41,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:09:41,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 874 transitions. [2023-08-31 20:09:41,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 72.83333333333333) internal successors, (874), 12 states have internal predecessors, (874), 0 states have call successors, (0), 0 states 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 20:09:41,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 176.0) internal successors, (2288), 13 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states 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 20:09:41,496 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 176.0) internal successors, (2288), 13 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states 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 20:09:41,496 INFO L175 Difference]: Start difference. First operand has 236 places, 599 transitions, 11886 flow. Second operand 12 states and 874 transitions. [2023-08-31 20:09:41,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 837 transitions, 17395 flow [2023-08-31 20:09:41,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 837 transitions, 16859 flow, removed 132 selfloop flow, removed 1 redundant places. [2023-08-31 20:09:41,728 INFO L231 Difference]: Finished difference. Result has 252 places, 676 transitions, 14077 flow [2023-08-31 20:09:41,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=11480, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14077, PETRI_PLACES=252, PETRI_TRANSITIONS=676} [2023-08-31 20:09:41,729 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 212 predicate places. [2023-08-31 20:09:41,729 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 676 transitions, 14077 flow [2023-08-31 20:09:41,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 61.23076923076923) internal successors, (796), 13 states have internal predecessors, (796), 0 states have call successors, (0), 0 states 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 20:09:41,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:09:41,730 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] [2023-08-31 20:09:41,735 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 20:09:41,930 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,SelfDestructingSolverStorable15 [2023-08-31 20:09:41,930 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:09:41,931 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:09:41,931 INFO L85 PathProgramCache]: Analyzing trace with hash 453506027, now seen corresponding path program 2 times [2023-08-31 20:09:41,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:09:41,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28000689] [2023-08-31 20:09:41,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:09:41,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:09:41,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:09:43,696 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:09:43,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:09:43,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28000689] [2023-08-31 20:09:43,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28000689] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 20:09:43,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612991470] [2023-08-31 20:09:43,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 20:09:43,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:09:43,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:09:43,701 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 20:09:43,702 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 20:09:43,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-31 20:09:43,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 20:09:43,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-31 20:09:43,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 20:09:43,808 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 16 treesize of output 12 [2023-08-31 20:09:43,832 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-08-31 20:09:43,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 15 [2023-08-31 20:09:43,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-31 20:09:43,878 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 23 treesize of output 22 [2023-08-31 20:09:43,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-08-31 20:09:43,901 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:09:43,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-08-31 20:09:43,913 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:09:43,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2023-08-31 20:09:43,921 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 20:09:43,921 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 20:09:43,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612991470] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:09:43,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 20:09:43,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [19] total 21 [2023-08-31 20:09:43,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494359518] [2023-08-31 20:09:43,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:09:43,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 20:09:43,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:09:43,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 20:09:43,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2023-08-31 20:09:44,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 176 [2023-08-31 20:09:44,092 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 676 transitions, 14077 flow. Second operand has 9 states, 9 states have (on average 70.11111111111111) internal successors, (631), 9 states have internal predecessors, (631), 0 states have call successors, (0), 0 states 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 20:09:44,092 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:09:44,092 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 176 [2023-08-31 20:09:44,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:09:45,252 INFO L130 PetriNetUnfolder]: 1197/2874 cut-off events. [2023-08-31 20:09:45,252 INFO L131 PetriNetUnfolder]: For 70905/70946 co-relation queries the response was YES. [2023-08-31 20:09:45,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24180 conditions, 2874 events. 1197/2874 cut-off events. For 70905/70946 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 21635 event pairs, 189 based on Foata normal form. 12/2875 useless extension candidates. Maximal degree in co-relation 24036. Up to 1021 conditions per place. [2023-08-31 20:09:45,286 INFO L137 encePairwiseOnDemand]: 158/176 looper letters, 444 selfloop transitions, 339 changer transitions 21/831 dead transitions. [2023-08-31 20:09:45,286 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 831 transitions, 17298 flow [2023-08-31 20:09:45,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-31 20:09:45,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-31 20:09:45,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1071 transitions. [2023-08-31 20:09:45,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46809440559440557 [2023-08-31 20:09:45,288 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1071 transitions. [2023-08-31 20:09:45,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1071 transitions. [2023-08-31 20:09:45,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:09:45,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1071 transitions. [2023-08-31 20:09:45,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 82.38461538461539) internal successors, (1071), 13 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states 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 20:09:45,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 176.0) internal successors, (2464), 14 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 20:09:45,293 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 176.0) internal successors, (2464), 14 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 20:09:45,293 INFO L175 Difference]: Start difference. First operand has 252 places, 676 transitions, 14077 flow. Second operand 13 states and 1071 transitions. [2023-08-31 20:09:45,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 831 transitions, 17298 flow [2023-08-31 20:09:45,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 831 transitions, 17183 flow, removed 31 selfloop flow, removed 3 redundant places. [2023-08-31 20:09:45,558 INFO L231 Difference]: Finished difference. Result has 265 places, 717 transitions, 15368 flow [2023-08-31 20:09:45,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=13977, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=676, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=301, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=15368, PETRI_PLACES=265, PETRI_TRANSITIONS=717} [2023-08-31 20:09:45,559 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 225 predicate places. [2023-08-31 20:09:45,559 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 717 transitions, 15368 flow [2023-08-31 20:09:45,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 70.11111111111111) internal successors, (631), 9 states have internal predecessors, (631), 0 states have call successors, (0), 0 states 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 20:09:45,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:09:45,560 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] [2023-08-31 20:09:45,568 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 20:09:45,765 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,SelfDestructingSolverStorable16 [2023-08-31 20:09:45,765 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:09:45,765 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:09:45,765 INFO L85 PathProgramCache]: Analyzing trace with hash 371753447, now seen corresponding path program 3 times [2023-08-31 20:09:45,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:09:45,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430969008] [2023-08-31 20:09:45,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:09:45,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:09:45,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:09:46,213 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 20:09:46,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:09:46,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430969008] [2023-08-31 20:09:46,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430969008] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:09:46,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:09:46,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 20:09:46,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842533337] [2023-08-31 20:09:46,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:09:46,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 20:09:46,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:09:46,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 20:09:46,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-31 20:09:46,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 176 [2023-08-31 20:09:46,464 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 717 transitions, 15368 flow. Second operand has 9 states, 9 states have (on average 70.11111111111111) internal successors, (631), 9 states have internal predecessors, (631), 0 states have call successors, (0), 0 states 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 20:09:46,464 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:09:46,464 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 176 [2023-08-31 20:09:46,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:09:47,571 INFO L130 PetriNetUnfolder]: 1192/2864 cut-off events. [2023-08-31 20:09:47,571 INFO L131 PetriNetUnfolder]: For 78905/78946 co-relation queries the response was YES. [2023-08-31 20:09:47,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25048 conditions, 2864 events. 1192/2864 cut-off events. For 78905/78946 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 21516 event pairs, 226 based on Foata normal form. 11/2867 useless extension candidates. Maximal degree in co-relation 24901. Up to 1055 conditions per place. [2023-08-31 20:09:47,607 INFO L137 encePairwiseOnDemand]: 160/176 looper letters, 592 selfloop transitions, 194 changer transitions 20/833 dead transitions. [2023-08-31 20:09:47,607 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 833 transitions, 18286 flow [2023-08-31 20:09:47,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 20:09:47,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 20:09:47,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 820 transitions. [2023-08-31 20:09:47,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4659090909090909 [2023-08-31 20:09:47,610 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 820 transitions. [2023-08-31 20:09:47,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 820 transitions. [2023-08-31 20:09:47,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:09:47,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 820 transitions. [2023-08-31 20:09:47,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 82.0) internal successors, (820), 10 states have internal predecessors, (820), 0 states have call successors, (0), 0 states 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 20:09:47,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 176.0) internal successors, (1936), 11 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states 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 20:09:47,614 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 176.0) internal successors, (1936), 11 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states 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 20:09:47,614 INFO L175 Difference]: Start difference. First operand has 265 places, 717 transitions, 15368 flow. Second operand 10 states and 820 transitions. [2023-08-31 20:09:47,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 833 transitions, 18286 flow [2023-08-31 20:09:47,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 833 transitions, 18105 flow, removed 82 selfloop flow, removed 1 redundant places. [2023-08-31 20:09:47,947 INFO L231 Difference]: Finished difference. Result has 277 places, 733 transitions, 15946 flow [2023-08-31 20:09:47,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=15231, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=717, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15946, PETRI_PLACES=277, PETRI_TRANSITIONS=733} [2023-08-31 20:09:47,948 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 237 predicate places. [2023-08-31 20:09:47,948 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 733 transitions, 15946 flow [2023-08-31 20:09:47,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 70.11111111111111) internal successors, (631), 9 states have internal predecessors, (631), 0 states have call successors, (0), 0 states 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 20:09:47,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:09:47,949 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] [2023-08-31 20:09:47,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-31 20:09:47,949 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:09:47,949 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:09:47,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1297343898, now seen corresponding path program 1 times [2023-08-31 20:09:47,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:09:47,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119398806] [2023-08-31 20:09:47,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:09:47,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:09:47,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:12:23,012 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:12:23,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:12:23,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119398806] [2023-08-31 20:12:23,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119398806] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 20:12:23,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278037855] [2023-08-31 20:12:23,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:12:23,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:12:23,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:12:23,015 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 20:12:23,015 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 20:12:23,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:12:23,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 47 conjunts are in the unsatisfiable core [2023-08-31 20:12:23,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 20:12:23,284 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 16 treesize of output 12 [2023-08-31 20:12:23,312 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-08-31 20:12:23,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 15 [2023-08-31 20:12:23,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 20:12:23,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-31 20:12:23,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2023-08-31 20:12:23,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2023-08-31 20:12:23,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:12:23,606 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:12:23,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 55 treesize of output 63 [2023-08-31 20:12:23,614 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 20:12:23,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 20:12:24,433 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 20:12:24,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278037855] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 20:12:24,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 20:12:24,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [19, 16] total 40 [2023-08-31 20:12:24,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846105996] [2023-08-31 20:12:24,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:12:24,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 20:12:24,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:12:24,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 20:12:24,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1460, Unknown=0, NotChecked=0, Total=1640 [2023-08-31 20:12:26,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 176 [2023-08-31 20:12:26,585 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 733 transitions, 15946 flow. Second operand has 9 states, 9 states have (on average 70.22222222222223) internal successors, (632), 9 states have internal predecessors, (632), 0 states have call successors, (0), 0 states 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 20:12:26,585 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:12:26,585 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 176 [2023-08-31 20:12:26,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:12:29,515 INFO L130 PetriNetUnfolder]: 1230/2922 cut-off events. [2023-08-31 20:12:29,515 INFO L131 PetriNetUnfolder]: For 84609/84668 co-relation queries the response was YES. [2023-08-31 20:12:29,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26227 conditions, 2922 events. 1230/2922 cut-off events. For 84609/84668 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 21763 event pairs, 279 based on Foata normal form. 9/2929 useless extension candidates. Maximal degree in co-relation 26076. Up to 1093 conditions per place. [2023-08-31 20:12:29,552 INFO L137 encePairwiseOnDemand]: 158/176 looper letters, 663 selfloop transitions, 183 changer transitions 39/889 dead transitions. [2023-08-31 20:12:29,552 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 889 transitions, 19922 flow [2023-08-31 20:12:29,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-31 20:12:29,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-31 20:12:29,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1176 transitions. [2023-08-31 20:12:29,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44545454545454544 [2023-08-31 20:12:29,554 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1176 transitions. [2023-08-31 20:12:29,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1176 transitions. [2023-08-31 20:12:29,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:12:29,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1176 transitions. [2023-08-31 20:12:29,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 78.4) internal successors, (1176), 15 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:12:29,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 176.0) internal successors, (2816), 16 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states 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 20:12:29,560 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 176.0) internal successors, (2816), 16 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states 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 20:12:29,560 INFO L175 Difference]: Start difference. First operand has 277 places, 733 transitions, 15946 flow. Second operand 15 states and 1176 transitions. [2023-08-31 20:12:29,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 889 transitions, 19922 flow [2023-08-31 20:12:29,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 889 transitions, 19706 flow, removed 19 selfloop flow, removed 2 redundant places. [2023-08-31 20:12:29,924 INFO L231 Difference]: Finished difference. Result has 299 places, 775 transitions, 16889 flow [2023-08-31 20:12:29,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=15749, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=733, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=564, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=16889, PETRI_PLACES=299, PETRI_TRANSITIONS=775} [2023-08-31 20:12:29,925 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 259 predicate places. [2023-08-31 20:12:29,925 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 775 transitions, 16889 flow [2023-08-31 20:12:29,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 70.22222222222223) internal successors, (632), 9 states have internal predecessors, (632), 0 states have call successors, (0), 0 states 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 20:12:29,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:12:29,925 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] [2023-08-31 20:12:29,932 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 20:12:30,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:12:30,126 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:12:30,126 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:12:30,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1960644907, now seen corresponding path program 6 times [2023-08-31 20:12:30,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:12:30,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795961500] [2023-08-31 20:12:30,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:12:30,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:12:30,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:12:30,985 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 20:12:30,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:12:30,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795961500] [2023-08-31 20:12:30,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795961500] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:12:30,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:12:30,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 20:12:30,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088045329] [2023-08-31 20:12:30,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:12:30,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 20:12:30,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:12:30,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 20:12:30,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-31 20:12:31,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 176 [2023-08-31 20:12:31,342 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 775 transitions, 16889 flow. Second operand has 10 states, 10 states have (on average 73.7) internal successors, (737), 10 states have internal predecessors, (737), 0 states have call successors, (0), 0 states 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 20:12:31,342 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:12:31,342 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 176 [2023-08-31 20:12:31,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:12:32,698 INFO L130 PetriNetUnfolder]: 1143/2788 cut-off events. [2023-08-31 20:12:32,698 INFO L131 PetriNetUnfolder]: For 87208/87343 co-relation queries the response was YES. [2023-08-31 20:12:32,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26012 conditions, 2788 events. 1143/2788 cut-off events. For 87208/87343 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 21487 event pairs, 148 based on Foata normal form. 55/2834 useless extension candidates. Maximal degree in co-relation 25852. Up to 1644 conditions per place. [2023-08-31 20:12:32,733 INFO L137 encePairwiseOnDemand]: 161/176 looper letters, 546 selfloop transitions, 298 changer transitions 19/932 dead transitions. [2023-08-31 20:12:32,733 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 932 transitions, 21571 flow [2023-08-31 20:12:32,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-31 20:12:32,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-31 20:12:32,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 992 transitions. [2023-08-31 20:12:32,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2023-08-31 20:12:32,736 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 992 transitions. [2023-08-31 20:12:32,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 992 transitions. [2023-08-31 20:12:32,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:12:32,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 992 transitions. [2023-08-31 20:12:32,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 82.66666666666667) internal successors, (992), 12 states have internal predecessors, (992), 0 states have call successors, (0), 0 states 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 20:12:32,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 176.0) internal successors, (2288), 13 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states 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 20:12:32,740 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 176.0) internal successors, (2288), 13 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states 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 20:12:32,740 INFO L175 Difference]: Start difference. First operand has 299 places, 775 transitions, 16889 flow. Second operand 12 states and 992 transitions. [2023-08-31 20:12:32,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 932 transitions, 21571 flow [2023-08-31 20:12:33,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 932 transitions, 21486 flow, removed 34 selfloop flow, removed 4 redundant places. [2023-08-31 20:12:33,110 INFO L231 Difference]: Finished difference. Result has 308 places, 828 transitions, 19548 flow [2023-08-31 20:12:33,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=16822, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=775, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=249, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=19548, PETRI_PLACES=308, PETRI_TRANSITIONS=828} [2023-08-31 20:12:33,111 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 268 predicate places. [2023-08-31 20:12:33,111 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 828 transitions, 19548 flow [2023-08-31 20:12:33,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 73.7) internal successors, (737), 10 states have internal predecessors, (737), 0 states have call successors, (0), 0 states 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 20:12:33,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:12:33,112 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] [2023-08-31 20:12:33,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-31 20:12:33,112 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:12:33,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:12:33,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1517014873, now seen corresponding path program 4 times [2023-08-31 20:12:33,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:12:33,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240416994] [2023-08-31 20:12:33,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:12:33,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:12:33,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:12:33,504 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 20:12:33,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:12:33,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240416994] [2023-08-31 20:12:33,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240416994] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:12:33,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:12:33,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 20:12:33,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934427766] [2023-08-31 20:12:33,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:12:33,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 20:12:33,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:12:33,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 20:12:33,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-08-31 20:12:33,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 176 [2023-08-31 20:12:33,837 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 828 transitions, 19548 flow. Second operand has 9 states, 9 states have (on average 70.11111111111111) internal successors, (631), 9 states have internal predecessors, (631), 0 states have call successors, (0), 0 states 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 20:12:33,837 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:12:33,837 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 176 [2023-08-31 20:12:33,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:12:35,078 INFO L130 PetriNetUnfolder]: 1209/2918 cut-off events. [2023-08-31 20:12:35,078 INFO L131 PetriNetUnfolder]: For 105438/105486 co-relation queries the response was YES. [2023-08-31 20:12:35,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28424 conditions, 2918 events. 1209/2918 cut-off events. For 105438/105486 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 22142 event pairs, 212 based on Foata normal form. 7/2920 useless extension candidates. Maximal degree in co-relation 28260. Up to 1777 conditions per place. [2023-08-31 20:12:35,118 INFO L137 encePairwiseOnDemand]: 158/176 looper letters, 500 selfloop transitions, 344 changer transitions 18/889 dead transitions. [2023-08-31 20:12:35,118 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 889 transitions, 22070 flow [2023-08-31 20:12:35,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 20:12:35,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 20:12:35,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 714 transitions. [2023-08-31 20:12:35,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45075757575757575 [2023-08-31 20:12:35,120 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 714 transitions. [2023-08-31 20:12:35,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 714 transitions. [2023-08-31 20:12:35,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:12:35,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 714 transitions. [2023-08-31 20:12:35,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 79.33333333333333) internal successors, (714), 9 states have internal predecessors, (714), 0 states have call successors, (0), 0 states 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 20:12:35,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 176.0) internal successors, (1760), 10 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states 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 20:12:35,123 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 176.0) internal successors, (1760), 10 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states 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 20:12:35,123 INFO L175 Difference]: Start difference. First operand has 308 places, 828 transitions, 19548 flow. Second operand 9 states and 714 transitions. [2023-08-31 20:12:35,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 889 transitions, 22070 flow [2023-08-31 20:12:35,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 889 transitions, 21924 flow, removed 58 selfloop flow, removed 3 redundant places. [2023-08-31 20:12:35,595 INFO L231 Difference]: Finished difference. Result has 317 places, 840 transitions, 20514 flow [2023-08-31 20:12:35,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=19417, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=828, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=333, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=20514, PETRI_PLACES=317, PETRI_TRANSITIONS=840} [2023-08-31 20:12:35,597 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 277 predicate places. [2023-08-31 20:12:35,597 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 840 transitions, 20514 flow [2023-08-31 20:12:35,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 70.11111111111111) internal successors, (631), 9 states have internal predecessors, (631), 0 states have call successors, (0), 0 states 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 20:12:35,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:12:35,597 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] [2023-08-31 20:12:35,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-31 20:12:35,598 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:12:35,598 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:12:35,598 INFO L85 PathProgramCache]: Analyzing trace with hash -2012026757, now seen corresponding path program 7 times [2023-08-31 20:12:35,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:12:35,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716948991] [2023-08-31 20:12:35,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:12:35,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:12:35,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:12:36,470 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 20:12:36,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:12:36,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716948991] [2023-08-31 20:12:36,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716948991] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:12:36,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:12:36,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 20:12:36,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442183964] [2023-08-31 20:12:36,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:12:36,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 20:12:36,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:12:36,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 20:12:36,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-08-31 20:12:36,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 176 [2023-08-31 20:12:36,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 840 transitions, 20514 flow. Second operand has 10 states, 10 states have (on average 73.7) internal successors, (737), 10 states have internal predecessors, (737), 0 states have call successors, (0), 0 states 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 20:12:36,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:12:36,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 176 [2023-08-31 20:12:36,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:12:38,090 INFO L130 PetriNetUnfolder]: 1135/2776 cut-off events. [2023-08-31 20:12:38,090 INFO L131 PetriNetUnfolder]: For 107785/107935 co-relation queries the response was YES. [2023-08-31 20:12:38,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27881 conditions, 2776 events. 1135/2776 cut-off events. For 107785/107935 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 21403 event pairs, 150 based on Foata normal form. 60/2824 useless extension candidates. Maximal degree in co-relation 27715. Up to 1531 conditions per place. [2023-08-31 20:12:38,127 INFO L137 encePairwiseOnDemand]: 161/176 looper letters, 546 selfloop transitions, 302 changer transitions 18/943 dead transitions. [2023-08-31 20:12:38,127 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 943 transitions, 23767 flow [2023-08-31 20:12:38,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-31 20:12:38,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-31 20:12:38,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 992 transitions. [2023-08-31 20:12:38,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2023-08-31 20:12:38,129 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 992 transitions. [2023-08-31 20:12:38,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 992 transitions. [2023-08-31 20:12:38,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:12:38,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 992 transitions. [2023-08-31 20:12:38,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 82.66666666666667) internal successors, (992), 12 states have internal predecessors, (992), 0 states have call successors, (0), 0 states 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 20:12:38,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 176.0) internal successors, (2288), 13 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states 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 20:12:38,133 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 176.0) internal successors, (2288), 13 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states 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 20:12:38,133 INFO L175 Difference]: Start difference. First operand has 317 places, 840 transitions, 20514 flow. Second operand 12 states and 992 transitions. [2023-08-31 20:12:38,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 943 transitions, 23767 flow [2023-08-31 20:12:38,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 943 transitions, 23499 flow, removed 26 selfloop flow, removed 2 redundant places. [2023-08-31 20:12:38,652 INFO L231 Difference]: Finished difference. Result has 329 places, 854 transitions, 21337 flow [2023-08-31 20:12:38,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=20256, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=840, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=290, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=21337, PETRI_PLACES=329, PETRI_TRANSITIONS=854} [2023-08-31 20:12:38,654 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 289 predicate places. [2023-08-31 20:12:38,654 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 854 transitions, 21337 flow [2023-08-31 20:12:38,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 73.7) internal successors, (737), 10 states have internal predecessors, (737), 0 states have call successors, (0), 0 states 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 20:12:38,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:12:38,654 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] [2023-08-31 20:12:38,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-31 20:12:38,655 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:12:38,655 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:12:38,655 INFO L85 PathProgramCache]: Analyzing trace with hash 261294519, now seen corresponding path program 4 times [2023-08-31 20:12:38,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:12:38,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802379204] [2023-08-31 20:12:38,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:12:38,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:12:38,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:12:42,461 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:12:42,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:12:42,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802379204] [2023-08-31 20:12:42,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802379204] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 20:12:42,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511664275] [2023-08-31 20:12:42,461 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-31 20:12:42,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:12:42,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:12:42,462 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 20:12:42,464 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 20:12:42,596 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-31 20:12:42,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 20:12:42,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 63 conjunts are in the unsatisfiable core [2023-08-31 20:12:42,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 20:12:42,760 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 20:12:42,840 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-08-31 20:12:42,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 15 [2023-08-31 20:12:42,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 20:12:42,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-31 20:12:42,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2023-08-31 20:12:43,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2023-08-31 20:12:43,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:12:43,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:12:43,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:12:43,171 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 50 treesize of output 58 [2023-08-31 20:12:43,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:12:43,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:12:43,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:12:43,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:12:43,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 59 [2023-08-31 20:12:43,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:12:43,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:12:43,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:12:43,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:12:43,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 59 [2023-08-31 20:12:43,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:12:43,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:12:43,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:12:43,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:12:43,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 59 [2023-08-31 20:12:43,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:12:43,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:12:43,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:12:43,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:12:43,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:12:43,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:12:43,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:12:43,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:12:43,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:12:43,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:12:43,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:12:43,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:12:43,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:12:43,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:12:43,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:12:43,542 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:12:43,542 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 21 case distinctions, treesize of input 86 treesize of output 103 [2023-08-31 20:12:55,649 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 20:12:55,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 20:12:58,916 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 20:12:58,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511664275] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 20:12:58,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 20:12:58,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [22, 19] total 51 [2023-08-31 20:12:58,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775276479] [2023-08-31 20:12:58,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:12:58,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-31 20:12:58,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:12:58,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-31 20:12:58,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=2326, Unknown=5, NotChecked=0, Total=2652 [2023-08-31 20:13:04,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 176 [2023-08-31 20:13:04,035 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 854 transitions, 21337 flow. Second operand has 13 states, 13 states have (on average 70.38461538461539) internal successors, (915), 13 states have internal predecessors, (915), 0 states have call successors, (0), 0 states 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 20:13:04,036 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:13:04,036 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 176 [2023-08-31 20:13:04,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:13:18,956 INFO L130 PetriNetUnfolder]: 1256/3035 cut-off events. [2023-08-31 20:13:18,956 INFO L131 PetriNetUnfolder]: For 123184/123270 co-relation queries the response was YES. [2023-08-31 20:13:18,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30958 conditions, 3035 events. 1256/3035 cut-off events. For 123184/123270 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 23296 event pairs, 144 based on Foata normal form. 38/3071 useless extension candidates. Maximal degree in co-relation 30789. Up to 1246 conditions per place. [2023-08-31 20:13:18,999 INFO L137 encePairwiseOnDemand]: 158/176 looper letters, 794 selfloop transitions, 249 changer transitions 17/1075 dead transitions. [2023-08-31 20:13:19,000 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 1075 transitions, 27364 flow [2023-08-31 20:13:19,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-31 20:13:19,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-31 20:13:19,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 988 transitions. [2023-08-31 20:13:19,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4678030303030303 [2023-08-31 20:13:19,002 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 988 transitions. [2023-08-31 20:13:19,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 988 transitions. [2023-08-31 20:13:19,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:13:19,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 988 transitions. [2023-08-31 20:13:19,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 82.33333333333333) internal successors, (988), 12 states have internal predecessors, (988), 0 states have call successors, (0), 0 states 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 20:13:19,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 176.0) internal successors, (2288), 13 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states 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 20:13:19,005 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 176.0) internal successors, (2288), 13 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states 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 20:13:19,005 INFO L175 Difference]: Start difference. First operand has 329 places, 854 transitions, 21337 flow. Second operand 12 states and 988 transitions. [2023-08-31 20:13:19,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 1075 transitions, 27364 flow [2023-08-31 20:13:19,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 1075 transitions, 27235 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-08-31 20:13:19,658 INFO L231 Difference]: Finished difference. Result has 346 places, 908 transitions, 23249 flow [2023-08-31 20:13:19,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=21241, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=854, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=615, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=23249, PETRI_PLACES=346, PETRI_TRANSITIONS=908} [2023-08-31 20:13:19,659 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 306 predicate places. [2023-08-31 20:13:19,659 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 908 transitions, 23249 flow [2023-08-31 20:13:19,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 70.38461538461539) internal successors, (915), 13 states have internal predecessors, (915), 0 states have call successors, (0), 0 states 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 20:13:19,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:13:19,659 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] [2023-08-31 20:13:19,664 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 20:13:19,859 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,SelfDestructingSolverStorable22 [2023-08-31 20:13:19,860 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:13:19,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:13:19,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1412033899, now seen corresponding path program 5 times [2023-08-31 20:13:19,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:13:19,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570419492] [2023-08-31 20:13:19,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:13:19,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:13:19,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:13:21,721 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:13:21,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:13:21,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570419492] [2023-08-31 20:13:21,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570419492] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 20:13:21,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938944270] [2023-08-31 20:13:21,722 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-31 20:13:21,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:13:21,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:13:21,723 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 20:13:21,724 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 20:13:21,883 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-08-31 20:13:21,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 20:13:21,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 47 conjunts are in the unsatisfiable core [2023-08-31 20:13:21,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 20:13:21,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-31 20:13:22,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-31 20:13:22,053 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 28 treesize of output 27 [2023-08-31 20:13:22,087 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 40 treesize of output 42 [2023-08-31 20:13:22,144 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-08-31 20:13:22,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 15 [2023-08-31 20:13:22,247 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 52 treesize of output 57 [2023-08-31 20:13:22,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:13:22,318 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:13:22,318 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 6 case distinctions, treesize of input 65 treesize of output 73 [2023-08-31 20:13:22,359 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 20:13:22,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 20:13:23,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 47 [2023-08-31 20:13:23,096 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 20:13:23,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938944270] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 20:13:23,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 20:13:23,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [19, 16] total 41 [2023-08-31 20:13:23,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102917537] [2023-08-31 20:13:23,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:13:23,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 20:13:23,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:13:23,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 20:13:23,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1563, Unknown=0, NotChecked=0, Total=1722 [2023-08-31 20:13:24,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 176 [2023-08-31 20:13:24,739 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 908 transitions, 23249 flow. Second operand has 9 states, 9 states have (on average 70.11111111111111) internal successors, (631), 9 states have internal predecessors, (631), 0 states have call successors, (0), 0 states 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 20:13:24,739 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:13:24,739 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 176 [2023-08-31 20:13:24,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:13:27,571 INFO L130 PetriNetUnfolder]: 1276/3069 cut-off events. [2023-08-31 20:13:27,572 INFO L131 PetriNetUnfolder]: For 133962/134041 co-relation queries the response was YES. [2023-08-31 20:13:27,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32446 conditions, 3069 events. 1276/3069 cut-off events. For 133962/134041 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 23423 event pairs, 223 based on Foata normal form. 18/3082 useless extension candidates. Maximal degree in co-relation 32269. Up to 1865 conditions per place. [2023-08-31 20:13:27,613 INFO L137 encePairwiseOnDemand]: 158/176 looper letters, 537 selfloop transitions, 375 changer transitions 20/965 dead transitions. [2023-08-31 20:13:27,613 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 965 transitions, 25805 flow [2023-08-31 20:13:27,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 20:13:27,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 20:13:27,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 721 transitions. [2023-08-31 20:13:27,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4551767676767677 [2023-08-31 20:13:27,615 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 721 transitions. [2023-08-31 20:13:27,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 721 transitions. [2023-08-31 20:13:27,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:13:27,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 721 transitions. [2023-08-31 20:13:27,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 80.11111111111111) internal successors, (721), 9 states have internal predecessors, (721), 0 states have call successors, (0), 0 states 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 20:13:27,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 176.0) internal successors, (1760), 10 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states 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 20:13:27,617 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 176.0) internal successors, (1760), 10 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states 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 20:13:27,617 INFO L175 Difference]: Start difference. First operand has 346 places, 908 transitions, 23249 flow. Second operand 9 states and 721 transitions. [2023-08-31 20:13:27,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 965 transitions, 25805 flow [2023-08-31 20:13:28,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 965 transitions, 25694 flow, removed 45 selfloop flow, removed 1 redundant places. [2023-08-31 20:13:28,143 INFO L231 Difference]: Finished difference. Result has 356 places, 913 transitions, 24130 flow [2023-08-31 20:13:28,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=23144, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=908, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=371, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=24130, PETRI_PLACES=356, PETRI_TRANSITIONS=913} [2023-08-31 20:13:28,144 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 316 predicate places. [2023-08-31 20:13:28,144 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 913 transitions, 24130 flow [2023-08-31 20:13:28,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 70.11111111111111) internal successors, (631), 9 states have internal predecessors, (631), 0 states have call successors, (0), 0 states 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 20:13:28,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:13:28,145 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] [2023-08-31 20:13:28,160 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 20:13:28,351 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,SelfDestructingSolverStorable23 [2023-08-31 20:13:28,351 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 20:13:28,352 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:13:28,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1597550675, now seen corresponding path program 5 times [2023-08-31 20:13:28,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:13:28,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142113563] [2023-08-31 20:13:28,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:13:28,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:13:28,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:13:33,020 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:13:33,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:13:33,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142113563] [2023-08-31 20:13:33,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142113563] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 20:13:33,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231710495] [2023-08-31 20:13:33,021 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-31 20:13:33,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:13:33,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:13:33,023 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 20:13:33,025 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 20:13:33,223 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-08-31 20:13:33,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 20:13:33,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 63 conjunts are in the unsatisfiable core [2023-08-31 20:13:33,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 20:13:33,389 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 20:13:33,429 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 20:13:33,474 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 21 treesize of output 20 [2023-08-31 20:13:33,531 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-08-31 20:13:33,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 15 [2023-08-31 20:13:33,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:13:33,594 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 32 treesize of output 34 [2023-08-31 20:13:33,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:13:33,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:13:33,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 35 [2023-08-31 20:13:33,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:13:33,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:13:33,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:13:33,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 47 [2023-08-31 20:13:33,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:13:33,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:13:33,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:13:33,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:13:33,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:13:33,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:13:33,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 62 [2023-08-31 20:13:33,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:13:33,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:13:33,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:13:33,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:13:33,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 59 [2023-08-31 20:13:33,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:13:33,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:13:33,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:13:33,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:13:33,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:13:33,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:13:33,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:13:33,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:13:33,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 16 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 74 [2023-08-31 20:13:34,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:13:34,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:13:34,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:13:34,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 20:13:34,094 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:13:34,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 29 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 106 treesize of output 123 [2023-08-31 20:13:46,207 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 20:13:46,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 20:14:35,289 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 20:14:35,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231710495] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 20:14:35,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 20:14:35,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [19, 19] total 48 [2023-08-31 20:14:35,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100208188] [2023-08-31 20:14:35,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:14:35,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-31 20:14:35,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:14:35,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-31 20:14:35,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=2100, Unknown=12, NotChecked=0, Total=2352 [2023-08-31 20:14:37,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:14:39,310 WARN L539 Checker$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 20:14:41,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:14:43,335 WARN L539 Checker$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 20:14:45,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:14:47,357 WARN L539 Checker$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 20:14:49,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:14:51,384 WARN L539 Checker$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 20:14:53,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:14:55,407 WARN L539 Checker$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 20:14:57,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:14:59,427 WARN L539 Checker$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 20:15:01,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:15:03,451 WARN L539 Checker$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 20:15:05,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:15:07,476 WARN L539 Checker$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 20:15:09,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:15:11,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:15:13,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:15:15,325 WARN L539 Checker$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 20:15:17,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:15:19,347 WARN L539 Checker$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 20:15:21,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:15:23,404 WARN L539 Checker$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 20:15:25,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:15:27,428 WARN L539 Checker$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 20:15:29,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:15:31,449 WARN L539 Checker$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 20:15:33,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:15:35,473 WARN L539 Checker$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 20:15:37,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:15:39,496 WARN L539 Checker$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 20:15:41,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:15:43,517 WARN L539 Checker$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 20:15:45,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:15:47,540 WARN L539 Checker$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 20:15:49,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:15:51,563 WARN L539 Checker$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 20:15:51,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 176 [2023-08-31 20:15:51,564 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 913 transitions, 24130 flow. Second operand has 13 states, 13 states have (on average 59.53846153846154) internal successors, (774), 13 states have internal predecessors, (774), 0 states have call successors, (0), 0 states 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 20:15:51,564 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:15:51,564 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 176 [2023-08-31 20:15:51,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:15:55,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:15:58,147 WARN L539 Checker$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 20:16:00,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:16:02,635 WARN L539 Checker$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 20:16:05,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:16:07,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:16:09,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:16:11,561 WARN L539 Checker$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 20:16:12,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:16:15,768 WARN L539 Checker$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 20:16:17,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:16:24,686 WARN L539 Checker$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 20:16:26,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:16:29,537 WARN L539 Checker$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 20:16:31,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:16:33,589 WARN L539 Checker$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 20:16:36,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:16:38,499 WARN L539 Checker$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 20:16:47,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 20:16:51,198 WARN L539 Checker$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 20:16:53,529 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] Killed by 15