./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/09-regions_17-arrayloop_nr.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/09-regions_17-arrayloop_nr.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 b29c7049a333b10d890b8afae901738020ed1f084c2a7d471b316f0abdba3430 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 20:20:31,548 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 20:20:31,550 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 20:20:31,589 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 20:20:31,591 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 20:20:31,594 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 20:20:31,596 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 20:20:31,599 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 20:20:31,600 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 20:20:31,602 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 20:20:31,603 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 20:20:31,605 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 20:20:31,605 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 20:20:31,609 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 20:20:31,611 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 20:20:31,615 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 20:20:31,616 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 20:20:31,617 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 20:20:31,619 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 20:20:31,622 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 20:20:31,625 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 20:20:31,626 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 20:20:31,627 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 20:20:31,630 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 20:20:31,632 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 20:20:31,636 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 20:20:31,636 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 20:20:31,637 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 20:20:31,638 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 20:20:31,639 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 20:20:31,639 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 20:20:31,642 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 20:20:31,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 20:20:31,644 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 20:20:31,645 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 20:20:31,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 20:20:31,646 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 20:20:31,646 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 20:20:31,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 20:20:31,647 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 20:20:31,648 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 20:20:31,649 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-31 20:20:31,669 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 20:20:31,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 20:20:31,670 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 20:20:31,670 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 20:20:31,671 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 20:20:31,671 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 20:20:31,671 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 20:20:31,672 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 20:20:31,672 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 20:20:31,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 20:20:31,672 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 20:20:31,672 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 20:20:31,673 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 20:20:31,673 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 20:20:31,673 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 20:20:31,673 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 20:20:31,673 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 20:20:31,674 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 20:20:31,674 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-31 20:20:31,674 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 20:20:31,674 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 20:20:31,674 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 20:20:31,674 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 20:20:31,675 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 20:20:31,675 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 20:20:31,675 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 20:20:31,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:20:31,675 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 20:20:31,676 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 20:20:31,676 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 20:20:31,676 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 20:20:31,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 20:20:31,676 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 20:20:31,677 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 20:20:31,677 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 20:20:31,677 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 20:20:31,677 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 20:20:31,677 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b29c7049a333b10d890b8afae901738020ed1f084c2a7d471b316f0abdba3430 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 20:20:31,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 20:20:31,988 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 20:20:31,991 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 20:20:31,991 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 20:20:31,992 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 20:20:31,993 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/09-regions_17-arrayloop_nr.i [2023-08-31 20:20:33,200 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 20:20:33,476 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 20:20:33,476 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/09-regions_17-arrayloop_nr.i [2023-08-31 20:20:33,491 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3689f5a0/b35ec46b7d9f4431b1898517653d474f/FLAG8f8fa7cec [2023-08-31 20:20:33,501 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3689f5a0/b35ec46b7d9f4431b1898517653d474f [2023-08-31 20:20:33,503 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 20:20:33,504 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 20:20:33,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 20:20:33,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 20:20:33,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 20:20:33,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:20:33" (1/1) ... [2023-08-31 20:20:33,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f0ce5a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:20:33, skipping insertion in model container [2023-08-31 20:20:33,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:20:33" (1/1) ... [2023-08-31 20:20:33,518 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 20:20:33,560 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 20:20:34,107 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:20:34,129 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 20:20:34,202 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:20:34,292 INFO L208 MainTranslator]: Completed translation [2023-08-31 20:20:34,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:20:34 WrapperNode [2023-08-31 20:20:34,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 20:20:34,294 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 20:20:34,294 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 20:20:34,294 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 20:20:34,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:20:34" (1/1) ... [2023-08-31 20:20:34,331 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:20:34" (1/1) ... [2023-08-31 20:20:34,364 INFO L138 Inliner]: procedures = 368, calls = 28, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 232 [2023-08-31 20:20:34,365 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 20:20:34,366 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 20:20:34,366 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 20:20:34,366 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 20:20:34,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:20:34" (1/1) ... [2023-08-31 20:20:34,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:20:34" (1/1) ... [2023-08-31 20:20:34,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:20:34" (1/1) ... [2023-08-31 20:20:34,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:20:34" (1/1) ... [2023-08-31 20:20:34,393 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:20:34" (1/1) ... [2023-08-31 20:20:34,397 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:20:34" (1/1) ... [2023-08-31 20:20:34,399 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:20:34" (1/1) ... [2023-08-31 20:20:34,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:20:34" (1/1) ... [2023-08-31 20:20:34,403 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 20:20:34,404 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 20:20:34,404 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 20:20:34,404 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 20:20:34,405 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:20:34" (1/1) ... [2023-08-31 20:20:34,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:20:34,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:20:34,437 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-31 20:20:34,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-31 20:20:34,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 20:20:34,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-31 20:20:34,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 20:20:34,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 20:20:34,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 20:20:34,472 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-31 20:20:34,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-31 20:20:34,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 20:20:34,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-31 20:20:34,473 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-31 20:20:34,473 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-31 20:20:34,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 20:20:34,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 20:20:34,475 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 20:20:34,651 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 20:20:34,652 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 20:20:35,141 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 20:20:35,150 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 20:20:35,150 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-31 20:20:35,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:20:35 BoogieIcfgContainer [2023-08-31 20:20:35,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 20:20:35,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 20:20:35,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 20:20:35,157 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 20:20:35,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 08:20:33" (1/3) ... [2023-08-31 20:20:35,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cd28132 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:20:35, skipping insertion in model container [2023-08-31 20:20:35,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:20:34" (2/3) ... [2023-08-31 20:20:35,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cd28132 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:20:35, skipping insertion in model container [2023-08-31 20:20:35,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:20:35" (3/3) ... [2023-08-31 20:20:35,159 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_17-arrayloop_nr.i [2023-08-31 20:20:35,165 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 20:20:35,173 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 20:20:35,173 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-08-31 20:20:35,174 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 20:20:35,267 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 20:20:35,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 253 places, 255 transitions, 515 flow [2023-08-31 20:20:35,410 INFO L130 PetriNetUnfolder]: 6/254 cut-off events. [2023-08-31 20:20:35,411 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:20:35,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 254 events. 6/254 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 405 event pairs, 0 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 191. Up to 2 conditions per place. [2023-08-31 20:20:35,420 INFO L82 GeneralOperation]: Start removeDead. Operand has 253 places, 255 transitions, 515 flow [2023-08-31 20:20:35,439 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 252 places, 254 transitions, 511 flow [2023-08-31 20:20:35,442 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:20:35,459 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 252 places, 254 transitions, 511 flow [2023-08-31 20:20:35,461 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 252 places, 254 transitions, 511 flow [2023-08-31 20:20:35,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 252 places, 254 transitions, 511 flow [2023-08-31 20:20:35,501 INFO L130 PetriNetUnfolder]: 6/254 cut-off events. [2023-08-31 20:20:35,502 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:20:35,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 254 events. 6/254 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 405 event pairs, 0 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 191. Up to 2 conditions per place. [2023-08-31 20:20:35,514 INFO L119 LiptonReduction]: Number of co-enabled transitions 17820 [2023-08-31 20:20:49,337 INFO L134 LiptonReduction]: Checked pairs total: 108171 [2023-08-31 20:20:49,338 INFO L136 LiptonReduction]: Total number of compositions: 147 [2023-08-31 20:20:49,349 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 20:20:49,354 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;@57f5fd58, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:20:49,355 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-08-31 20:20:49,357 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2023-08-31 20:20:49,357 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:20:49,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:20:49,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-31 20:20:49,358 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-31 20:20:49,362 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:20:49,363 INFO L85 PathProgramCache]: Analyzing trace with hash 25566, now seen corresponding path program 1 times [2023-08-31 20:20:49,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:20:49,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126776986] [2023-08-31 20:20:49,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:20:49,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:20:49,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:20:49,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:20:49,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:20:49,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126776986] [2023-08-31 20:20:49,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126776986] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:20:49,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:20:49,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 20:20:49,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455858045] [2023-08-31 20:20:49,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:20:49,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-31 20:20:49,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:20:49,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-31 20:20:49,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-31 20:20:49,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 402 [2023-08-31 20:20:49,544 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 122 transitions, 247 flow. Second operand has 2 states, 2 states have (on average 252.0) internal successors, (504), 2 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:20:49,544 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:20:49,544 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 402 [2023-08-31 20:20:49,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:20:49,862 INFO L130 PetriNetUnfolder]: 376/1700 cut-off events. [2023-08-31 20:20:49,862 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:20:49,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2457 conditions, 1700 events. 376/1700 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 10916 event pairs, 336 based on Foata normal form. 0/1615 useless extension candidates. Maximal degree in co-relation 2444. Up to 753 conditions per place. [2023-08-31 20:20:49,871 INFO L137 encePairwiseOnDemand]: 399/402 looper letters, 43 selfloop transitions, 0 changer transitions 0/119 dead transitions. [2023-08-31 20:20:49,871 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 119 transitions, 327 flow [2023-08-31 20:20:49,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-31 20:20:49,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-31 20:20:49,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 548 transitions. [2023-08-31 20:20:49,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.681592039800995 [2023-08-31 20:20:49,891 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 548 transitions. [2023-08-31 20:20:49,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 548 transitions. [2023-08-31 20:20:49,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:20:49,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 548 transitions. [2023-08-31 20:20:49,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 274.0) internal successors, (548), 2 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:20:49,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 402.0) internal successors, (1206), 3 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:20:49,907 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 402.0) internal successors, (1206), 3 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:20:49,908 INFO L175 Difference]: Start difference. First operand has 123 places, 122 transitions, 247 flow. Second operand 2 states and 548 transitions. [2023-08-31 20:20:49,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 119 transitions, 327 flow [2023-08-31 20:20:49,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 119 transitions, 326 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 20:20:49,914 INFO L231 Difference]: Finished difference. Result has 120 places, 119 transitions, 240 flow [2023-08-31 20:20:49,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=240, PETRI_PLACES=120, PETRI_TRANSITIONS=119} [2023-08-31 20:20:49,919 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, -3 predicate places. [2023-08-31 20:20:49,920 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 119 transitions, 240 flow [2023-08-31 20:20:49,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 252.0) internal successors, (504), 2 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:20:49,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:20:49,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:20:49,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 20:20:49,922 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-31 20:20:49,924 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:20:49,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1621363482, now seen corresponding path program 1 times [2023-08-31 20:20:49,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:20:49,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28560363] [2023-08-31 20:20:49,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:20:49,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:20:49,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:20:50,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:20:50,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:20:50,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28560363] [2023-08-31 20:20:50,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28560363] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:20:50,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:20:50,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 20:20:50,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919037138] [2023-08-31 20:20:50,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:20:50,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 20:20:50,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:20:50,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 20:20:50,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 20:20:50,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 402 [2023-08-31 20:20:50,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 119 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 245.33333333333334) internal successors, (736), 3 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:20:50,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:20:50,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 402 [2023-08-31 20:20:50,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:20:50,706 INFO L130 PetriNetUnfolder]: 716/3057 cut-off events. [2023-08-31 20:20:50,707 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:20:50,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4495 conditions, 3057 events. 716/3057 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 20536 event pairs, 336 based on Foata normal form. 0/2921 useless extension candidates. Maximal degree in co-relation 4492. Up to 753 conditions per place. [2023-08-31 20:20:50,720 INFO L137 encePairwiseOnDemand]: 396/402 looper letters, 77 selfloop transitions, 4 changer transitions 0/157 dead transitions. [2023-08-31 20:20:50,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 157 transitions, 478 flow [2023-08-31 20:20:50,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 20:20:50,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 20:20:50,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 812 transitions. [2023-08-31 20:20:50,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6733001658374793 [2023-08-31 20:20:50,724 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 812 transitions. [2023-08-31 20:20:50,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 812 transitions. [2023-08-31 20:20:50,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:20:50,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 812 transitions. [2023-08-31 20:20:50,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 270.6666666666667) internal successors, (812), 3 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:20:50,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:20:50,754 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:20:50,755 INFO L175 Difference]: Start difference. First operand has 120 places, 119 transitions, 240 flow. Second operand 3 states and 812 transitions. [2023-08-31 20:20:50,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 157 transitions, 478 flow [2023-08-31 20:20:50,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 157 transitions, 478 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 20:20:50,760 INFO L231 Difference]: Finished difference. Result has 123 places, 121 transitions, 264 flow [2023-08-31 20:20:50,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=264, PETRI_PLACES=123, PETRI_TRANSITIONS=121} [2023-08-31 20:20:50,761 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, 0 predicate places. [2023-08-31 20:20:50,764 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 121 transitions, 264 flow [2023-08-31 20:20:50,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 245.33333333333334) internal successors, (736), 3 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:20:50,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:20:50,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:20:50,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 20:20:50,767 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-31 20:20:50,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:20:50,769 INFO L85 PathProgramCache]: Analyzing trace with hash -621239689, now seen corresponding path program 1 times [2023-08-31 20:20:50,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:20:50,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755899971] [2023-08-31 20:20:50,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:20:50,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:20:50,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:20:50,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:20:50,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:20:50,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755899971] [2023-08-31 20:20:50,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755899971] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 20:20:50,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78716796] [2023-08-31 20:20:50,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:20:50,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:20:50,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:20:50,892 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 20:20:50,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-31 20:20:51,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:20:51,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-31 20:20:51,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 20:20:51,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:20:51,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 20:20:51,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:20:51,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78716796] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 20:20:51,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 20:20:51,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-31 20:20:51,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290687883] [2023-08-31 20:20:51,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 20:20:51,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 20:20:51,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:20:51,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 20:20:51,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-31 20:20:51,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 402 [2023-08-31 20:20:51,248 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 121 transitions, 264 flow. Second operand has 6 states, 6 states have (on average 242.83333333333334) internal successors, (1457), 6 states have internal predecessors, (1457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:20:51,248 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:20:51,248 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 402 [2023-08-31 20:20:51,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:20:52,721 INFO L130 PetriNetUnfolder]: 1413/6102 cut-off events. [2023-08-31 20:20:52,722 INFO L131 PetriNetUnfolder]: For 63/63 co-relation queries the response was YES. [2023-08-31 20:20:52,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9066 conditions, 6102 events. 1413/6102 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 41949 event pairs, 229 based on Foata normal form. 51/5965 useless extension candidates. Maximal degree in co-relation 9061. Up to 698 conditions per place. [2023-08-31 20:20:52,746 INFO L137 encePairwiseOnDemand]: 395/402 looper letters, 165 selfloop transitions, 11 changer transitions 0/252 dead transitions. [2023-08-31 20:20:52,747 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 252 transitions, 888 flow [2023-08-31 20:20:52,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 20:20:52,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 20:20:52,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1628 transitions. [2023-08-31 20:20:52,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6749585406301825 [2023-08-31 20:20:52,751 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1628 transitions. [2023-08-31 20:20:52,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1628 transitions. [2023-08-31 20:20:52,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:20:52,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1628 transitions. [2023-08-31 20:20:52,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 271.3333333333333) internal successors, (1628), 6 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:20:52,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 402.0) internal successors, (2814), 7 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:20:52,761 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 402.0) internal successors, (2814), 7 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:20:52,761 INFO L175 Difference]: Start difference. First operand has 123 places, 121 transitions, 264 flow. Second operand 6 states and 1628 transitions. [2023-08-31 20:20:52,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 252 transitions, 888 flow [2023-08-31 20:20:52,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 252 transitions, 884 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 20:20:52,767 INFO L231 Difference]: Finished difference. Result has 131 places, 127 transitions, 338 flow [2023-08-31 20:20:52,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=338, PETRI_PLACES=131, PETRI_TRANSITIONS=127} [2023-08-31 20:20:52,768 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, 8 predicate places. [2023-08-31 20:20:52,768 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 127 transitions, 338 flow [2023-08-31 20:20:52,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 242.83333333333334) internal successors, (1457), 6 states have internal predecessors, (1457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:20:52,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:20:52,770 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:20:52,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-31 20:20:52,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:20:52,984 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-31 20:20:52,984 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:20:52,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1665303974, now seen corresponding path program 2 times [2023-08-31 20:20:52,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:20:52,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922697864] [2023-08-31 20:20:52,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:20:52,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:20:53,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:20:53,201 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:20:53,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:20:53,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922697864] [2023-08-31 20:20:53,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922697864] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 20:20:53,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96061390] [2023-08-31 20:20:53,202 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 20:20:53,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:20:53,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:20:53,203 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 20:20:53,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-31 20:20:53,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-31 20:20:53,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 20:20:53,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-31 20:20:53,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 20:20:53,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-31 20:20:53,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-31 20:20:53,457 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:20:53,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-08-31 20:20:53,495 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 20:20:53,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2023-08-31 20:20:53,516 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-31 20:20:53,516 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 20:20:53,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96061390] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:20:53,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 20:20:53,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 12 [2023-08-31 20:20:53,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586162901] [2023-08-31 20:20:53,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:20:53,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 20:20:53,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:20:53,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 20:20:53,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-08-31 20:20:53,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 402 [2023-08-31 20:20:53,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 127 transitions, 338 flow. Second operand has 7 states, 7 states have (on average 178.85714285714286) internal successors, (1252), 7 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:20:53,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:20:53,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 402 [2023-08-31 20:20:53,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:20:56,878 INFO L130 PetriNetUnfolder]: 9007/20807 cut-off events. [2023-08-31 20:20:56,878 INFO L131 PetriNetUnfolder]: For 1582/1582 co-relation queries the response was YES. [2023-08-31 20:20:56,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39843 conditions, 20807 events. 9007/20807 cut-off events. For 1582/1582 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 139638 event pairs, 708 based on Foata normal form. 0/19912 useless extension candidates. Maximal degree in co-relation 39835. Up to 15146 conditions per place. [2023-08-31 20:20:56,974 INFO L137 encePairwiseOnDemand]: 358/402 looper letters, 253 selfloop transitions, 151 changer transitions 0/428 dead transitions. [2023-08-31 20:20:56,975 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 428 transitions, 1958 flow [2023-08-31 20:20:56,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 20:20:56,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 20:20:56,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1616 transitions. [2023-08-31 20:20:56,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.574271499644634 [2023-08-31 20:20:56,979 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1616 transitions. [2023-08-31 20:20:56,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1616 transitions. [2023-08-31 20:20:56,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:20:56,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1616 transitions. [2023-08-31 20:20:56,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 230.85714285714286) internal successors, (1616), 7 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:20:56,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 402.0) internal successors, (3216), 8 states have internal predecessors, (3216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:20:56,989 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 402.0) internal successors, (3216), 8 states have internal predecessors, (3216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:20:56,989 INFO L175 Difference]: Start difference. First operand has 131 places, 127 transitions, 338 flow. Second operand 7 states and 1616 transitions. [2023-08-31 20:20:56,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 428 transitions, 1958 flow [2023-08-31 20:20:56,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 428 transitions, 1902 flow, removed 21 selfloop flow, removed 1 redundant places. [2023-08-31 20:20:57,005 INFO L231 Difference]: Finished difference. Result has 141 places, 312 transitions, 1450 flow [2023-08-31 20:20:57,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1450, PETRI_PLACES=141, PETRI_TRANSITIONS=312} [2023-08-31 20:20:57,007 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, 18 predicate places. [2023-08-31 20:20:57,008 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 312 transitions, 1450 flow [2023-08-31 20:20:57,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 178.85714285714286) internal successors, (1252), 7 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:20:57,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:20:57,010 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:20:57,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-31 20:20:57,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-31 20:20:57,215 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-31 20:20:57,215 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:20:57,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1104611333, now seen corresponding path program 1 times [2023-08-31 20:20:57,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:20:57,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661586197] [2023-08-31 20:20:57,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:20:57,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:20:57,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:20:57,443 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:20:57,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:20:57,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661586197] [2023-08-31 20:20:57,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661586197] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 20:20:57,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518977957] [2023-08-31 20:20:57,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:20:57,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:20:57,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:20:57,449 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 20:20:57,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-31 20:20:57,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:20:57,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-31 20:20:57,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 20:20:57,674 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:20:57,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 20:20:57,722 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:20:57,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518977957] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 20:20:57,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 20:20:57,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-08-31 20:20:57,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546572118] [2023-08-31 20:20:57,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 20:20:57,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-31 20:20:57,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:20:57,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-31 20:20:57,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-31 20:20:58,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 402 [2023-08-31 20:20:58,046 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 312 transitions, 1450 flow. Second operand has 12 states, 12 states have (on average 242.5) internal successors, (2910), 12 states have internal predecessors, (2910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:20:58,046 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:20:58,046 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 402 [2023-08-31 20:20:58,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:21:03,456 INFO L130 PetriNetUnfolder]: 6709/23554 cut-off events. [2023-08-31 20:21:03,456 INFO L131 PetriNetUnfolder]: For 5839/6096 co-relation queries the response was YES. [2023-08-31 20:21:03,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51687 conditions, 23554 events. 6709/23554 cut-off events. For 5839/6096 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 171636 event pairs, 282 based on Foata normal form. 163/23291 useless extension candidates. Maximal degree in co-relation 51673. Up to 9167 conditions per place. [2023-08-31 20:21:03,565 INFO L137 encePairwiseOnDemand]: 395/402 looper letters, 553 selfloop transitions, 23 changer transitions 0/820 dead transitions. [2023-08-31 20:21:03,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 820 transitions, 4376 flow [2023-08-31 20:21:03,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-31 20:21:03,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-31 20:21:03,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3308 transitions. [2023-08-31 20:21:03,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.685737976782753 [2023-08-31 20:21:03,578 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3308 transitions. [2023-08-31 20:21:03,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3308 transitions. [2023-08-31 20:21:03,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:21:03,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3308 transitions. [2023-08-31 20:21:03,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 275.6666666666667) internal successors, (3308), 12 states have internal predecessors, (3308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:21:03,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 402.0) internal successors, (5226), 13 states have internal predecessors, (5226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:21:03,600 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 402.0) internal successors, (5226), 13 states have internal predecessors, (5226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:21:03,600 INFO L175 Difference]: Start difference. First operand has 141 places, 312 transitions, 1450 flow. Second operand 12 states and 3308 transitions. [2023-08-31 20:21:03,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 820 transitions, 4376 flow [2023-08-31 20:21:03,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 820 transitions, 4376 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 20:21:03,775 INFO L231 Difference]: Finished difference. Result has 159 places, 325 transitions, 1632 flow [2023-08-31 20:21:03,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=1450, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1632, PETRI_PLACES=159, PETRI_TRANSITIONS=325} [2023-08-31 20:21:03,778 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, 36 predicate places. [2023-08-31 20:21:03,778 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 325 transitions, 1632 flow [2023-08-31 20:21:03,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 242.5) internal successors, (2910), 12 states have internal predecessors, (2910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:21:03,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:21:03,780 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:21:03,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-31 20:21:03,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 20:21:03,988 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-31 20:21:03,988 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:21:03,989 INFO L85 PathProgramCache]: Analyzing trace with hash 2058752731, now seen corresponding path program 2 times [2023-08-31 20:21:03,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:21:03,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960529593] [2023-08-31 20:21:03,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:21:03,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:21:04,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:21:05,100 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:21:05,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:21:05,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960529593] [2023-08-31 20:21:05,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960529593] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:21:05,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:21:05,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 20:21:05,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674637492] [2023-08-31 20:21:05,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:21:05,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 20:21:05,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:21:05,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 20:21:05,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-31 20:21:05,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 402 [2023-08-31 20:21:05,415 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 325 transitions, 1632 flow. Second operand has 6 states, 6 states have (on average 177.16666666666666) internal successors, (1063), 6 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:21:05,415 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:21:05,415 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 402 [2023-08-31 20:21:05,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:21:16,353 INFO L130 PetriNetUnfolder]: 24557/55220 cut-off events. [2023-08-31 20:21:16,353 INFO L131 PetriNetUnfolder]: For 19804/20050 co-relation queries the response was YES. [2023-08-31 20:21:16,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136541 conditions, 55220 events. 24557/55220 cut-off events. For 19804/20050 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 371076 event pairs, 7520 based on Foata normal form. 0/54245 useless extension candidates. Maximal degree in co-relation 136520. Up to 47529 conditions per place. [2023-08-31 20:21:16,798 INFO L137 encePairwiseOnDemand]: 372/402 looper letters, 339 selfloop transitions, 109 changer transitions 0/492 dead transitions. [2023-08-31 20:21:16,798 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 492 transitions, 2954 flow [2023-08-31 20:21:16,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 20:21:16,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 20:21:16,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1306 transitions. [2023-08-31 20:21:16,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5414593698175788 [2023-08-31 20:21:16,803 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1306 transitions. [2023-08-31 20:21:16,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1306 transitions. [2023-08-31 20:21:16,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:21:16,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1306 transitions. [2023-08-31 20:21:16,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 217.66666666666666) internal successors, (1306), 6 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:21:16,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 402.0) internal successors, (2814), 7 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:21:16,811 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 402.0) internal successors, (2814), 7 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:21:16,811 INFO L175 Difference]: Start difference. First operand has 159 places, 325 transitions, 1632 flow. Second operand 6 states and 1306 transitions. [2023-08-31 20:21:16,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 492 transitions, 2954 flow [2023-08-31 20:21:16,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 492 transitions, 2928 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-08-31 20:21:16,975 INFO L231 Difference]: Finished difference. Result has 165 places, 428 transitions, 2261 flow [2023-08-31 20:21:16,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=1606, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2261, PETRI_PLACES=165, PETRI_TRANSITIONS=428} [2023-08-31 20:21:16,977 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, 42 predicate places. [2023-08-31 20:21:16,977 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 428 transitions, 2261 flow [2023-08-31 20:21:16,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 177.16666666666666) internal successors, (1063), 6 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:21:16,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:21:16,978 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:21:16,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 20:21:16,978 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-31 20:21:16,978 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:21:16,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1375590774, now seen corresponding path program 1 times [2023-08-31 20:21:16,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:21:16,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065853453] [2023-08-31 20:21:16,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:21:16,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:21:17,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:21:18,281 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:21:18,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:21:18,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065853453] [2023-08-31 20:21:18,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065853453] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:21:18,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:21:18,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 20:21:18,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931452891] [2023-08-31 20:21:18,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:21:18,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 20:21:18,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:21:18,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 20:21:18,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-31 20:21:18,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 402 [2023-08-31 20:21:18,980 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 428 transitions, 2261 flow. Second operand has 9 states, 9 states have (on average 174.0) internal successors, (1566), 9 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:21:18,981 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:21:18,981 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 402 [2023-08-31 20:21:18,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:21:40,144 INFO L130 PetriNetUnfolder]: 46463/104592 cut-off events. [2023-08-31 20:21:40,144 INFO L131 PetriNetUnfolder]: For 55104/55624 co-relation queries the response was YES. [2023-08-31 20:21:40,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296858 conditions, 104592 events. 46463/104592 cut-off events. For 55104/55624 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 812348 event pairs, 2415 based on Foata normal form. 190/102591 useless extension candidates. Maximal degree in co-relation 296832. Up to 42920 conditions per place. [2023-08-31 20:21:40,745 INFO L137 encePairwiseOnDemand]: 364/402 looper letters, 855 selfloop transitions, 157 changer transitions 1/1053 dead transitions. [2023-08-31 20:21:40,745 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 1053 transitions, 7657 flow [2023-08-31 20:21:40,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-31 20:21:40,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-31 20:21:40,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2767 transitions. [2023-08-31 20:21:40,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5294680443934175 [2023-08-31 20:21:40,752 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2767 transitions. [2023-08-31 20:21:40,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2767 transitions. [2023-08-31 20:21:40,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:21:40,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2767 transitions. [2023-08-31 20:21:40,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 212.84615384615384) internal successors, (2767), 13 states have internal predecessors, (2767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:21:40,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 402.0) internal successors, (5628), 14 states have internal predecessors, (5628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:21:40,766 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 402.0) internal successors, (5628), 14 states have internal predecessors, (5628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:21:40,766 INFO L175 Difference]: Start difference. First operand has 165 places, 428 transitions, 2261 flow. Second operand 13 states and 2767 transitions. [2023-08-31 20:21:40,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 1053 transitions, 7657 flow [2023-08-31 20:21:41,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 1053 transitions, 7585 flow, removed 36 selfloop flow, removed 0 redundant places. [2023-08-31 20:21:41,889 INFO L231 Difference]: Finished difference. Result has 188 places, 585 transitions, 4179 flow [2023-08-31 20:21:41,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=2237, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4179, PETRI_PLACES=188, PETRI_TRANSITIONS=585} [2023-08-31 20:21:41,890 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, 65 predicate places. [2023-08-31 20:21:41,890 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 585 transitions, 4179 flow [2023-08-31 20:21:41,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 174.0) internal successors, (1566), 9 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:21:41,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:21:41,891 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:21:41,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 20:21:41,893 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-31 20:21:41,893 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:21:41,894 INFO L85 PathProgramCache]: Analyzing trace with hash 869726804, now seen corresponding path program 2 times [2023-08-31 20:21:41,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:21:41,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754515353] [2023-08-31 20:21:41,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:21:41,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:21:42,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:21:43,026 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:21:43,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:21:43,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754515353] [2023-08-31 20:21:43,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754515353] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:21:43,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:21:43,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 20:21:43,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668480138] [2023-08-31 20:21:43,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:21:43,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 20:21:43,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:21:43,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 20:21:43,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-31 20:21:43,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 402 [2023-08-31 20:21:43,740 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 585 transitions, 4179 flow. Second operand has 9 states, 9 states have (on average 174.0) internal successors, (1566), 9 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:21:43,740 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:21:43,740 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 402 [2023-08-31 20:21:43,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:22:08,362 INFO L130 PetriNetUnfolder]: 46323/104382 cut-off events. [2023-08-31 20:22:08,363 INFO L131 PetriNetUnfolder]: For 98994/99564 co-relation queries the response was YES. [2023-08-31 20:22:08,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321478 conditions, 104382 events. 46323/104382 cut-off events. For 98994/99564 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 809977 event pairs, 3784 based on Foata normal form. 110/102451 useless extension candidates. Maximal degree in co-relation 321440. Up to 49188 conditions per place. [2023-08-31 20:22:09,040 INFO L137 encePairwiseOnDemand]: 362/402 looper letters, 838 selfloop transitions, 168 changer transitions 2/1048 dead transitions. [2023-08-31 20:22:09,040 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 1048 transitions, 8698 flow [2023-08-31 20:22:09,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-31 20:22:09,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-31 20:22:09,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2895 transitions. [2023-08-31 20:22:09,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5143923240938166 [2023-08-31 20:22:09,047 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2895 transitions. [2023-08-31 20:22:09,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2895 transitions. [2023-08-31 20:22:09,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:22:09,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2895 transitions. [2023-08-31 20:22:09,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 206.78571428571428) internal successors, (2895), 14 states have internal predecessors, (2895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:22:09,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 402.0) internal successors, (6030), 15 states have internal predecessors, (6030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:22:09,061 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 402.0) internal successors, (6030), 15 states have internal predecessors, (6030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:22:09,061 INFO L175 Difference]: Start difference. First operand has 188 places, 585 transitions, 4179 flow. Second operand 14 states and 2895 transitions. [2023-08-31 20:22:09,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 1048 transitions, 8698 flow [2023-08-31 20:22:12,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 1048 transitions, 8698 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 20:22:12,513 INFO L231 Difference]: Finished difference. Result has 211 places, 628 transitions, 5307 flow [2023-08-31 20:22:12,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=4179, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5307, PETRI_PLACES=211, PETRI_TRANSITIONS=628} [2023-08-31 20:22:12,513 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, 88 predicate places. [2023-08-31 20:22:12,514 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 628 transitions, 5307 flow [2023-08-31 20:22:12,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 174.0) internal successors, (1566), 9 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:22:12,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:22:12,514 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:22:12,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 20:22:12,515 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-31 20:22:12,515 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:22:12,515 INFO L85 PathProgramCache]: Analyzing trace with hash -367352326, now seen corresponding path program 1 times [2023-08-31 20:22:12,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:22:12,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854184388] [2023-08-31 20:22:12,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:22:12,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:22:12,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:22:13,555 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:22:13,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:22:13,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854184388] [2023-08-31 20:22:13,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854184388] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:22:13,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:22:13,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 20:22:13,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874473629] [2023-08-31 20:22:13,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:22:13,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 20:22:13,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:22:13,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 20:22:13,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-08-31 20:22:14,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 402 [2023-08-31 20:22:14,081 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 628 transitions, 5307 flow. Second operand has 9 states, 9 states have (on average 174.0) internal successors, (1566), 9 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:22:14,081 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:22:14,081 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 402 [2023-08-31 20:22:14,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:22:43,081 INFO L130 PetriNetUnfolder]: 47457/107302 cut-off events. [2023-08-31 20:22:43,082 INFO L131 PetriNetUnfolder]: For 150672/152572 co-relation queries the response was YES. [2023-08-31 20:22:43,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347243 conditions, 107302 events. 47457/107302 cut-off events. For 150672/152572 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 827911 event pairs, 21775 based on Foata normal form. 22/105462 useless extension candidates. Maximal degree in co-relation 347194. Up to 90415 conditions per place. [2023-08-31 20:22:44,344 INFO L137 encePairwiseOnDemand]: 369/402 looper letters, 561 selfloop transitions, 154 changer transitions 1/760 dead transitions. [2023-08-31 20:22:44,344 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 760 transitions, 7379 flow [2023-08-31 20:22:44,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 20:22:44,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 20:22:44,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1687 transitions. [2023-08-31 20:22:44,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5245646766169154 [2023-08-31 20:22:44,372 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1687 transitions. [2023-08-31 20:22:44,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1687 transitions. [2023-08-31 20:22:44,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:22:44,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1687 transitions. [2023-08-31 20:22:44,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 210.875) internal successors, (1687), 8 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:22:44,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 402.0) internal successors, (3618), 9 states have internal predecessors, (3618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:22:44,398 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 402.0) internal successors, (3618), 9 states have internal predecessors, (3618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:22:44,398 INFO L175 Difference]: Start difference. First operand has 211 places, 628 transitions, 5307 flow. Second operand 8 states and 1687 transitions. [2023-08-31 20:22:44,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 760 transitions, 7379 flow [2023-08-31 20:22:50,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 760 transitions, 6891 flow, removed 175 selfloop flow, removed 1 redundant places. [2023-08-31 20:22:50,249 INFO L231 Difference]: Finished difference. Result has 219 places, 633 transitions, 5248 flow [2023-08-31 20:22:50,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=4853, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5248, PETRI_PLACES=219, PETRI_TRANSITIONS=633} [2023-08-31 20:22:50,250 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, 96 predicate places. [2023-08-31 20:22:50,250 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 633 transitions, 5248 flow [2023-08-31 20:22:50,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 174.0) internal successors, (1566), 9 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:22:50,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:22:50,251 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:22:50,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 20:22:50,251 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-31 20:22:50,252 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:22:50,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1605052882, now seen corresponding path program 2 times [2023-08-31 20:22:50,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:22:50,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579203746] [2023-08-31 20:22:50,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:22:50,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:22:50,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:22:51,214 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:22:51,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:22:51,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579203746] [2023-08-31 20:22:51,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579203746] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:22:51,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:22:51,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 20:22:51,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472937503] [2023-08-31 20:22:51,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:22:51,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 20:22:51,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:22:51,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 20:22:51,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-31 20:22:51,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 402 [2023-08-31 20:22:51,828 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 633 transitions, 5248 flow. Second operand has 9 states, 9 states have (on average 174.0) internal successors, (1566), 9 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:22:51,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:22:51,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 402 [2023-08-31 20:22:51,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:23:17,810 INFO L130 PetriNetUnfolder]: 48267/109286 cut-off events. [2023-08-31 20:23:17,810 INFO L131 PetriNetUnfolder]: For 130885/132835 co-relation queries the response was YES. [2023-08-31 20:23:18,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357276 conditions, 109286 events. 48267/109286 cut-off events. For 130885/132835 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 852859 event pairs, 2908 based on Foata normal form. 80/107473 useless extension candidates. Maximal degree in co-relation 357225. Up to 49677 conditions per place. [2023-08-31 20:23:18,755 INFO L137 encePairwiseOnDemand]: 375/402 looper letters, 863 selfloop transitions, 123 changer transitions 2/1032 dead transitions. [2023-08-31 20:23:18,755 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 1032 transitions, 9509 flow [2023-08-31 20:23:18,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 20:23:18,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 20:23:18,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2136 transitions. [2023-08-31 20:23:18,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5313432835820896 [2023-08-31 20:23:18,759 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2136 transitions. [2023-08-31 20:23:18,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2136 transitions. [2023-08-31 20:23:18,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:23:18,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2136 transitions. [2023-08-31 20:23:18,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 213.6) internal successors, (2136), 10 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:23:18,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 402.0) internal successors, (4422), 11 states have internal predecessors, (4422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:23:18,765 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 402.0) internal successors, (4422), 11 states have internal predecessors, (4422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:23:18,766 INFO L175 Difference]: Start difference. First operand has 219 places, 633 transitions, 5248 flow. Second operand 10 states and 2136 transitions. [2023-08-31 20:23:18,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 1032 transitions, 9509 flow [2023-08-31 20:23:22,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 1032 transitions, 9067 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-31 20:23:22,697 INFO L231 Difference]: Finished difference. Result has 229 places, 735 transitions, 6274 flow [2023-08-31 20:23:22,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=4979, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=519, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6274, PETRI_PLACES=229, PETRI_TRANSITIONS=735} [2023-08-31 20:23:22,699 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, 106 predicate places. [2023-08-31 20:23:22,699 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 735 transitions, 6274 flow [2023-08-31 20:23:22,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 174.0) internal successors, (1566), 9 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:23:22,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:23:22,699 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:23:22,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 20:23:22,699 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-31 20:23:22,700 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:23:22,700 INFO L85 PathProgramCache]: Analyzing trace with hash 11992814, now seen corresponding path program 3 times [2023-08-31 20:23:22,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:23:22,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708890112] [2023-08-31 20:23:22,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:23:22,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:23:22,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:23:23,644 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:23:23,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:23:23,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708890112] [2023-08-31 20:23:23,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708890112] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:23:23,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:23:23,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 20:23:23,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768689153] [2023-08-31 20:23:23,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:23:23,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 20:23:23,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:23:23,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 20:23:23,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-08-31 20:23:24,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 402 [2023-08-31 20:23:24,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 735 transitions, 6274 flow. Second operand has 9 states, 9 states have (on average 174.0) internal successors, (1566), 9 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:23:24,349 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:23:24,350 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 402 [2023-08-31 20:23:24,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:23:54,688 INFO L130 PetriNetUnfolder]: 48607/109682 cut-off events. [2023-08-31 20:23:54,688 INFO L131 PetriNetUnfolder]: For 180708/182658 co-relation queries the response was YES. [2023-08-31 20:23:55,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375299 conditions, 109682 events. 48607/109682 cut-off events. For 180708/182658 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 847401 event pairs, 21815 based on Foata normal form. 42/107862 useless extension candidates. Maximal degree in co-relation 375242. Up to 92035 conditions per place. [2023-08-31 20:23:55,705 INFO L137 encePairwiseOnDemand]: 369/402 looper letters, 598 selfloop transitions, 243 changer transitions 1/886 dead transitions. [2023-08-31 20:23:55,706 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 886 transitions, 8732 flow [2023-08-31 20:23:55,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 20:23:55,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 20:23:55,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1874 transitions. [2023-08-31 20:23:55,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5179657269209508 [2023-08-31 20:23:55,708 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1874 transitions. [2023-08-31 20:23:55,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1874 transitions. [2023-08-31 20:23:55,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:23:55,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1874 transitions. [2023-08-31 20:23:55,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 208.22222222222223) internal successors, (1874), 9 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:23:55,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 402.0) internal successors, (4020), 10 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:23:55,714 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 402.0) internal successors, (4020), 10 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:23:55,714 INFO L175 Difference]: Start difference. First operand has 229 places, 735 transitions, 6274 flow. Second operand 9 states and 1874 transitions. [2023-08-31 20:23:55,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 886 transitions, 8732 flow [2023-08-31 20:24:00,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 886 transitions, 8710 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-31 20:24:00,224 INFO L231 Difference]: Finished difference. Result has 239 places, 748 transitions, 7040 flow [2023-08-31 20:24:00,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=6252, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=735, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=230, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7040, PETRI_PLACES=239, PETRI_TRANSITIONS=748} [2023-08-31 20:24:00,225 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, 116 predicate places. [2023-08-31 20:24:00,225 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 748 transitions, 7040 flow [2023-08-31 20:24:00,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 174.0) internal successors, (1566), 9 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:24:00,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:24:00,226 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:24:00,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 20:24:00,226 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-31 20:24:00,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:24:00,226 INFO L85 PathProgramCache]: Analyzing trace with hash -800353708, now seen corresponding path program 3 times [2023-08-31 20:24:00,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:24:00,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761791424] [2023-08-31 20:24:00,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:24:00,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:24:00,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:24:01,052 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-31 20:24:01,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:24:01,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761791424] [2023-08-31 20:24:01,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761791424] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:24:01,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:24:01,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 20:24:01,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670313821] [2023-08-31 20:24:01,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:24:01,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 20:24:01,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:24:01,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 20:24:01,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-08-31 20:24:01,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 402 [2023-08-31 20:24:01,559 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 748 transitions, 7040 flow. Second operand has 9 states, 9 states have (on average 174.0) internal successors, (1566), 9 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 20:24:01,559 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:24:01,559 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 402 [2023-08-31 20:24:01,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand