./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 TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/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 TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 17:37:42,227 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 17:37:42,237 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 17:37:42,261 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 17:37:42,261 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 17:37:42,262 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 17:37:42,263 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 17:37:42,265 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 17:37:42,266 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 17:37:42,267 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 17:37:42,267 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 17:37:42,268 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 17:37:42,270 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 17:37:42,272 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 17:37:42,273 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 17:37:42,274 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 17:37:42,276 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 17:37:42,279 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 17:37:42,281 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 17:37:42,285 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 17:37:42,288 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 17:37:42,292 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 17:37:42,293 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 17:37:42,294 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 17:37:42,297 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 17:37:42,303 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 17:37:42,303 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 17:37:42,304 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 17:37:42,305 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 17:37:42,306 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 17:37:42,306 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 17:37:42,310 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 17:37:42,311 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 17:37:42,311 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 17:37:42,312 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 17:37:42,312 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 17:37:42,313 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 17:37:42,313 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 17:37:42,313 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 17:37:42,314 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 17:37:42,314 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 17:37:42,316 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 17:37:42,334 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 17:37:42,335 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 17:37:42,335 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 17:37:42,335 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 17:37:42,336 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 17:37:42,336 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 17:37:42,337 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 17:37:42,337 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 17:37:42,337 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 17:37:42,338 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 17:37:42,338 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 17:37:42,338 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 17:37:42,338 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 17:37:42,339 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 17:37:42,339 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 17:37:42,339 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 17:37:42,339 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 17:37:42,339 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 17:37:42,339 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 17:37:42,340 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 17:37:42,340 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 17:37:42,340 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 17:37:42,340 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 17:37:42,340 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 17:37:42,341 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 17:37:42,341 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 17:37:42,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 17:37:42,341 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 17:37:42,341 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 17:37:42,342 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 17:37:42,342 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 17:37:42,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 17:37:42,342 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 17:37:42,342 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 17:37:42,343 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 17:37:42,343 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 17:37:42,343 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 17:37:42,343 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a812aad62102b8bb20af57f89ce6dbf7fb9ee1fa63f6f8ecf164ccf61d0713cb Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-29 17:37:42,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 17:37:42,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 17:37:42,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 17:37:42,686 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 17:37:42,686 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 17:37:42,688 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/06-symbeq_08-tricky_address3.i [2023-08-29 17:37:43,840 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 17:37:44,074 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 17:37:44,074 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/06-symbeq_08-tricky_address3.i [2023-08-29 17:37:44,100 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe435c74f/a84688965aaf40ceadc850046d3d9f17/FLAGd7397a60b [2023-08-29 17:37:44,115 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe435c74f/a84688965aaf40ceadc850046d3d9f17 [2023-08-29 17:37:44,118 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 17:37:44,120 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 17:37:44,122 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 17:37:44,122 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 17:37:44,125 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 17:37:44,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 05:37:44" (1/1) ... [2023-08-29 17:37:44,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d5b17a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:37:44, skipping insertion in model container [2023-08-29 17:37:44,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 05:37:44" (1/1) ... [2023-08-29 17:37:44,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 17:37:44,183 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 17:37:44,622 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 17:37:44,639 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 17:37:44,689 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 17:37:44,754 INFO L208 MainTranslator]: Completed translation [2023-08-29 17:37:44,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:37:44 WrapperNode [2023-08-29 17:37:44,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 17:37:44,755 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 17:37:44,755 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 17:37:44,755 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 17:37:44,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:37:44" (1/1) ... [2023-08-29 17:37:44,776 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:37:44" (1/1) ... [2023-08-29 17:37:44,799 INFO L138 Inliner]: procedures = 264, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 93 [2023-08-29 17:37:44,800 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 17:37:44,800 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 17:37:44,800 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 17:37:44,801 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 17:37:44,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:37:44" (1/1) ... [2023-08-29 17:37:44,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:37:44" (1/1) ... [2023-08-29 17:37:44,812 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:37:44" (1/1) ... [2023-08-29 17:37:44,812 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:37:44" (1/1) ... [2023-08-29 17:37:44,827 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:37:44" (1/1) ... [2023-08-29 17:37:44,830 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:37:44" (1/1) ... [2023-08-29 17:37:44,837 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:37:44" (1/1) ... [2023-08-29 17:37:44,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:37:44" (1/1) ... [2023-08-29 17:37:44,845 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 17:37:44,846 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 17:37:44,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 17:37:44,847 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 17:37:44,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:37:44" (1/1) ... [2023-08-29 17:37:44,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 17:37:44,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:37:44,882 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 17:37:44,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 17:37:44,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 17:37:44,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 17:37:44,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 17:37:44,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 17:37:44,923 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 17:37:44,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 17:37:44,923 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 17:37:44,923 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 17:37:44,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 17:37:44,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 17:37:44,925 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 17:37:45,035 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 17:37:45,037 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 17:37:45,267 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 17:37:45,274 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 17:37:45,274 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-29 17:37:45,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 05:37:45 BoogieIcfgContainer [2023-08-29 17:37:45,278 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 17:37:45,280 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 17:37:45,280 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 17:37:45,282 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 17:37:45,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 05:37:44" (1/3) ... [2023-08-29 17:37:45,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78dac9ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 05:37:45, skipping insertion in model container [2023-08-29 17:37:45,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:37:44" (2/3) ... [2023-08-29 17:37:45,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78dac9ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 05:37:45, skipping insertion in model container [2023-08-29 17:37:45,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 05:37:45" (3/3) ... [2023-08-29 17:37:45,301 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_08-tricky_address3.i [2023-08-29 17:37:45,308 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 17:37:45,316 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 17:37:45,317 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-29 17:37:45,317 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 17:37:45,378 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 17:37:45,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 101 transitions, 207 flow [2023-08-29 17:37:45,450 INFO L130 PetriNetUnfolder]: 4/100 cut-off events. [2023-08-29 17:37:45,451 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 17:37:45,455 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. [2023-08-29 17:37:45,455 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 101 transitions, 207 flow [2023-08-29 17:37:45,462 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 100 transitions, 203 flow [2023-08-29 17:37:45,465 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 17:37:45,473 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 100 places, 100 transitions, 203 flow [2023-08-29 17:37:45,475 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 100 places, 100 transitions, 203 flow [2023-08-29 17:37:45,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 100 transitions, 203 flow [2023-08-29 17:37:45,500 INFO L130 PetriNetUnfolder]: 4/100 cut-off events. [2023-08-29 17:37:45,500 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 17:37:45,501 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. [2023-08-29 17:37:45,502 INFO L119 LiptonReduction]: Number of co-enabled transitions 2262 [2023-08-29 17:37:47,122 INFO L134 LiptonReduction]: Checked pairs total: 9365 [2023-08-29 17:37:47,122 INFO L136 LiptonReduction]: Total number of compositions: 75 [2023-08-29 17:37:47,136 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 17:37:47,141 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;@5bf3ce2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 17:37:47,141 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-29 17:37:47,146 INFO L130 PetriNetUnfolder]: 2/18 cut-off events. [2023-08-29 17:37:47,146 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 17:37:47,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:37:47,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:37:47,147 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)] === [2023-08-29 17:37:47,151 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:37:47,152 INFO L85 PathProgramCache]: Analyzing trace with hash -628209357, now seen corresponding path program 1 times [2023-08-29 17:37:47,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:37:47,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813076883] [2023-08-29 17:37:47,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:37:47,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:37:47,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:37:47,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 17:37:47,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:37:47,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813076883] [2023-08-29 17:37:47,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813076883] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:37:47,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 17:37:47,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 17:37:47,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646666877] [2023-08-29 17:37:47,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:37:47,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 17:37:47,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:37:47,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 17:37:47,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 17:37:47,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 176 [2023-08-29 17:37:47,530 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) [2023-08-29 17:37:47,530 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:37:47,530 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 176 [2023-08-29 17:37:47,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:37:47,586 INFO L130 PetriNetUnfolder]: 37/165 cut-off events. [2023-08-29 17:37:47,587 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 17:37:47,588 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. [2023-08-29 17:37:47,589 INFO L137 encePairwiseOnDemand]: 172/176 looper letters, 15 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2023-08-29 17:37:47,589 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 37 transitions, 111 flow [2023-08-29 17:37:47,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 17:37:47,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 17:37:47,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 298 transitions. [2023-08-29 17:37:47,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5643939393939394 [2023-08-29 17:37:47,610 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 298 transitions. [2023-08-29 17:37:47,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 298 transitions. [2023-08-29 17:37:47,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:37:47,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 298 transitions. [2023-08-29 17:37:47,623 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) [2023-08-29 17:37:47,628 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) [2023-08-29 17:37:47,629 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) [2023-08-29 17:37:47,631 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 79 flow. Second operand 3 states and 298 transitions. [2023-08-29 17:37:47,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 37 transitions, 111 flow [2023-08-29 17:37:47,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 37 transitions, 110 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 17:37:47,636 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 86 flow [2023-08-29 17:37:47,638 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} [2023-08-29 17:37:47,641 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2023-08-29 17:37:47,642 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 86 flow [2023-08-29 17:37:47,642 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) [2023-08-29 17:37:47,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:37:47,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:37:47,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 17:37:47,643 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)] === [2023-08-29 17:37:47,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:37:47,645 INFO L85 PathProgramCache]: Analyzing trace with hash -369379357, now seen corresponding path program 1 times [2023-08-29 17:37:47,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:37:47,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955252734] [2023-08-29 17:37:47,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:37:47,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:37:47,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:37:47,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 17:37:47,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:37:47,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955252734] [2023-08-29 17:37:47,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955252734] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:37:47,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943188129] [2023-08-29 17:37:47,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:37:47,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:37:47,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:37:47,753 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 17:37:47,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-29 17:37:47,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:37:47,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 17:37:47,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:37:47,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 17:37:47,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 17:37:47,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 17:37:47,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943188129] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 17:37:47,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 17:37:47,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-29 17:37:47,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493434305] [2023-08-29 17:37:47,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 17:37:47,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 17:37:47,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:37:47,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 17:37:47,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 17:37:47,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 176 [2023-08-29 17:37:47,969 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) [2023-08-29 17:37:47,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:37:47,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 176 [2023-08-29 17:37:47,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:37:48,060 INFO L130 PetriNetUnfolder]: 37/168 cut-off events. [2023-08-29 17:37:48,061 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 17:37:48,062 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. [2023-08-29 17:37:48,063 INFO L137 encePairwiseOnDemand]: 173/176 looper letters, 15 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2023-08-29 17:37:48,063 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 40 transitions, 138 flow [2023-08-29 17:37:48,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 17:37:48,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 17:37:48,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 575 transitions. [2023-08-29 17:37:48,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5445075757575758 [2023-08-29 17:37:48,065 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 575 transitions. [2023-08-29 17:37:48,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 575 transitions. [2023-08-29 17:37:48,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:37:48,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 575 transitions. [2023-08-29 17:37:48,068 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) [2023-08-29 17:37:48,070 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) [2023-08-29 17:37:48,071 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) [2023-08-29 17:37:48,071 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 86 flow. Second operand 6 states and 575 transitions. [2023-08-29 17:37:48,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 40 transitions, 138 flow [2023-08-29 17:37:48,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 40 transitions, 134 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-29 17:37:48,073 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 118 flow [2023-08-29 17:37:48,073 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} [2023-08-29 17:37:48,074 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 8 predicate places. [2023-08-29 17:37:48,074 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 118 flow [2023-08-29 17:37:48,074 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) [2023-08-29 17:37:48,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:37:48,075 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:37:48,080 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-29 17:37:48,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:37:48,278 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)] === [2023-08-29 17:37:48,279 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:37:48,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1157557643, now seen corresponding path program 2 times [2023-08-29 17:37:48,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:37:48,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243208201] [2023-08-29 17:37:48,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:37:48,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:37:48,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:37:48,673 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-29 17:37:48,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:37:48,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243208201] [2023-08-29 17:37:48,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243208201] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:37:48,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 17:37:48,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 17:37:48,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641665174] [2023-08-29 17:37:48,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:37:48,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 17:37:48,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:37:48,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 17:37:48,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 17:37:48,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 176 [2023-08-29 17:37:48,830 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) [2023-08-29 17:37:48,830 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:37:48,830 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 176 [2023-08-29 17:37:48,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:37:48,977 INFO L130 PetriNetUnfolder]: 162/398 cut-off events. [2023-08-29 17:37:48,977 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 17:37:48,979 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. [2023-08-29 17:37:48,981 INFO L137 encePairwiseOnDemand]: 165/176 looper letters, 52 selfloop transitions, 22 changer transitions 0/82 dead transitions. [2023-08-29 17:37:48,981 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 82 transitions, 350 flow [2023-08-29 17:37:48,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 17:37:48,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 17:37:48,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 557 transitions. [2023-08-29 17:37:48,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5274621212121212 [2023-08-29 17:37:48,983 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 557 transitions. [2023-08-29 17:37:48,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 557 transitions. [2023-08-29 17:37:48,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:37:48,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 557 transitions. [2023-08-29 17:37:48,985 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) [2023-08-29 17:37:48,986 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) [2023-08-29 17:37:48,987 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) [2023-08-29 17:37:48,987 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 118 flow. Second operand 6 states and 557 transitions. [2023-08-29 17:37:48,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 82 transitions, 350 flow [2023-08-29 17:37:48,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 82 transitions, 336 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-29 17:37:48,990 INFO L231 Difference]: Finished difference. Result has 57 places, 61 transitions, 254 flow [2023-08-29 17:37:48,990 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} [2023-08-29 17:37:48,991 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 17 predicate places. [2023-08-29 17:37:48,991 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 61 transitions, 254 flow [2023-08-29 17:37:48,991 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) [2023-08-29 17:37:48,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:37:48,991 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:37:48,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 17:37:48,992 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)] === [2023-08-29 17:37:48,992 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:37:48,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1092228275, now seen corresponding path program 1 times [2023-08-29 17:37:48,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:37:48,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524323625] [2023-08-29 17:37:48,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:37:48,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:37:49,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:37:49,193 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-29 17:37:49,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:37:49,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524323625] [2023-08-29 17:37:49,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524323625] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:37:49,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 17:37:49,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 17:37:49,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24368173] [2023-08-29 17:37:49,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:37:49,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 17:37:49,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:37:49,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 17:37:49,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 17:37:49,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 176 [2023-08-29 17:37:49,326 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) [2023-08-29 17:37:49,326 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:37:49,326 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 176 [2023-08-29 17:37:49,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:37:49,479 INFO L130 PetriNetUnfolder]: 190/476 cut-off events. [2023-08-29 17:37:49,479 INFO L131 PetriNetUnfolder]: For 143/146 co-relation queries the response was YES. [2023-08-29 17:37:49,481 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. [2023-08-29 17:37:49,483 INFO L137 encePairwiseOnDemand]: 165/176 looper letters, 63 selfloop transitions, 26 changer transitions 0/102 dead transitions. [2023-08-29 17:37:49,483 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 102 transitions, 532 flow [2023-08-29 17:37:49,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 17:37:49,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 17:37:49,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 543 transitions. [2023-08-29 17:37:49,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5142045454545454 [2023-08-29 17:37:49,485 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 543 transitions. [2023-08-29 17:37:49,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 543 transitions. [2023-08-29 17:37:49,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:37:49,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 543 transitions. [2023-08-29 17:37:49,487 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) [2023-08-29 17:37:49,489 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) [2023-08-29 17:37:49,489 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) [2023-08-29 17:37:49,490 INFO L175 Difference]: Start difference. First operand has 57 places, 61 transitions, 254 flow. Second operand 6 states and 543 transitions. [2023-08-29 17:37:49,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 102 transitions, 532 flow [2023-08-29 17:37:49,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 102 transitions, 532 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 17:37:49,494 INFO L231 Difference]: Finished difference. Result has 67 places, 82 transitions, 438 flow [2023-08-29 17:37:49,495 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} [2023-08-29 17:37:49,495 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 27 predicate places. [2023-08-29 17:37:49,495 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 82 transitions, 438 flow [2023-08-29 17:37:49,496 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) [2023-08-29 17:37:49,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:37:49,496 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:37:49,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 17:37:49,496 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)] === [2023-08-29 17:37:49,497 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:37:49,497 INFO L85 PathProgramCache]: Analyzing trace with hash 547459376, now seen corresponding path program 1 times [2023-08-29 17:37:49,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:37:49,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085215805] [2023-08-29 17:37:49,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:37:49,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:37:49,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:37:49,565 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 17:37:49,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:37:49,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085215805] [2023-08-29 17:37:49,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085215805] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:37:49,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435578836] [2023-08-29 17:37:49,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:37:49,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:37:49,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:37:49,567 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 17:37:49,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-29 17:37:49,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:37:49,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 17:37:49,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:37:49,674 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 17:37:49,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 17:37:49,732 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 17:37:49,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435578836] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 17:37:49,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 17:37:49,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-08-29 17:37:49,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726747439] [2023-08-29 17:37:49,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 17:37:49,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-29 17:37:49,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:37:49,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-29 17:37:49,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-29 17:37:49,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 176 [2023-08-29 17:37:49,762 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) [2023-08-29 17:37:49,762 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:37:49,762 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 176 [2023-08-29 17:37:49,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:37:49,846 INFO L130 PetriNetUnfolder]: 121/375 cut-off events. [2023-08-29 17:37:49,846 INFO L131 PetriNetUnfolder]: For 313/320 co-relation queries the response was YES. [2023-08-29 17:37:49,848 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. [2023-08-29 17:37:49,849 INFO L137 encePairwiseOnDemand]: 173/176 looper letters, 26 selfloop transitions, 11 changer transitions 0/88 dead transitions. [2023-08-29 17:37:49,849 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 88 transitions, 548 flow [2023-08-29 17:37:49,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 17:37:49,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 17:37:49,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1136 transitions. [2023-08-29 17:37:49,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5378787878787878 [2023-08-29 17:37:49,853 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1136 transitions. [2023-08-29 17:37:49,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1136 transitions. [2023-08-29 17:37:49,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:37:49,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1136 transitions. [2023-08-29 17:37:49,856 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) [2023-08-29 17:37:49,859 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) [2023-08-29 17:37:49,859 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) [2023-08-29 17:37:49,859 INFO L175 Difference]: Start difference. First operand has 67 places, 82 transitions, 438 flow. Second operand 12 states and 1136 transitions. [2023-08-29 17:37:49,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 88 transitions, 548 flow [2023-08-29 17:37:49,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 88 transitions, 548 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 17:37:49,865 INFO L231 Difference]: Finished difference. Result has 84 places, 88 transitions, 522 flow [2023-08-29 17:37:49,865 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} [2023-08-29 17:37:49,866 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 44 predicate places. [2023-08-29 17:37:49,866 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 88 transitions, 522 flow [2023-08-29 17:37:49,866 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) [2023-08-29 17:37:49,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:37:49,867 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:37:49,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-29 17:37:50,073 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 [2023-08-29 17:37:50,073 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)] === [2023-08-29 17:37:50,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:37:50,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1366035056, now seen corresponding path program 2 times [2023-08-29 17:37:50,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:37:50,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740041271] [2023-08-29 17:37:50,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:37:50,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:37:50,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:37:50,403 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:37:50,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:37:50,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740041271] [2023-08-29 17:37:50,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740041271] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:37:50,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 17:37:50,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 17:37:50,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617851156] [2023-08-29 17:37:50,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:37:50,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 17:37:50,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:37:50,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 17:37:50,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 17:37:50,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 176 [2023-08-29 17:37:50,502 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) [2023-08-29 17:37:50,502 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:37:50,502 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 176 [2023-08-29 17:37:50,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:37:50,695 INFO L130 PetriNetUnfolder]: 308/716 cut-off events. [2023-08-29 17:37:50,695 INFO L131 PetriNetUnfolder]: For 564/570 co-relation queries the response was YES. [2023-08-29 17:37:50,697 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. [2023-08-29 17:37:50,701 INFO L137 encePairwiseOnDemand]: 161/176 looper letters, 91 selfloop transitions, 53 changer transitions 8/156 dead transitions. [2023-08-29 17:37:50,701 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 156 transitions, 1114 flow [2023-08-29 17:37:50,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 17:37:50,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 17:37:50,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 540 transitions. [2023-08-29 17:37:50,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5113636363636364 [2023-08-29 17:37:50,703 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 540 transitions. [2023-08-29 17:37:50,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 540 transitions. [2023-08-29 17:37:50,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:37:50,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 540 transitions. [2023-08-29 17:37:50,705 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) [2023-08-29 17:37:50,707 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) [2023-08-29 17:37:50,707 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) [2023-08-29 17:37:50,707 INFO L175 Difference]: Start difference. First operand has 84 places, 88 transitions, 522 flow. Second operand 6 states and 540 transitions. [2023-08-29 17:37:50,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 156 transitions, 1114 flow [2023-08-29 17:37:50,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 156 transitions, 1066 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-29 17:37:50,714 INFO L231 Difference]: Finished difference. Result has 89 places, 135 transitions, 956 flow [2023-08-29 17:37:50,715 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} [2023-08-29 17:37:50,715 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 49 predicate places. [2023-08-29 17:37:50,716 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 135 transitions, 956 flow [2023-08-29 17:37:50,716 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) [2023-08-29 17:37:50,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:37:50,716 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:37:50,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 17:37:50,717 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)] === [2023-08-29 17:37:50,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:37:50,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1630893388, now seen corresponding path program 1 times [2023-08-29 17:37:50,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:37:50,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299477144] [2023-08-29 17:37:50,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:37:50,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:37:50,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:37:51,019 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:37:51,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:37:51,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299477144] [2023-08-29 17:37:51,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299477144] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:37:51,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 17:37:51,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 17:37:51,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898912683] [2023-08-29 17:37:51,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:37:51,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 17:37:51,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:37:51,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 17:37:51,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 17:37:51,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 176 [2023-08-29 17:37:51,139 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) [2023-08-29 17:37:51,139 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:37:51,142 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 176 [2023-08-29 17:37:51,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:37:51,408 INFO L130 PetriNetUnfolder]: 372/858 cut-off events. [2023-08-29 17:37:51,408 INFO L131 PetriNetUnfolder]: For 1202/1213 co-relation queries the response was YES. [2023-08-29 17:37:51,411 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. [2023-08-29 17:37:51,414 INFO L137 encePairwiseOnDemand]: 161/176 looper letters, 124 selfloop transitions, 61 changer transitions 22/213 dead transitions. [2023-08-29 17:37:51,415 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 213 transitions, 1792 flow [2023-08-29 17:37:51,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 17:37:51,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 17:37:51,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 527 transitions. [2023-08-29 17:37:51,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4990530303030303 [2023-08-29 17:37:51,417 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 527 transitions. [2023-08-29 17:37:51,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 527 transitions. [2023-08-29 17:37:51,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:37:51,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 527 transitions. [2023-08-29 17:37:51,419 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) [2023-08-29 17:37:51,421 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) [2023-08-29 17:37:51,421 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) [2023-08-29 17:37:51,421 INFO L175 Difference]: Start difference. First operand has 89 places, 135 transitions, 956 flow. Second operand 6 states and 527 transitions. [2023-08-29 17:37:51,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 213 transitions, 1792 flow [2023-08-29 17:37:51,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 213 transitions, 1728 flow, removed 32 selfloop flow, removed 0 redundant places. [2023-08-29 17:37:51,433 INFO L231 Difference]: Finished difference. Result has 99 places, 179 transitions, 1448 flow [2023-08-29 17:37:51,434 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} [2023-08-29 17:37:51,435 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 59 predicate places. [2023-08-29 17:37:51,435 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 179 transitions, 1448 flow [2023-08-29 17:37:51,435 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) [2023-08-29 17:37:51,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:37:51,435 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] [2023-08-29 17:37:51,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 17:37:51,436 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)] === [2023-08-29 17:37:51,436 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:37:51,436 INFO L85 PathProgramCache]: Analyzing trace with hash 827926639, now seen corresponding path program 1 times [2023-08-29 17:37:51,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:37:51,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736289762] [2023-08-29 17:37:51,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:37:51,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:37:51,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:37:53,268 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:37:53,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:37:53,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736289762] [2023-08-29 17:37:53,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736289762] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:37:53,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 17:37:53,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-29 17:37:53,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032141539] [2023-08-29 17:37:53,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:37:53,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 17:37:53,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:37:53,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 17:37:53,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-08-29 17:37:53,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 176 [2023-08-29 17:37:53,555 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) [2023-08-29 17:37:53,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:37:53,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 176 [2023-08-29 17:37:53,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:37:54,046 INFO L130 PetriNetUnfolder]: 629/1521 cut-off events. [2023-08-29 17:37:54,047 INFO L131 PetriNetUnfolder]: For 3664/3705 co-relation queries the response was YES. [2023-08-29 17:37:54,054 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. [2023-08-29 17:37:54,061 INFO L137 encePairwiseOnDemand]: 161/176 looper letters, 273 selfloop transitions, 64 changer transitions 36/405 dead transitions. [2023-08-29 17:37:54,061 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 405 transitions, 3956 flow [2023-08-29 17:37:54,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-29 17:37:54,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-29 17:37:54,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 843 transitions. [2023-08-29 17:37:54,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47897727272727275 [2023-08-29 17:37:54,064 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 843 transitions. [2023-08-29 17:37:54,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 843 transitions. [2023-08-29 17:37:54,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:37:54,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 843 transitions. [2023-08-29 17:37:54,067 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) [2023-08-29 17:37:54,069 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) [2023-08-29 17:37:54,069 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) [2023-08-29 17:37:54,069 INFO L175 Difference]: Start difference. First operand has 99 places, 179 transitions, 1448 flow. Second operand 10 states and 843 transitions. [2023-08-29 17:37:54,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 405 transitions, 3956 flow [2023-08-29 17:37:54,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 405 transitions, 3838 flow, removed 59 selfloop flow, removed 0 redundant places. [2023-08-29 17:37:54,098 INFO L231 Difference]: Finished difference. Result has 116 places, 233 transitions, 2199 flow [2023-08-29 17:37:54,098 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} [2023-08-29 17:37:54,099 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 76 predicate places. [2023-08-29 17:37:54,099 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 233 transitions, 2199 flow [2023-08-29 17:37:54,100 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) [2023-08-29 17:37:54,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:37:54,100 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] [2023-08-29 17:37:54,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 17:37:54,100 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)] === [2023-08-29 17:37:54,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:37:54,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1766846819, now seen corresponding path program 2 times [2023-08-29 17:37:54,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:37:54,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474570675] [2023-08-29 17:37:54,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:37:54,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:37:54,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:37:59,347 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 17:37:59,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:37:59,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474570675] [2023-08-29 17:37:59,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474570675] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:37:59,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751742974] [2023-08-29 17:37:59,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 17:37:59,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:37:59,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:37:59,353 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 17:37:59,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-29 17:37:59,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 17:37:59,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 17:37:59,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-29 17:37:59,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:37:59,488 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 [2023-08-29 17:37:59,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-29 17:37:59,560 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 [2023-08-29 17:37:59,611 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 [2023-08-29 17:37:59,673 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 [2023-08-29 17:37:59,766 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-08-29 17:37:59,767 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 [2023-08-29 17:37:59,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:37:59,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:37:59,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:37:59,890 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 [2023-08-29 17:37:59,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:37:59,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:37:59,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:37:59,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:37:59,936 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 [2023-08-29 17:37:59,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:37:59,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:37:59,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:37:59,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:37:59,985 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 [2023-08-29 17:38:00,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:00,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:00,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:00,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:00,029 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 [2023-08-29 17:38:00,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:00,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:00,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:00,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:00,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:00,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:00,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:00,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:00,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:00,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:00,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:00,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:00,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:00,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:00,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:00,284 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 17:38:00,285 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 [2023-08-29 17:38:14,428 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:38:14,429 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 17:38:14,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751742974] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:38:14,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 17:38:14,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [20] total 30 [2023-08-29 17:38:14,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778148293] [2023-08-29 17:38:14,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:38:14,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-29 17:38:14,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:38:14,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-29 17:38:14,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=812, Unknown=6, NotChecked=0, Total=930 [2023-08-29 17:38:16,445 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] [2023-08-29 17:38:18,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:38:20,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:38:22,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:38:24,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:38:26,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:38:28,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:38:30,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:38:32,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:38:32,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 176 [2023-08-29 17:38:32,907 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) [2023-08-29 17:38:32,907 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:38:32,907 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 176 [2023-08-29 17:38:32,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:38:35,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:38:39,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:38:41,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:38:43,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:38:47,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:38:49,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:38:51,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:38:54,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:38:54,135 INFO L130 PetriNetUnfolder]: 775/1766 cut-off events. [2023-08-29 17:38:54,136 INFO L131 PetriNetUnfolder]: For 6602/6636 co-relation queries the response was YES. [2023-08-29 17:38:54,146 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. [2023-08-29 17:38:54,155 INFO L137 encePairwiseOnDemand]: 159/176 looper letters, 196 selfloop transitions, 95 changer transitions 60/369 dead transitions. [2023-08-29 17:38:54,155 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 369 transitions, 4091 flow [2023-08-29 17:38:54,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-29 17:38:54,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-29 17:38:54,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 781 transitions. [2023-08-29 17:38:54,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44375 [2023-08-29 17:38:54,159 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 781 transitions. [2023-08-29 17:38:54,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 781 transitions. [2023-08-29 17:38:54,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:38:54,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 781 transitions. [2023-08-29 17:38:54,161 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) [2023-08-29 17:38:54,164 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) [2023-08-29 17:38:54,164 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) [2023-08-29 17:38:54,165 INFO L175 Difference]: Start difference. First operand has 116 places, 233 transitions, 2199 flow. Second operand 10 states and 781 transitions. [2023-08-29 17:38:54,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 369 transitions, 4091 flow [2023-08-29 17:38:54,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 369 transitions, 4083 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-29 17:38:54,233 INFO L231 Difference]: Finished difference. Result has 130 places, 255 transitions, 2897 flow [2023-08-29 17:38:54,233 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} [2023-08-29 17:38:54,234 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 90 predicate places. [2023-08-29 17:38:54,234 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 255 transitions, 2897 flow [2023-08-29 17:38:54,234 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) [2023-08-29 17:38:54,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:38:54,235 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] [2023-08-29 17:38:54,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-29 17:38:54,443 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 [2023-08-29 17:38:54,443 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)] === [2023-08-29 17:38:54,443 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:38:54,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1200895305, now seen corresponding path program 1 times [2023-08-29 17:38:54,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:38:54,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844949625] [2023-08-29 17:38:54,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:38:54,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:38:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:38:55,963 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:38:55,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:38:55,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844949625] [2023-08-29 17:38:55,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844949625] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:38:55,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 17:38:55,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-29 17:38:55,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144115841] [2023-08-29 17:38:55,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:38:55,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-29 17:38:55,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:38:55,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-29 17:38:55,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-08-29 17:38:56,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 176 [2023-08-29 17:38:56,394 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) [2023-08-29 17:38:56,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:38:56,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 176 [2023-08-29 17:38:56,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:38:57,133 INFO L130 PetriNetUnfolder]: 637/1556 cut-off events. [2023-08-29 17:38:57,133 INFO L131 PetriNetUnfolder]: For 8508/8561 co-relation queries the response was YES. [2023-08-29 17:38:57,143 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. [2023-08-29 17:38:57,151 INFO L137 encePairwiseOnDemand]: 160/176 looper letters, 311 selfloop transitions, 74 changer transitions 52/487 dead transitions. [2023-08-29 17:38:57,151 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 487 transitions, 5673 flow [2023-08-29 17:38:57,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-29 17:38:57,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-29 17:38:57,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1360 transitions. [2023-08-29 17:38:57,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2023-08-29 17:38:57,155 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1360 transitions. [2023-08-29 17:38:57,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1360 transitions. [2023-08-29 17:38:57,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:38:57,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1360 transitions. [2023-08-29 17:38:57,159 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) [2023-08-29 17:38:57,163 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) [2023-08-29 17:38:57,163 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) [2023-08-29 17:38:57,164 INFO L175 Difference]: Start difference. First operand has 130 places, 255 transitions, 2897 flow. Second operand 17 states and 1360 transitions. [2023-08-29 17:38:57,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 487 transitions, 5673 flow [2023-08-29 17:38:57,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 487 transitions, 5593 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-08-29 17:38:57,204 INFO L231 Difference]: Finished difference. Result has 157 places, 306 transitions, 3728 flow [2023-08-29 17:38:57,205 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} [2023-08-29 17:38:57,205 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 117 predicate places. [2023-08-29 17:38:57,206 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 306 transitions, 3728 flow [2023-08-29 17:38:57,206 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) [2023-08-29 17:38:57,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:38:57,206 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] [2023-08-29 17:38:57,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 17:38:57,207 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)] === [2023-08-29 17:38:57,207 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:38:57,207 INFO L85 PathProgramCache]: Analyzing trace with hash 870491643, now seen corresponding path program 2 times [2023-08-29 17:38:57,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:38:57,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113544738] [2023-08-29 17:38:57,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:38:57,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:38:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:39:30,124 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 17:39:30,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:39:30,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113544738] [2023-08-29 17:39:30,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113544738] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:39:30,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304284014] [2023-08-29 17:39:30,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 17:39:30,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:39:30,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:39:30,126 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 17:39:30,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-29 17:39:30,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 17:39:30,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 17:39:30,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 47 conjunts are in the unsatisfiable core [2023-08-29 17:39:30,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:39:30,246 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 [2023-08-29 17:39:30,328 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 [2023-08-29 17:39:30,378 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 [2023-08-29 17:39:30,425 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 [2023-08-29 17:39:30,480 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 [2023-08-29 17:39:30,542 INFO L321 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2023-08-29 17:39:30,542 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 [2023-08-29 17:39:30,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:30,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:30,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:30,646 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 [2023-08-29 17:39:30,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:30,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:30,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:30,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:30,689 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 [2023-08-29 17:39:30,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:30,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:30,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:30,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:30,727 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 [2023-08-29 17:39:30,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:30,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:30,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:30,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:30,756 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 [2023-08-29 17:39:30,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:30,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:30,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:30,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:30,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:30,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:30,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:30,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:30,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:30,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:30,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:30,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:31,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:31,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:31,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:31,008 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 17:39:31,008 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 [2023-08-29 17:39:39,123 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:39:39,123 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 17:39:39,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304284014] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:39:39,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 17:39:39,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [20] total 30 [2023-08-29 17:39:39,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847779579] [2023-08-29 17:39:39,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:39:39,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-29 17:39:39,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:39:39,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-29 17:39:39,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=786, Unknown=3, NotChecked=0, Total=930 [2023-08-29 17:39:41,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:39:43,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:39:45,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:39:47,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:39:49,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:39:51,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:39:53,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:39:55,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:39:57,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:39:59,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:40:01,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:40:03,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:40:03,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 176 [2023-08-29 17:40:03,621 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) [2023-08-29 17:40:03,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:40:03,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 176 [2023-08-29 17:40:03,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:40:07,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:40:09,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:40:11,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:40:13,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:40:17,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:40:20,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:40:22,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:40:24,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:40:26,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:40:28,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:40:28,690 INFO L130 PetriNetUnfolder]: 877/2017 cut-off events. [2023-08-29 17:40:28,690 INFO L131 PetriNetUnfolder]: For 13414/13487 co-relation queries the response was YES. [2023-08-29 17:40:28,702 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. [2023-08-29 17:40:28,713 INFO L137 encePairwiseOnDemand]: 157/176 looper letters, 283 selfloop transitions, 151 changer transitions 35/504 dead transitions. [2023-08-29 17:40:28,713 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 504 transitions, 6746 flow [2023-08-29 17:40:28,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 17:40:28,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 17:40:28,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 875 transitions. [2023-08-29 17:40:28,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41429924242424243 [2023-08-29 17:40:28,717 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 875 transitions. [2023-08-29 17:40:28,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 875 transitions. [2023-08-29 17:40:28,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:40:28,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 875 transitions. [2023-08-29 17:40:28,719 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) [2023-08-29 17:40:28,722 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) [2023-08-29 17:40:28,722 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) [2023-08-29 17:40:28,723 INFO L175 Difference]: Start difference. First operand has 157 places, 306 transitions, 3728 flow. Second operand 12 states and 875 transitions. [2023-08-29 17:40:28,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 504 transitions, 6746 flow [2023-08-29 17:40:28,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 504 transitions, 6674 flow, removed 36 selfloop flow, removed 5 redundant places. [2023-08-29 17:40:28,798 INFO L231 Difference]: Finished difference. Result has 166 places, 373 transitions, 5264 flow [2023-08-29 17:40:28,799 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} [2023-08-29 17:40:28,799 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 126 predicate places. [2023-08-29 17:40:28,799 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 373 transitions, 5264 flow [2023-08-29 17:40:28,800 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) [2023-08-29 17:40:28,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:40:28,800 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] [2023-08-29 17:40:28,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-29 17:40:29,008 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 [2023-08-29 17:40:29,009 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)] === [2023-08-29 17:40:29,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:40:29,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1290687197, now seen corresponding path program 3 times [2023-08-29 17:40:29,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:40:29,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104145747] [2023-08-29 17:40:29,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:40:29,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:40:29,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:40:32,845 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 17:40:32,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:40:32,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104145747] [2023-08-29 17:40:32,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104145747] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:40:32,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973689896] [2023-08-29 17:40:32,846 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 17:40:32,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:40:32,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:40:32,847 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 17:40:32,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-29 17:40:32,941 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-29 17:40:32,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 17:40:32,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 45 conjunts are in the unsatisfiable core [2023-08-29 17:40:32,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:40:32,952 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 [2023-08-29 17:40:32,990 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-08-29 17:40:32,991 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 [2023-08-29 17:40:33,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-29 17:40:33,082 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 [2023-08-29 17:40:33,137 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 [2023-08-29 17:40:33,223 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 [2023-08-29 17:40:33,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:40:33,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:40:33,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:40:33,302 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 [2023-08-29 17:40:33,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:40:33,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:40:33,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:40:33,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:40:33,343 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 [2023-08-29 17:40:33,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:40:33,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:40:33,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:40:33,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:40:33,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:40:33,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:40:33,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:40:33,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:40:33,431 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 [2023-08-29 17:40:33,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:40:33,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:40:33,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:40:33,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:40:33,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:40:33,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:40:33,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:40:33,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:40:33,471 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 [2023-08-29 17:40:33,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:40:33,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:40:33,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:40:33,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:40:33,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:40:33,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:40:33,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:40:33,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:40:33,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:40:33,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:40:33,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:40:33,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:40:33,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:40:33,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:40:33,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:40:33,694 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 17:40:33,694 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 [2023-08-29 17:40:45,803 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:40:45,803 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 17:40:45,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973689896] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:40:45,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 17:40:45,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [21] total 32 [2023-08-29 17:40:45,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550803141] [2023-08-29 17:40:45,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:40:45,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-29 17:40:45,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:40:45,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-29 17:40:45,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=883, Unknown=5, NotChecked=0, Total=1056 [2023-08-29 17:40:47,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:40:49,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:40:51,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:40:53,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:40:56,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:40:58,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:41:00,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:41:00,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 176 [2023-08-29 17:41:00,289 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 373 transitions, 5264 flow. Second operand has 12 states, 12 states have (on average 64.58333333333333) internal successors, (775), 12 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:41:00,289 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:41:00,289 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 176 [2023-08-29 17:41:00,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:41:04,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:41:06,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:41:08,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:41:10,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:41:14,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:41:18,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:41:21,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:41:22,075 INFO L130 PetriNetUnfolder]: 1003/2273 cut-off events. [2023-08-29 17:41:22,076 INFO L131 PetriNetUnfolder]: For 22333/22391 co-relation queries the response was YES. [2023-08-29 17:41:22,094 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. [2023-08-29 17:41:22,109 INFO L137 encePairwiseOnDemand]: 161/176 looper letters, 481 selfloop transitions, 96 changer transitions 32/620 dead transitions. [2023-08-29 17:41:22,109 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 620 transitions, 9184 flow [2023-08-29 17:41:22,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 17:41:22,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 17:41:22,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 916 transitions. [2023-08-29 17:41:22,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4337121212121212 [2023-08-29 17:41:22,113 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 916 transitions. [2023-08-29 17:41:22,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 916 transitions. [2023-08-29 17:41:22,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:41:22,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 916 transitions. [2023-08-29 17:41:22,116 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) [2023-08-29 17:41:22,119 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) [2023-08-29 17:41:22,119 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) [2023-08-29 17:41:22,119 INFO L175 Difference]: Start difference. First operand has 166 places, 373 transitions, 5264 flow. Second operand 12 states and 916 transitions. [2023-08-29 17:41:22,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 620 transitions, 9184 flow [2023-08-29 17:41:22,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 620 transitions, 9126 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-08-29 17:41:22,218 INFO L231 Difference]: Finished difference. Result has 181 places, 425 transitions, 6449 flow [2023-08-29 17:41:22,219 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} [2023-08-29 17:41:22,219 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 141 predicate places. [2023-08-29 17:41:22,219 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 425 transitions, 6449 flow [2023-08-29 17:41:22,220 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) [2023-08-29 17:41:22,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:41:22,220 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] [2023-08-29 17:41:22,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-29 17:41:22,420 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 [2023-08-29 17:41:22,421 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)] === [2023-08-29 17:41:22,422 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:41:22,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1787307839, now seen corresponding path program 4 times [2023-08-29 17:41:22,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:41:22,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561330309] [2023-08-29 17:41:22,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:41:22,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:41:22,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:41:23,821 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:41:23,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:41:23,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561330309] [2023-08-29 17:41:23,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561330309] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:41:23,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 17:41:23,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-29 17:41:23,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56472177] [2023-08-29 17:41:23,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:41:23,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-29 17:41:23,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:41:23,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-29 17:41:23,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-08-29 17:41:24,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 176 [2023-08-29 17:41:24,202 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) [2023-08-29 17:41:24,202 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:41:24,202 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 176 [2023-08-29 17:41:24,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:41:25,352 INFO L130 PetriNetUnfolder]: 934/2244 cut-off events. [2023-08-29 17:41:25,352 INFO L131 PetriNetUnfolder]: For 26705/26793 co-relation queries the response was YES. [2023-08-29 17:41:25,365 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. [2023-08-29 17:41:25,373 INFO L137 encePairwiseOnDemand]: 161/176 looper letters, 345 selfloop transitions, 182 changer transitions 23/579 dead transitions. [2023-08-29 17:41:25,373 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 579 transitions, 9638 flow [2023-08-29 17:41:25,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 17:41:25,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 17:41:25,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 976 transitions. [2023-08-29 17:41:25,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4621212121212121 [2023-08-29 17:41:25,377 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 976 transitions. [2023-08-29 17:41:25,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 976 transitions. [2023-08-29 17:41:25,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:41:25,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 976 transitions. [2023-08-29 17:41:25,379 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) [2023-08-29 17:41:25,381 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) [2023-08-29 17:41:25,382 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) [2023-08-29 17:41:25,382 INFO L175 Difference]: Start difference. First operand has 181 places, 425 transitions, 6449 flow. Second operand 12 states and 976 transitions. [2023-08-29 17:41:25,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 579 transitions, 9638 flow [2023-08-29 17:41:25,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 579 transitions, 9504 flow, removed 48 selfloop flow, removed 2 redundant places. [2023-08-29 17:41:25,476 INFO L231 Difference]: Finished difference. Result has 198 places, 474 transitions, 8018 flow [2023-08-29 17:41:25,476 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} [2023-08-29 17:41:25,477 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 158 predicate places. [2023-08-29 17:41:25,477 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 474 transitions, 8018 flow [2023-08-29 17:41:25,477 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) [2023-08-29 17:41:25,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:41:25,478 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] [2023-08-29 17:41:25,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-29 17:41:25,478 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)] === [2023-08-29 17:41:25,478 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:41:25,478 INFO L85 PathProgramCache]: Analyzing trace with hash -901787285, now seen corresponding path program 1 times [2023-08-29 17:41:25,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:41:25,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134863746] [2023-08-29 17:41:25,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:41:25,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:41:25,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:41:28,191 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 17:41:28,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:41:28,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134863746] [2023-08-29 17:41:28,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134863746] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:41:28,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418045095] [2023-08-29 17:41:28,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:41:28,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:41:28,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:41:28,193 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 17:41:28,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-29 17:41:28,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:41:28,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-29 17:41:28,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:41:28,363 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 [2023-08-29 17:41:28,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-29 17:41:28,441 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-08-29 17:41:28,442 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 [2023-08-29 17:41:28,547 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 [2023-08-29 17:41:28,601 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 [2023-08-29 17:41:28,672 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 [2023-08-29 17:41:28,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:41:28,762 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 17:41:28,762 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 [2023-08-29 17:41:28,826 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-29 17:41:28,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 17:41:29,695 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 [2023-08-29 17:41:29,762 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:41:29,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418045095] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-29 17:41:29,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-29 17:41:29,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [19, 12] total 37 [2023-08-29 17:41:29,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135200027] [2023-08-29 17:41:29,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:41:29,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 17:41:29,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:41:29,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 17:41:29,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1259, Unknown=0, NotChecked=0, Total=1406 [2023-08-29 17:41:31,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 176 [2023-08-29 17:41:31,799 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) [2023-08-29 17:41:31,799 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:41:31,799 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 176 [2023-08-29 17:41:31,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:41:34,635 INFO L130 PetriNetUnfolder]: 998/2376 cut-off events. [2023-08-29 17:41:34,635 INFO L131 PetriNetUnfolder]: For 34008/34033 co-relation queries the response was YES. [2023-08-29 17:41:34,650 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. [2023-08-29 17:41:34,662 INFO L137 encePairwiseOnDemand]: 158/176 looper letters, 297 selfloop transitions, 218 changer transitions 53/590 dead transitions. [2023-08-29 17:41:34,662 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 590 transitions, 10553 flow [2023-08-29 17:41:34,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-29 17:41:34,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-29 17:41:34,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 786 transitions. [2023-08-29 17:41:34,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4465909090909091 [2023-08-29 17:41:34,665 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 786 transitions. [2023-08-29 17:41:34,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 786 transitions. [2023-08-29 17:41:34,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:41:34,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 786 transitions. [2023-08-29 17:41:34,667 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) [2023-08-29 17:41:34,669 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) [2023-08-29 17:41:34,669 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) [2023-08-29 17:41:34,669 INFO L175 Difference]: Start difference. First operand has 198 places, 474 transitions, 8018 flow. Second operand 10 states and 786 transitions. [2023-08-29 17:41:34,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 590 transitions, 10553 flow [2023-08-29 17:41:34,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 590 transitions, 10442 flow, removed 25 selfloop flow, removed 3 redundant places. [2023-08-29 17:41:34,830 INFO L231 Difference]: Finished difference. Result has 210 places, 501 transitions, 8952 flow [2023-08-29 17:41:34,831 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} [2023-08-29 17:41:34,831 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 170 predicate places. [2023-08-29 17:41:34,831 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 501 transitions, 8952 flow [2023-08-29 17:41:34,832 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) [2023-08-29 17:41:34,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:41:34,832 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] [2023-08-29 17:41:34,843 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-29 17:41:35,037 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 [2023-08-29 17:41:35,038 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)] === [2023-08-29 17:41:35,039 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:41:35,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1438170653, now seen corresponding path program 5 times [2023-08-29 17:41:35,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:41:35,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955039578] [2023-08-29 17:41:35,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:41:35,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:41:35,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:41:39,229 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 17:41:39,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:41:39,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955039578] [2023-08-29 17:41:39,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955039578] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:41:39,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918312414] [2023-08-29 17:41:39,229 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-29 17:41:39,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:41:39,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:41:39,231 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 17:41:39,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-29 17:41:39,527 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-08-29 17:41:39,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 17:41:39,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 53 conjunts are in the unsatisfiable core [2023-08-29 17:41:39,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:41:39,591 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 [2023-08-29 17:41:39,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-29 17:41:39,664 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-08-29 17:41:39,665 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 [2023-08-29 17:41:39,715 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 [2023-08-29 17:41:39,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:41:39,764 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 [2023-08-29 17:41:39,780 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 [2023-08-29 17:41:39,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:41:39,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:41:39,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:41:39,840 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 [2023-08-29 17:41:39,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:41:39,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:41:39,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:41:39,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:41:39,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 69 [2023-08-29 17:41:39,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:41:39,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:41:39,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:41:39,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:41:39,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:41:39,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:41:39,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:41:39,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:41:39,986 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 [2023-08-29 17:41:40,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:41:40,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:41:40,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:41:40,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:41:40,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:41:40,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:41:40,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:41:40,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:41:40,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:41:40,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:41:40,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:41:40,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:41:40,078 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 [2023-08-29 17:41:40,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:41:40,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:41:40,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:41:40,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:41:40,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:41:40,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:41:40,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:41:40,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:41:40,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:41:40,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:41:40,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:41:40,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:41:40,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:41:40,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:41:40,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:41:40,234 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 17:41:40,234 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 [2023-08-29 17:41:52,328 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-08-29 17:41:52,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 17:41:58,900 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 [2023-08-29 17:41:58,971 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:41:58,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918312414] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-29 17:41:58,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-29 17:41:58,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [21, 13] total 43 [2023-08-29 17:41:58,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714449090] [2023-08-29 17:41:58,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:41:58,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-29 17:41:58,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:41:58,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-29 17:41:58,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1633, Unknown=5, NotChecked=0, Total=1892 [2023-08-29 17:42:07,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 176 [2023-08-29 17:42:07,705 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) [2023-08-29 17:42:07,705 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:42:07,705 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 176 [2023-08-29 17:42:07,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:42:35,947 INFO L130 PetriNetUnfolder]: 1032/2511 cut-off events. [2023-08-29 17:42:35,947 INFO L131 PetriNetUnfolder]: For 44948/45079 co-relation queries the response was YES. [2023-08-29 17:42:35,969 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. [2023-08-29 17:42:35,981 INFO L137 encePairwiseOnDemand]: 157/176 looper letters, 431 selfloop transitions, 264 changer transitions 19/732 dead transitions. [2023-08-29 17:42:35,981 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 732 transitions, 14008 flow [2023-08-29 17:42:35,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-29 17:42:35,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-29 17:42:35,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1275 transitions. [2023-08-29 17:42:35,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45276988636363635 [2023-08-29 17:42:35,984 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1275 transitions. [2023-08-29 17:42:35,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1275 transitions. [2023-08-29 17:42:35,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:42:35,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1275 transitions. [2023-08-29 17:42:35,987 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) [2023-08-29 17:42:35,989 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) [2023-08-29 17:42:35,990 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) [2023-08-29 17:42:35,990 INFO L175 Difference]: Start difference. First operand has 210 places, 501 transitions, 8952 flow. Second operand 16 states and 1275 transitions. [2023-08-29 17:42:35,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 732 transitions, 14008 flow [2023-08-29 17:42:36,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 732 transitions, 13923 flow, removed 27 selfloop flow, removed 1 redundant places. [2023-08-29 17:42:36,202 INFO L231 Difference]: Finished difference. Result has 236 places, 599 transitions, 11886 flow [2023-08-29 17:42:36,203 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} [2023-08-29 17:42:36,204 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 196 predicate places. [2023-08-29 17:42:36,204 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 599 transitions, 11886 flow [2023-08-29 17:42:36,204 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) [2023-08-29 17:42:36,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:42:36,204 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] [2023-08-29 17:42:36,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-29 17:42:36,413 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 [2023-08-29 17:42:36,413 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)] === [2023-08-29 17:42:36,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:42:36,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1734332913, now seen corresponding path program 3 times [2023-08-29 17:42:36,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:42:36,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847191917] [2023-08-29 17:42:36,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:42:36,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:42:36,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:43:05,132 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 17:43:05,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:43:05,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847191917] [2023-08-29 17:43:05,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847191917] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:43:05,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947892570] [2023-08-29 17:43:05,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 17:43:05,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:43:05,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:43:05,140 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 17:43:05,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-29 17:43:05,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-29 17:43:05,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 17:43:05,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 47 conjunts are in the unsatisfiable core [2023-08-29 17:43:05,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:43:05,263 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 [2023-08-29 17:43:05,327 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 [2023-08-29 17:43:05,368 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 [2023-08-29 17:43:05,414 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 [2023-08-29 17:43:05,484 INFO L321 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2023-08-29 17:43:05,484 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 [2023-08-29 17:43:05,567 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 [2023-08-29 17:43:05,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:43:05,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:43:05,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:43:05,663 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 [2023-08-29 17:43:05,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:43:05,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:43:05,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:43:05,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:43:05,694 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 [2023-08-29 17:43:05,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:43:05,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:43:05,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:43:05,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:43:05,729 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 [2023-08-29 17:43:05,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:43:05,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:43:05,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:43:05,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:43:05,754 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 [2023-08-29 17:43:05,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:43:05,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:43:05,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:43:05,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:43:05,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:43:05,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:43:05,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:43:05,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:43:05,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:43:05,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:43:05,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:43:05,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:43:05,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:43:05,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:43:05,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:43:05,952 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 17:43:05,952 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 [2023-08-29 17:43:12,032 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:43:12,032 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 17:43:12,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947892570] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:43:12,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 17:43:12,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [21] total 31 [2023-08-29 17:43:12,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826637258] [2023-08-29 17:43:12,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:43:12,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-29 17:43:12,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:43:12,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-29 17:43:12,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=835, Unknown=2, NotChecked=0, Total=992 [2023-08-29 17:43:14,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:43:16,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:43:18,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:43:20,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:43:22,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:43:24,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:43:26,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:43:28,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:43:30,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:43:32,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:43:34,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:43:34,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 176 [2023-08-29 17:43:34,571 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 599 transitions, 11886 flow. Second operand has 13 states, 13 states have (on average 61.23076923076923) internal successors, (796), 13 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:43:34,571 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:43:34,571 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 176 [2023-08-29 17:43:34,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:43:38,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:43:40,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:43:42,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:43:44,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:43:48,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:43:51,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:43:53,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:43:55,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:43:57,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:43:59,616 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] [2023-08-29 17:43:59,848 INFO L130 PetriNetUnfolder]: 1252/2878 cut-off events. [2023-08-29 17:43:59,848 INFO L131 PetriNetUnfolder]: For 64504/64661 co-relation queries the response was YES. [2023-08-29 17:43:59,868 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. [2023-08-29 17:43:59,881 INFO L137 encePairwiseOnDemand]: 157/176 looper letters, 496 selfloop transitions, 260 changer transitions 25/837 dead transitions. [2023-08-29 17:43:59,882 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 837 transitions, 17395 flow [2023-08-29 17:43:59,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 17:43:59,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 17:43:59,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 874 transitions. [2023-08-29 17:43:59,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41382575757575757 [2023-08-29 17:43:59,884 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 874 transitions. [2023-08-29 17:43:59,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 874 transitions. [2023-08-29 17:43:59,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:43:59,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 874 transitions. [2023-08-29 17:43:59,886 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) [2023-08-29 17:43:59,888 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) [2023-08-29 17:43:59,889 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) [2023-08-29 17:43:59,889 INFO L175 Difference]: Start difference. First operand has 236 places, 599 transitions, 11886 flow. Second operand 12 states and 874 transitions. [2023-08-29 17:43:59,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 837 transitions, 17395 flow [2023-08-29 17:44:00,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 837 transitions, 16859 flow, removed 132 selfloop flow, removed 1 redundant places. [2023-08-29 17:44:00,122 INFO L231 Difference]: Finished difference. Result has 252 places, 676 transitions, 14077 flow [2023-08-29 17:44:00,122 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} [2023-08-29 17:44:00,123 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 212 predicate places. [2023-08-29 17:44:00,123 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 676 transitions, 14077 flow [2023-08-29 17:44:00,124 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) [2023-08-29 17:44:00,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:44:00,124 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] [2023-08-29 17:44:00,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-29 17:44:00,324 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 [2023-08-29 17:44:00,324 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)] === [2023-08-29 17:44:00,325 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:44:00,325 INFO L85 PathProgramCache]: Analyzing trace with hash 453506027, now seen corresponding path program 2 times [2023-08-29 17:44:00,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:44:00,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736699229] [2023-08-29 17:44:00,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:44:00,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:44:00,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:44:02,072 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 17:44:02,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:44:02,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736699229] [2023-08-29 17:44:02,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736699229] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:44:02,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175628674] [2023-08-29 17:44:02,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 17:44:02,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:44:02,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:44:02,074 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 17:44:02,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-29 17:44:02,187 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 17:44:02,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 17:44:02,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-29 17:44:02,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:44:02,192 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 [2023-08-29 17:44:02,216 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-08-29 17:44:02,217 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 [2023-08-29 17:44:02,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-29 17:44:02,262 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 [2023-08-29 17:44:02,268 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-08-29 17:44:02,277 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 17:44:02,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-08-29 17:44:02,288 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 17:44:02,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2023-08-29 17:44:02,296 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:44:02,297 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 17:44:02,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175628674] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:44:02,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 17:44:02,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [19] total 21 [2023-08-29 17:44:02,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870518189] [2023-08-29 17:44:02,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:44:02,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 17:44:02,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:44:02,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 17:44:02,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2023-08-29 17:44:02,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 176 [2023-08-29 17:44:02,542 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) [2023-08-29 17:44:02,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:44:02,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 176 [2023-08-29 17:44:02,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:44:03,630 INFO L130 PetriNetUnfolder]: 1197/2874 cut-off events. [2023-08-29 17:44:03,630 INFO L131 PetriNetUnfolder]: For 70905/70946 co-relation queries the response was YES. [2023-08-29 17:44:03,652 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 21620 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. [2023-08-29 17:44:03,662 INFO L137 encePairwiseOnDemand]: 158/176 looper letters, 444 selfloop transitions, 339 changer transitions 21/831 dead transitions. [2023-08-29 17:44:03,662 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 831 transitions, 17298 flow [2023-08-29 17:44:03,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-29 17:44:03,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-29 17:44:03,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1071 transitions. [2023-08-29 17:44:03,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46809440559440557 [2023-08-29 17:44:03,665 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1071 transitions. [2023-08-29 17:44:03,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1071 transitions. [2023-08-29 17:44:03,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:44:03,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1071 transitions. [2023-08-29 17:44:03,667 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) [2023-08-29 17:44:03,669 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) [2023-08-29 17:44:03,670 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) [2023-08-29 17:44:03,670 INFO L175 Difference]: Start difference. First operand has 252 places, 676 transitions, 14077 flow. Second operand 13 states and 1071 transitions. [2023-08-29 17:44:03,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 831 transitions, 17298 flow [2023-08-29 17:44:03,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 831 transitions, 17183 flow, removed 31 selfloop flow, removed 3 redundant places. [2023-08-29 17:44:03,930 INFO L231 Difference]: Finished difference. Result has 265 places, 717 transitions, 15368 flow [2023-08-29 17:44:03,930 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} [2023-08-29 17:44:03,931 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 225 predicate places. [2023-08-29 17:44:03,931 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 717 transitions, 15368 flow [2023-08-29 17:44:03,931 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) [2023-08-29 17:44:03,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:44:03,931 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] [2023-08-29 17:44:03,935 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-29 17:44:04,132 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 [2023-08-29 17:44:04,132 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)] === [2023-08-29 17:44:04,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:44:04,132 INFO L85 PathProgramCache]: Analyzing trace with hash 371753447, now seen corresponding path program 3 times [2023-08-29 17:44:04,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:44:04,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549844406] [2023-08-29 17:44:04,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:44:04,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:44:04,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:44:04,640 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:44:04,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:44:04,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549844406] [2023-08-29 17:44:04,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549844406] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:44:04,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 17:44:04,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-29 17:44:04,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397637411] [2023-08-29 17:44:04,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:44:04,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 17:44:04,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:44:04,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 17:44:04,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-29 17:44:05,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 176 [2023-08-29 17:44:05,072 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) [2023-08-29 17:44:05,072 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:44:05,073 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 176 [2023-08-29 17:44:05,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:44:06,258 INFO L130 PetriNetUnfolder]: 1192/2864 cut-off events. [2023-08-29 17:44:06,258 INFO L131 PetriNetUnfolder]: For 78878/78919 co-relation queries the response was YES. [2023-08-29 17:44:06,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25048 conditions, 2864 events. 1192/2864 cut-off events. For 78878/78919 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 21540 event pairs, 225 based on Foata normal form. 11/2867 useless extension candidates. Maximal degree in co-relation 24901. Up to 1055 conditions per place. [2023-08-29 17:44:06,290 INFO L137 encePairwiseOnDemand]: 160/176 looper letters, 592 selfloop transitions, 194 changer transitions 20/833 dead transitions. [2023-08-29 17:44:06,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 833 transitions, 18286 flow [2023-08-29 17:44:06,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-29 17:44:06,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-29 17:44:06,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 820 transitions. [2023-08-29 17:44:06,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4659090909090909 [2023-08-29 17:44:06,292 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 820 transitions. [2023-08-29 17:44:06,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 820 transitions. [2023-08-29 17:44:06,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:44:06,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 820 transitions. [2023-08-29 17:44:06,293 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) [2023-08-29 17:44:06,295 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) [2023-08-29 17:44:06,295 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) [2023-08-29 17:44:06,296 INFO L175 Difference]: Start difference. First operand has 265 places, 717 transitions, 15368 flow. Second operand 10 states and 820 transitions. [2023-08-29 17:44:06,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 833 transitions, 18286 flow [2023-08-29 17:44:06,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 833 transitions, 18105 flow, removed 82 selfloop flow, removed 1 redundant places. [2023-08-29 17:44:06,599 INFO L231 Difference]: Finished difference. Result has 277 places, 733 transitions, 15946 flow [2023-08-29 17:44:06,599 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} [2023-08-29 17:44:06,600 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 237 predicate places. [2023-08-29 17:44:06,600 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 733 transitions, 15946 flow [2023-08-29 17:44:06,600 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) [2023-08-29 17:44:06,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:44:06,600 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] [2023-08-29 17:44:06,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-29 17:44:06,600 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)] === [2023-08-29 17:44:06,600 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:44:06,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1297343898, now seen corresponding path program 1 times [2023-08-29 17:44:06,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:44:06,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127723769] [2023-08-29 17:44:06,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:44:06,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:44:06,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:46:35,448 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 17:46:35,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:46:35,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127723769] [2023-08-29 17:46:35,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127723769] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:46:35,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960821538] [2023-08-29 17:46:35,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:46:35,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:46:35,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:46:35,456 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 17:46:35,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-29 17:46:35,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:46:35,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 47 conjunts are in the unsatisfiable core [2023-08-29 17:46:35,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:46:35,727 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 [2023-08-29 17:46:35,756 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-08-29 17:46:35,756 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 [2023-08-29 17:46:35,831 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 [2023-08-29 17:46:35,871 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 [2023-08-29 17:46:35,921 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 [2023-08-29 17:46:35,984 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 [2023-08-29 17:46:36,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:46:36,049 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 17:46:36,049 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 [2023-08-29 17:46:36,055 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-29 17:46:36,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 17:46:36,825 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:46:36,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960821538] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-29 17:46:36,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-29 17:46:36,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [19, 16] total 40 [2023-08-29 17:46:36,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790173037] [2023-08-29 17:46:36,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:46:36,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 17:46:36,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:46:36,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 17:46:36,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1460, Unknown=0, NotChecked=0, Total=1640 [2023-08-29 17:46:38,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 176 [2023-08-29 17:46:38,247 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) [2023-08-29 17:46:38,247 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:46:38,247 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 176 [2023-08-29 17:46:38,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:46:40,969 INFO L130 PetriNetUnfolder]: 1230/2922 cut-off events. [2023-08-29 17:46:40,969 INFO L131 PetriNetUnfolder]: For 84634/84690 co-relation queries the response was YES. [2023-08-29 17:46:40,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26227 conditions, 2922 events. 1230/2922 cut-off events. For 84634/84690 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 21764 event pairs, 277 based on Foata normal form. 9/2929 useless extension candidates. Maximal degree in co-relation 26076. Up to 1093 conditions per place. [2023-08-29 17:46:41,005 INFO L137 encePairwiseOnDemand]: 158/176 looper letters, 663 selfloop transitions, 183 changer transitions 39/889 dead transitions. [2023-08-29 17:46:41,005 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 889 transitions, 19922 flow [2023-08-29 17:46:41,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-29 17:46:41,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-29 17:46:41,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1176 transitions. [2023-08-29 17:46:41,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44545454545454544 [2023-08-29 17:46:41,007 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1176 transitions. [2023-08-29 17:46:41,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1176 transitions. [2023-08-29 17:46:41,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:46:41,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1176 transitions. [2023-08-29 17:46:41,010 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) [2023-08-29 17:46:41,012 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) [2023-08-29 17:46:41,013 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) [2023-08-29 17:46:41,013 INFO L175 Difference]: Start difference. First operand has 277 places, 733 transitions, 15946 flow. Second operand 15 states and 1176 transitions. [2023-08-29 17:46:41,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 889 transitions, 19922 flow [2023-08-29 17:46:41,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 889 transitions, 19706 flow, removed 19 selfloop flow, removed 2 redundant places. [2023-08-29 17:46:41,365 INFO L231 Difference]: Finished difference. Result has 299 places, 775 transitions, 16889 flow [2023-08-29 17:46:41,365 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} [2023-08-29 17:46:41,366 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 259 predicate places. [2023-08-29 17:46:41,366 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 775 transitions, 16889 flow [2023-08-29 17:46:41,366 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) [2023-08-29 17:46:41,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:46:41,367 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] [2023-08-29 17:46:41,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-29 17:46:41,573 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 [2023-08-29 17:46:41,573 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)] === [2023-08-29 17:46:41,574 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:46:41,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1960644907, now seen corresponding path program 6 times [2023-08-29 17:46:41,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:46:41,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703653526] [2023-08-29 17:46:41,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:46:41,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:46:41,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:46:42,450 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:46:42,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:46:42,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703653526] [2023-08-29 17:46:42,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703653526] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:46:42,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 17:46:42,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-29 17:46:42,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587483313] [2023-08-29 17:46:42,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:46:42,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-29 17:46:42,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:46:42,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-29 17:46:42,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-29 17:46:42,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 176 [2023-08-29 17:46:42,815 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) [2023-08-29 17:46:42,815 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:46:42,815 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 176 [2023-08-29 17:46:42,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:46:44,092 INFO L130 PetriNetUnfolder]: 1143/2788 cut-off events. [2023-08-29 17:46:44,092 INFO L131 PetriNetUnfolder]: For 87207/87350 co-relation queries the response was YES. [2023-08-29 17:46:44,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26010 conditions, 2788 events. 1143/2788 cut-off events. For 87207/87350 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 21484 event pairs, 145 based on Foata normal form. 55/2834 useless extension candidates. Maximal degree in co-relation 25850. Up to 1644 conditions per place. [2023-08-29 17:46:44,128 INFO L137 encePairwiseOnDemand]: 161/176 looper letters, 546 selfloop transitions, 298 changer transitions 19/932 dead transitions. [2023-08-29 17:46:44,129 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 932 transitions, 21571 flow [2023-08-29 17:46:44,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 17:46:44,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 17:46:44,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 992 transitions. [2023-08-29 17:46:44,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2023-08-29 17:46:44,130 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 992 transitions. [2023-08-29 17:46:44,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 992 transitions. [2023-08-29 17:46:44,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:46:44,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 992 transitions. [2023-08-29 17:46:44,132 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) [2023-08-29 17:46:44,134 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) [2023-08-29 17:46:44,135 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) [2023-08-29 17:46:44,135 INFO L175 Difference]: Start difference. First operand has 299 places, 775 transitions, 16889 flow. Second operand 12 states and 992 transitions. [2023-08-29 17:46:44,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 932 transitions, 21571 flow [2023-08-29 17:46:44,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 932 transitions, 21486 flow, removed 34 selfloop flow, removed 4 redundant places. [2023-08-29 17:46:44,523 INFO L231 Difference]: Finished difference. Result has 308 places, 828 transitions, 19548 flow [2023-08-29 17:46:44,524 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} [2023-08-29 17:46:44,524 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 268 predicate places. [2023-08-29 17:46:44,524 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 828 transitions, 19548 flow [2023-08-29 17:46:44,525 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) [2023-08-29 17:46:44,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:46:44,525 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] [2023-08-29 17:46:44,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-29 17:46:44,525 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)] === [2023-08-29 17:46:44,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:46:44,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1412033899, now seen corresponding path program 4 times [2023-08-29 17:46:44,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:46:44,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406253022] [2023-08-29 17:46:44,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:46:44,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:46:44,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:46:44,874 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:46:44,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:46:44,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406253022] [2023-08-29 17:46:44,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406253022] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:46:44,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 17:46:44,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-29 17:46:44,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904901900] [2023-08-29 17:46:44,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:46:44,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 17:46:44,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:46:44,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 17:46:44,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-08-29 17:46:45,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 176 [2023-08-29 17:46:45,162 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) [2023-08-29 17:46:45,162 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:46:45,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 176 [2023-08-29 17:46:45,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:46:46,430 INFO L130 PetriNetUnfolder]: 1210/2922 cut-off events. [2023-08-29 17:46:46,430 INFO L131 PetriNetUnfolder]: For 105204/105267 co-relation queries the response was YES. [2023-08-29 17:46:46,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28434 conditions, 2922 events. 1210/2922 cut-off events. For 105204/105267 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 22254 event pairs, 206 based on Foata normal form. 13/2923 useless extension candidates. Maximal degree in co-relation 28270. Up to 1787 conditions per place. [2023-08-29 17:46:46,470 INFO L137 encePairwiseOnDemand]: 158/176 looper letters, 486 selfloop transitions, 354 changer transitions 17/884 dead transitions. [2023-08-29 17:46:46,470 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 884 transitions, 21919 flow [2023-08-29 17:46:46,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-29 17:46:46,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-29 17:46:46,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 723 transitions. [2023-08-29 17:46:46,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4564393939393939 [2023-08-29 17:46:46,471 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 723 transitions. [2023-08-29 17:46:46,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 723 transitions. [2023-08-29 17:46:46,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:46:46,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 723 transitions. [2023-08-29 17:46:46,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 80.33333333333333) internal successors, (723), 9 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:46:46,474 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) [2023-08-29 17:46:46,474 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) [2023-08-29 17:46:46,474 INFO L175 Difference]: Start difference. First operand has 308 places, 828 transitions, 19548 flow. Second operand 9 states and 723 transitions. [2023-08-29 17:46:46,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 884 transitions, 21919 flow [2023-08-29 17:46:46,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 884 transitions, 21742 flow, removed 58 selfloop flow, removed 4 redundant places. [2023-08-29 17:46:46,934 INFO L231 Difference]: Finished difference. Result has 316 places, 835 transitions, 20391 flow [2023-08-29 17:46:46,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=19386, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=828, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=348, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=20391, PETRI_PLACES=316, PETRI_TRANSITIONS=835} [2023-08-29 17:46:46,935 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 276 predicate places. [2023-08-29 17:46:46,935 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 835 transitions, 20391 flow [2023-08-29 17:46:46,935 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) [2023-08-29 17:46:46,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:46:46,936 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] [2023-08-29 17:46:46,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-29 17:46:46,936 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 17:46:46,936 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:46:46,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1597550675, now seen corresponding path program 4 times [2023-08-29 17:46:46,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:46:46,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973265612] [2023-08-29 17:46:46,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:46:46,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:46:46,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat