./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/38_rand_cas_vs_concur.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/38_rand_cas_vs_concur.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 628ef5ad19754647fb807fc1cc13e384334d380a6e3691b7b5f1842f42e5f662 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 19:18:15,161 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 19:18:15,164 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 19:18:15,185 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 19:18:15,189 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 19:18:15,190 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 19:18:15,191 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 19:18:15,194 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 19:18:15,196 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 19:18:15,197 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 19:18:15,198 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 19:18:15,199 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 19:18:15,200 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 19:18:15,201 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 19:18:15,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 19:18:15,202 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 19:18:15,203 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 19:18:15,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 19:18:15,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 19:18:15,205 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 19:18:15,206 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 19:18:15,209 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 19:18:15,212 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 19:18:15,213 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 19:18:15,214 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 19:18:15,215 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 19:18:15,219 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 19:18:15,219 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 19:18:15,220 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 19:18:15,220 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 19:18:15,221 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 19:18:15,222 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 19:18:15,223 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 19:18:15,223 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 19:18:15,224 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 19:18:15,225 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 19:18:15,225 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 19:18:15,226 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 19:18:15,226 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 19:18:15,226 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 19:18:15,227 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 19:18:15,228 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 19:18:15,230 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-04-18 19:18:15,249 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 19:18:15,249 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 19:18:15,250 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 19:18:15,250 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 19:18:15,250 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 19:18:15,251 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 19:18:15,251 INFO L138 SettingsManager]: * User list type=DISABLED [2022-04-18 19:18:15,251 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-04-18 19:18:15,251 INFO L138 SettingsManager]: * Explicit value domain=true [2022-04-18 19:18:15,252 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-04-18 19:18:15,252 INFO L138 SettingsManager]: * Octagon Domain=false [2022-04-18 19:18:15,252 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-04-18 19:18:15,252 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-04-18 19:18:15,252 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-04-18 19:18:15,252 INFO L138 SettingsManager]: * Interval Domain=false [2022-04-18 19:18:15,253 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-04-18 19:18:15,254 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-04-18 19:18:15,254 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-04-18 19:18:15,255 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 19:18:15,255 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 19:18:15,255 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 19:18:15,255 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 19:18:15,255 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 19:18:15,255 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 19:18:15,256 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 19:18:15,256 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 19:18:15,256 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 19:18:15,256 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 19:18:15,256 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 19:18:15,256 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 19:18:15,257 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 19:18:15,257 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 19:18:15,257 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 19:18:15,257 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 19:18:15,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 19:18:15,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 19:18:15,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 19:18:15,258 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 19:18:15,258 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-04-18 19:18:15,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 19:18:15,258 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 19:18:15,258 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-18 19:18:15,258 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-18 19:18:15,258 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 628ef5ad19754647fb807fc1cc13e384334d380a6e3691b7b5f1842f42e5f662 [2022-04-18 19:18:15,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 19:18:15,448 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 19:18:15,450 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 19:18:15,450 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 19:18:15,451 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 19:18:15,452 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/38_rand_cas_vs_concur.i [2022-04-18 19:18:15,504 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8cb40ad50/7c72bf7481ca4d7fad8fa935d1ac3416/FLAGa6dddb76c [2022-04-18 19:18:15,876 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 19:18:15,876 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/38_rand_cas_vs_concur.i [2022-04-18 19:18:15,883 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8cb40ad50/7c72bf7481ca4d7fad8fa935d1ac3416/FLAGa6dddb76c [2022-04-18 19:18:15,910 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8cb40ad50/7c72bf7481ca4d7fad8fa935d1ac3416 [2022-04-18 19:18:15,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 19:18:15,914 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 19:18:15,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 19:18:15,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 19:18:15,918 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 19:18:15,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:18:15" (1/1) ... [2022-04-18 19:18:15,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1988b41e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:18:15, skipping insertion in model container [2022-04-18 19:18:15,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:18:15" (1/1) ... [2022-04-18 19:18:15,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 19:18:15,960 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 19:18:16,276 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/38_rand_cas_vs_concur.i[30559,30572] [2022-04-18 19:18:16,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 19:18:16,283 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 19:18:16,317 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/38_rand_cas_vs_concur.i[30559,30572] [2022-04-18 19:18:16,321 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 19:18:16,346 INFO L208 MainTranslator]: Completed translation [2022-04-18 19:18:16,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:18:16 WrapperNode [2022-04-18 19:18:16,347 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 19:18:16,348 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 19:18:16,348 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 19:18:16,348 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 19:18:16,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:18:16" (1/1) ... [2022-04-18 19:18:16,377 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:18:16" (1/1) ... [2022-04-18 19:18:16,404 INFO L137 Inliner]: procedures = 170, calls = 24, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 127 [2022-04-18 19:18:16,405 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 19:18:16,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 19:18:16,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 19:18:16,407 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 19:18:16,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:18:16" (1/1) ... [2022-04-18 19:18:16,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:18:16" (1/1) ... [2022-04-18 19:18:16,423 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:18:16" (1/1) ... [2022-04-18 19:18:16,424 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:18:16" (1/1) ... [2022-04-18 19:18:16,436 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:18:16" (1/1) ... [2022-04-18 19:18:16,438 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:18:16" (1/1) ... [2022-04-18 19:18:16,440 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:18:16" (1/1) ... [2022-04-18 19:18:16,441 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 19:18:16,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 19:18:16,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 19:18:16,442 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 19:18:16,443 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:18:16" (1/1) ... [2022-04-18 19:18:16,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 19:18:16,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 19:18:16,488 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 19:18:16,501 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 19:18:16,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 19:18:16,533 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-04-18 19:18:16,534 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-04-18 19:18:16,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 19:18:16,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 19:18:16,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 19:18:16,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 19:18:16,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 19:18:16,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 19:18:16,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 19:18:16,535 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 19:18:16,666 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 19:18:16,667 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 19:18:16,827 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 19:18:16,895 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 19:18:16,895 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-04-18 19:18:16,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:18:16 BoogieIcfgContainer [2022-04-18 19:18:16,897 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 19:18:16,898 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 19:18:16,899 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 19:18:16,901 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 19:18:16,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:18:15" (1/3) ... [2022-04-18 19:18:16,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@630434b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:18:16, skipping insertion in model container [2022-04-18 19:18:16,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:18:16" (2/3) ... [2022-04-18 19:18:16,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@630434b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:18:16, skipping insertion in model container [2022-04-18 19:18:16,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:18:16" (3/3) ... [2022-04-18 19:18:16,903 INFO L111 eAbstractionObserver]: Analyzing ICFG 38_rand_cas_vs_concur.i [2022-04-18 19:18:16,906 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 19:18:16,906 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 19:18:16,906 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-04-18 19:18:16,906 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 19:18:16,958 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 19:18:16,999 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 19:18:17,004 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 19:18:17,004 INFO L341 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-04-18 19:18:17,013 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 19:18:17,034 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 100 places, 105 transitions, 215 flow [2022-04-18 19:18:17,036 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 100 places, 105 transitions, 215 flow [2022-04-18 19:18:17,037 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 100 places, 105 transitions, 215 flow [2022-04-18 19:18:17,072 INFO L129 PetriNetUnfolder]: 9/116 cut-off events. [2022-04-18 19:18:17,072 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 19:18:17,076 INFO L84 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 116 events. 9/116 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 121 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 87. Up to 4 conditions per place. [2022-04-18 19:18:17,079 INFO L116 LiptonReduction]: Number of co-enabled transitions 2072 [2022-04-18 19:18:38,638 INFO L131 LiptonReduction]: Checked pairs total: 1956 [2022-04-18 19:18:38,638 INFO L133 LiptonReduction]: Total number of compositions: 127 [2022-04-18 19:18:38,643 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 19 places, 19 transitions, 43 flow [2022-04-18 19:18:38,656 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 57 states, 44 states have (on average 2.477272727272727) internal successors, (109), 56 states have internal predecessors, (109), 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 19:18:38,658 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 44 states have (on average 2.477272727272727) internal successors, (109), 56 states have internal predecessors, (109), 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 19:18:38,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-04-18 19:18:38,662 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:18:38,663 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-04-18 19:18:38,663 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2022-04-18 19:18:38,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:18:38,666 INFO L85 PathProgramCache]: Analyzing trace with hash 546907622, now seen corresponding path program 1 times [2022-04-18 19:18:38,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:18:38,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253917734] [2022-04-18 19:18:38,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:18:38,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:18:38,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:18:38,818 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 19:18:38,819 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:18:38,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253917734] [2022-04-18 19:18:38,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253917734] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:18:38,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:18:38,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-04-18 19:18:38,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640044045] [2022-04-18 19:18:38,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:18:38,824 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 19:18:38,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:18:38,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 19:18:38,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 19:18:38,842 INFO L87 Difference]: Start difference. First operand has 57 states, 44 states have (on average 2.477272727272727) internal successors, (109), 56 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 5.0) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:18:38,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:18:38,945 INFO L93 Difference]: Finished difference Result 23 states and 42 transitions. [2022-04-18 19:18:38,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 19:18:38,947 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 5.0) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-04-18 19:18:38,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:18:38,952 INFO L225 Difference]: With dead ends: 23 [2022-04-18 19:18:38,952 INFO L226 Difference]: Without dead ends: 23 [2022-04-18 19:18:38,953 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 19:18:38,956 INFO L913 BasicCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-18 19:18:38,957 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-18 19:18:38,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-04-18 19:18:38,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-04-18 19:18:38,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 22 states have internal predecessors, (42), 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 19:18:38,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 42 transitions. [2022-04-18 19:18:38,978 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 42 transitions. Word has length 5 [2022-04-18 19:18:38,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:18:38,978 INFO L478 AbstractCegarLoop]: Abstraction has 23 states and 42 transitions. [2022-04-18 19:18:38,979 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 5.0) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:18:38,979 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 42 transitions. [2022-04-18 19:18:38,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-04-18 19:18:38,979 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:18:38,980 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-04-18 19:18:38,980 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 19:18:38,980 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2022-04-18 19:18:38,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:18:38,981 INFO L85 PathProgramCache]: Analyzing trace with hash -225811873, now seen corresponding path program 1 times [2022-04-18 19:18:38,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:18:38,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953548211] [2022-04-18 19:18:38,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:18:38,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:18:39,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:18:39,008 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 19:18:39,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:18:39,036 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-04-18 19:18:39,038 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 19:18:39,041 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-04-18 19:18:39,045 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2022-04-18 19:18:39,045 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2022-04-18 19:18:39,046 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2022-04-18 19:18:39,046 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2022-04-18 19:18:39,046 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2022-04-18 19:18:39,046 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2022-04-18 19:18:39,047 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2022-04-18 19:18:39,052 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2022-04-18 19:18:39,052 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2022-04-18 19:18:39,052 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2022-04-18 19:18:39,052 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2022-04-18 19:18:39,052 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2022-04-18 19:18:39,053 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 19:18:39,055 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1] [2022-04-18 19:18:39,056 WARN L232 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 19:18:39,056 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-04-18 19:18:39,090 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 19:18:39,097 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 19:18:39,102 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 19:18:39,102 INFO L341 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-04-18 19:18:39,105 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 19:18:39,105 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 170 places, 180 transitions, 372 flow [2022-04-18 19:18:39,106 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 170 places, 180 transitions, 372 flow [2022-04-18 19:18:39,106 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 170 places, 180 transitions, 372 flow [2022-04-18 19:18:39,144 INFO L129 PetriNetUnfolder]: 17/204 cut-off events. [2022-04-18 19:18:39,147 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-04-18 19:18:39,151 INFO L84 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 204 events. 17/204 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 463 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 161. Up to 6 conditions per place. [2022-04-18 19:18:39,159 INFO L116 LiptonReduction]: Number of co-enabled transitions 15244 [2022-04-18 19:20:02,556 INFO L131 LiptonReduction]: Checked pairs total: 29854 [2022-04-18 19:20:02,556 INFO L133 LiptonReduction]: Total number of compositions: 176 [2022-04-18 19:20:02,557 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 56 places, 58 transitions, 128 flow [2022-04-18 19:20:02,626 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3141 states, 3038 states have (on average 3.119486504279131) internal successors, (9477), 3140 states have internal predecessors, (9477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:20:02,633 INFO L276 IsEmpty]: Start isEmpty. Operand has 3141 states, 3038 states have (on average 3.119486504279131) internal successors, (9477), 3140 states have internal predecessors, (9477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:20:02,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-04-18 19:20:02,635 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:20:02,635 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 19:20:02,635 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2022-04-18 19:20:02,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:20:02,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1089492022, now seen corresponding path program 1 times [2022-04-18 19:20:02,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:20:02,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039083295] [2022-04-18 19:20:02,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:20:02,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:20:02,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:20:02,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 19:20:02,723 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:20:02,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039083295] [2022-04-18 19:20:02,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039083295] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:20:02,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:20:02,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 19:20:02,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123405325] [2022-04-18 19:20:02,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:20:02,724 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 19:20:02,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:20:02,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 19:20:02,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 19:20:02,732 INFO L87 Difference]: Start difference. First operand has 3141 states, 3038 states have (on average 3.119486504279131) internal successors, (9477), 3140 states have internal predecessors, (9477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:20:03,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:20:03,365 INFO L93 Difference]: Finished difference Result 2431 states and 7176 transitions. [2022-04-18 19:20:03,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 19:20:03,366 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-04-18 19:20:03,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:20:03,411 INFO L225 Difference]: With dead ends: 2431 [2022-04-18 19:20:03,411 INFO L226 Difference]: Without dead ends: 2431 [2022-04-18 19:20:03,411 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 19:20:03,414 INFO L913 BasicCegarLoop]: 39 mSDtfsCounter, 104 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-18 19:20:03,414 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 74 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-18 19:20:03,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2022-04-18 19:20:03,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 2286. [2022-04-18 19:20:03,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2286 states, 2278 states have (on average 2.9060579455662863) internal successors, (6620), 2285 states have internal predecessors, (6620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:20:03,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2286 states to 2286 states and 6620 transitions. [2022-04-18 19:20:03,500 INFO L78 Accepts]: Start accepts. Automaton has 2286 states and 6620 transitions. Word has length 10 [2022-04-18 19:20:03,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:20:03,502 INFO L478 AbstractCegarLoop]: Abstraction has 2286 states and 6620 transitions. [2022-04-18 19:20:03,502 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:20:03,502 INFO L276 IsEmpty]: Start isEmpty. Operand 2286 states and 6620 transitions. [2022-04-18 19:20:03,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-18 19:20:03,503 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:20:03,503 INFO L499 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-04-18 19:20:03,504 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 19:20:03,506 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2022-04-18 19:20:03,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:20:03,506 INFO L85 PathProgramCache]: Analyzing trace with hash 745730747, now seen corresponding path program 1 times [2022-04-18 19:20:03,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:20:03,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160072079] [2022-04-18 19:20:03,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:20:03,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:20:03,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:20:03,519 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 19:20:03,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:20:03,536 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-04-18 19:20:03,536 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 19:20:03,537 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2022-04-18 19:20:03,537 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (17 of 19 remaining) [2022-04-18 19:20:03,537 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (16 of 19 remaining) [2022-04-18 19:20:03,537 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (15 of 19 remaining) [2022-04-18 19:20:03,537 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (14 of 19 remaining) [2022-04-18 19:20:03,537 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (13 of 19 remaining) [2022-04-18 19:20:03,537 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (12 of 19 remaining) [2022-04-18 19:20:03,538 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 19 remaining) [2022-04-18 19:20:03,538 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 19 remaining) [2022-04-18 19:20:03,538 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 19 remaining) [2022-04-18 19:20:03,538 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 19 remaining) [2022-04-18 19:20:03,538 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 19 remaining) [2022-04-18 19:20:03,538 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 19 remaining) [2022-04-18 19:20:03,538 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 19 remaining) [2022-04-18 19:20:03,539 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 19 remaining) [2022-04-18 19:20:03,539 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 19 remaining) [2022-04-18 19:20:03,539 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 19 remaining) [2022-04-18 19:20:03,539 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 19 remaining) [2022-04-18 19:20:03,539 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (0 of 19 remaining) [2022-04-18 19:20:03,539 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 19:20:03,540 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1] [2022-04-18 19:20:03,540 WARN L232 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 19:20:03,540 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-04-18 19:20:03,566 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 19:20:03,567 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 19:20:03,568 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-18 19:20:03,568 INFO L341 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-04-18 19:20:03,569 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 19:20:03,569 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 240 places, 255 transitions, 531 flow [2022-04-18 19:20:03,569 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 240 places, 255 transitions, 531 flow [2022-04-18 19:20:03,569 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 240 places, 255 transitions, 531 flow [2022-04-18 19:20:03,599 INFO L129 PetriNetUnfolder]: 25/292 cut-off events. [2022-04-18 19:20:03,600 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-04-18 19:20:03,603 INFO L84 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 292 events. 25/292 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 900 event pairs, 0 based on Foata normal form. 0/245 useless extension candidates. Maximal degree in co-relation 235. Up to 8 conditions per place. [2022-04-18 19:20:03,617 INFO L116 LiptonReduction]: Number of co-enabled transitions 39516 [2022-04-18 19:22:40,330 INFO L131 LiptonReduction]: Checked pairs total: 86892 [2022-04-18 19:22:40,330 INFO L133 LiptonReduction]: Total number of compositions: 260 [2022-04-18 19:22:40,331 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 80 places, 83 transitions, 187 flow [2022-04-18 19:22:42,379 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 69307 states, 68568 states have (on average 4.152607630381519) internal successors, (284736), 69306 states have internal predecessors, (284736), 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 19:22:42,639 INFO L276 IsEmpty]: Start isEmpty. Operand has 69307 states, 68568 states have (on average 4.152607630381519) internal successors, (284736), 69306 states have internal predecessors, (284736), 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 19:22:42,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-04-18 19:22:42,641 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:22:42,642 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 19:22:42,643 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2022-04-18 19:22:42,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:22:42,645 INFO L85 PathProgramCache]: Analyzing trace with hash -61312867, now seen corresponding path program 1 times [2022-04-18 19:22:42,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:22:42,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005545451] [2022-04-18 19:22:42,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:22:42,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:22:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:22:42,881 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 19:22:42,882 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:22:42,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005545451] [2022-04-18 19:22:42,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005545451] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:22:42,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:22:42,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 19:22:42,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134991132] [2022-04-18 19:22:42,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:22:42,883 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 19:22:42,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:22:42,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 19:22:42,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 19:22:42,998 INFO L87 Difference]: Start difference. First operand has 69307 states, 68568 states have (on average 4.152607630381519) internal successors, (284736), 69306 states have internal predecessors, (284736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:22:44,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:22:44,240 INFO L93 Difference]: Finished difference Result 54267 states and 217286 transitions. [2022-04-18 19:22:44,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 19:22:44,242 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-04-18 19:22:44,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:22:44,980 INFO L225 Difference]: With dead ends: 54267 [2022-04-18 19:22:44,980 INFO L226 Difference]: Without dead ends: 54267 [2022-04-18 19:22:44,980 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 19:22:44,982 INFO L913 BasicCegarLoop]: 51 mSDtfsCounter, 146 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-18 19:22:44,983 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 87 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-18 19:22:45,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54267 states. [2022-04-18 19:22:46,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54267 to 50000. [2022-04-18 19:22:46,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50000 states, 49974 states have (on average 3.940929283227278) internal successors, (196944), 49999 states have internal predecessors, (196944), 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 19:22:46,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50000 states to 50000 states and 196944 transitions. [2022-04-18 19:22:46,996 INFO L78 Accepts]: Start accepts. Automaton has 50000 states and 196944 transitions. Word has length 10 [2022-04-18 19:22:46,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:22:46,997 INFO L478 AbstractCegarLoop]: Abstraction has 50000 states and 196944 transitions. [2022-04-18 19:22:47,001 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:22:47,001 INFO L276 IsEmpty]: Start isEmpty. Operand 50000 states and 196944 transitions. [2022-04-18 19:22:47,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-04-18 19:22:47,006 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:22:47,006 INFO L499 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-04-18 19:22:47,007 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-18 19:22:47,007 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2022-04-18 19:22:47,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:22:47,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1947353612, now seen corresponding path program 1 times [2022-04-18 19:22:47,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:22:47,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229001033] [2022-04-18 19:22:47,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:22:47,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:22:47,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:22:47,022 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 19:22:47,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:22:47,032 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-04-18 19:22:47,032 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 19:22:47,033 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2022-04-18 19:22:47,033 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2022-04-18 19:22:47,033 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2022-04-18 19:22:47,033 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2022-04-18 19:22:47,033 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2022-04-18 19:22:47,033 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2022-04-18 19:22:47,034 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2022-04-18 19:22:47,034 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2022-04-18 19:22:47,034 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2022-04-18 19:22:47,034 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2022-04-18 19:22:47,034 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2022-04-18 19:22:47,034 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2022-04-18 19:22:47,034 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2022-04-18 19:22:47,034 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2022-04-18 19:22:47,035 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2022-04-18 19:22:47,035 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2022-04-18 19:22:47,035 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2022-04-18 19:22:47,035 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2022-04-18 19:22:47,035 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2022-04-18 19:22:47,035 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2022-04-18 19:22:47,035 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2022-04-18 19:22:47,035 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2022-04-18 19:22:47,036 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2022-04-18 19:22:47,036 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2022-04-18 19:22:47,036 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2022-04-18 19:22:47,036 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-18 19:22:47,036 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1] [2022-04-18 19:22:47,036 WARN L232 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 19:22:47,036 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-04-18 19:22:47,069 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 19:22:47,070 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 19:22:47,070 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 19:22:47,071 INFO L341 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-04-18 19:22:47,072 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 19:22:47,072 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 310 places, 330 transitions, 692 flow [2022-04-18 19:22:47,072 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 310 places, 330 transitions, 692 flow [2022-04-18 19:22:47,072 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 310 places, 330 transitions, 692 flow [2022-04-18 19:22:47,143 INFO L129 PetriNetUnfolder]: 33/380 cut-off events. [2022-04-18 19:22:47,159 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-04-18 19:22:47,166 INFO L84 FinitePrefix]: Finished finitePrefix Result has 403 conditions, 380 events. 33/380 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1373 event pairs, 0 based on Foata normal form. 0/318 useless extension candidates. Maximal degree in co-relation 309. Up to 10 conditions per place. [2022-04-18 19:22:47,188 INFO L116 LiptonReduction]: Number of co-enabled transitions 74888 [2022-04-18 19:28:27,653 INFO L131 LiptonReduction]: Checked pairs total: 148792 [2022-04-18 19:28:27,653 INFO L133 LiptonReduction]: Total number of compositions: 333 [2022-04-18 19:28:27,654 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 104 places, 108 transitions, 248 flow