./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longest-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-ext/26_stack_cas_longest-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 8c0827ac193c1e2b03d5ccf1e60b62c7d6ff1b4feade2c409a6c7ca2cebf9412 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 19:13:46,189 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 19:13:46,190 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 19:13:46,208 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 19:13:46,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 19:13:46,210 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 19:13:46,214 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 19:13:46,217 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 19:13:46,219 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 19:13:46,219 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 19:13:46,220 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 19:13:46,221 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 19:13:46,222 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 19:13:46,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 19:13:46,225 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 19:13:46,226 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 19:13:46,227 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 19:13:46,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 19:13:46,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 19:13:46,235 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 19:13:46,238 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 19:13:46,239 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 19:13:46,240 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 19:13:46,241 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 19:13:46,241 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 19:13:46,243 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 19:13:46,244 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 19:13:46,245 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 19:13:46,245 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 19:13:46,246 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 19:13:46,246 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 19:13:46,247 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 19:13:46,248 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 19:13:46,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 19:13:46,249 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 19:13:46,249 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 19:13:46,249 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 19:13:46,250 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 19:13:46,250 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 19:13:46,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 19:13:46,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 19:13:46,251 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 19:13:46,253 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-04-18 19:13:46,279 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 19:13:46,279 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 19:13:46,279 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 19:13:46,280 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 19:13:46,280 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 19:13:46,280 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 19:13:46,280 INFO L138 SettingsManager]: * User list type=DISABLED [2022-04-18 19:13:46,281 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-04-18 19:13:46,281 INFO L138 SettingsManager]: * Explicit value domain=true [2022-04-18 19:13:46,281 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-04-18 19:13:46,281 INFO L138 SettingsManager]: * Octagon Domain=false [2022-04-18 19:13:46,281 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-04-18 19:13:46,281 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-04-18 19:13:46,281 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-04-18 19:13:46,281 INFO L138 SettingsManager]: * Interval Domain=false [2022-04-18 19:13:46,282 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-04-18 19:13:46,282 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-04-18 19:13:46,282 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-04-18 19:13:46,282 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 19:13:46,282 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 19:13:46,283 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 19:13:46,283 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 19:13:46,283 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 19:13:46,283 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 19:13:46,283 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 19:13:46,283 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 19:13:46,283 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 19:13:46,283 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 19:13:46,284 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 19:13:46,284 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 19:13:46,284 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 19:13:46,284 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 19:13:46,284 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 19:13:46,284 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 19:13:46,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 19:13:46,285 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 19:13:46,285 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 19:13:46,285 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 19:13:46,285 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-04-18 19:13:46,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 19:13:46,285 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 19:13:46,285 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-18 19:13:46,286 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-18 19:13:46,286 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c0827ac193c1e2b03d5ccf1e60b62c7d6ff1b4feade2c409a6c7ca2cebf9412 [2022-04-18 19:13:46,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 19:13:46,483 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 19:13:46,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 19:13:46,486 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 19:13:46,487 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 19:13:46,488 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longest-1.i [2022-04-18 19:13:46,543 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0aeab1dd8/569b5d41f378451aab2b6ffbc160a2c9/FLAGf81f5e95c [2022-04-18 19:13:46,922 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 19:13:46,923 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longest-1.i [2022-04-18 19:13:46,936 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0aeab1dd8/569b5d41f378451aab2b6ffbc160a2c9/FLAGf81f5e95c [2022-04-18 19:13:46,955 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0aeab1dd8/569b5d41f378451aab2b6ffbc160a2c9 [2022-04-18 19:13:46,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 19:13:46,958 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 19:13:46,960 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 19:13:46,960 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 19:13:46,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 19:13:46,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:13:46" (1/1) ... [2022-04-18 19:13:46,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d9491f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:13:46, skipping insertion in model container [2022-04-18 19:13:46,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:13:46" (1/1) ... [2022-04-18 19:13:46,968 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 19:13:47,008 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 19:13:47,251 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longest-1.i[31167,31180] [2022-04-18 19:13:47,257 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 19:13:47,264 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 19:13:47,318 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longest-1.i[31167,31180] [2022-04-18 19:13:47,320 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 19:13:47,343 INFO L208 MainTranslator]: Completed translation [2022-04-18 19:13:47,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:13:47 WrapperNode [2022-04-18 19:13:47,344 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 19:13:47,345 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 19:13:47,345 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 19:13:47,345 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 19:13:47,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:13:47" (1/1) ... [2022-04-18 19:13:47,371 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:13:47" (1/1) ... [2022-04-18 19:13:47,400 INFO L137 Inliner]: procedures = 177, calls = 47, calls flagged for inlining = 16, calls inlined = 19, statements flattened = 319 [2022-04-18 19:13:47,400 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 19:13:47,401 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 19:13:47,401 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 19:13:47,401 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 19:13:47,408 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:13:47" (1/1) ... [2022-04-18 19:13:47,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:13:47" (1/1) ... [2022-04-18 19:13:47,412 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:13:47" (1/1) ... [2022-04-18 19:13:47,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:13:47" (1/1) ... [2022-04-18 19:13:47,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:13:47" (1/1) ... [2022-04-18 19:13:47,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:13:47" (1/1) ... [2022-04-18 19:13:47,429 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:13:47" (1/1) ... [2022-04-18 19:13:47,431 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 19:13:47,432 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 19:13:47,432 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 19:13:47,432 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 19:13:47,433 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:13:47" (1/1) ... [2022-04-18 19:13:47,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 19:13:47,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 19:13:47,454 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 19:13:47,465 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 19:13:47,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 19:13:47,488 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-04-18 19:13:47,488 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-04-18 19:13:47,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 19:13:47,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 19:13:47,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 19:13:47,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 19:13:47,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 19:13:47,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 19:13:47,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 19:13:47,490 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 19:13:47,572 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 19:13:47,573 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 19:13:48,028 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 19:13:48,218 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 19:13:48,219 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-04-18 19:13:48,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:13:48 BoogieIcfgContainer [2022-04-18 19:13:48,221 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 19:13:48,224 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 19:13:48,224 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 19:13:48,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 19:13:48,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:13:46" (1/3) ... [2022-04-18 19:13:48,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c747170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:13:48, skipping insertion in model container [2022-04-18 19:13:48,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:13:47" (2/3) ... [2022-04-18 19:13:48,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c747170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:13:48, skipping insertion in model container [2022-04-18 19:13:48,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:13:48" (3/3) ... [2022-04-18 19:13:48,229 INFO L111 eAbstractionObserver]: Analyzing ICFG 26_stack_cas_longest-1.i [2022-04-18 19:13:48,236 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 19:13:48,236 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 19:13:48,236 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-04-18 19:13:48,236 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 19:13:48,311 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 19:13:48,356 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 19:13:48,361 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 19:13:48,361 INFO L341 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2022-04-18 19:13:48,381 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 19:13:48,391 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 184 places, 191 transitions, 387 flow [2022-04-18 19:13:48,393 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 184 places, 191 transitions, 387 flow [2022-04-18 19:13:48,394 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 184 places, 191 transitions, 387 flow [2022-04-18 19:13:48,455 INFO L129 PetriNetUnfolder]: 11/202 cut-off events. [2022-04-18 19:13:48,456 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 19:13:48,462 INFO L84 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 202 events. 11/202 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 262 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 164. Up to 4 conditions per place. [2022-04-18 19:13:48,466 INFO L116 LiptonReduction]: Number of co-enabled transitions 4228 [2022-04-18 19:14:27,149 INFO L131 LiptonReduction]: Checked pairs total: 4908 [2022-04-18 19:14:27,150 INFO L133 LiptonReduction]: Total number of compositions: 242 [2022-04-18 19:14:27,155 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 47 places, 51 transitions, 107 flow [2022-04-18 19:14:27,172 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 197 states, 144 states have (on average 2.6458333333333335) internal successors, (381), 196 states have internal predecessors, (381), 0 states have call successors, (0), 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 19:14:27,174 INFO L276 IsEmpty]: Start isEmpty. Operand has 197 states, 144 states have (on average 2.6458333333333335) internal successors, (381), 196 states have internal predecessors, (381), 0 states have call successors, (0), 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 19:14:27,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-04-18 19:14:27,178 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:14:27,178 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2022-04-18 19:14:27,179 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err4ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2022-04-18 19:14:27,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:14:27,182 INFO L85 PathProgramCache]: Analyzing trace with hash 41135413, now seen corresponding path program 1 times [2022-04-18 19:14:27,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:14:27,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415322132] [2022-04-18 19:14:27,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:14:27,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:14:27,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:14:27,331 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 19:14:27,332 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:14:27,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415322132] [2022-04-18 19:14:27,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415322132] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:14:27,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:14:27,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-04-18 19:14:27,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114325197] [2022-04-18 19:14:27,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:14:27,338 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 19:14:27,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:14:27,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 19:14:27,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 19:14:27,354 INFO L87 Difference]: Start difference. First operand has 197 states, 144 states have (on average 2.6458333333333335) internal successors, (381), 196 states have internal predecessors, (381), 0 states have call successors, (0), 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 4.0) internal successors, (4), 2 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 19:14:27,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:14:27,464 INFO L93 Difference]: Finished difference Result 55 states and 110 transitions. [2022-04-18 19:14:27,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 19:14:27,466 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 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 19:14:27,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:14:27,470 INFO L225 Difference]: With dead ends: 55 [2022-04-18 19:14:27,471 INFO L226 Difference]: Without dead ends: 55 [2022-04-18 19:14:27,472 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 19:14:27,474 INFO L913 BasicCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-18 19:14:27,476 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-18 19:14:27,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-04-18 19:14:27,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-04-18 19:14:27,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 2.037037037037037) internal successors, (110), 54 states have internal predecessors, (110), 0 states have call successors, (0), 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 19:14:27,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 110 transitions. [2022-04-18 19:14:27,499 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 110 transitions. Word has length 4 [2022-04-18 19:14:27,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:14:27,500 INFO L478 AbstractCegarLoop]: Abstraction has 55 states and 110 transitions. [2022-04-18 19:14:27,500 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 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 19:14:27,500 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 110 transitions. [2022-04-18 19:14:27,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-04-18 19:14:27,500 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:14:27,501 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-04-18 19:14:27,501 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 19:14:27,501 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2022-04-18 19:14:27,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:14:27,502 INFO L85 PathProgramCache]: Analyzing trace with hash 876329894, now seen corresponding path program 1 times [2022-04-18 19:14:27,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:14:27,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615629945] [2022-04-18 19:14:27,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:14:27,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:14:27,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:14:27,532 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 19:14:27,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:14:27,556 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-04-18 19:14:27,556 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 19:14:27,557 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (52 of 53 remaining) [2022-04-18 19:14:27,558 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (51 of 53 remaining) [2022-04-18 19:14:27,559 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (50 of 53 remaining) [2022-04-18 19:14:27,559 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (49 of 53 remaining) [2022-04-18 19:14:27,559 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (48 of 53 remaining) [2022-04-18 19:14:27,559 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (47 of 53 remaining) [2022-04-18 19:14:27,559 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (46 of 53 remaining) [2022-04-18 19:14:27,560 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (45 of 53 remaining) [2022-04-18 19:14:27,560 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (44 of 53 remaining) [2022-04-18 19:14:27,560 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (43 of 53 remaining) [2022-04-18 19:14:27,560 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (42 of 53 remaining) [2022-04-18 19:14:27,560 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (41 of 53 remaining) [2022-04-18 19:14:27,560 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (40 of 53 remaining) [2022-04-18 19:14:27,561 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (39 of 53 remaining) [2022-04-18 19:14:27,561 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (38 of 53 remaining) [2022-04-18 19:14:27,561 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (37 of 53 remaining) [2022-04-18 19:14:27,561 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (36 of 53 remaining) [2022-04-18 19:14:27,561 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (35 of 53 remaining) [2022-04-18 19:14:27,561 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (34 of 53 remaining) [2022-04-18 19:14:27,562 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONDATA_RACE (33 of 53 remaining) [2022-04-18 19:14:27,562 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (32 of 53 remaining) [2022-04-18 19:14:27,562 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONDATA_RACE (31 of 53 remaining) [2022-04-18 19:14:27,562 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONDATA_RACE (30 of 53 remaining) [2022-04-18 19:14:27,562 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONDATA_RACE (29 of 53 remaining) [2022-04-18 19:14:27,562 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONDATA_RACE (28 of 53 remaining) [2022-04-18 19:14:27,563 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONDATA_RACE (27 of 53 remaining) [2022-04-18 19:14:27,563 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONDATA_RACE (26 of 53 remaining) [2022-04-18 19:14:27,563 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (25 of 53 remaining) [2022-04-18 19:14:27,563 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (24 of 53 remaining) [2022-04-18 19:14:27,563 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (23 of 53 remaining) [2022-04-18 19:14:27,563 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (22 of 53 remaining) [2022-04-18 19:14:27,564 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (21 of 53 remaining) [2022-04-18 19:14:27,564 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 53 remaining) [2022-04-18 19:14:27,564 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (19 of 53 remaining) [2022-04-18 19:14:27,564 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (18 of 53 remaining) [2022-04-18 19:14:27,564 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (17 of 53 remaining) [2022-04-18 19:14:27,564 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (16 of 53 remaining) [2022-04-18 19:14:27,565 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (15 of 53 remaining) [2022-04-18 19:14:27,565 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (14 of 53 remaining) [2022-04-18 19:14:27,565 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (13 of 53 remaining) [2022-04-18 19:14:27,565 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (12 of 53 remaining) [2022-04-18 19:14:27,565 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (11 of 53 remaining) [2022-04-18 19:14:27,566 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (10 of 53 remaining) [2022-04-18 19:14:27,566 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (9 of 53 remaining) [2022-04-18 19:14:27,566 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (8 of 53 remaining) [2022-04-18 19:14:27,566 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONDATA_RACE (7 of 53 remaining) [2022-04-18 19:14:27,566 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (6 of 53 remaining) [2022-04-18 19:14:27,566 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONDATA_RACE (5 of 53 remaining) [2022-04-18 19:14:27,567 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONDATA_RACE (4 of 53 remaining) [2022-04-18 19:14:27,567 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONDATA_RACE (3 of 53 remaining) [2022-04-18 19:14:27,567 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONDATA_RACE (2 of 53 remaining) [2022-04-18 19:14:27,567 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONDATA_RACE (1 of 53 remaining) [2022-04-18 19:14:27,567 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONDATA_RACE (0 of 53 remaining) [2022-04-18 19:14:27,568 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 19:14:27,569 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1] [2022-04-18 19:14:27,570 WARN L232 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 19:14:27,570 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-04-18 19:14:27,609 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 19:14:27,611 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 19:14:27,611 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 19:14:27,612 INFO L341 AbstractCegarLoop]: Starting to check reachability of 79 error locations. [2022-04-18 19:14:27,614 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 19:14:27,614 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 329 places, 343 transitions, 698 flow [2022-04-18 19:14:27,614 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 329 places, 343 transitions, 698 flow [2022-04-18 19:14:27,614 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 329 places, 343 transitions, 698 flow [2022-04-18 19:14:27,659 INFO L129 PetriNetUnfolder]: 21/367 cut-off events. [2022-04-18 19:14:27,659 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-04-18 19:14:27,664 INFO L84 FinitePrefix]: Finished finitePrefix Result has 377 conditions, 367 events. 21/367 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1004 event pairs, 0 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 315. Up to 6 conditions per place. [2022-04-18 19:14:27,685 INFO L116 LiptonReduction]: Number of co-enabled transitions 54360 [2022-04-18 19:17:56,892 INFO L131 LiptonReduction]: Checked pairs total: 395728 [2022-04-18 19:17:56,892 INFO L133 LiptonReduction]: Total number of compositions: 378 [2022-04-18 19:17:56,893 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 168 places, 177 transitions, 366 flow [2022-04-18 19:17:57,844 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 37363 states, 35880 states have (on average 3.099526198439242) internal successors, (111211), 37362 states have internal predecessors, (111211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:17:57,899 INFO L276 IsEmpty]: Start isEmpty. Operand has 37363 states, 35880 states have (on average 3.099526198439242) internal successors, (111211), 37362 states have internal predecessors, (111211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:17:57,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-04-18 19:17:57,900 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:17:57,900 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2022-04-18 19:17:57,900 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 75 more)] === [2022-04-18 19:17:57,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:17:57,901 INFO L85 PathProgramCache]: Analyzing trace with hash 65867120, now seen corresponding path program 1 times [2022-04-18 19:17:57,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:17:57,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533875247] [2022-04-18 19:17:57,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:17:57,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:17:57,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:17:57,950 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 19:17:57,950 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:17:57,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533875247] [2022-04-18 19:17:57,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533875247] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:17:57,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:17:57,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-04-18 19:17:57,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612472119] [2022-04-18 19:17:57,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:17:57,953 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 19:17:57,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:17:57,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 19:17:57,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 19:17:58,005 INFO L87 Difference]: Start difference. First operand has 37363 states, 35880 states have (on average 3.099526198439242) internal successors, (111211), 37362 states have internal predecessors, (111211), 0 states have call successors, (0), 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 4.0) internal successors, (4), 2 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 19:17:58,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:17:58,761 INFO L93 Difference]: Finished difference Result 20415 states and 59511 transitions. [2022-04-18 19:17:58,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 19:17:58,762 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 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 19:17:58,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:17:58,952 INFO L225 Difference]: With dead ends: 20415 [2022-04-18 19:17:58,952 INFO L226 Difference]: Without dead ends: 20415 [2022-04-18 19:17:58,953 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 19:17:58,953 INFO L913 BasicCegarLoop]: 80 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-18 19:17:58,954 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-18 19:17:59,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20415 states. [2022-04-18 19:17:59,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20415 to 20415. [2022-04-18 19:17:59,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20415 states, 20271 states have (on average 2.935770312268758) internal successors, (59511), 20414 states have internal predecessors, (59511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:17:59,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20415 states to 20415 states and 59511 transitions. [2022-04-18 19:17:59,835 INFO L78 Accepts]: Start accepts. Automaton has 20415 states and 59511 transitions. Word has length 4 [2022-04-18 19:17:59,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:17:59,835 INFO L478 AbstractCegarLoop]: Abstraction has 20415 states and 59511 transitions. [2022-04-18 19:17:59,835 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 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 19:17:59,836 INFO L276 IsEmpty]: Start isEmpty. Operand 20415 states and 59511 transitions. [2022-04-18 19:17:59,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-04-18 19:17:59,836 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:17:59,836 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-04-18 19:17:59,836 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 19:17:59,836 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 75 more)] === [2022-04-18 19:17:59,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:17:59,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1126153166, now seen corresponding path program 1 times [2022-04-18 19:17:59,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:17:59,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970053061] [2022-04-18 19:17:59,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:17:59,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:17:59,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:17:59,937 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 19:17:59,938 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:17:59,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970053061] [2022-04-18 19:17:59,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970053061] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:17:59,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:17:59,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 19:17:59,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249900403] [2022-04-18 19:17:59,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:17:59,938 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 19:17:59,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:17:59,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 19:17:59,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:17:59,939 INFO L87 Difference]: Start difference. First operand 20415 states and 59511 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 19:18:01,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:18:01,456 INFO L93 Difference]: Finished difference Result 38970 states and 113688 transitions. [2022-04-18 19:18:01,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 19:18:01,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2022-04-18 19:18:01,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:18:01,597 INFO L225 Difference]: With dead ends: 38970 [2022-04-18 19:18:01,597 INFO L226 Difference]: Without dead ends: 38970 [2022-04-18 19:18:01,598 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 19:18:01,598 INFO L913 BasicCegarLoop]: 85 mSDtfsCounter, 134 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-04-18 19:18:01,599 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 156 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-04-18 19:18:01,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38970 states. [2022-04-18 19:18:02,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38970 to 20761. [2022-04-18 19:18:02,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20761 states, 20620 states have (on average 2.957953443258972) internal successors, (60993), 20760 states have internal predecessors, (60993), 0 states have call successors, (0), 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 19:18:02,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20761 states to 20761 states and 60993 transitions. [2022-04-18 19:18:02,277 INFO L78 Accepts]: Start accepts. Automaton has 20761 states and 60993 transitions. Word has length 6 [2022-04-18 19:18:02,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:18:02,277 INFO L478 AbstractCegarLoop]: Abstraction has 20761 states and 60993 transitions. [2022-04-18 19:18:02,277 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 19:18:02,277 INFO L276 IsEmpty]: Start isEmpty. Operand 20761 states and 60993 transitions. [2022-04-18 19:18:02,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-18 19:18:02,278 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:18:02,278 INFO L499 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-04-18 19:18:02,278 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 19:18:02,278 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 75 more)] === [2022-04-18 19:18:02,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:18:02,279 INFO L85 PathProgramCache]: Analyzing trace with hash -735451668, now seen corresponding path program 1 times [2022-04-18 19:18:02,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:18:02,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187893578] [2022-04-18 19:18:02,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:18:02,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:18:02,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:18:02,291 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 19:18:02,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:18:02,306 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-04-18 19:18:02,306 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 19:18:02,307 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (78 of 79 remaining) [2022-04-18 19:18:02,307 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (77 of 79 remaining) [2022-04-18 19:18:02,307 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (76 of 79 remaining) [2022-04-18 19:18:02,307 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (75 of 79 remaining) [2022-04-18 19:18:02,307 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (74 of 79 remaining) [2022-04-18 19:18:02,307 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (73 of 79 remaining) [2022-04-18 19:18:02,308 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (72 of 79 remaining) [2022-04-18 19:18:02,308 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (71 of 79 remaining) [2022-04-18 19:18:02,308 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (70 of 79 remaining) [2022-04-18 19:18:02,308 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (69 of 79 remaining) [2022-04-18 19:18:02,308 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (68 of 79 remaining) [2022-04-18 19:18:02,308 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (67 of 79 remaining) [2022-04-18 19:18:02,308 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (66 of 79 remaining) [2022-04-18 19:18:02,309 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (65 of 79 remaining) [2022-04-18 19:18:02,309 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (64 of 79 remaining) [2022-04-18 19:18:02,309 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (63 of 79 remaining) [2022-04-18 19:18:02,309 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (62 of 79 remaining) [2022-04-18 19:18:02,309 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (61 of 79 remaining) [2022-04-18 19:18:02,309 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (60 of 79 remaining) [2022-04-18 19:18:02,309 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONDATA_RACE (59 of 79 remaining) [2022-04-18 19:18:02,310 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (58 of 79 remaining) [2022-04-18 19:18:02,310 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONDATA_RACE (57 of 79 remaining) [2022-04-18 19:18:02,310 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONDATA_RACE (56 of 79 remaining) [2022-04-18 19:18:02,310 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONDATA_RACE (55 of 79 remaining) [2022-04-18 19:18:02,310 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONDATA_RACE (54 of 79 remaining) [2022-04-18 19:18:02,310 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONDATA_RACE (53 of 79 remaining) [2022-04-18 19:18:02,310 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONDATA_RACE (52 of 79 remaining) [2022-04-18 19:18:02,311 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (51 of 79 remaining) [2022-04-18 19:18:02,311 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (50 of 79 remaining) [2022-04-18 19:18:02,311 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (49 of 79 remaining) [2022-04-18 19:18:02,311 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (48 of 79 remaining) [2022-04-18 19:18:02,311 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (47 of 79 remaining) [2022-04-18 19:18:02,311 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (46 of 79 remaining) [2022-04-18 19:18:02,311 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (45 of 79 remaining) [2022-04-18 19:18:02,312 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (44 of 79 remaining) [2022-04-18 19:18:02,312 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (43 of 79 remaining) [2022-04-18 19:18:02,312 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (42 of 79 remaining) [2022-04-18 19:18:02,312 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (41 of 79 remaining) [2022-04-18 19:18:02,312 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (40 of 79 remaining) [2022-04-18 19:18:02,312 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (39 of 79 remaining) [2022-04-18 19:18:02,312 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (38 of 79 remaining) [2022-04-18 19:18:02,313 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (37 of 79 remaining) [2022-04-18 19:18:02,313 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (36 of 79 remaining) [2022-04-18 19:18:02,313 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (35 of 79 remaining) [2022-04-18 19:18:02,313 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (34 of 79 remaining) [2022-04-18 19:18:02,313 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONDATA_RACE (33 of 79 remaining) [2022-04-18 19:18:02,313 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (32 of 79 remaining) [2022-04-18 19:18:02,313 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONDATA_RACE (31 of 79 remaining) [2022-04-18 19:18:02,314 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONDATA_RACE (30 of 79 remaining) [2022-04-18 19:18:02,314 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONDATA_RACE (29 of 79 remaining) [2022-04-18 19:18:02,314 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONDATA_RACE (28 of 79 remaining) [2022-04-18 19:18:02,314 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONDATA_RACE (27 of 79 remaining) [2022-04-18 19:18:02,314 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONDATA_RACE (26 of 79 remaining) [2022-04-18 19:18:02,314 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (25 of 79 remaining) [2022-04-18 19:18:02,314 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (24 of 79 remaining) [2022-04-18 19:18:02,315 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (23 of 79 remaining) [2022-04-18 19:18:02,315 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (22 of 79 remaining) [2022-04-18 19:18:02,315 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (21 of 79 remaining) [2022-04-18 19:18:02,315 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 79 remaining) [2022-04-18 19:18:02,315 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (19 of 79 remaining) [2022-04-18 19:18:02,315 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (18 of 79 remaining) [2022-04-18 19:18:02,315 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (17 of 79 remaining) [2022-04-18 19:18:02,316 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (16 of 79 remaining) [2022-04-18 19:18:02,316 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (15 of 79 remaining) [2022-04-18 19:18:02,316 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (14 of 79 remaining) [2022-04-18 19:18:02,316 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (13 of 79 remaining) [2022-04-18 19:18:02,316 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (12 of 79 remaining) [2022-04-18 19:18:02,316 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (11 of 79 remaining) [2022-04-18 19:18:02,316 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (10 of 79 remaining) [2022-04-18 19:18:02,317 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (9 of 79 remaining) [2022-04-18 19:18:02,317 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (8 of 79 remaining) [2022-04-18 19:18:02,317 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONDATA_RACE (7 of 79 remaining) [2022-04-18 19:18:02,317 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (6 of 79 remaining) [2022-04-18 19:18:02,317 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONDATA_RACE (5 of 79 remaining) [2022-04-18 19:18:02,317 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONDATA_RACE (4 of 79 remaining) [2022-04-18 19:18:02,317 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONDATA_RACE (3 of 79 remaining) [2022-04-18 19:18:02,318 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONDATA_RACE (2 of 79 remaining) [2022-04-18 19:18:02,318 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONDATA_RACE (1 of 79 remaining) [2022-04-18 19:18:02,318 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONDATA_RACE (0 of 79 remaining) [2022-04-18 19:18:02,318 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-18 19:18:02,318 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-04-18 19:18:02,319 WARN L232 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 19:18:02,319 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-04-18 19:18:02,375 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 19:18:02,376 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 19:18:02,377 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 19:18:02,377 INFO L341 AbstractCegarLoop]: Starting to check reachability of 105 error locations. [2022-04-18 19:18:02,380 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 19:18:02,380 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 474 places, 495 transitions, 1011 flow [2022-04-18 19:18:02,380 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 474 places, 495 transitions, 1011 flow [2022-04-18 19:18:02,380 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 474 places, 495 transitions, 1011 flow [2022-04-18 19:18:02,572 INFO L129 PetriNetUnfolder]: 31/532 cut-off events. [2022-04-18 19:18:02,572 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-04-18 19:18:02,583 INFO L84 FinitePrefix]: Finished finitePrefix Result has 548 conditions, 532 events. 31/532 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1971 event pairs, 0 based on Foata normal form. 0/419 useless extension candidates. Maximal degree in co-relation 466. Up to 8 conditions per place. [2022-04-18 19:18:02,611 INFO L116 LiptonReduction]: Number of co-enabled transitions 150396 [2022-04-18 19:18:10,712 WARN L232 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 106 DAG size of output: 93 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:21:25,990 WARN L230 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2022-04-18 19:21:25,991 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 101 [2022-04-18 19:21:25,994 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.checkImplication(TransFormulaUtils.java:1154) at de.uni_freiburg.informatik.ultimate.lib.tracecheckutils.independencerelation.SemanticIndependenceRelation.performInclusionCheck(SemanticIndependenceRelation.java:197) at de.uni_freiburg.informatik.ultimate.lib.tracecheckutils.independencerelation.SemanticIndependenceRelation.containsLBool(SemanticIndependenceRelation.java:145) at de.uni_freiburg.informatik.ultimate.lib.tracecheckutils.independencerelation.SemanticIndependenceRelation.contains(SemanticIndependenceRelation.java:123) at de.uni_freiburg.informatik.ultimate.lib.tracecheckutils.independencerelation.SemanticIndependenceRelation.contains(SemanticIndependenceRelation.java:1) at de.uni_freiburg.informatik.ultimate.automata.partialorder.UnionIndependenceRelation.lambda$2(UnionIndependenceRelation.java:70) at java.base/java.util.stream.MatchOps$1MatchSink.accept(MatchOps.java:90) at java.base/java.util.Spliterators$ArraySpliterator.tryAdvance(Spliterators.java:958) at java.base/java.util.stream.ReferencePipeline.forEachWithCancel(ReferencePipeline.java:127) at java.base/java.util.stream.AbstractPipeline.copyIntoWithCancel(AbstractPipeline.java:502) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:488) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.MatchOps$MatchOp.evaluateSequential(MatchOps.java:230) at java.base/java.util.stream.MatchOps$MatchOp.evaluateSequential(MatchOps.java:196) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.anyMatch(ReferencePipeline.java:528) at de.uni_freiburg.informatik.ultimate.automata.partialorder.UnionIndependenceRelation.contains(UnionIndependenceRelation.java:70) at de.uni_freiburg.informatik.ultimate.automata.partialorder.CachedIndependenceRelation.contains(CachedIndependenceRelation.java:120) at de.uni_freiburg.informatik.ultimate.automata.partialorder.LiptonReduction.lambda$1(LiptonReduction.java:465) at java.base/java.util.stream.MatchOps$1MatchSink.accept(MatchOps.java:90) at java.base/java.util.HashMap$KeySpliterator.tryAdvance(HashMap.java:1624) at java.base/java.util.stream.ReferencePipeline.forEachWithCancel(ReferencePipeline.java:127) at java.base/java.util.stream.AbstractPipeline.copyIntoWithCancel(AbstractPipeline.java:502) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:488) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.MatchOps$MatchOp.evaluateSequential(MatchOps.java:230) at java.base/java.util.stream.MatchOps$MatchOp.evaluateSequential(MatchOps.java:196) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.allMatch(ReferencePipeline.java:533) at de.uni_freiburg.informatik.ultimate.automata.partialorder.LiptonReduction.isRightMover(LiptonReduction.java:465) at de.uni_freiburg.informatik.ultimate.automata.partialorder.LiptonReduction.sequenceRuleCheck(LiptonReduction.java:408) at de.uni_freiburg.informatik.ultimate.automata.partialorder.LiptonReduction.sequenceRule(LiptonReduction.java:310) at de.uni_freiburg.informatik.ultimate.automata.partialorder.LiptonReduction.(LiptonReduction.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckutils.petrinetlbe.PetriNetLargeBlockEncoding.(PetriNetLargeBlockEncoding.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.getInitialAbstraction(BasicCegarLoop.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.computeInitialAbstraction(AbstractCegarLoop.java:367) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:331) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:411) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:301) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:172) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:153) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 60 more [2022-04-18 19:21:26,001 INFO L158 Benchmark]: Toolchain (without parser) took 459042.26ms. Allocated memory was 111.1MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 67.7MB in the beginning and 761.7MB in the end (delta: -694.0MB). Peak memory consumption was 976.7MB. Max. memory is 16.1GB. [2022-04-18 19:21:26,001 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 111.1MB. Free memory is still 86.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-04-18 19:21:26,002 INFO L158 Benchmark]: CACSL2BoogieTranslator took 384.47ms. Allocated memory is still 111.1MB. Free memory was 67.5MB in the beginning and 74.2MB in the end (delta: -6.7MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. [2022-04-18 19:21:26,002 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.88ms. Allocated memory is still 111.1MB. Free memory was 74.2MB in the beginning and 70.5MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-04-18 19:21:26,002 INFO L158 Benchmark]: Boogie Preprocessor took 30.50ms. Allocated memory is still 111.1MB. Free memory was 70.5MB in the beginning and 67.2MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-04-18 19:21:26,002 INFO L158 Benchmark]: RCFGBuilder took 789.19ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 67.0MB in the beginning and 70.2MB in the end (delta: -3.3MB). Peak memory consumption was 34.8MB. Max. memory is 16.1GB. [2022-04-18 19:21:26,003 INFO L158 Benchmark]: TraceAbstraction took 457776.68ms. Allocated memory was 134.2MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 69.6MB in the beginning and 761.7MB in the end (delta: -692.1MB). Peak memory consumption was 956.2MB. Max. memory is 16.1GB. [2022-04-18 19:21:26,005 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 111.1MB. Free memory is still 86.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 384.47ms. Allocated memory is still 111.1MB. Free memory was 67.5MB in the beginning and 74.2MB in the end (delta: -6.7MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.88ms. Allocated memory is still 111.1MB. Free memory was 74.2MB in the beginning and 70.5MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.50ms. Allocated memory is still 111.1MB. Free memory was 70.5MB in the beginning and 67.2MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 789.19ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 67.0MB in the beginning and 70.2MB in the end (delta: -3.3MB). Peak memory consumption was 34.8MB. Max. memory is 16.1GB. * TraceAbstraction took 457776.68ms. Allocated memory was 134.2MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 69.6MB in the beginning and 761.7MB in the end (delta: -692.1MB). Peak memory consumption was 956.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 38.8s, 184 PlacesBefore, 47 PlacesAfterwards, 191 TransitionsBefore, 51 TransitionsAfterwards, 4228 CoEnabledTransitionPairs, 7 FixpointIterations, 24 TrivialSequentialCompositions, 197 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 18 ConcurrentYvCompositions, 3 ChoiceCompositions, 242 TotalNumberOfCompositions, 4908 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4151, positive: 4010, positive conditional: 0, positive unconditional: 4010, negative: 141, negative conditional: 0, negative unconditional: 141, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2763, positive: 2719, positive conditional: 0, positive unconditional: 2719, negative: 44, negative conditional: 0, negative unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2763, positive: 2665, positive conditional: 0, positive unconditional: 2665, negative: 98, negative conditional: 0, negative unconditional: 98, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 98, positive: 54, positive conditional: 0, positive unconditional: 54, negative: 38, negative conditional: 0, negative unconditional: 38, unknown: 6, unknown conditional: 0, unknown unconditional: 6] , SemanticIndependenceRelation.Query Time [ms]: [ total: 13808, positive: 44, positive conditional: 0, positive unconditional: 44, negative: 148, negative conditional: 0, negative unconditional: 148, unknown: 13616, unknown conditional: 0, unknown unconditional: 13616] ], Cache Queries: [ total: 4151, positive: 1291, positive conditional: 0, positive unconditional: 1291, negative: 97, negative conditional: 0, negative unconditional: 97, unknown: 2763, unknown conditional: 0, unknown unconditional: 2763] , Statistics on independence cache: Total cache size (in pairs): 116, Positive cache size: 101, Positive conditional cache size: 0, Positive unconditional cache size: 101, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15 - 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: 209.3s, 329 PlacesBefore, 168 PlacesAfterwards, 343 TransitionsBefore, 177 TransitionsAfterwards, 54360 CoEnabledTransitionPairs, 14 FixpointIterations, 24 TrivialSequentialCompositions, 313 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 36 ConcurrentYvCompositions, 5 ChoiceCompositions, 378 TotalNumberOfCompositions, 395728 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 118598, positive: 115026, positive conditional: 0, positive unconditional: 115026, negative: 3572, negative conditional: 0, negative unconditional: 3572, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 42707, positive: 42284, positive conditional: 0, positive unconditional: 42284, negative: 423, negative conditional: 0, negative unconditional: 423, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 42707, positive: 35910, positive conditional: 0, positive unconditional: 35910, negative: 6797, negative conditional: 0, negative unconditional: 6797, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 6797, positive: 6374, positive conditional: 0, positive unconditional: 6374, negative: 350, negative conditional: 0, negative unconditional: 350, unknown: 73, unknown conditional: 0, unknown unconditional: 73] , SemanticIndependenceRelation.Query Time [ms]: [ total: 155294, positive: 4453, positive conditional: 0, positive unconditional: 4453, negative: 5315, negative conditional: 0, negative unconditional: 5315, unknown: 145526, unknown conditional: 0, unknown unconditional: 145526] ], Cache Queries: [ total: 118598, positive: 72742, positive conditional: 0, positive unconditional: 72742, negative: 3149, negative conditional: 0, negative unconditional: 3149, unknown: 42707, unknown conditional: 0, unknown unconditional: 42707] , Statistics on independence cache: Total cache size (in pairs): 6413, Positive cache size: 6126, Positive conditional cache size: 0, Positive unconditional cache size: 6126, Negative cache size: 287, Negative conditional cache size: 0, Negative unconditional cache size: 287 - 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 - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/TaipanReach.xml -i /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longest-1.i -s /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Bitvector.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 8c0827ac193c1e2b03d5ccf1e60b62c7d6ff1b4feade2c409a6c7ca2cebf9412 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 19:21:27,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 19:21:27,522 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 19:21:27,558 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 19:21:27,559 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 19:21:27,560 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 19:21:27,561 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 19:21:27,564 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 19:21:27,568 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 19:21:27,572 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 19:21:27,573 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 19:21:27,577 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 19:21:27,577 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 19:21:27,578 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 19:21:27,579 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 19:21:27,581 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 19:21:27,583 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 19:21:27,583 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 19:21:27,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 19:21:27,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 19:21:27,590 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 19:21:27,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 19:21:27,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 19:21:27,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 19:21:27,594 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 19:21:27,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 19:21:27,598 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 19:21:27,598 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 19:21:27,599 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 19:21:27,599 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 19:21:27,600 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 19:21:27,600 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 19:21:27,601 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 19:21:27,602 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 19:21:27,603 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 19:21:27,603 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 19:21:27,604 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 19:21:27,604 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 19:21:27,604 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 19:21:27,604 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 19:21:27,605 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 19:21:27,606 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 19:21:27,609 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Bitvector.epf [2022-04-18 19:21:27,638 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 19:21:27,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 19:21:27,639 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 19:21:27,639 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 19:21:27,640 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 19:21:27,640 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 19:21:27,640 INFO L138 SettingsManager]: * User list type=DISABLED [2022-04-18 19:21:27,640 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-04-18 19:21:27,640 INFO L138 SettingsManager]: * Explicit value domain=true [2022-04-18 19:21:27,641 INFO L138 SettingsManager]: * Octagon Domain=false [2022-04-18 19:21:27,641 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-04-18 19:21:27,641 INFO L138 SettingsManager]: * Interval Domain=false [2022-04-18 19:21:27,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 19:21:27,642 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 19:21:27,642 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 19:21:27,642 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 19:21:27,642 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 19:21:27,643 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 19:21:27,643 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 19:21:27,643 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 19:21:27,643 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 19:21:27,643 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-04-18 19:21:27,643 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-04-18 19:21:27,643 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 19:21:27,644 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 19:21:27,644 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 19:21:27,644 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 19:21:27,644 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 19:21:27,644 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-18 19:21:27,644 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 19:21:27,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 19:21:27,645 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 19:21:27,645 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 19:21:27,645 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 19:21:27,645 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-04-18 19:21:27,646 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-04-18 19:21:27,646 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 19:21:27,646 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-18 19:21:27,646 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-18 19:21:27,646 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c0827ac193c1e2b03d5ccf1e60b62c7d6ff1b4feade2c409a6c7ca2cebf9412 [2022-04-18 19:21:27,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 19:21:27,895 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 19:21:27,898 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 19:21:27,898 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 19:21:27,899 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 19:21:27,900 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longest-1.i [2022-04-18 19:21:27,940 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4eae896a2/ff08fb9b0bb54112888efb010a2f0195/FLAGf290ae819 [2022-04-18 19:21:28,292 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 19:21:28,292 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longest-1.i [2022-04-18 19:21:28,304 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4eae896a2/ff08fb9b0bb54112888efb010a2f0195/FLAGf290ae819 [2022-04-18 19:21:28,688 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4eae896a2/ff08fb9b0bb54112888efb010a2f0195 [2022-04-18 19:21:28,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 19:21:28,691 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 19:21:28,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 19:21:28,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 19:21:28,696 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 19:21:28,697 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:21:28" (1/1) ... [2022-04-18 19:21:28,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5407e98a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:28, skipping insertion in model container [2022-04-18 19:21:28,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:21:28" (1/1) ... [2022-04-18 19:21:28,702 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 19:21:28,724 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 19:21:29,000 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longest-1.i[31167,31180] [2022-04-18 19:21:29,006 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 19:21:29,016 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 19:21:29,062 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longest-1.i[31167,31180] [2022-04-18 19:21:29,065 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 19:21:29,093 INFO L208 MainTranslator]: Completed translation [2022-04-18 19:21:29,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:29 WrapperNode [2022-04-18 19:21:29,093 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 19:21:29,094 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 19:21:29,094 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 19:21:29,094 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 19:21:29,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:29" (1/1) ... [2022-04-18 19:21:29,120 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:29" (1/1) ... [2022-04-18 19:21:29,165 INFO L137 Inliner]: procedures = 181, calls = 47, calls flagged for inlining = 16, calls inlined = 19, statements flattened = 316 [2022-04-18 19:21:29,165 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 19:21:29,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 19:21:29,166 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 19:21:29,166 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 19:21:29,173 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:29" (1/1) ... [2022-04-18 19:21:29,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:29" (1/1) ... [2022-04-18 19:21:29,190 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:29" (1/1) ... [2022-04-18 19:21:29,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:29" (1/1) ... [2022-04-18 19:21:29,224 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:29" (1/1) ... [2022-04-18 19:21:29,234 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:29" (1/1) ... [2022-04-18 19:21:29,248 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:29" (1/1) ... [2022-04-18 19:21:29,256 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 19:21:29,262 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 19:21:29,262 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 19:21:29,262 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 19:21:29,263 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:29" (1/1) ... [2022-04-18 19:21:29,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 19:21:29,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 19:21:29,285 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 19:21:29,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-04-18 19:21:29,314 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-04-18 19:21:29,314 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-04-18 19:21:29,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 19:21:29,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 19:21:29,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 19:21:29,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-04-18 19:21:29,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-04-18 19:21:29,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-04-18 19:21:29,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 19:21:29,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 19:21:29,316 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-04-18 19:21:29,304 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 19:21:29,464 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 19:21:29,465 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 19:21:29,925 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 19:21:30,142 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 19:21:30,143 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-04-18 19:21:30,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:21:30 BoogieIcfgContainer [2022-04-18 19:21:30,145 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 19:21:30,146 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 19:21:30,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 19:21:30,148 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 19:21:30,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:21:28" (1/3) ... [2022-04-18 19:21:30,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74a35559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:21:30, skipping insertion in model container [2022-04-18 19:21:30,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:29" (2/3) ... [2022-04-18 19:21:30,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74a35559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:21:30, skipping insertion in model container [2022-04-18 19:21:30,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:21:30" (3/3) ... [2022-04-18 19:21:30,150 INFO L111 eAbstractionObserver]: Analyzing ICFG 26_stack_cas_longest-1.i [2022-04-18 19:21:30,154 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 19:21:30,154 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 19:21:30,154 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-04-18 19:21:30,155 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 19:21:30,242 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 19:21:30,276 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 19:21:30,281 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 19:21:30,281 INFO L341 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2022-04-18 19:21:30,305 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 19:21:30,314 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 182 places, 189 transitions, 383 flow [2022-04-18 19:21:30,316 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 182 places, 189 transitions, 383 flow [2022-04-18 19:21:30,318 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 182 places, 189 transitions, 383 flow [2022-04-18 19:21:30,384 INFO L129 PetriNetUnfolder]: 11/200 cut-off events. [2022-04-18 19:21:30,385 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 19:21:30,389 INFO L84 FinitePrefix]: Finished finitePrefix Result has 205 conditions, 200 events. 11/200 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 262 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 161. Up to 4 conditions per place. [2022-04-18 19:21:30,393 INFO L116 LiptonReduction]: Number of co-enabled transitions 4144 [2022-04-18 19:21:49,460 WARN L232 SmtUtils]: Spent 8.21s on a formula simplification. DAG size of input: 67 DAG size of output: 61 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:22:19,288 WARN L232 SmtUtils]: Spent 19.29s on a formula simplification. DAG size of input: 127 DAG size of output: 111 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:22:35,649 WARN L232 SmtUtils]: Spent 16.36s on a formula simplification. DAG size of input: 115 DAG size of output: 109 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:22:51,323 WARN L232 SmtUtils]: Spent 15.67s on a formula simplification. DAG size of input: 133 DAG size of output: 114 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:22:58,143 WARN L232 SmtUtils]: Spent 6.81s on a formula simplification. DAG size of input: 120 DAG size of output: 112 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:23:39,233 INFO L131 LiptonReduction]: Checked pairs total: 5158 [2022-04-18 19:23:39,233 INFO L133 LiptonReduction]: Total number of compositions: 264 [2022-04-18 19:23:39,238 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 47 places, 51 transitions, 107 flow [2022-04-18 19:23:39,253 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 197 states, 144 states have (on average 2.6458333333333335) internal successors, (381), 196 states have internal predecessors, (381), 0 states have call successors, (0), 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 19:23:39,255 INFO L276 IsEmpty]: Start isEmpty. Operand has 197 states, 144 states have (on average 2.6458333333333335) internal successors, (381), 196 states have internal predecessors, (381), 0 states have call successors, (0), 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 19:23:39,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-04-18 19:23:39,258 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:23:39,258 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2022-04-18 19:23:39,259 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2022-04-18 19:23:39,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:23:39,262 INFO L85 PathProgramCache]: Analyzing trace with hash 40932348, now seen corresponding path program 1 times [2022-04-18 19:23:39,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-04-18 19:23:39,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [73516620] [2022-04-18 19:23:39,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:23:39,270 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-04-18 19:23:39,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat [2022-04-18 19:23:39,272 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-04-18 19:23:39,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-04-18 19:23:39,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:23:39,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 1 conjunts are in the unsatisfiable core [2022-04-18 19:23:39,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 19:23:39,386 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 19:23:39,386 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 19:23:39,387 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-04-18 19:23:39,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [73516620] [2022-04-18 19:23:39,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [73516620] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:23:39,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:23:39,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-04-18 19:23:39,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759261978] [2022-04-18 19:23:39,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:23:39,392 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 19:23:39,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-04-18 19:23:39,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 19:23:39,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 19:23:39,410 INFO L87 Difference]: Start difference. First operand has 197 states, 144 states have (on average 2.6458333333333335) internal successors, (381), 196 states have internal predecessors, (381), 0 states have call successors, (0), 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 4.0) internal successors, (4), 2 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 19:23:39,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:23:39,764 INFO L93 Difference]: Finished difference Result 55 states and 110 transitions. [2022-04-18 19:23:39,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 19:23:39,767 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 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 19:23:39,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:23:39,771 INFO L225 Difference]: With dead ends: 55 [2022-04-18 19:23:39,771 INFO L226 Difference]: Without dead ends: 55 [2022-04-18 19:23:39,772 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 3 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 19:23:39,774 INFO L913 BasicCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-18 19:23:39,774 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-18 19:23:39,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-04-18 19:23:39,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-04-18 19:23:39,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 2.037037037037037) internal successors, (110), 54 states have internal predecessors, (110), 0 states have call successors, (0), 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 19:23:39,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 110 transitions. [2022-04-18 19:23:39,796 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 110 transitions. Word has length 4 [2022-04-18 19:23:39,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:23:39,796 INFO L478 AbstractCegarLoop]: Abstraction has 55 states and 110 transitions. [2022-04-18 19:23:39,797 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 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 19:23:39,797 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 110 transitions. [2022-04-18 19:23:39,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-04-18 19:23:39,797 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:23:39,797 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-04-18 19:23:39,805 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-04-18 19:23:40,004 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 [2022-04-18 19:23:40,005 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2022-04-18 19:23:40,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:23:40,005 INFO L85 PathProgramCache]: Analyzing trace with hash 681162503, now seen corresponding path program 1 times [2022-04-18 19:23:40,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-04-18 19:23:40,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1684467747] [2022-04-18 19:23:40,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:23:40,006 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-04-18 19:23:40,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat [2022-04-18 19:23:40,007 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-04-18 19:23:40,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-04-18 19:23:40,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:23:40,072 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 19:23:40,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:23:40,110 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-04-18 19:23:40,110 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 19:23:40,111 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (52 of 53 remaining) [2022-04-18 19:23:40,136 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (51 of 53 remaining) [2022-04-18 19:23:40,137 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (50 of 53 remaining) [2022-04-18 19:23:40,137 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (49 of 53 remaining) [2022-04-18 19:23:40,137 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (48 of 53 remaining) [2022-04-18 19:23:40,137 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (47 of 53 remaining) [2022-04-18 19:23:40,137 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (46 of 53 remaining) [2022-04-18 19:23:40,137 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (45 of 53 remaining) [2022-04-18 19:23:40,138 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (44 of 53 remaining) [2022-04-18 19:23:40,138 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (43 of 53 remaining) [2022-04-18 19:23:40,138 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (42 of 53 remaining) [2022-04-18 19:23:40,138 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (41 of 53 remaining) [2022-04-18 19:23:40,138 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (40 of 53 remaining) [2022-04-18 19:23:40,138 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (39 of 53 remaining) [2022-04-18 19:23:40,139 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (38 of 53 remaining) [2022-04-18 19:23:40,139 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (37 of 53 remaining) [2022-04-18 19:23:40,139 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (36 of 53 remaining) [2022-04-18 19:23:40,139 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (35 of 53 remaining) [2022-04-18 19:23:40,139 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (34 of 53 remaining) [2022-04-18 19:23:40,139 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONDATA_RACE (33 of 53 remaining) [2022-04-18 19:23:40,139 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (32 of 53 remaining) [2022-04-18 19:23:40,140 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONDATA_RACE (31 of 53 remaining) [2022-04-18 19:23:40,140 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONDATA_RACE (30 of 53 remaining) [2022-04-18 19:23:40,140 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONDATA_RACE (29 of 53 remaining) [2022-04-18 19:23:40,140 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONDATA_RACE (28 of 53 remaining) [2022-04-18 19:23:40,140 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONDATA_RACE (27 of 53 remaining) [2022-04-18 19:23:40,140 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONDATA_RACE (26 of 53 remaining) [2022-04-18 19:23:40,141 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (25 of 53 remaining) [2022-04-18 19:23:40,141 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (24 of 53 remaining) [2022-04-18 19:23:40,141 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (23 of 53 remaining) [2022-04-18 19:23:40,141 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (22 of 53 remaining) [2022-04-18 19:23:40,141 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (21 of 53 remaining) [2022-04-18 19:23:40,141 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 53 remaining) [2022-04-18 19:23:40,142 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (19 of 53 remaining) [2022-04-18 19:23:40,142 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (18 of 53 remaining) [2022-04-18 19:23:40,142 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (17 of 53 remaining) [2022-04-18 19:23:40,142 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (16 of 53 remaining) [2022-04-18 19:23:40,142 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (15 of 53 remaining) [2022-04-18 19:23:40,142 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (14 of 53 remaining) [2022-04-18 19:23:40,143 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (13 of 53 remaining) [2022-04-18 19:23:40,143 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (12 of 53 remaining) [2022-04-18 19:23:40,143 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (11 of 53 remaining) [2022-04-18 19:23:40,143 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (10 of 53 remaining) [2022-04-18 19:23:40,143 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (9 of 53 remaining) [2022-04-18 19:23:40,143 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (8 of 53 remaining) [2022-04-18 19:23:40,143 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONDATA_RACE (7 of 53 remaining) [2022-04-18 19:23:40,144 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (6 of 53 remaining) [2022-04-18 19:23:40,144 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONDATA_RACE (5 of 53 remaining) [2022-04-18 19:23:40,144 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONDATA_RACE (4 of 53 remaining) [2022-04-18 19:23:40,144 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONDATA_RACE (3 of 53 remaining) [2022-04-18 19:23:40,144 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONDATA_RACE (2 of 53 remaining) [2022-04-18 19:23:40,144 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONDATA_RACE (1 of 53 remaining) [2022-04-18 19:23:40,145 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONDATA_RACE (0 of 53 remaining) [2022-04-18 19:23:40,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-04-18 19:23:40,352 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 [2022-04-18 19:23:40,354 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1] [2022-04-18 19:23:40,355 WARN L232 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 19:23:40,355 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-04-18 19:23:40,415 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 19:23:40,422 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 19:23:40,424 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 19:23:40,424 INFO L341 AbstractCegarLoop]: Starting to check reachability of 79 error locations. [2022-04-18 19:23:40,428 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 19:23:40,428 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 324 places, 338 transitions, 688 flow [2022-04-18 19:23:40,429 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 324 places, 338 transitions, 688 flow [2022-04-18 19:23:40,429 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 324 places, 338 transitions, 688 flow [2022-04-18 19:23:40,485 INFO L129 PetriNetUnfolder]: 21/362 cut-off events. [2022-04-18 19:23:40,485 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-04-18 19:23:40,492 INFO L84 FinitePrefix]: Finished finitePrefix Result has 372 conditions, 362 events. 21/362 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 979 event pairs, 0 based on Foata normal form. 0/286 useless extension candidates. Maximal degree in co-relation 309. Up to 6 conditions per place. [2022-04-18 19:23:40,539 INFO L116 LiptonReduction]: Number of co-enabled transitions 52392 [2022-04-18 19:26:39,842 INFO L131 LiptonReduction]: Checked pairs total: 432265 [2022-04-18 19:26:39,843 INFO L133 LiptonReduction]: Total number of compositions: 364 [2022-04-18 19:26:39,844 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 170 places, 179 transitions, 370 flow [2022-04-18 19:26:40,661 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 38316 states, 36833 states have (on average 3.0944804930361363) internal successors, (113979), 38315 states have internal predecessors, (113979), 0 states have call successors, (0), 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 19:26:40,758 INFO L276 IsEmpty]: Start isEmpty. Operand has 38316 states, 36833 states have (on average 3.0944804930361363) internal successors, (113979), 38315 states have internal predecessors, (113979), 0 states have call successors, (0), 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 19:26:40,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-04-18 19:26:40,759 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:26:40,759 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2022-04-18 19:26:40,762 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 75 more)] === [2022-04-18 19:26:40,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:26:40,763 INFO L85 PathProgramCache]: Analyzing trace with hash 65360787, now seen corresponding path program 1 times [2022-04-18 19:26:40,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-04-18 19:26:40,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [934730009] [2022-04-18 19:26:40,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:26:40,765 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-04-18 19:26:40,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat [2022-04-18 19:26:40,767 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-04-18 19:26:40,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-04-18 19:26:40,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:26:40,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 1 conjunts are in the unsatisfiable core [2022-04-18 19:26:40,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 19:26:40,864 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 19:26:40,864 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 19:26:40,864 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-04-18 19:26:40,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [934730009] [2022-04-18 19:26:40,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [934730009] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:26:40,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:26:40,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-04-18 19:26:40,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25217512] [2022-04-18 19:26:40,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:26:40,865 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 19:26:40,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-04-18 19:26:40,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 19:26:40,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 19:26:40,919 INFO L87 Difference]: Start difference. First operand has 38316 states, 36833 states have (on average 3.0944804930361363) internal successors, (113979), 38315 states have internal predecessors, (113979), 0 states have call successors, (0), 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 4.0) internal successors, (4), 2 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 19:26:41,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:26:41,680 INFO L93 Difference]: Finished difference Result 21059 states and 61351 transitions. [2022-04-18 19:26:41,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 19:26:41,681 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 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 19:26:41,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:26:41,785 INFO L225 Difference]: With dead ends: 21059 [2022-04-18 19:26:41,785 INFO L226 Difference]: Without dead ends: 21059 [2022-04-18 19:26:41,786 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 3 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 19:26:41,786 INFO L913 BasicCegarLoop]: 84 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-18 19:26:41,787 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-18 19:26:41,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21059 states. [2022-04-18 19:26:42,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21059 to 21059. [2022-04-18 19:26:42,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21059 states, 20915 states have (on average 2.9333492708582356) internal successors, (61351), 21058 states have internal predecessors, (61351), 0 states have call successors, (0), 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 19:26:42,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21059 states to 21059 states and 61351 transitions. [2022-04-18 19:26:42,407 INFO L78 Accepts]: Start accepts. Automaton has 21059 states and 61351 transitions. Word has length 4 [2022-04-18 19:26:42,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:26:42,407 INFO L478 AbstractCegarLoop]: Abstraction has 21059 states and 61351 transitions. [2022-04-18 19:26:42,407 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 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 19:26:42,407 INFO L276 IsEmpty]: Start isEmpty. Operand 21059 states and 61351 transitions. [2022-04-18 19:26:42,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-04-18 19:26:42,408 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:26:42,408 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-04-18 19:26:42,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-04-18 19:26:42,616 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 [2022-04-18 19:26:42,618 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 75 more)] === [2022-04-18 19:26:42,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:26:42,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1612738923, now seen corresponding path program 1 times [2022-04-18 19:26:42,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-04-18 19:26:42,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1300387510] [2022-04-18 19:26:42,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:26:42,619 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-04-18 19:26:42,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat [2022-04-18 19:26:42,620 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-04-18 19:26:42,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-04-18 19:26:42,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:26:42,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 2 conjunts are in the unsatisfiable core [2022-04-18 19:26:42,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 19:26:42,752 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 19:26:42,752 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 19:26:42,752 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-04-18 19:26:42,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1300387510] [2022-04-18 19:26:42,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1300387510] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:26:42,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:26:42,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 19:26:42,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781167195] [2022-04-18 19:26:42,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:26:42,753 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 19:26:42,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-04-18 19:26:42,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 19:26:42,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:26:42,753 INFO L87 Difference]: Start difference. First operand 21059 states and 61351 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 19:26:43,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:26:43,921 INFO L93 Difference]: Finished difference Result 40248 states and 117340 transitions. [2022-04-18 19:26:43,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 19:26:43,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2022-04-18 19:26:43,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:26:44,069 INFO L225 Difference]: With dead ends: 40248 [2022-04-18 19:26:44,070 INFO L226 Difference]: Without dead ends: 40248 [2022-04-18 19:26:44,070 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 19:26:44,070 INFO L913 BasicCegarLoop]: 89 mSDtfsCounter, 136 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-18 19:26:44,071 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 164 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-18 19:26:44,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40248 states. [2022-04-18 19:26:44,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40248 to 21415. [2022-04-18 19:26:44,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21415 states, 21274 states have (on average 2.9435461126257403) internal successors, (62621), 21414 states have internal predecessors, (62621), 0 states have call successors, (0), 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 19:26:44,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21415 states to 21415 states and 62621 transitions. [2022-04-18 19:26:44,808 INFO L78 Accepts]: Start accepts. Automaton has 21415 states and 62621 transitions. Word has length 6 [2022-04-18 19:26:44,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:26:44,808 INFO L478 AbstractCegarLoop]: Abstraction has 21415 states and 62621 transitions. [2022-04-18 19:26:44,808 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 19:26:44,809 INFO L276 IsEmpty]: Start isEmpty. Operand 21415 states and 62621 transitions. [2022-04-18 19:26:44,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-18 19:26:44,809 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:26:44,809 INFO L499 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-04-18 19:26:44,824 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-04-18 19:26:45,010 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 [2022-04-18 19:26:45,010 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 75 more)] === [2022-04-18 19:26:45,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:26:45,010 INFO L85 PathProgramCache]: Analyzing trace with hash 836765552, now seen corresponding path program 1 times [2022-04-18 19:26:45,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-04-18 19:26:45,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1199324897] [2022-04-18 19:26:45,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:26:45,011 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-04-18 19:26:45,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat [2022-04-18 19:26:45,012 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-04-18 19:26:45,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-04-18 19:26:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:26:45,094 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 19:26:45,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:26:45,134 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-04-18 19:26:45,135 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 19:26:45,135 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (78 of 79 remaining) [2022-04-18 19:26:45,135 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (77 of 79 remaining) [2022-04-18 19:26:45,135 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (76 of 79 remaining) [2022-04-18 19:26:45,135 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (75 of 79 remaining) [2022-04-18 19:26:45,135 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (74 of 79 remaining) [2022-04-18 19:26:45,136 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (73 of 79 remaining) [2022-04-18 19:26:45,136 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (72 of 79 remaining) [2022-04-18 19:26:45,136 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (71 of 79 remaining) [2022-04-18 19:26:45,136 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (70 of 79 remaining) [2022-04-18 19:26:45,136 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (69 of 79 remaining) [2022-04-18 19:26:45,136 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (68 of 79 remaining) [2022-04-18 19:26:45,136 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (67 of 79 remaining) [2022-04-18 19:26:45,136 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (66 of 79 remaining) [2022-04-18 19:26:45,137 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (65 of 79 remaining) [2022-04-18 19:26:45,137 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (64 of 79 remaining) [2022-04-18 19:26:45,137 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (63 of 79 remaining) [2022-04-18 19:26:45,137 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (62 of 79 remaining) [2022-04-18 19:26:45,137 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (61 of 79 remaining) [2022-04-18 19:26:45,137 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (60 of 79 remaining) [2022-04-18 19:26:45,137 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONDATA_RACE (59 of 79 remaining) [2022-04-18 19:26:45,138 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (58 of 79 remaining) [2022-04-18 19:26:45,138 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONDATA_RACE (57 of 79 remaining) [2022-04-18 19:26:45,138 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONDATA_RACE (56 of 79 remaining) [2022-04-18 19:26:45,138 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONDATA_RACE (55 of 79 remaining) [2022-04-18 19:26:45,138 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONDATA_RACE (54 of 79 remaining) [2022-04-18 19:26:45,138 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONDATA_RACE (53 of 79 remaining) [2022-04-18 19:26:45,138 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONDATA_RACE (52 of 79 remaining) [2022-04-18 19:26:45,139 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (51 of 79 remaining) [2022-04-18 19:26:45,139 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (50 of 79 remaining) [2022-04-18 19:26:45,139 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (49 of 79 remaining) [2022-04-18 19:26:45,139 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (48 of 79 remaining) [2022-04-18 19:26:45,139 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (47 of 79 remaining) [2022-04-18 19:26:45,139 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (46 of 79 remaining) [2022-04-18 19:26:45,139 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (45 of 79 remaining) [2022-04-18 19:26:45,139 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (44 of 79 remaining) [2022-04-18 19:26:45,140 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (43 of 79 remaining) [2022-04-18 19:26:45,140 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (42 of 79 remaining) [2022-04-18 19:26:45,140 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (41 of 79 remaining) [2022-04-18 19:26:45,140 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (40 of 79 remaining) [2022-04-18 19:26:45,140 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (39 of 79 remaining) [2022-04-18 19:26:45,140 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (38 of 79 remaining) [2022-04-18 19:26:45,140 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (37 of 79 remaining) [2022-04-18 19:26:45,141 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (36 of 79 remaining) [2022-04-18 19:26:45,141 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (35 of 79 remaining) [2022-04-18 19:26:45,141 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (34 of 79 remaining) [2022-04-18 19:26:45,141 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONDATA_RACE (33 of 79 remaining) [2022-04-18 19:26:45,141 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (32 of 79 remaining) [2022-04-18 19:26:45,141 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONDATA_RACE (31 of 79 remaining) [2022-04-18 19:26:45,141 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONDATA_RACE (30 of 79 remaining) [2022-04-18 19:26:45,142 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONDATA_RACE (29 of 79 remaining) [2022-04-18 19:26:45,142 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONDATA_RACE (28 of 79 remaining) [2022-04-18 19:26:45,142 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONDATA_RACE (27 of 79 remaining) [2022-04-18 19:26:45,142 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONDATA_RACE (26 of 79 remaining) [2022-04-18 19:26:45,142 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (25 of 79 remaining) [2022-04-18 19:26:45,142 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (24 of 79 remaining) [2022-04-18 19:26:45,142 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (23 of 79 remaining) [2022-04-18 19:26:45,143 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (22 of 79 remaining) [2022-04-18 19:26:45,143 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (21 of 79 remaining) [2022-04-18 19:26:45,143 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 79 remaining) [2022-04-18 19:26:45,143 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (19 of 79 remaining) [2022-04-18 19:26:45,143 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (18 of 79 remaining) [2022-04-18 19:26:45,143 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (17 of 79 remaining) [2022-04-18 19:26:45,143 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (16 of 79 remaining) [2022-04-18 19:26:45,144 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (15 of 79 remaining) [2022-04-18 19:26:45,144 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (14 of 79 remaining) [2022-04-18 19:26:45,144 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (13 of 79 remaining) [2022-04-18 19:26:45,144 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (12 of 79 remaining) [2022-04-18 19:26:45,144 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (11 of 79 remaining) [2022-04-18 19:26:45,144 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (10 of 79 remaining) [2022-04-18 19:26:45,144 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (9 of 79 remaining) [2022-04-18 19:26:45,144 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (8 of 79 remaining) [2022-04-18 19:26:45,145 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONDATA_RACE (7 of 79 remaining) [2022-04-18 19:26:45,145 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONDATA_RACE (6 of 79 remaining) [2022-04-18 19:26:45,145 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONDATA_RACE (5 of 79 remaining) [2022-04-18 19:26:45,145 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONDATA_RACE (4 of 79 remaining) [2022-04-18 19:26:45,145 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23ASSERT_VIOLATIONDATA_RACE (3 of 79 remaining) [2022-04-18 19:26:45,145 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21ASSERT_VIOLATIONDATA_RACE (2 of 79 remaining) [2022-04-18 19:26:45,145 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22ASSERT_VIOLATIONDATA_RACE (1 of 79 remaining) [2022-04-18 19:26:45,146 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24ASSERT_VIOLATIONDATA_RACE (0 of 79 remaining) [2022-04-18 19:26:45,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-04-18 19:26:45,353 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 [2022-04-18 19:26:45,353 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-04-18 19:26:45,354 WARN L232 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 19:26:45,354 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-04-18 19:26:45,423 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 19:26:45,424 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 19:26:45,424 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 19:26:45,425 INFO L341 AbstractCegarLoop]: Starting to check reachability of 105 error locations. [2022-04-18 19:26:45,429 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 19:26:45,429 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 466 places, 487 transitions, 995 flow [2022-04-18 19:26:45,429 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 466 places, 487 transitions, 995 flow [2022-04-18 19:26:45,429 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 466 places, 487 transitions, 995 flow [2022-04-18 19:26:45,525 INFO L129 PetriNetUnfolder]: 31/524 cut-off events. [2022-04-18 19:26:45,525 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-04-18 19:26:45,536 INFO L84 FinitePrefix]: Finished finitePrefix Result has 540 conditions, 524 events. 31/524 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1936 event pairs, 0 based on Foata normal form. 0/411 useless extension candidates. Maximal degree in co-relation 457. Up to 8 conditions per place. [2022-04-18 19:26:45,569 INFO L116 LiptonReduction]: Number of co-enabled transitions 144744 [2022-04-18 19:27:05,745 WARN L232 SmtUtils]: Spent 9.62s on a formula simplification. DAG size of input: 64 DAG size of output: 56 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) Killed by 15