./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/10_fmaxsym_cas.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version efd9311c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/TaipanReach.xml -i /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/10_fmaxsym_cas.i -s /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UTaipan-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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a11d0cba01cb66911cac56797cb36d325dc008752ffb55c25c965bd0644c21c3 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 19:04:39,330 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 19:04:39,332 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 19:04:39,357 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 19:04:39,358 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 19:04:39,359 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 19:04:39,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 19:04:39,361 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 19:04:39,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 19:04:39,363 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 19:04:39,364 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 19:04:39,365 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 19:04:39,366 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 19:04:39,369 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 19:04:39,370 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 19:04:39,372 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 19:04:39,373 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 19:04:39,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 19:04:39,377 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 19:04:39,383 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 19:04:39,384 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 19:04:39,388 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 19:04:39,388 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 19:04:39,389 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 19:04:39,390 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 19:04:39,392 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 19:04:39,395 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 19:04:39,395 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 19:04:39,396 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 19:04:39,396 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 19:04:39,398 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 19:04:39,398 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 19:04:39,399 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 19:04:39,400 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 19:04:39,401 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 19:04:39,402 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 19:04:39,402 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 19:04:39,403 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 19:04:39,403 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 19:04:39,403 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 19:04:39,404 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 19:04:39,405 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 19:04:39,407 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-04-18 19:04:39,442 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 19:04:39,442 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 19:04:39,443 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 19:04:39,443 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 19:04:39,443 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 19:04:39,444 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 19:04:39,444 INFO L138 SettingsManager]: * User list type=DISABLED [2022-04-18 19:04:39,444 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-04-18 19:04:39,444 INFO L138 SettingsManager]: * Explicit value domain=true [2022-04-18 19:04:39,445 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-04-18 19:04:39,445 INFO L138 SettingsManager]: * Octagon Domain=false [2022-04-18 19:04:39,445 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-04-18 19:04:39,446 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-04-18 19:04:39,446 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-04-18 19:04:39,446 INFO L138 SettingsManager]: * Interval Domain=false [2022-04-18 19:04:39,447 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-04-18 19:04:39,447 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-04-18 19:04:39,447 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-04-18 19:04:39,448 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 19:04:39,449 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 19:04:39,449 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 19:04:39,449 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 19:04:39,449 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 19:04:39,449 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 19:04:39,450 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 19:04:39,450 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 19:04:39,450 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 19:04:39,450 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 19:04:39,450 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 19:04:39,451 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 19:04:39,451 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 19:04:39,451 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 19:04:39,451 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 19:04:39,451 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 19:04:39,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 19:04:39,452 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 19:04:39,452 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 19:04:39,452 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 19:04:39,452 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-04-18 19:04:39,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 19:04:39,453 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 19:04:39,453 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-18 19:04:39,453 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-18 19:04:39,453 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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/UTaipan-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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a11d0cba01cb66911cac56797cb36d325dc008752ffb55c25c965bd0644c21c3 [2022-04-18 19:04:39,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 19:04:39,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 19:04:39,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 19:04:39,700 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 19:04:39,701 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 19:04:39,702 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/10_fmaxsym_cas.i [2022-04-18 19:04:39,757 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/50de8553a/02970e09f72746ba84f89f71efb55a6a/FLAGdb272a103 [2022-04-18 19:04:40,173 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 19:04:40,176 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/10_fmaxsym_cas.i [2022-04-18 19:04:40,189 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/50de8553a/02970e09f72746ba84f89f71efb55a6a/FLAGdb272a103 [2022-04-18 19:04:40,201 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/50de8553a/02970e09f72746ba84f89f71efb55a6a [2022-04-18 19:04:40,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 19:04:40,204 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 19:04:40,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 19:04:40,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 19:04:40,208 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 19:04:40,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:04:40" (1/1) ... [2022-04-18 19:04:40,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54de0ec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:04:40, skipping insertion in model container [2022-04-18 19:04:40,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:04:40" (1/1) ... [2022-04-18 19:04:40,229 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 19:04:40,260 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 19:04:40,521 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/10_fmaxsym_cas.i[30467,30480] [2022-04-18 19:04:40,525 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 19:04:40,531 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 19:04:40,563 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/10_fmaxsym_cas.i[30467,30480] [2022-04-18 19:04:40,570 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 19:04:40,593 INFO L208 MainTranslator]: Completed translation [2022-04-18 19:04:40,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:04:40 WrapperNode [2022-04-18 19:04:40,594 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 19:04:40,595 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 19:04:40,595 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 19:04:40,595 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 19:04:40,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:04:40" (1/1) ... [2022-04-18 19:04:40,621 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:04:40" (1/1) ... [2022-04-18 19:04:40,638 INFO L137 Inliner]: procedures = 170, calls = 32, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 142 [2022-04-18 19:04:40,639 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 19:04:40,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 19:04:40,639 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 19:04:40,639 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 19:04:40,644 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:04:40" (1/1) ... [2022-04-18 19:04:40,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:04:40" (1/1) ... [2022-04-18 19:04:40,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:04:40" (1/1) ... [2022-04-18 19:04:40,652 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:04:40" (1/1) ... [2022-04-18 19:04:40,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:04:40" (1/1) ... [2022-04-18 19:04:40,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:04:40" (1/1) ... [2022-04-18 19:04:40,672 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:04:40" (1/1) ... [2022-04-18 19:04:40,676 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 19:04:40,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 19:04:40,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 19:04:40,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 19:04:40,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:04:40" (1/1) ... [2022-04-18 19:04:40,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 19:04:40,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 19:04:40,699 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-18 19:04:40,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-18 19:04:40,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 19:04:40,722 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-04-18 19:04:40,722 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-04-18 19:04:40,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 19:04:40,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 19:04:40,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 19:04:40,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 19:04:40,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 19:04:40,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 19:04:40,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 19:04:40,724 WARN L208 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-04-18 19:04:40,796 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 19:04:40,798 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 19:04:41,025 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 19:04:41,098 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 19:04:41,098 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-04-18 19:04:41,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:04:41 BoogieIcfgContainer [2022-04-18 19:04:41,100 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 19:04:41,101 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 19:04:41,101 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 19:04:41,103 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 19:04:41,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:04:40" (1/3) ... [2022-04-18 19:04:41,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@417afa27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:04:41, skipping insertion in model container [2022-04-18 19:04:41,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:04:40" (2/3) ... [2022-04-18 19:04:41,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@417afa27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:04:41, skipping insertion in model container [2022-04-18 19:04:41,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:04:41" (3/3) ... [2022-04-18 19:04:41,106 INFO L111 eAbstractionObserver]: Analyzing ICFG 10_fmaxsym_cas.i [2022-04-18 19:04:41,109 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 19:04:41,109 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 19:04:41,109 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-04-18 19:04:41,109 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 19:04:41,187 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 19:04:41,222 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 19:04:41,228 INFO L340 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=FINITE_AUTOMATA, 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 [2022-04-18 19:04:41,228 INFO L341 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-04-18 19:04:41,238 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 19:04:41,248 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 123 transitions, 251 flow [2022-04-18 19:04:41,251 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 123 transitions, 251 flow [2022-04-18 19:04:41,252 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 117 places, 123 transitions, 251 flow [2022-04-18 19:04:41,309 INFO L129 PetriNetUnfolder]: 10/134 cut-off events. [2022-04-18 19:04:41,309 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 19:04:41,312 INFO L84 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 134 events. 10/134 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 138 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 97. Up to 4 conditions per place. [2022-04-18 19:04:41,316 INFO L116 LiptonReduction]: Number of co-enabled transitions 2352 [2022-04-18 19:05:10,632 INFO L131 LiptonReduction]: Checked pairs total: 2433 [2022-04-18 19:05:10,632 INFO L133 LiptonReduction]: Total number of compositions: 136 [2022-04-18 19:05:10,638 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 24 places, 25 transitions, 55 flow [2022-04-18 19:05:10,662 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 82 states, 65 states have (on average 2.4615384615384617) internal successors, (160), 81 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:05:10,665 INFO L276 IsEmpty]: Start isEmpty. Operand has 82 states, 65 states have (on average 2.4615384615384617) internal successors, (160), 81 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:05:10,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-04-18 19:05:10,668 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:05:10,669 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-04-18 19:05:10,669 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2022-04-18 19:05:10,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:05:10,674 INFO L85 PathProgramCache]: Analyzing trace with hash 605049561, now seen corresponding path program 1 times [2022-04-18 19:05:10,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:05:10,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78721723] [2022-04-18 19:05:10,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:05:10,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:05:10,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:05:10,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 19:05:10,793 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:05:10,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78721723] [2022-04-18 19:05:10,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78721723] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:05:10,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:05:10,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-04-18 19:05:10,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22771565] [2022-04-18 19:05:10,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:05:10,797 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 19:05:10,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:05:10,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 19:05:10,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 19:05:10,813 INFO L87 Difference]: Start difference. First operand has 82 states, 65 states have (on average 2.4615384615384617) internal successors, (160), 81 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 5.0) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:05:10,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:05:10,947 INFO L93 Difference]: Finished difference Result 39 states and 74 transitions. [2022-04-18 19:05:10,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 19:05:10,949 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 5.0) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-04-18 19:05:10,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:05:10,957 INFO L225 Difference]: With dead ends: 39 [2022-04-18 19:05:10,957 INFO L226 Difference]: Without dead ends: 39 [2022-04-18 19:05:10,958 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 19:05:10,959 INFO L913 BasicCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-18 19:05:10,960 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-18 19:05:10,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-04-18 19:05:10,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-04-18 19:05:10,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 37 states have (on average 2.0) internal successors, (74), 38 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:05:10,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 74 transitions. [2022-04-18 19:05:10,985 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 74 transitions. Word has length 5 [2022-04-18 19:05:10,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:05:10,985 INFO L478 AbstractCegarLoop]: Abstraction has 39 states and 74 transitions. [2022-04-18 19:05:10,986 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 5.0) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:05:10,986 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 74 transitions. [2022-04-18 19:05:10,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-04-18 19:05:10,987 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:05:10,987 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-04-18 19:05:10,987 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 19:05:10,988 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2022-04-18 19:05:10,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:05:10,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1576569530, now seen corresponding path program 1 times [2022-04-18 19:05:10,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:05:10,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678576567] [2022-04-18 19:05:10,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:05:10,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:05:11,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:05:11,027 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 19:05:11,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:05:11,053 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-04-18 19:05:11,053 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 19:05:11,054 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-04-18 19:05:11,055 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2022-04-18 19:05:11,056 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2022-04-18 19:05:11,056 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2022-04-18 19:05:11,056 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2022-04-18 19:05:11,056 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2022-04-18 19:05:11,057 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2022-04-18 19:05:11,057 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2022-04-18 19:05:11,057 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2022-04-18 19:05:11,057 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2022-04-18 19:05:11,057 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2022-04-18 19:05:11,057 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2022-04-18 19:05:11,058 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2022-04-18 19:05:11,058 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2022-04-18 19:05:11,058 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2022-04-18 19:05:11,058 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2022-04-18 19:05:11,058 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2022-04-18 19:05:11,059 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 19:05:11,060 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1] [2022-04-18 19:05:11,061 WARN L232 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 19:05:11,061 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-04-18 19:05:11,098 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 19:05:11,105 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 19:05:11,109 INFO L340 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=FINITE_AUTOMATA, 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 [2022-04-18 19:05:11,109 INFO L341 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-04-18 19:05:11,111 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 19:05:11,113 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 196 places, 208 transitions, 428 flow [2022-04-18 19:05:11,113 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 196 places, 208 transitions, 428 flow [2022-04-18 19:05:11,113 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 196 places, 208 transitions, 428 flow [2022-04-18 19:05:11,169 INFO L129 PetriNetUnfolder]: 19/232 cut-off events. [2022-04-18 19:05:11,170 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-04-18 19:05:11,174 INFO L84 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 232 events. 19/232 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 503 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 181. Up to 6 conditions per place. [2022-04-18 19:05:11,203 INFO L116 LiptonReduction]: Number of co-enabled transitions 18984 [2022-04-18 19:08:12,350 INFO L131 LiptonReduction]: Checked pairs total: 71694 [2022-04-18 19:08:12,350 INFO L133 LiptonReduction]: Total number of compositions: 218 [2022-04-18 19:08:12,351 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 81 places, 85 transitions, 182 flow [2022-04-18 19:08:12,536 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 7526 states, 7357 states have (on average 3.080467581894794) internal successors, (22663), 7525 states have internal predecessors, (22663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:08:12,561 INFO L276 IsEmpty]: Start isEmpty. Operand has 7526 states, 7357 states have (on average 3.080467581894794) internal successors, (22663), 7525 states have internal predecessors, (22663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:08:12,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-04-18 19:08:12,563 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:08:12,563 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 19:08:12,563 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2022-04-18 19:08:12,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:08:12,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1571253011, now seen corresponding path program 1 times [2022-04-18 19:08:12,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:08:12,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372497207] [2022-04-18 19:08:12,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:08:12,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:08:12,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:08:12,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 19:08:12,985 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:08:12,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372497207] [2022-04-18 19:08:12,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372497207] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:08:12,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:08:12,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 19:08:12,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434660353] [2022-04-18 19:08:12,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:08:12,986 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 19:08:12,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:08:12,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 19:08:12,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 19:08:13,000 INFO L87 Difference]: Start difference. First operand has 7526 states, 7357 states have (on average 3.080467581894794) internal successors, (22663), 7525 states have internal predecessors, (22663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:08:16,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:08:16,427 INFO L93 Difference]: Finished difference Result 7749 states and 22518 transitions. [2022-04-18 19:08:16,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 19:08:16,427 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-04-18 19:08:16,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:08:16,521 INFO L225 Difference]: With dead ends: 7749 [2022-04-18 19:08:16,527 INFO L226 Difference]: Without dead ends: 7749 [2022-04-18 19:08:16,527 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 19:08:16,530 INFO L913 BasicCegarLoop]: 50 mSDtfsCounter, 90 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-04-18 19:08:16,545 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 80 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-04-18 19:08:16,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7749 states. [2022-04-18 19:08:16,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7749 to 5523. [2022-04-18 19:08:16,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5523 states, 5498 states have (on average 2.9157875591124047) internal successors, (16031), 5522 states have internal predecessors, (16031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:08:16,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5523 states to 5523 states and 16031 transitions. [2022-04-18 19:08:16,826 INFO L78 Accepts]: Start accepts. Automaton has 5523 states and 16031 transitions. Word has length 10 [2022-04-18 19:08:16,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:08:16,827 INFO L478 AbstractCegarLoop]: Abstraction has 5523 states and 16031 transitions. [2022-04-18 19:08:16,827 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:08:16,827 INFO L276 IsEmpty]: Start isEmpty. Operand 5523 states and 16031 transitions. [2022-04-18 19:08:16,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-18 19:08:16,829 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:08:16,830 INFO L499 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-04-18 19:08:16,830 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 19:08:16,830 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2022-04-18 19:08:16,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:08:16,832 INFO L85 PathProgramCache]: Analyzing trace with hash -2014222869, now seen corresponding path program 1 times [2022-04-18 19:08:16,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:08:16,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040979171] [2022-04-18 19:08:16,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:08:16,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:08:16,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:08:16,853 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 19:08:16,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:08:16,871 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-04-18 19:08:16,871 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 19:08:16,872 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2022-04-18 19:08:16,872 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2022-04-18 19:08:16,872 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2022-04-18 19:08:16,872 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2022-04-18 19:08:16,872 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2022-04-18 19:08:16,872 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2022-04-18 19:08:16,873 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2022-04-18 19:08:16,873 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2022-04-18 19:08:16,873 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2022-04-18 19:08:16,873 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2022-04-18 19:08:16,873 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2022-04-18 19:08:16,873 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2022-04-18 19:08:16,873 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2022-04-18 19:08:16,874 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2022-04-18 19:08:16,874 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2022-04-18 19:08:16,874 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2022-04-18 19:08:16,874 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2022-04-18 19:08:16,892 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2022-04-18 19:08:16,892 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2022-04-18 19:08:16,892 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2022-04-18 19:08:16,894 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2022-04-18 19:08:16,894 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2022-04-18 19:08:16,895 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2022-04-18 19:08:16,895 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2022-04-18 19:08:16,895 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2022-04-18 19:08:16,895 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 19:08:16,895 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1] [2022-04-18 19:08:16,896 WARN L232 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 19:08:16,896 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-04-18 19:08:16,953 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 19:08:16,956 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 19:08:16,958 INFO L340 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=FINITE_AUTOMATA, 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 [2022-04-18 19:08:16,958 INFO L341 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2022-04-18 19:08:16,961 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 19:08:16,961 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 275 places, 293 transitions, 607 flow [2022-04-18 19:08:16,961 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 275 places, 293 transitions, 607 flow [2022-04-18 19:08:16,961 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 275 places, 293 transitions, 607 flow [2022-04-18 19:08:17,116 INFO L129 PetriNetUnfolder]: 28/330 cut-off events. [2022-04-18 19:08:17,117 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-04-18 19:08:17,120 INFO L84 FinitePrefix]: Finished finitePrefix Result has 346 conditions, 330 events. 28/330 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 989 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 265. Up to 8 conditions per place. [2022-04-18 19:08:17,135 INFO L116 LiptonReduction]: Number of co-enabled transitions 49896 [2022-04-18 19:16:20,984 INFO L131 LiptonReduction]: Checked pairs total: 200864 [2022-04-18 19:16:20,984 INFO L133 LiptonReduction]: Total number of compositions: 304 [2022-04-18 19:16:20,986 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 119 places, 124 transitions, 269 flow [2022-04-18 19:16:27,941 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 270900 states, 269355 states have (on average 4.0893764734272615) internal successors, (1101494), 270899 states have internal predecessors, (1101494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:16:28,466 INFO L276 IsEmpty]: Start isEmpty. Operand has 270900 states, 269355 states have (on average 4.0893764734272615) internal successors, (1101494), 270899 states have internal predecessors, (1101494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:16:28,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-04-18 19:16:28,468 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:16:28,468 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 19:16:28,468 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-04-18 19:16:28,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:16:28,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1886568089, now seen corresponding path program 1 times [2022-04-18 19:16:28,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:16:28,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907079783] [2022-04-18 19:16:28,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:16:28,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:16:28,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:16:28,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 19:16:28,873 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:16:28,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907079783] [2022-04-18 19:16:28,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907079783] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:16:28,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:16:28,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 19:16:28,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820615668] [2022-04-18 19:16:28,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:16:28,873 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 19:16:28,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:16:28,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 19:16:28,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 19:16:29,280 INFO L87 Difference]: Start difference. First operand has 270900 states, 269355 states have (on average 4.0893764734272615) internal successors, (1101494), 270899 states have internal predecessors, (1101494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:16:39,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:16:39,120 INFO L93 Difference]: Finished difference Result 249250 states and 988506 transitions. [2022-04-18 19:16:39,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 19:16:39,121 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-04-18 19:16:39,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:16:42,078 INFO L225 Difference]: With dead ends: 249250 [2022-04-18 19:16:42,079 INFO L226 Difference]: Without dead ends: 249250 [2022-04-18 19:16:42,079 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 19:16:42,080 INFO L913 BasicCegarLoop]: 84 mSDtfsCounter, 168 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-04-18 19:16:42,080 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 128 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-04-18 19:16:42,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249250 states. [2022-04-18 19:16:49,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249250 to 178018. [2022-04-18 19:16:49,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178018 states, 177893 states have (on average 3.9647091228997207) internal successors, (705294), 178017 states have internal predecessors, (705294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:16:51,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178018 states to 178018 states and 705294 transitions. [2022-04-18 19:16:51,488 INFO L78 Accepts]: Start accepts. Automaton has 178018 states and 705294 transitions. Word has length 10 [2022-04-18 19:16:51,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:16:51,489 INFO L478 AbstractCegarLoop]: Abstraction has 178018 states and 705294 transitions. [2022-04-18 19:16:51,489 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:16:51,489 INFO L276 IsEmpty]: Start isEmpty. Operand 178018 states and 705294 transitions. [2022-04-18 19:16:51,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-04-18 19:16:51,494 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:16:51,494 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 19:16:51,494 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-18 19:16:51,494 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-04-18 19:16:51,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:16:51,495 INFO L85 PathProgramCache]: Analyzing trace with hash 2075561968, now seen corresponding path program 1 times [2022-04-18 19:16:51,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:16:51,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67108905] [2022-04-18 19:16:51,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:16:51,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:16:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:16:51,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-18 19:16:51,925 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:16:51,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67108905] [2022-04-18 19:16:51,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67108905] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:16:51,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:16:51,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 19:16:51,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944205435] [2022-04-18 19:16:51,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:16:51,926 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 19:16:51,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:16:51,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 19:16:51,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 19:16:51,927 INFO L87 Difference]: Start difference. First operand 178018 states and 705294 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:17:02,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:17:02,003 INFO L93 Difference]: Finished difference Result 286808 states and 1135286 transitions. [2022-04-18 19:17:02,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 19:17:02,004 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-04-18 19:17:02,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:17:04,687 INFO L225 Difference]: With dead ends: 286808 [2022-04-18 19:17:04,687 INFO L226 Difference]: Without dead ends: 286808 [2022-04-18 19:17:04,688 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 19:17:04,688 INFO L913 BasicCegarLoop]: 81 mSDtfsCounter, 166 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-04-18 19:17:04,688 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 121 Invalid, 937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-04-18 19:17:05,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286808 states. [2022-04-18 19:17:12,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286808 to 200708. [2022-04-18 19:17:13,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200708 states, 200583 states have (on average 3.957842887981534) internal successors, (793876), 200707 states have internal predecessors, (793876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)