./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_45-escape_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_45-escape_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4864acf28eb3fe42b4a237468061905eb474c41e1edb519c0790cee08cdc91bf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 11:04:08,251 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 11:04:08,253 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 11:04:08,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 11:04:08,282 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 11:04:08,285 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 11:04:08,286 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 11:04:08,289 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 11:04:08,291 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 11:04:08,294 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 11:04:08,295 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 11:04:08,297 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 11:04:08,298 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 11:04:08,299 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 11:04:08,301 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 11:04:08,303 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 11:04:08,304 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 11:04:08,306 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 11:04:08,307 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 11:04:08,310 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 11:04:08,311 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 11:04:08,312 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 11:04:08,312 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 11:04:08,313 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 11:04:08,321 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 11:04:08,322 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 11:04:08,322 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 11:04:08,322 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 11:04:08,323 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 11:04:08,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 11:04:08,327 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 11:04:08,328 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 11:04:08,329 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 11:04:08,330 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 11:04:08,330 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 11:04:08,330 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 11:04:08,331 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 11:04:08,331 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 11:04:08,331 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 11:04:08,332 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 11:04:08,332 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 11:04:08,334 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 11:04:08,359 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 11:04:08,359 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 11:04:08,360 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 11:04:08,360 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 11:04:08,361 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 11:04:08,361 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 11:04:08,362 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 11:04:08,362 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 11:04:08,362 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 11:04:08,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 11:04:08,363 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 11:04:08,363 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 11:04:08,363 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 11:04:08,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 11:04:08,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 11:04:08,364 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 11:04:08,364 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 11:04:08,364 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 11:04:08,364 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 11:04:08,364 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 11:04:08,364 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 11:04:08,364 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 11:04:08,365 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 11:04:08,365 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 11:04:08,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 11:04:08,365 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 11:04:08,365 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 11:04:08,365 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 11:04:08,366 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 11:04:08,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 11:04:08,366 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 11:04:08,366 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 11:04:08,366 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 11:04:08,366 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 11:04:08,366 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 11:04:08,367 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4864acf28eb3fe42b4a237468061905eb474c41e1edb519c0790cee08cdc91bf Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 11:04:08,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 11:04:08,640 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 11:04:08,642 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 11:04:08,643 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 11:04:08,643 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 11:04:08,644 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_45-escape_racing.i [2023-09-01 11:04:09,625 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 11:04:09,844 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 11:04:09,844 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_45-escape_racing.i [2023-09-01 11:04:09,853 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a6cab80a/16ffc19d1bf6441999fe824d23b64de2/FLAG2d5a6fec6 [2023-09-01 11:04:09,861 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a6cab80a/16ffc19d1bf6441999fe824d23b64de2 [2023-09-01 11:04:09,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 11:04:09,864 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 11:04:09,865 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 11:04:09,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 11:04:09,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 11:04:09,871 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 11:04:09" (1/1) ... [2023-09-01 11:04:09,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bccf361 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:04:09, skipping insertion in model container [2023-09-01 11:04:09,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 11:04:09" (1/1) ... [2023-09-01 11:04:09,877 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 11:04:09,902 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 11:04:10,075 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_45-escape_racing.i[30176,30189] [2023-09-01 11:04:10,093 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 11:04:10,104 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 11:04:10,149 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_45-escape_racing.i[30176,30189] [2023-09-01 11:04:10,154 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 11:04:10,196 INFO L208 MainTranslator]: Completed translation [2023-09-01 11:04:10,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:04:10 WrapperNode [2023-09-01 11:04:10,216 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 11:04:10,217 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 11:04:10,217 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 11:04:10,217 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 11:04:10,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:04:10" (1/1) ... [2023-09-01 11:04:10,230 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:04:10" (1/1) ... [2023-09-01 11:04:10,242 INFO L138 Inliner]: procedures = 170, calls = 45, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2023-09-01 11:04:10,242 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 11:04:10,243 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 11:04:10,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 11:04:10,243 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 11:04:10,248 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:04:10" (1/1) ... [2023-09-01 11:04:10,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:04:10" (1/1) ... [2023-09-01 11:04:10,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:04:10" (1/1) ... [2023-09-01 11:04:10,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:04:10" (1/1) ... [2023-09-01 11:04:10,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:04:10" (1/1) ... [2023-09-01 11:04:10,255 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:04:10" (1/1) ... [2023-09-01 11:04:10,256 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:04:10" (1/1) ... [2023-09-01 11:04:10,257 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:04:10" (1/1) ... [2023-09-01 11:04:10,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 11:04:10,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 11:04:10,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 11:04:10,259 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 11:04:10,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:04:10" (1/1) ... [2023-09-01 11:04:10,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 11:04:10,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 11:04:10,285 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 11:04:10,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 11:04:10,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 11:04:10,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 11:04:10,314 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 11:04:10,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 11:04:10,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 11:04:10,314 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 11:04:10,315 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 11:04:10,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 11:04:10,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 11:04:10,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 11:04:10,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 11:04:10,316 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 11:04:10,396 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 11:04:10,398 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 11:04:10,561 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 11:04:10,566 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 11:04:10,567 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-09-01 11:04:10,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 11:04:10 BoogieIcfgContainer [2023-09-01 11:04:10,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 11:04:10,569 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 11:04:10,569 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 11:04:10,571 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 11:04:10,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 11:04:09" (1/3) ... [2023-09-01 11:04:10,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b0e214f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 11:04:10, skipping insertion in model container [2023-09-01 11:04:10,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:04:10" (2/3) ... [2023-09-01 11:04:10,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b0e214f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 11:04:10, skipping insertion in model container [2023-09-01 11:04:10,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 11:04:10" (3/3) ... [2023-09-01 11:04:10,575 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_45-escape_racing.i [2023-09-01 11:04:10,581 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 11:04:10,587 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 11:04:10,588 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 11:04:10,588 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 11:04:10,661 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 11:04:10,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 102 transitions, 212 flow [2023-09-01 11:04:10,759 INFO L130 PetriNetUnfolder]: 9/101 cut-off events. [2023-09-01 11:04:10,759 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 11:04:10,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 101 events. 9/101 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 149 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 55. Up to 3 conditions per place. [2023-09-01 11:04:10,763 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 102 transitions, 212 flow [2023-09-01 11:04:10,767 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 92 transitions, 187 flow [2023-09-01 11:04:10,771 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:04:10,788 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 92 transitions, 187 flow [2023-09-01 11:04:10,792 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 92 transitions, 187 flow [2023-09-01 11:04:10,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 92 transitions, 187 flow [2023-09-01 11:04:10,812 INFO L130 PetriNetUnfolder]: 9/92 cut-off events. [2023-09-01 11:04:10,812 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 11:04:10,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 92 events. 9/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 126 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 55. Up to 3 conditions per place. [2023-09-01 11:04:10,814 INFO L119 LiptonReduction]: Number of co-enabled transitions 1452 [2023-09-01 11:04:13,400 INFO L134 LiptonReduction]: Checked pairs total: 3012 [2023-09-01 11:04:13,401 INFO L136 LiptonReduction]: Total number of compositions: 77 [2023-09-01 11:04:13,409 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 11:04:13,413 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5274c9ba, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:04:13,413 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 11:04:13,416 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2023-09-01 11:04:13,416 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 11:04:13,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:04:13,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 11:04:13,416 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:04:13,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:04:13,420 INFO L85 PathProgramCache]: Analyzing trace with hash 360293902, now seen corresponding path program 1 times [2023-09-01 11:04:13,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:04:13,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578025520] [2023-09-01 11:04:13,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:04:13,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:04:13,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 11:04:13,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 11:04:13,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 11:04:13,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578025520] [2023-09-01 11:04:13,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578025520] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 11:04:13,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 11:04:13,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 11:04:13,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60352149] [2023-09-01 11:04:13,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 11:04:13,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 11:04:13,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 11:04:13,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 11:04:13,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 11:04:13,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 179 [2023-09-01 11:04:13,769 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 26 transitions, 55 flow. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:04:13,769 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 11:04:13,769 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 179 [2023-09-01 11:04:13,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 11:04:13,838 INFO L130 PetriNetUnfolder]: 41/125 cut-off events. [2023-09-01 11:04:13,839 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 11:04:13,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 125 events. 41/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 428 event pairs, 13 based on Foata normal form. 5/123 useless extension candidates. Maximal degree in co-relation 226. Up to 62 conditions per place. [2023-09-01 11:04:13,841 INFO L137 encePairwiseOnDemand]: 166/179 looper letters, 13 selfloop transitions, 2 changer transitions 11/27 dead transitions. [2023-09-01 11:04:13,842 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 27 transitions, 105 flow [2023-09-01 11:04:13,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 11:04:13,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 11:04:13,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 288 transitions. [2023-09-01 11:04:13,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5363128491620112 [2023-09-01 11:04:13,853 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 288 transitions. [2023-09-01 11:04:13,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 288 transitions. [2023-09-01 11:04:13,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 11:04:13,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 288 transitions. [2023-09-01 11:04:13,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:04:13,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:04:13,860 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:04:13,861 INFO L175 Difference]: Start difference. First operand has 22 places, 26 transitions, 55 flow. Second operand 3 states and 288 transitions. [2023-09-01 11:04:13,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 27 transitions, 105 flow [2023-09-01 11:04:13,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 27 transitions, 104 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 11:04:13,864 INFO L231 Difference]: Finished difference. Result has 24 places, 14 transitions, 40 flow [2023-09-01 11:04:13,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=40, PETRI_PLACES=24, PETRI_TRANSITIONS=14} [2023-09-01 11:04:13,867 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 2 predicate places. [2023-09-01 11:04:13,867 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 14 transitions, 40 flow [2023-09-01 11:04:13,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:04:13,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:04:13,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:04:13,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 11:04:13,868 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:04:13,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:04:13,869 INFO L85 PathProgramCache]: Analyzing trace with hash 717087026, now seen corresponding path program 1 times [2023-09-01 11:04:13,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:04:13,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087226316] [2023-09-01 11:04:13,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:04:13,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:04:13,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 11:04:13,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 11:04:13,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 11:04:13,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087226316] [2023-09-01 11:04:13,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087226316] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 11:04:13,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 11:04:13,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 11:04:13,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249593216] [2023-09-01 11:04:13,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 11:04:13,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 11:04:13,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 11:04:13,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 11:04:13,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 11:04:13,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 179 [2023-09-01 11:04:13,978 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 14 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:04:13,978 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 11:04:13,978 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 179 [2023-09-01 11:04:13,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 11:04:14,004 INFO L130 PetriNetUnfolder]: 10/41 cut-off events. [2023-09-01 11:04:14,005 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 11:04:14,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 41 events. 10/41 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 54 event pairs, 4 based on Foata normal form. 7/48 useless extension candidates. Maximal degree in co-relation 86. Up to 21 conditions per place. [2023-09-01 11:04:14,006 INFO L137 encePairwiseOnDemand]: 173/179 looper letters, 10 selfloop transitions, 6 changer transitions 1/18 dead transitions. [2023-09-01 11:04:14,006 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 18 transitions, 84 flow [2023-09-01 11:04:14,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 11:04:14,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 11:04:14,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 263 transitions. [2023-09-01 11:04:14,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897579143389199 [2023-09-01 11:04:14,010 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 263 transitions. [2023-09-01 11:04:14,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 263 transitions. [2023-09-01 11:04:14,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 11:04:14,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 263 transitions. [2023-09-01 11:04:14,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:04:14,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:04:14,014 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:04:14,014 INFO L175 Difference]: Start difference. First operand has 24 places, 14 transitions, 40 flow. Second operand 3 states and 263 transitions. [2023-09-01 11:04:14,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 18 transitions, 84 flow [2023-09-01 11:04:14,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 18 transitions, 78 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-09-01 11:04:14,025 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 56 flow [2023-09-01 11:04:14,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2023-09-01 11:04:14,026 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -1 predicate places. [2023-09-01 11:04:14,026 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 56 flow [2023-09-01 11:04:14,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 11:04:14,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:04:14,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:04:14,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 11:04:14,027 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:04:14,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:04:14,028 INFO L85 PathProgramCache]: Analyzing trace with hash 755391486, now seen corresponding path program 1 times [2023-09-01 11:04:14,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:04:14,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182200339] [2023-09-01 11:04:14,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:04:14,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:04:14,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:04:14,041 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:04:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:04:14,064 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:04:14,067 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:04:14,068 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-09-01 11:04:14,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 11:04:14,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 11:04:14,070 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-09-01 11:04:14,073 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 11:04:14,073 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 11:04:14,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 11:04:14 BasicIcfg [2023-09-01 11:04:14,099 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 11:04:14,099 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 11:04:14,099 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 11:04:14,099 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 11:04:14,100 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 11:04:10" (3/4) ... [2023-09-01 11:04:14,101 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-09-01 11:04:14,122 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 11:04:14,122 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 11:04:14,123 INFO L158 Benchmark]: Toolchain (without parser) took 4258.76ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 55.5MB in the beginning and 58.5MB in the end (delta: -3.0MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. [2023-09-01 11:04:14,123 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 56.6MB. Free memory is still 34.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 11:04:14,123 INFO L158 Benchmark]: CACSL2BoogieTranslator took 351.84ms. Allocated memory is still 79.7MB. Free memory was 55.5MB in the beginning and 55.8MB in the end (delta: -303.7kB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-09-01 11:04:14,123 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.28ms. Allocated memory is still 79.7MB. Free memory was 55.8MB in the beginning and 53.9MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 11:04:14,124 INFO L158 Benchmark]: Boogie Preprocessor took 15.61ms. Allocated memory is still 79.7MB. Free memory was 53.9MB in the beginning and 52.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 11:04:14,124 INFO L158 Benchmark]: RCFGBuilder took 309.24ms. Allocated memory is still 79.7MB. Free memory was 52.1MB in the beginning and 37.8MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-09-01 11:04:14,124 INFO L158 Benchmark]: TraceAbstraction took 3529.35ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 37.1MB in the beginning and 61.8MB in the end (delta: -24.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 11:04:14,125 INFO L158 Benchmark]: Witness Printer took 23.23ms. Allocated memory is still 96.5MB. Free memory was 61.8MB in the beginning and 58.5MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 11:04:14,126 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 56.6MB. Free memory is still 34.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 351.84ms. Allocated memory is still 79.7MB. Free memory was 55.5MB in the beginning and 55.8MB in the end (delta: -303.7kB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.28ms. Allocated memory is still 79.7MB. Free memory was 55.8MB in the beginning and 53.9MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 15.61ms. Allocated memory is still 79.7MB. Free memory was 53.9MB in the beginning and 52.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 309.24ms. Allocated memory is still 79.7MB. Free memory was 52.1MB in the beginning and 37.8MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 3529.35ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 37.1MB in the beginning and 61.8MB in the end (delta: -24.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 23.23ms. Allocated memory is still 96.5MB. Free memory was 61.8MB in the beginning and 58.5MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 87 PlacesBefore, 22 PlacesAfterwards, 92 TransitionsBefore, 26 TransitionsAfterwards, 1452 CoEnabledTransitionPairs, 6 FixpointIterations, 35 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 77 TotalNumberOfCompositions, 3012 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1298, independent: 1150, independent conditional: 0, independent unconditional: 1150, dependent: 148, dependent conditional: 0, dependent unconditional: 148, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 799, independent: 763, independent conditional: 0, independent unconditional: 763, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1298, independent: 387, independent conditional: 0, independent unconditional: 387, dependent: 112, dependent conditional: 0, dependent unconditional: 112, unknown: 799, unknown conditional: 0, unknown unconditional: 799] , Statistics on independence cache: Total cache size (in pairs): 34, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 691]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L696] 0 pthread_mutex_t __global_lock = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L697] 0 pthread_mutex_t mutex1 = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L698] 0 pthread_mutex_t mutex2 = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L707] 0 pthread_t id; [L708] 0 int i = 0; [L709] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, (void *) &i) VAL [__global_lock={3:0}, arg={6:0}, i={6:0}, id={7:0}, mutex1={4:0}, mutex2={5:0}, pthread_create(&id, ((void *)0), t_fun, (void *) &i)=-1] [L700] 1 int *p = (int *) arg; [L702] EXPR 1 \read(*p) [L702] 1 (*p)++ [L711] EXPR 0 \read(i) [L711] CALL 0 __VERIFIER_assert((i) == 0) [L691] COND TRUE 0 !(cond) [L691] 0 reach_error() VAL [\old(cond)=0, __global_lock={3:0}, arg={6:0}, arg={6:0}, cond=0, mutex1={4:0}, mutex2={5:0}, p={6:0}] - UnprovableResult [Line: 709]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 123 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.4s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 114 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 39 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 127 IncrementalHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 0 mSDtfsCounter, 127 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=2, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 42 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-09-01 11:04:14,140 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE