./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/fkp2013-1.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-lit/fkp2013-1.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 ac100ce7c66b3266dc643fb77471441d693f59fe8c56e13ccaa684a73cdda8b0 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 19:20:49,160 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 19:20:49,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 19:20:49,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 19:20:49,191 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 19:20:49,192 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 19:20:49,195 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 19:20:49,200 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 19:20:49,201 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 19:20:49,205 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 19:20:49,206 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 19:20:49,207 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 19:20:49,207 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 19:20:49,209 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 19:20:49,210 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 19:20:49,211 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 19:20:49,212 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 19:20:49,214 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 19:20:49,215 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 19:20:49,218 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 19:20:49,221 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 19:20:49,222 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 19:20:49,223 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 19:20:49,224 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 19:20:49,224 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 19:20:49,226 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 19:20:49,228 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 19:20:49,228 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 19:20:49,229 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 19:20:49,229 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 19:20:49,230 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 19:20:49,230 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 19:20:49,231 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 19:20:49,231 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 19:20:49,232 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 19:20:49,233 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 19:20:49,233 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 19:20:49,233 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 19:20:49,233 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 19:20:49,234 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 19:20:49,234 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 19:20:49,235 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 19:20:49,237 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-04-18 19:20:49,254 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 19:20:49,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 19:20:49,259 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 19:20:49,259 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 19:20:49,260 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 19:20:49,260 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 19:20:49,260 INFO L138 SettingsManager]: * User list type=DISABLED [2022-04-18 19:20:49,260 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-04-18 19:20:49,260 INFO L138 SettingsManager]: * Explicit value domain=true [2022-04-18 19:20:49,261 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-04-18 19:20:49,261 INFO L138 SettingsManager]: * Octagon Domain=false [2022-04-18 19:20:49,261 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-04-18 19:20:49,261 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-04-18 19:20:49,261 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-04-18 19:20:49,262 INFO L138 SettingsManager]: * Interval Domain=false [2022-04-18 19:20:49,262 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-04-18 19:20:49,263 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-04-18 19:20:49,263 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-04-18 19:20:49,263 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 19:20:49,264 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 19:20:49,264 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 19:20:49,264 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 19:20:49,264 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 19:20:49,264 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 19:20:49,264 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 19:20:49,265 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 19:20:49,265 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 19:20:49,265 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 19:20:49,265 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 19:20:49,265 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 19:20:49,265 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 19:20:49,265 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 19:20:49,266 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 19:20:49,266 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 19:20:49,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 19:20:49,266 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 19:20:49,266 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 19:20:49,266 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 19:20:49,266 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-04-18 19:20:49,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 19:20:49,267 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 19:20:49,267 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-18 19:20:49,267 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-18 19:20:49,267 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac100ce7c66b3266dc643fb77471441d693f59fe8c56e13ccaa684a73cdda8b0 [2022-04-18 19:20:49,447 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 19:20:49,471 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 19:20:49,473 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 19:20:49,474 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 19:20:49,474 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 19:20:49,475 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/fkp2013-1.i [2022-04-18 19:20:49,522 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f5915c079/3d02f347d7d04f1b8d599bafebfb9b43/FLAG3ed7817d8 [2022-04-18 19:20:49,922 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 19:20:49,923 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/fkp2013-1.i [2022-04-18 19:20:49,936 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f5915c079/3d02f347d7d04f1b8d599bafebfb9b43/FLAG3ed7817d8 [2022-04-18 19:20:49,950 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f5915c079/3d02f347d7d04f1b8d599bafebfb9b43 [2022-04-18 19:20:49,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 19:20:49,953 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 19:20:49,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 19:20:49,956 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 19:20:49,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 19:20:49,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:20:49" (1/1) ... [2022-04-18 19:20:49,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@113727f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:20:49, skipping insertion in model container [2022-04-18 19:20:49,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:20:49" (1/1) ... [2022-04-18 19:20:49,964 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 19:20:49,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 19:20:50,215 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-lit/fkp2013-1.i[30003,30016] [2022-04-18 19:20:50,233 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 19:20:50,241 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 19:20:50,282 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-lit/fkp2013-1.i[30003,30016] [2022-04-18 19:20:50,286 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 19:20:50,309 INFO L208 MainTranslator]: Completed translation [2022-04-18 19:20:50,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:20:50 WrapperNode [2022-04-18 19:20:50,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 19:20:50,310 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 19:20:50,310 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 19:20:50,311 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 19:20:50,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:20:50" (1/1) ... [2022-04-18 19:20:50,337 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:20:50" (1/1) ... [2022-04-18 19:20:50,354 INFO L137 Inliner]: procedures = 172, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 62 [2022-04-18 19:20:50,355 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 19:20:50,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 19:20:50,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 19:20:50,357 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 19:20:50,362 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:20:50" (1/1) ... [2022-04-18 19:20:50,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:20:50" (1/1) ... [2022-04-18 19:20:50,366 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:20:50" (1/1) ... [2022-04-18 19:20:50,367 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:20:50" (1/1) ... [2022-04-18 19:20:50,380 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:20:50" (1/1) ... [2022-04-18 19:20:50,384 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:20:50" (1/1) ... [2022-04-18 19:20:50,385 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:20:50" (1/1) ... [2022-04-18 19:20:50,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 19:20:50,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 19:20:50,390 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 19:20:50,390 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 19:20:50,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:20:50" (1/1) ... [2022-04-18 19:20:50,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 19:20:50,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 19:20:50,424 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 19:20:50,441 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 19:20:50,451 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-04-18 19:20:50,451 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-04-18 19:20:50,451 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-04-18 19:20:50,452 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-04-18 19:20:50,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 19:20:50,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 19:20:50,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 19:20:50,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 19:20:50,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 19:20:50,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 19:20:50,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 19:20:50,453 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 19:20:50,537 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 19:20:50,538 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 19:20:50,689 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 19:20:50,694 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 19:20:50,694 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-18 19:20:50,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:20:50 BoogieIcfgContainer [2022-04-18 19:20:50,696 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 19:20:50,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 19:20:50,697 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 19:20:50,699 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 19:20:50,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:20:49" (1/3) ... [2022-04-18 19:20:50,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fac88f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:20:50, skipping insertion in model container [2022-04-18 19:20:50,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:20:50" (2/3) ... [2022-04-18 19:20:50,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fac88f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:20:50, skipping insertion in model container [2022-04-18 19:20:50,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:20:50" (3/3) ... [2022-04-18 19:20:50,701 INFO L111 eAbstractionObserver]: Analyzing ICFG fkp2013-1.i [2022-04-18 19:20:50,704 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 19:20:50,704 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 19:20:50,704 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-04-18 19:20:50,705 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 19:20:50,732 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 19:20:50,759 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 19:20:50,764 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 19:20:50,764 INFO L341 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-04-18 19:20:50,771 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 19:20:50,779 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 83 transitions, 176 flow [2022-04-18 19:20:50,781 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 83 transitions, 176 flow [2022-04-18 19:20:50,782 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 87 places, 83 transitions, 176 flow [2022-04-18 19:20:50,808 INFO L129 PetriNetUnfolder]: 3/96 cut-off events. [2022-04-18 19:20:50,808 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 19:20:50,811 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 96 events. 3/96 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 142 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 70. Up to 4 conditions per place. [2022-04-18 19:20:50,812 INFO L116 LiptonReduction]: Number of co-enabled transitions 1700 [2022-04-18 19:20:52,394 INFO L131 LiptonReduction]: Checked pairs total: 2682 [2022-04-18 19:20:52,394 INFO L133 LiptonReduction]: Total number of compositions: 77 [2022-04-18 19:20:52,406 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 24 places, 19 transitions, 48 flow [2022-04-18 19:20:52,433 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 137 states, 124 states have (on average 2.774193548387097) internal successors, (344), 136 states have internal predecessors, (344), 0 states have call successors, (0), 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 19:20:52,437 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 124 states have (on average 2.774193548387097) internal successors, (344), 136 states have internal predecessors, (344), 0 states have call successors, (0), 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 19:20:52,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-04-18 19:20:52,440 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:20:52,440 INFO L499 BasicCegarLoop]: trace histogram [1] [2022-04-18 19:20:52,441 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-04-18 19:20:52,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:20:52,444 INFO L85 PathProgramCache]: Analyzing trace with hash 317, now seen corresponding path program 1 times [2022-04-18 19:20:52,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:20:52,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784455271] [2022-04-18 19:20:52,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:20:52,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:20:52,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:20:52,531 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 19:20:52,531 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:20:52,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784455271] [2022-04-18 19:20:52,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784455271] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:20:52,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:20:52,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-04-18 19:20:52,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158436068] [2022-04-18 19:20:52,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:20:52,536 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 19:20:52,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:20:52,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 19:20:52,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 19:20:52,554 INFO L87 Difference]: Start difference. First operand has 137 states, 124 states have (on average 2.774193548387097) internal successors, (344), 136 states have internal predecessors, (344), 0 states have call successors, (0), 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 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 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 19:20:52,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:20:52,587 INFO L93 Difference]: Finished difference Result 116 states and 260 transitions. [2022-04-18 19:20:52,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 19:20:52,589 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 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 1 [2022-04-18 19:20:52,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:20:52,596 INFO L225 Difference]: With dead ends: 116 [2022-04-18 19:20:52,597 INFO L226 Difference]: Without dead ends: 116 [2022-04-18 19:20:52,597 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 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 19:20:52,600 INFO L913 BasicCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 19:20:52,600 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 19:20:52,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-04-18 19:20:52,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2022-04-18 19:20:52,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 108 states have (on average 2.4074074074074074) internal successors, (260), 115 states have internal predecessors, (260), 0 states have call successors, (0), 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 19:20:52,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 260 transitions. [2022-04-18 19:20:52,634 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 260 transitions. Word has length 1 [2022-04-18 19:20:52,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:20:52,634 INFO L478 AbstractCegarLoop]: Abstraction has 116 states and 260 transitions. [2022-04-18 19:20:52,634 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 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 19:20:52,634 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 260 transitions. [2022-04-18 19:20:52,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-04-18 19:20:52,635 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:20:52,635 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2022-04-18 19:20:52,635 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 19:20:52,636 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-04-18 19:20:52,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:20:52,637 INFO L85 PathProgramCache]: Analyzing trace with hash 9682115, now seen corresponding path program 1 times [2022-04-18 19:20:52,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:20:52,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385718752] [2022-04-18 19:20:52,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:20:52,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:20:52,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:20:52,719 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 19:20:52,719 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:20:52,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385718752] [2022-04-18 19:20:52,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385718752] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:20:52,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:20:52,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 19:20:52,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564935479] [2022-04-18 19:20:52,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:20:52,721 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 19:20:52,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:20:52,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 19:20:52,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:20:52,722 INFO L87 Difference]: Start difference. First operand 116 states and 260 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 19:20:52,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:20:52,763 INFO L93 Difference]: Finished difference Result 131 states and 280 transitions. [2022-04-18 19:20:52,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 19:20:52,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2022-04-18 19:20:52,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:20:52,765 INFO L225 Difference]: With dead ends: 131 [2022-04-18 19:20:52,766 INFO L226 Difference]: Without dead ends: 127 [2022-04-18 19:20:52,766 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:20:52,767 INFO L913 BasicCegarLoop]: 4 mSDtfsCounter, 9 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 19:20:52,767 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 5 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 19:20:52,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-04-18 19:20:52,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 113. [2022-04-18 19:20:52,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 106 states have (on average 2.3773584905660377) internal successors, (252), 112 states have internal predecessors, (252), 0 states have call successors, (0), 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 19:20:52,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 252 transitions. [2022-04-18 19:20:52,773 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 252 transitions. Word has length 4 [2022-04-18 19:20:52,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:20:52,773 INFO L478 AbstractCegarLoop]: Abstraction has 113 states and 252 transitions. [2022-04-18 19:20:52,773 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 19:20:52,774 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 252 transitions. [2022-04-18 19:20:52,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-04-18 19:20:52,774 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:20:52,774 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 19:20:52,774 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 19:20:52,775 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-04-18 19:20:52,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:20:52,775 INFO L85 PathProgramCache]: Analyzing trace with hash 194400362, now seen corresponding path program 1 times [2022-04-18 19:20:52,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:20:52,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916588958] [2022-04-18 19:20:52,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:20:52,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:20:52,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:20:52,814 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 19:20:52,815 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:20:52,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916588958] [2022-04-18 19:20:52,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916588958] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:20:52,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:20:52,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 19:20:52,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515412675] [2022-04-18 19:20:52,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:20:52,818 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 19:20:52,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:20:52,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 19:20:52,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:20:52,819 INFO L87 Difference]: Start difference. First operand 113 states and 252 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 19:20:52,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:20:52,847 INFO L93 Difference]: Finished difference Result 103 states and 218 transitions. [2022-04-18 19:20:52,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 19:20:52,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2022-04-18 19:20:52,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:20:52,849 INFO L225 Difference]: With dead ends: 103 [2022-04-18 19:20:52,849 INFO L226 Difference]: Without dead ends: 100 [2022-04-18 19:20:52,849 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:20:52,851 INFO L913 BasicCegarLoop]: 3 mSDtfsCounter, 6 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 19:20:52,852 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 4 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 19:20:52,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-04-18 19:20:52,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2022-04-18 19:20:52,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 95 states have (on average 2.210526315789474) internal successors, (210), 99 states have internal predecessors, (210), 0 states have call successors, (0), 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 19:20:52,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 210 transitions. [2022-04-18 19:20:52,865 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 210 transitions. Word has length 8 [2022-04-18 19:20:52,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:20:52,865 INFO L478 AbstractCegarLoop]: Abstraction has 100 states and 210 transitions. [2022-04-18 19:20:52,865 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 19:20:52,865 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 210 transitions. [2022-04-18 19:20:52,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-04-18 19:20:52,866 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:20:52,866 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-04-18 19:20:52,867 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 19:20:52,867 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-04-18 19:20:52,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:20:52,867 INFO L85 PathProgramCache]: Analyzing trace with hash 194418457, now seen corresponding path program 1 times [2022-04-18 19:20:52,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:20:52,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248324120] [2022-04-18 19:20:52,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:20:52,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:20:52,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:20:52,896 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 19:20:52,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:20:52,937 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-04-18 19:20:52,951 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 19:20:52,952 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2022-04-18 19:20:52,954 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2022-04-18 19:20:52,954 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2022-04-18 19:20:52,954 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2022-04-18 19:20:52,955 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2022-04-18 19:20:52,955 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 9 remaining) [2022-04-18 19:20:52,955 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2022-04-18 19:20:52,955 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2022-04-18 19:20:52,955 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2022-04-18 19:20:52,955 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 19:20:52,957 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-04-18 19:20:52,958 WARN L232 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 19:20:52,958 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-04-18 19:20:52,977 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 19:20:52,980 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 19:20:52,980 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 19:20:52,981 INFO L341 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-04-18 19:20:52,984 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 19:20:52,985 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 114 transitions, 252 flow [2022-04-18 19:20:52,986 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 114 transitions, 252 flow [2022-04-18 19:20:52,986 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 121 places, 114 transitions, 252 flow [2022-04-18 19:20:53,006 INFO L129 PetriNetUnfolder]: 4/130 cut-off events. [2022-04-18 19:20:53,006 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-04-18 19:20:53,007 INFO L84 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 130 events. 4/130 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 227 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 139. Up to 6 conditions per place. [2022-04-18 19:20:53,009 INFO L116 LiptonReduction]: Number of co-enabled transitions 3130 [2022-04-18 19:20:54,532 INFO L131 LiptonReduction]: Checked pairs total: 7777 [2022-04-18 19:20:54,532 INFO L133 LiptonReduction]: Total number of compositions: 94 [2022-04-18 19:20:54,533 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 36 transitions, 96 flow [2022-04-18 19:20:54,609 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2677 states, 2635 states have (on average 3.386717267552182) internal successors, (8924), 2676 states have internal predecessors, (8924), 0 states have call successors, (0), 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 19:20:54,612 INFO L276 IsEmpty]: Start isEmpty. Operand has 2677 states, 2635 states have (on average 3.386717267552182) internal successors, (8924), 2676 states have internal predecessors, (8924), 0 states have call successors, (0), 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 19:20:54,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-04-18 19:20:54,613 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:20:54,613 INFO L499 BasicCegarLoop]: trace histogram [1] [2022-04-18 19:20:54,613 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-04-18 19:20:54,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:20:54,614 INFO L85 PathProgramCache]: Analyzing trace with hash 555, now seen corresponding path program 1 times [2022-04-18 19:20:54,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:20:54,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693726952] [2022-04-18 19:20:54,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:20:54,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:20:54,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:20:54,620 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 19:20:54,620 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:20:54,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693726952] [2022-04-18 19:20:54,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693726952] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:20:54,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:20:54,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-04-18 19:20:54,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572097329] [2022-04-18 19:20:54,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:20:54,621 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 19:20:54,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:20:54,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 19:20:54,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 19:20:54,626 INFO L87 Difference]: Start difference. First operand has 2677 states, 2635 states have (on average 3.386717267552182) internal successors, (8924), 2676 states have internal predecessors, (8924), 0 states have call successors, (0), 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 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 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 19:20:54,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:20:54,663 INFO L93 Difference]: Finished difference Result 2676 states and 8923 transitions. [2022-04-18 19:20:54,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 19:20:54,664 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 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 1 [2022-04-18 19:20:54,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:20:54,680 INFO L225 Difference]: With dead ends: 2676 [2022-04-18 19:20:54,680 INFO L226 Difference]: Without dead ends: 2676 [2022-04-18 19:20:54,680 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 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 19:20:54,682 INFO L913 BasicCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 19:20:54,683 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 19:20:54,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2676 states. [2022-04-18 19:20:54,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2676 to 2676. [2022-04-18 19:20:54,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2676 states, 2635 states have (on average 3.386337760910816) internal successors, (8923), 2675 states have internal predecessors, (8923), 0 states have call successors, (0), 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 19:20:54,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2676 states to 2676 states and 8923 transitions. [2022-04-18 19:20:54,755 INFO L78 Accepts]: Start accepts. Automaton has 2676 states and 8923 transitions. Word has length 1 [2022-04-18 19:20:54,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:20:54,755 INFO L478 AbstractCegarLoop]: Abstraction has 2676 states and 8923 transitions. [2022-04-18 19:20:54,755 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 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 19:20:54,756 INFO L276 IsEmpty]: Start isEmpty. Operand 2676 states and 8923 transitions. [2022-04-18 19:20:54,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-04-18 19:20:54,756 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:20:54,756 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2022-04-18 19:20:54,756 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-18 19:20:54,756 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-04-18 19:20:54,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:20:54,757 INFO L85 PathProgramCache]: Analyzing trace with hash 17050136, now seen corresponding path program 1 times [2022-04-18 19:20:54,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:20:54,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091702655] [2022-04-18 19:20:54,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:20:54,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:20:54,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:20:54,783 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 19:20:54,784 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:20:54,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091702655] [2022-04-18 19:20:54,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091702655] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:20:54,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:20:54,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 19:20:54,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447718256] [2022-04-18 19:20:54,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:20:54,785 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 19:20:54,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:20:54,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 19:20:54,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:20:54,785 INFO L87 Difference]: Start difference. First operand 2676 states and 8923 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 19:20:54,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:20:54,883 INFO L93 Difference]: Finished difference Result 3280 states and 10352 transitions. [2022-04-18 19:20:54,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 19:20:54,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2022-04-18 19:20:54,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:20:54,900 INFO L225 Difference]: With dead ends: 3280 [2022-04-18 19:20:54,901 INFO L226 Difference]: Without dead ends: 3274 [2022-04-18 19:20:54,901 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:20:54,901 INFO L913 BasicCegarLoop]: 15 mSDtfsCounter, 21 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 19:20:54,902 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 22 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 19:20:54,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3274 states. [2022-04-18 19:20:54,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3274 to 2564. [2022-04-18 19:20:54,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2564 states, 2530 states have (on average 3.2964426877470356) internal successors, (8340), 2563 states have internal predecessors, (8340), 0 states have call successors, (0), 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 19:20:54,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2564 states to 2564 states and 8340 transitions. [2022-04-18 19:20:54,963 INFO L78 Accepts]: Start accepts. Automaton has 2564 states and 8340 transitions. Word has length 4 [2022-04-18 19:20:54,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:20:54,963 INFO L478 AbstractCegarLoop]: Abstraction has 2564 states and 8340 transitions. [2022-04-18 19:20:54,964 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 19:20:54,964 INFO L276 IsEmpty]: Start isEmpty. Operand 2564 states and 8340 transitions. [2022-04-18 19:20:54,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-18 19:20:54,965 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:20:54,965 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 19:20:54,965 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-18 19:20:54,965 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-04-18 19:20:54,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:20:54,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1056844598, now seen corresponding path program 1 times [2022-04-18 19:20:54,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:20:54,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15039881] [2022-04-18 19:20:54,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:20:54,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:20:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:20:54,985 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 19:20:54,985 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:20:54,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15039881] [2022-04-18 19:20:54,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15039881] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:20:54,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:20:54,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 19:20:54,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513349615] [2022-04-18 19:20:54,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:20:54,986 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 19:20:54,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:20:54,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 19:20:54,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:20:54,987 INFO L87 Difference]: Start difference. First operand 2564 states and 8340 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 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 19:20:55,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:20:55,030 INFO L93 Difference]: Finished difference Result 2691 states and 8683 transitions. [2022-04-18 19:20:55,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 19:20:55,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2022-04-18 19:20:55,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:20:55,043 INFO L225 Difference]: With dead ends: 2691 [2022-04-18 19:20:55,043 INFO L226 Difference]: Without dead ends: 2667 [2022-04-18 19:20:55,043 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:20:55,044 INFO L913 BasicCegarLoop]: 17 mSDtfsCounter, 15 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 19:20:55,044 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 24 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 19:20:55,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2667 states. [2022-04-18 19:20:55,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2667 to 2667. [2022-04-18 19:20:55,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2667 states, 2636 states have (on average 3.261001517450683) internal successors, (8596), 2666 states have internal predecessors, (8596), 0 states have call successors, (0), 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 19:20:55,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2667 states to 2667 states and 8596 transitions. [2022-04-18 19:20:55,136 INFO L78 Accepts]: Start accepts. Automaton has 2667 states and 8596 transitions. Word has length 12 [2022-04-18 19:20:55,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:20:55,136 INFO L478 AbstractCegarLoop]: Abstraction has 2667 states and 8596 transitions. [2022-04-18 19:20:55,137 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 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 19:20:55,137 INFO L276 IsEmpty]: Start isEmpty. Operand 2667 states and 8596 transitions. [2022-04-18 19:20:55,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-04-18 19:20:55,138 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:20:55,138 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 19:20:55,138 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-18 19:20:55,138 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2022-04-18 19:20:55,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:20:55,139 INFO L85 PathProgramCache]: Analyzing trace with hash -899188620, now seen corresponding path program 1 times [2022-04-18 19:20:55,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:20:55,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162856262] [2022-04-18 19:20:55,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:20:55,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:20:55,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:20:55,149 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 19:20:55,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:20:55,158 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-04-18 19:20:55,159 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 19:20:55,159 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 12 remaining) [2022-04-18 19:20:55,159 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (10 of 12 remaining) [2022-04-18 19:20:55,159 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (9 of 12 remaining) [2022-04-18 19:20:55,159 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 12 remaining) [2022-04-18 19:20:55,160 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (7 of 12 remaining) [2022-04-18 19:20:55,160 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 12 remaining) [2022-04-18 19:20:55,160 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 12 remaining) [2022-04-18 19:20:55,160 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (4 of 12 remaining) [2022-04-18 19:20:55,160 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (3 of 12 remaining) [2022-04-18 19:20:55,160 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (2 of 12 remaining) [2022-04-18 19:20:55,160 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (1 of 12 remaining) [2022-04-18 19:20:55,161 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 12 remaining) [2022-04-18 19:20:55,161 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-18 19:20:55,161 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-04-18 19:20:55,165 INFO L227 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2022-04-18 19:20:55,165 INFO L177 ceAbstractionStarter]: Computing trace abstraction results [2022-04-18 19:20:55,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:20:55 BasicIcfg [2022-04-18 19:20:55,189 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-18 19:20:55,190 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-04-18 19:20:55,190 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-04-18 19:20:55,190 INFO L275 PluginConnector]: Witness Printer initialized [2022-04-18 19:20:55,190 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:20:50" (3/4) ... [2022-04-18 19:20:55,192 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-04-18 19:20:55,192 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-04-18 19:20:55,193 INFO L158 Benchmark]: Toolchain (without parser) took 5239.75ms. Allocated memory was 144.7MB in the beginning and 216.0MB in the end (delta: 71.3MB). Free memory was 115.8MB in the beginning and 135.9MB in the end (delta: -20.1MB). Peak memory consumption was 53.6MB. Max. memory is 16.1GB. [2022-04-18 19:20:55,193 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 92.3MB. Free memory was 49.0MB in the beginning and 49.0MB in the end (delta: 18.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-04-18 19:20:55,193 INFO L158 Benchmark]: CACSL2BoogieTranslator took 354.21ms. Allocated memory is still 144.7MB. Free memory was 115.8MB in the beginning and 111.1MB in the end (delta: 4.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-04-18 19:20:55,193 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.97ms. Allocated memory is still 144.7MB. Free memory was 111.1MB in the beginning and 109.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-04-18 19:20:55,194 INFO L158 Benchmark]: Boogie Preprocessor took 33.05ms. Allocated memory is still 144.7MB. Free memory was 109.0MB in the beginning and 107.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-04-18 19:20:55,194 INFO L158 Benchmark]: RCFGBuilder took 306.40ms. Allocated memory is still 144.7MB. Free memory was 107.7MB in the beginning and 96.2MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-04-18 19:20:55,194 INFO L158 Benchmark]: TraceAbstraction took 4492.48ms. Allocated memory was 144.7MB in the beginning and 216.0MB in the end (delta: 71.3MB). Free memory was 95.5MB in the beginning and 135.9MB in the end (delta: -40.4MB). Peak memory consumption was 34.1MB. Max. memory is 16.1GB. [2022-04-18 19:20:55,194 INFO L158 Benchmark]: Witness Printer took 2.58ms. Allocated memory is still 216.0MB. Free memory is still 135.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-04-18 19:20:55,195 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 92.3MB. Free memory was 49.0MB in the beginning and 49.0MB in the end (delta: 18.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 354.21ms. Allocated memory is still 144.7MB. Free memory was 115.8MB in the beginning and 111.1MB in the end (delta: 4.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.97ms. Allocated memory is still 144.7MB. Free memory was 111.1MB in the beginning and 109.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.05ms. Allocated memory is still 144.7MB. Free memory was 109.0MB in the beginning and 107.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 306.40ms. Allocated memory is still 144.7MB. Free memory was 107.7MB in the beginning and 96.2MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 4492.48ms. Allocated memory was 144.7MB in the beginning and 216.0MB in the end (delta: 71.3MB). Free memory was 95.5MB in the beginning and 135.9MB in the end (delta: -40.4MB). Peak memory consumption was 34.1MB. Max. memory is 16.1GB. * Witness Printer took 2.58ms. Allocated memory is still 216.0MB. Free memory is still 135.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.6s, 87 PlacesBefore, 24 PlacesAfterwards, 83 TransitionsBefore, 19 TransitionsAfterwards, 1700 CoEnabledTransitionPairs, 7 FixpointIterations, 30 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 77 TotalNumberOfCompositions, 2682 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2021, positive: 1933, positive conditional: 0, positive unconditional: 1933, negative: 88, negative conditional: 0, negative unconditional: 88, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1239, positive: 1210, positive conditional: 0, positive unconditional: 1210, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1239, positive: 1190, positive conditional: 0, positive unconditional: 1190, negative: 49, negative conditional: 0, negative unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 49, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 53, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2021, positive: 723, positive conditional: 0, positive unconditional: 723, negative: 59, negative conditional: 0, negative unconditional: 59, unknown: 1239, unknown conditional: 0, unknown unconditional: 1239] , Statistics on independence cache: Total cache size (in pairs): 64, Positive cache size: 59, Positive conditional cache size: 0, Positive unconditional cache size: 59, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.5s, 121 PlacesBefore, 46 PlacesAfterwards, 114 TransitionsBefore, 36 TransitionsAfterwards, 3130 CoEnabledTransitionPairs, 6 FixpointIterations, 47 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 3 ConcurrentYvCompositions, 3 ChoiceCompositions, 94 TotalNumberOfCompositions, 7777 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3805, positive: 3590, positive conditional: 0, positive unconditional: 3590, negative: 215, negative conditional: 0, negative unconditional: 215, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1915, positive: 1868, positive conditional: 0, positive unconditional: 1868, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1915, positive: 1855, positive conditional: 0, positive unconditional: 1855, negative: 60, negative conditional: 0, negative unconditional: 60, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 60, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 54, positive: 27, positive conditional: 0, positive unconditional: 27, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3805, positive: 1722, positive conditional: 0, positive unconditional: 1722, negative: 168, negative conditional: 0, negative unconditional: 168, unknown: 1915, unknown conditional: 0, unknown unconditional: 1915] , Statistics on independence cache: Total cache size (in pairs): 223, Positive cache size: 198, Positive conditional cache size: 0, Positive unconditional cache size: 198, Negative cache size: 25, Negative conditional cache size: 0, Negative unconditional cache size: 25 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - DataRaceFoundResult [Line: 699]: Data race detected Data race detected The following path leads to a data race: [L697] 0 volatile int x; [L709] 0 pthread_t t1, t2; [L710] 0 int i; [L711] 0 x = 0 [L712] FCALL, FORK 0 pthread_create(&t1, 0, thr1, 0) VAL [\old(argc)=49, argc=49, argv={51:50}, argv={51:50}, pthread_create(&t1, 0, thr1, 0)=0, t1={3:0}, t2={5:0}, x=0] [L699] 1 x < 50 VAL [arg={0:0}, arg={0:0}, x=0] [L713] 0 i = 0 VAL [\old(argc)=49, argc=49, argv={51:50}, argv={51:50}, i=0, t1={3:0}, t2={5:0}, x=0] [L713] COND TRUE 0 i < 50 [L714] FCALL, FORK 0 pthread_create(&t2, 0, thr2, 0) VAL [\old(argc)=49, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, i=0, pthread_create(&t2, 0, thr2, 0)=1, t1={3:0}, t2={5:0}, x=0] [L703] 2 int t; [L704] 2 t = x VAL [arg={0:0}, arg={0:0}, t=0, x=0] [L705] 2 x = t + 1 VAL [arg={0:0}, arg={0:0}, t=0, x=1, x = t + 1=52] [L699] 1 x < 50 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t=0, x=1, x = t + 1=52] Now there is a data race on ~x~0 between C: x = t + 1 [705] and C: x < 50 [699] - UnprovableResult [Line: 704]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 705]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 711]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 712]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 113 locations, 9 error locations. Started 1 CEGAR loops. OverallTime: 2.2s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 76 IncrementalHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 10 mSDtfsCounter, 76 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=137occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 14 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 14 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 7 procedures, 143 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 2.2s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 36 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 36 mSDsluCounter, 61 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 29 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 122 IncrementalHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 47 mSDtfsCounter, 122 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2677occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 3 MinimizatonAttempts, 710 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 18 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-04-18 19:20:55,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE