./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/safestack_relacy.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-complex/safestack_relacy.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 1d61eb304445c3cb39dfadfa4748d680ea5f0f4958f8bc176e8bc3c77c47e674 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 18:48:04,203 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 18:48:04,205 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 18:48:04,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 18:48:04,249 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 18:48:04,251 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 18:48:04,255 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 18:48:04,261 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 18:48:04,263 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 18:48:04,266 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 18:48:04,267 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 18:48:04,270 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 18:48:04,271 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 18:48:04,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 18:48:04,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 18:48:04,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 18:48:04,282 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 18:48:04,283 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 18:48:04,285 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 18:48:04,290 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 18:48:04,294 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 18:48:04,296 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 18:48:04,297 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 18:48:04,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 18:48:04,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 18:48:04,301 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 18:48:04,303 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 18:48:04,304 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 18:48:04,305 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 18:48:04,306 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 18:48:04,307 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 18:48:04,308 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 18:48:04,309 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 18:48:04,309 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 18:48:04,310 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 18:48:04,311 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 18:48:04,312 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 18:48:04,312 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 18:48:04,313 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 18:48:04,313 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 18:48:04,314 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 18:48:04,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 18:48:04,317 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-04-18 18:48:04,350 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 18:48:04,351 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 18:48:04,351 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 18:48:04,351 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 18:48:04,352 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 18:48:04,352 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 18:48:04,352 INFO L138 SettingsManager]: * User list type=DISABLED [2022-04-18 18:48:04,352 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-04-18 18:48:04,353 INFO L138 SettingsManager]: * Explicit value domain=true [2022-04-18 18:48:04,353 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-04-18 18:48:04,354 INFO L138 SettingsManager]: * Octagon Domain=false [2022-04-18 18:48:04,354 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-04-18 18:48:04,354 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-04-18 18:48:04,354 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-04-18 18:48:04,354 INFO L138 SettingsManager]: * Interval Domain=false [2022-04-18 18:48:04,355 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-04-18 18:48:04,355 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-04-18 18:48:04,355 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-04-18 18:48:04,356 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 18:48:04,357 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 18:48:04,357 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 18:48:04,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 18:48:04,357 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 18:48:04,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 18:48:04,357 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 18:48:04,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 18:48:04,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 18:48:04,358 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 18:48:04,358 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 18:48:04,359 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 18:48:04,359 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 18:48:04,359 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 18:48:04,359 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 18:48:04,359 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 18:48:04,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 18:48:04,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 18:48:04,360 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 18:48:04,360 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 18:48:04,360 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-04-18 18:48:04,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 18:48:04,361 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 18:48:04,361 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-18 18:48:04,361 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-18 18:48:04,361 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d61eb304445c3cb39dfadfa4748d680ea5f0f4958f8bc176e8bc3c77c47e674 [2022-04-18 18:48:04,612 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 18:48:04,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 18:48:04,634 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 18:48:04,635 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 18:48:04,636 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 18:48:04,637 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/safestack_relacy.i [2022-04-18 18:48:04,698 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c8ec6086f/4c92e0a899004dce9bf8bc189a27e987/FLAG43ab0edc4 [2022-04-18 18:48:05,217 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 18:48:05,217 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/safestack_relacy.i [2022-04-18 18:48:05,238 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c8ec6086f/4c92e0a899004dce9bf8bc189a27e987/FLAG43ab0edc4 [2022-04-18 18:48:05,718 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c8ec6086f/4c92e0a899004dce9bf8bc189a27e987 [2022-04-18 18:48:05,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 18:48:05,722 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 18:48:05,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 18:48:05,723 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 18:48:05,726 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 18:48:05,728 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:48:05" (1/1) ... [2022-04-18 18:48:05,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@386d4088 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:48:05, skipping insertion in model container [2022-04-18 18:48:05,729 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:48:05" (1/1) ... [2022-04-18 18:48:05,736 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 18:48:05,778 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 18:48:06,345 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-complex/safestack_relacy.i[78860,78873] [2022-04-18 18:48:06,355 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 18:48:06,364 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 18:48:06,431 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-complex/safestack_relacy.i[78860,78873] [2022-04-18 18:48:06,434 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 18:48:06,555 INFO L208 MainTranslator]: Completed translation [2022-04-18 18:48:06,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:48:06 WrapperNode [2022-04-18 18:48:06,556 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 18:48:06,557 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 18:48:06,558 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 18:48:06,558 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 18:48:06,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:48:06" (1/1) ... [2022-04-18 18:48:06,606 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:48:06" (1/1) ... [2022-04-18 18:48:06,671 INFO L137 Inliner]: procedures = 481, calls = 74, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 471 [2022-04-18 18:48:06,675 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 18:48:06,676 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 18:48:06,677 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 18:48:06,677 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 18:48:06,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:48:06" (1/1) ... [2022-04-18 18:48:06,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:48:06" (1/1) ... [2022-04-18 18:48:06,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:48:06" (1/1) ... [2022-04-18 18:48:06,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:48:06" (1/1) ... [2022-04-18 18:48:06,750 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:48:06" (1/1) ... [2022-04-18 18:48:06,760 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:48:06" (1/1) ... [2022-04-18 18:48:06,765 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:48:06" (1/1) ... [2022-04-18 18:48:06,773 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 18:48:06,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 18:48:06,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 18:48:06,775 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 18:48:06,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:48:06" (1/1) ... [2022-04-18 18:48:06,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 18:48:06,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 18:48:06,840 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 18:48:06,851 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 18:48:06,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-04-18 18:48:06,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 18:48:06,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-04-18 18:48:06,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 18:48:06,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 18:48:06,877 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2022-04-18 18:48:06,877 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2022-04-18 18:48:06,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 18:48:06,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 18:48:06,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 18:48:06,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 18:48:06,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 18:48:06,879 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 18:48:07,183 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 18:48:07,185 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 18:48:07,668 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 18:48:07,926 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 18:48:07,927 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2022-04-18 18:48:07,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:48:07 BoogieIcfgContainer [2022-04-18 18:48:07,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 18:48:07,944 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 18:48:07,944 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 18:48:07,947 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 18:48:07,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 06:48:05" (1/3) ... [2022-04-18 18:48:07,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26bb275a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:48:07, skipping insertion in model container [2022-04-18 18:48:07,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:48:06" (2/3) ... [2022-04-18 18:48:07,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26bb275a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:48:07, skipping insertion in model container [2022-04-18 18:48:07,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:48:07" (3/3) ... [2022-04-18 18:48:07,954 INFO L111 eAbstractionObserver]: Analyzing ICFG safestack_relacy.i [2022-04-18 18:48:07,961 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 18:48:07,961 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 18:48:07,963 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-04-18 18:48:07,963 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 18:48:08,102 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-04-18 18:48:08,154 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 18:48:08,162 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 18:48:08,162 INFO L341 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2022-04-18 18:48:08,181 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 18:48:08,192 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 337 places, 351 transitions, 710 flow [2022-04-18 18:48:08,195 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 337 places, 351 transitions, 710 flow [2022-04-18 18:48:08,197 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 337 places, 351 transitions, 710 flow [2022-04-18 18:48:08,366 INFO L129 PetriNetUnfolder]: 19/372 cut-off events. [2022-04-18 18:48:08,367 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 18:48:08,375 INFO L84 FinitePrefix]: Finished finitePrefix Result has 378 conditions, 372 events. 19/372 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 697 event pairs, 0 based on Foata normal form. 0/317 useless extension candidates. Maximal degree in co-relation 270. Up to 4 conditions per place. [2022-04-18 18:48:08,387 INFO L116 LiptonReduction]: Number of co-enabled transitions 13176 [2022-04-18 18:49:33,965 INFO L131 LiptonReduction]: Checked pairs total: 59079 [2022-04-18 18:49:33,966 INFO L133 LiptonReduction]: Total number of compositions: 531 [2022-04-18 18:49:33,973 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 94 places, 103 transitions, 214 flow [2022-04-18 18:49:34,033 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 953 states, 836 states have (on average 2.3157894736842106) internal successors, (1936), 952 states have internal predecessors, (1936), 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 18:49:34,038 INFO L276 IsEmpty]: Start isEmpty. Operand has 953 states, 836 states have (on average 2.3157894736842106) internal successors, (1936), 952 states have internal predecessors, (1936), 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 18:49:34,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-04-18 18:49:34,043 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:49:34,044 INFO L499 BasicCegarLoop]: trace histogram [1] [2022-04-18 18:49:34,044 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2022-04-18 18:49:34,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:49:34,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1900, now seen corresponding path program 1 times [2022-04-18 18:49:34,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:49:34,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338317291] [2022-04-18 18:49:34,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:49:34,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:49:34,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:49:34,258 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 18:49:34,264 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:49:34,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338317291] [2022-04-18 18:49:34,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338317291] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 18:49:34,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 18:49:34,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-04-18 18:49:34,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047927095] [2022-04-18 18:49:34,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 18:49:34,271 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 18:49:34,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:49:34,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 18:49:34,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 18:49:34,298 INFO L87 Difference]: Start difference. First operand has 953 states, 836 states have (on average 2.3157894736842106) internal successors, (1936), 952 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:49:34,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:49:34,549 INFO L93 Difference]: Finished difference Result 676 states and 1355 transitions. [2022-04-18 18:49:34,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 18:49:34,552 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2022-04-18 18:49:34,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:49:34,566 INFO L225 Difference]: With dead ends: 676 [2022-04-18 18:49:34,566 INFO L226 Difference]: Without dead ends: 674 [2022-04-18 18:49:34,567 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 18:49:34,570 INFO L913 BasicCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-18 18:49:34,571 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-18 18:49:34,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2022-04-18 18:49:34,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 674. [2022-04-18 18:49:34,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 647 states have (on average 2.089644513137558) internal successors, (1352), 673 states have internal predecessors, (1352), 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 18:49:34,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1352 transitions. [2022-04-18 18:49:34,644 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 1352 transitions. Word has length 1 [2022-04-18 18:49:34,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:49:34,645 INFO L478 AbstractCegarLoop]: Abstraction has 674 states and 1352 transitions. [2022-04-18 18:49:34,645 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:49:34,645 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 1352 transitions. [2022-04-18 18:49:34,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-04-18 18:49:34,646 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:49:34,646 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2022-04-18 18:49:34,646 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 18:49:34,647 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2022-04-18 18:49:34,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:49:34,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1148410597, now seen corresponding path program 1 times [2022-04-18 18:49:34,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:49:34,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747168019] [2022-04-18 18:49:34,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:49:34,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:49:34,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:49:34,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-18 18:49:34,830 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:49:34,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747168019] [2022-04-18 18:49:34,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747168019] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 18:49:34,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 18:49:34,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 18:49:34,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6218884] [2022-04-18 18:49:34,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 18:49:34,835 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 18:49:34,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:49:34,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 18:49:34,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 18:49:34,840 INFO L87 Difference]: Start difference. First operand 674 states and 1352 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:49:35,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:49:35,165 INFO L93 Difference]: Finished difference Result 675 states and 1353 transitions. [2022-04-18 18:49:35,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 18:49:35,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-04-18 18:49:35,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:49:35,169 INFO L225 Difference]: With dead ends: 675 [2022-04-18 18:49:35,170 INFO L226 Difference]: Without dead ends: 675 [2022-04-18 18:49:35,170 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 18:49:35,171 INFO L913 BasicCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-18 18:49:35,171 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-18 18:49:35,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2022-04-18 18:49:35,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 675. [2022-04-18 18:49:35,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 648 states have (on average 2.087962962962963) internal successors, (1353), 674 states have internal predecessors, (1353), 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 18:49:35,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1353 transitions. [2022-04-18 18:49:35,211 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1353 transitions. Word has length 7 [2022-04-18 18:49:35,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:49:35,212 INFO L478 AbstractCegarLoop]: Abstraction has 675 states and 1353 transitions. [2022-04-18 18:49:35,212 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:49:35,212 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1353 transitions. [2022-04-18 18:49:35,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-04-18 18:49:35,213 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:49:35,213 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-04-18 18:49:35,213 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 18:49:35,214 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2022-04-18 18:49:35,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:49:35,215 INFO L85 PathProgramCache]: Analyzing trace with hash 672805581, now seen corresponding path program 1 times [2022-04-18 18:49:35,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:49:35,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938582521] [2022-04-18 18:49:35,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:49:35,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:49:35,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:49:35,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-18 18:49:35,378 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:49:35,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938582521] [2022-04-18 18:49:35,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938582521] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 18:49:35,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502839329] [2022-04-18 18:49:35,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:49:35,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 18:49:35,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 18:49:35,383 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 18:49:35,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-18 18:49:35,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:49:35,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-18 18:49:35,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 18:49:35,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-18 18:49:35,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 18:49:35,711 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-18 18:49:35,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502839329] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 18:49:35,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2110968729] [2022-04-18 18:49:35,718 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1603) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:595) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:349) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:331) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:411) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:301) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:172) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:153) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-04-18 18:49:35,719 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-18 18:49:35,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2022-04-18 18:49:35,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399810740] [2022-04-18 18:49:35,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-18 18:49:35,720 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-18 18:49:35,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:49:35,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-18 18:49:35,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-04-18 18:49:35,721 INFO L87 Difference]: Start difference. First operand 675 states and 1353 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:49:36,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:49:36,431 INFO L93 Difference]: Finished difference Result 676 states and 1354 transitions. [2022-04-18 18:49:36,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-18 18:49:36,432 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-04-18 18:49:36,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:49:36,435 INFO L225 Difference]: With dead ends: 676 [2022-04-18 18:49:36,436 INFO L226 Difference]: Without dead ends: 676 [2022-04-18 18:49:36,436 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-04-18 18:49:36,437 INFO L913 BasicCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-18 18:49:36,437 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 132 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-18 18:49:36,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2022-04-18 18:49:36,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 676. [2022-04-18 18:49:36,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 649 states have (on average 2.086286594761171) internal successors, (1354), 675 states have internal predecessors, (1354), 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 18:49:36,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 1354 transitions. [2022-04-18 18:49:36,455 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 1354 transitions. Word has length 8 [2022-04-18 18:49:36,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:49:36,456 INFO L478 AbstractCegarLoop]: Abstraction has 676 states and 1354 transitions. [2022-04-18 18:49:36,456 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:49:36,456 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 1354 transitions. [2022-04-18 18:49:36,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-04-18 18:49:36,457 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:49:36,457 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-04-18 18:49:36,484 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-04-18 18:49:36,678 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 18:49:36,678 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2022-04-18 18:49:36,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:49:36,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1186048027, now seen corresponding path program 2 times [2022-04-18 18:49:36,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:49:36,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096061146] [2022-04-18 18:49:36,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:49:36,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:49:36,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 18:49:36,728 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 18:49:36,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 18:49:36,787 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-04-18 18:49:36,788 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 18:49:36,789 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (59 of 60 remaining) [2022-04-18 18:49:36,790 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (58 of 60 remaining) [2022-04-18 18:49:36,791 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (57 of 60 remaining) [2022-04-18 18:49:36,791 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (56 of 60 remaining) [2022-04-18 18:49:36,791 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (55 of 60 remaining) [2022-04-18 18:49:36,791 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (54 of 60 remaining) [2022-04-18 18:49:36,791 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr14ASSERT_VIOLATIONDATA_RACE (53 of 60 remaining) [2022-04-18 18:49:36,791 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr15ASSERT_VIOLATIONDATA_RACE (52 of 60 remaining) [2022-04-18 18:49:36,792 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (51 of 60 remaining) [2022-04-18 18:49:36,792 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr16ASSERT_VIOLATIONDATA_RACE (50 of 60 remaining) [2022-04-18 18:49:36,793 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (49 of 60 remaining) [2022-04-18 18:49:36,793 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr17ASSERT_VIOLATIONDATA_RACE (48 of 60 remaining) [2022-04-18 18:49:36,793 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (47 of 60 remaining) [2022-04-18 18:49:36,793 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (46 of 60 remaining) [2022-04-18 18:49:36,794 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr24ASSERT_VIOLATIONDATA_RACE (45 of 60 remaining) [2022-04-18 18:49:36,794 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr25ASSERT_VIOLATIONDATA_RACE (44 of 60 remaining) [2022-04-18 18:49:36,795 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr26ASSERT_VIOLATIONDATA_RACE (43 of 60 remaining) [2022-04-18 18:49:36,795 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr18ASSERT_VIOLATIONDATA_RACE (42 of 60 remaining) [2022-04-18 18:49:36,795 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr19ASSERT_VIOLATIONDATA_RACE (41 of 60 remaining) [2022-04-18 18:49:36,795 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr20ASSERT_VIOLATIONDATA_RACE (40 of 60 remaining) [2022-04-18 18:49:36,796 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr21ASSERT_VIOLATIONDATA_RACE (39 of 60 remaining) [2022-04-18 18:49:36,796 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr22ASSERT_VIOLATIONDATA_RACE (38 of 60 remaining) [2022-04-18 18:49:36,797 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr23ASSERT_VIOLATIONDATA_RACE (37 of 60 remaining) [2022-04-18 18:49:36,798 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4ASSERT_VIOLATIONDATA_RACE (36 of 60 remaining) [2022-04-18 18:49:36,798 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr5ASSERT_VIOLATIONDATA_RACE (35 of 60 remaining) [2022-04-18 18:49:36,798 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr6ASSERT_VIOLATIONDATA_RACE (34 of 60 remaining) [2022-04-18 18:49:36,798 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr7ASSERT_VIOLATIONDATA_RACE (33 of 60 remaining) [2022-04-18 18:49:36,798 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr8ASSERT_VIOLATIONDATA_RACE (32 of 60 remaining) [2022-04-18 18:49:36,799 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr9ASSERT_VIOLATIONDATA_RACE (31 of 60 remaining) [2022-04-18 18:49:36,799 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr10ASSERT_VIOLATIONDATA_RACE (30 of 60 remaining) [2022-04-18 18:49:36,799 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr11ASSERT_VIOLATIONDATA_RACE (29 of 60 remaining) [2022-04-18 18:49:36,801 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr12ASSERT_VIOLATIONDATA_RACE (28 of 60 remaining) [2022-04-18 18:49:36,801 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr13ASSERT_VIOLATIONDATA_RACE (27 of 60 remaining) [2022-04-18 18:49:36,801 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr14ASSERT_VIOLATIONDATA_RACE (26 of 60 remaining) [2022-04-18 18:49:36,801 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr15ASSERT_VIOLATIONDATA_RACE (25 of 60 remaining) [2022-04-18 18:49:36,802 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (24 of 60 remaining) [2022-04-18 18:49:36,802 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr16ASSERT_VIOLATIONDATA_RACE (23 of 60 remaining) [2022-04-18 18:49:36,802 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (22 of 60 remaining) [2022-04-18 18:49:36,802 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr17ASSERT_VIOLATIONDATA_RACE (21 of 60 remaining) [2022-04-18 18:49:36,802 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (20 of 60 remaining) [2022-04-18 18:49:36,802 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (19 of 60 remaining) [2022-04-18 18:49:36,802 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr24ASSERT_VIOLATIONDATA_RACE (18 of 60 remaining) [2022-04-18 18:49:36,803 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr25ASSERT_VIOLATIONDATA_RACE (17 of 60 remaining) [2022-04-18 18:49:36,803 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr26ASSERT_VIOLATIONDATA_RACE (16 of 60 remaining) [2022-04-18 18:49:36,803 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr18ASSERT_VIOLATIONDATA_RACE (15 of 60 remaining) [2022-04-18 18:49:36,804 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr19ASSERT_VIOLATIONDATA_RACE (14 of 60 remaining) [2022-04-18 18:49:36,804 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr20ASSERT_VIOLATIONDATA_RACE (13 of 60 remaining) [2022-04-18 18:49:36,804 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr21ASSERT_VIOLATIONDATA_RACE (12 of 60 remaining) [2022-04-18 18:49:36,804 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr22ASSERT_VIOLATIONDATA_RACE (11 of 60 remaining) [2022-04-18 18:49:36,804 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr23ASSERT_VIOLATIONDATA_RACE (10 of 60 remaining) [2022-04-18 18:49:36,804 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4ASSERT_VIOLATIONDATA_RACE (9 of 60 remaining) [2022-04-18 18:49:36,804 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr5ASSERT_VIOLATIONDATA_RACE (8 of 60 remaining) [2022-04-18 18:49:36,805 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr6ASSERT_VIOLATIONDATA_RACE (7 of 60 remaining) [2022-04-18 18:49:36,805 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr7ASSERT_VIOLATIONDATA_RACE (6 of 60 remaining) [2022-04-18 18:49:36,805 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr8ASSERT_VIOLATIONDATA_RACE (5 of 60 remaining) [2022-04-18 18:49:36,805 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr9ASSERT_VIOLATIONDATA_RACE (4 of 60 remaining) [2022-04-18 18:49:36,805 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr10ASSERT_VIOLATIONDATA_RACE (3 of 60 remaining) [2022-04-18 18:49:36,805 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr11ASSERT_VIOLATIONDATA_RACE (2 of 60 remaining) [2022-04-18 18:49:36,806 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr12ASSERT_VIOLATIONDATA_RACE (1 of 60 remaining) [2022-04-18 18:49:36,806 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr13ASSERT_VIOLATIONDATA_RACE (0 of 60 remaining) [2022-04-18 18:49:36,806 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 18:49:36,808 INFO L719 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-04-18 18:49:36,809 WARN L232 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 18:49:36,810 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-04-18 18:49:36,910 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-04-18 18:49:36,911 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 18:49:36,912 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 18:49:36,912 INFO L341 AbstractCegarLoop]: Starting to check reachability of 87 error locations. [2022-04-18 18:49:36,916 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 18:49:36,916 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 572 places, 597 transitions, 1212 flow [2022-04-18 18:49:36,916 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 572 places, 597 transitions, 1212 flow [2022-04-18 18:49:36,917 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 572 places, 597 transitions, 1212 flow [2022-04-18 18:49:37,091 INFO L129 PetriNetUnfolder]: 36/668 cut-off events. [2022-04-18 18:49:37,092 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-04-18 18:49:37,105 INFO L84 FinitePrefix]: Finished finitePrefix Result has 682 conditions, 668 events. 36/668 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 2360 event pairs, 0 based on Foata normal form. 0/566 useless extension candidates. Maximal degree in co-relation 534. Up to 8 conditions per place. [2022-04-18 18:49:37,158 INFO L116 LiptonReduction]: Number of co-enabled transitions 150792 [2022-04-18 18:54:06,035 WARN L230 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2022-04-18 18:54:06,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2022-04-18 18:54:06,048 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.checkImplication(TransFormulaUtils.java:1154) at de.uni_freiburg.informatik.ultimate.lib.tracecheckutils.independencerelation.SemanticIndependenceRelation.performInclusionCheck(SemanticIndependenceRelation.java:197) at de.uni_freiburg.informatik.ultimate.lib.tracecheckutils.independencerelation.SemanticIndependenceRelation.containsLBool(SemanticIndependenceRelation.java:145) at de.uni_freiburg.informatik.ultimate.lib.tracecheckutils.independencerelation.SemanticIndependenceRelation.contains(SemanticIndependenceRelation.java:123) at de.uni_freiburg.informatik.ultimate.lib.tracecheckutils.independencerelation.SemanticIndependenceRelation.contains(SemanticIndependenceRelation.java:1) at de.uni_freiburg.informatik.ultimate.automata.partialorder.UnionIndependenceRelation.lambda$2(UnionIndependenceRelation.java:70) at java.base/java.util.stream.MatchOps$1MatchSink.accept(MatchOps.java:90) at java.base/java.util.Spliterators$ArraySpliterator.tryAdvance(Spliterators.java:958) at java.base/java.util.stream.ReferencePipeline.forEachWithCancel(ReferencePipeline.java:127) at java.base/java.util.stream.AbstractPipeline.copyIntoWithCancel(AbstractPipeline.java:502) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:488) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.MatchOps$MatchOp.evaluateSequential(MatchOps.java:230) at java.base/java.util.stream.MatchOps$MatchOp.evaluateSequential(MatchOps.java:196) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.anyMatch(ReferencePipeline.java:528) at de.uni_freiburg.informatik.ultimate.automata.partialorder.UnionIndependenceRelation.contains(UnionIndependenceRelation.java:70) at de.uni_freiburg.informatik.ultimate.automata.partialorder.CachedIndependenceRelation.contains(CachedIndependenceRelation.java:120) at de.uni_freiburg.informatik.ultimate.automata.partialorder.LiptonReduction.lambda$0(LiptonReduction.java:452) at java.base/java.util.stream.MatchOps$1MatchSink.accept(MatchOps.java:90) at java.base/java.util.HashMap$KeySpliterator.tryAdvance(HashMap.java:1624) at java.base/java.util.stream.ReferencePipeline.forEachWithCancel(ReferencePipeline.java:127) at java.base/java.util.stream.AbstractPipeline.copyIntoWithCancel(AbstractPipeline.java:502) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:488) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.MatchOps$MatchOp.evaluateSequential(MatchOps.java:230) at java.base/java.util.stream.MatchOps$MatchOp.evaluateSequential(MatchOps.java:196) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.allMatch(ReferencePipeline.java:533) at de.uni_freiburg.informatik.ultimate.automata.partialorder.LiptonReduction.isLeftMover(LiptonReduction.java:452) at de.uni_freiburg.informatik.ultimate.automata.partialorder.LiptonReduction.sequenceRuleCheck(LiptonReduction.java:408) at de.uni_freiburg.informatik.ultimate.automata.partialorder.LiptonReduction.sequenceRule(LiptonReduction.java:310) at de.uni_freiburg.informatik.ultimate.automata.partialorder.LiptonReduction.(LiptonReduction.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckutils.petrinetlbe.PetriNetLargeBlockEncoding.(PetriNetLargeBlockEncoding.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.getInitialAbstraction(BasicCegarLoop.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.computeInitialAbstraction(AbstractCegarLoop.java:367) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:331) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:411) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:301) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:172) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:153) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 60 more [2022-04-18 18:54:06,051 INFO L158 Benchmark]: Toolchain (without parser) took 360329.35ms. Allocated memory was 96.5MB in the beginning and 188.7MB in the end (delta: 92.3MB). Free memory was 55.9MB in the beginning and 78.4MB in the end (delta: -22.5MB). Peak memory consumption was 140.1MB. Max. memory is 16.1GB. [2022-04-18 18:54:06,051 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 96.5MB. Free memory is still 75.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-04-18 18:54:06,059 INFO L158 Benchmark]: CACSL2BoogieTranslator took 833.42ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 55.7MB in the beginning and 72.2MB in the end (delta: -16.6MB). Peak memory consumption was 21.5MB. Max. memory is 16.1GB. [2022-04-18 18:54:06,061 INFO L158 Benchmark]: Boogie Procedure Inliner took 118.45ms. Allocated memory is still 117.4MB. Free memory was 72.2MB in the beginning and 66.1MB in the end (delta: 6.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-04-18 18:54:06,062 INFO L158 Benchmark]: Boogie Preprocessor took 97.41ms. Allocated memory is still 117.4MB. Free memory was 66.1MB in the beginning and 60.2MB in the end (delta: 5.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-04-18 18:54:06,062 INFO L158 Benchmark]: RCFGBuilder took 1156.76ms. Allocated memory is still 117.4MB. Free memory was 60.2MB in the beginning and 44.8MB in the end (delta: 15.4MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. [2022-04-18 18:54:06,064 INFO L158 Benchmark]: TraceAbstraction took 358106.55ms. Allocated memory was 117.4MB in the beginning and 188.7MB in the end (delta: 71.3MB). Free memory was 79.5MB in the beginning and 78.4MB in the end (delta: 1.1MB). Peak memory consumption was 142.4MB. Max. memory is 16.1GB. [2022-04-18 18:54:06,073 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 96.5MB. Free memory is still 75.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 833.42ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 55.7MB in the beginning and 72.2MB in the end (delta: -16.6MB). Peak memory consumption was 21.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 118.45ms. Allocated memory is still 117.4MB. Free memory was 72.2MB in the beginning and 66.1MB in the end (delta: 6.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 97.41ms. Allocated memory is still 117.4MB. Free memory was 66.1MB in the beginning and 60.2MB in the end (delta: 5.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1156.76ms. Allocated memory is still 117.4MB. Free memory was 60.2MB in the beginning and 44.8MB in the end (delta: 15.4MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. * TraceAbstraction took 358106.55ms. Allocated memory was 117.4MB in the beginning and 188.7MB in the end (delta: 71.3MB). Free memory was 79.5MB in the beginning and 78.4MB in the end (delta: 1.1MB). Peak memory consumption was 142.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 85.8s, 337 PlacesBefore, 94 PlacesAfterwards, 351 TransitionsBefore, 103 TransitionsAfterwards, 13176 CoEnabledTransitionPairs, 17 FixpointIterations, 83 TrivialSequentialCompositions, 412 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 29 ConcurrentYvCompositions, 5 ChoiceCompositions, 531 TotalNumberOfCompositions, 59079 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 28135, positive: 26278, positive conditional: 0, positive unconditional: 26278, negative: 1857, negative conditional: 0, negative unconditional: 1857, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 9327, positive: 9146, positive conditional: 0, positive unconditional: 9146, negative: 181, negative conditional: 0, negative unconditional: 181, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 9327, positive: 8072, positive conditional: 0, positive unconditional: 8072, negative: 1255, negative conditional: 0, negative unconditional: 1255, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1255, positive: 1074, positive conditional: 0, positive unconditional: 1074, negative: 158, negative conditional: 0, negative unconditional: 158, unknown: 23, unknown conditional: 0, unknown unconditional: 23] , SemanticIndependenceRelation.Query Time [ms]: [ total: 36614, positive: 955, positive conditional: 0, positive unconditional: 955, negative: 2291, negative conditional: 0, negative unconditional: 2291, unknown: 33368, unknown conditional: 0, unknown unconditional: 33368] ], Cache Queries: [ total: 28135, positive: 17132, positive conditional: 0, positive unconditional: 17132, negative: 1676, negative conditional: 0, negative unconditional: 1676, unknown: 9327, unknown conditional: 0, unknown unconditional: 9327] , Statistics on independence cache: Total cache size (in pairs): 792, Positive cache size: 696, Positive conditional cache size: 0, Positive unconditional cache size: 696, Negative cache size: 96, Negative conditional cache size: 0, Negative unconditional cache size: 96 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/TaipanReach.xml -i /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/safestack_relacy.i -s /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UTaipan-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1d61eb304445c3cb39dfadfa4748d680ea5f0f4958f8bc176e8bc3c77c47e674 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 18:54:07,887 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 18:54:07,889 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 18:54:07,930 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 18:54:07,930 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 18:54:07,932 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 18:54:07,934 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 18:54:07,938 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 18:54:07,942 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 18:54:07,946 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 18:54:07,947 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 18:54:07,949 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 18:54:07,950 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 18:54:07,952 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 18:54:07,953 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 18:54:07,958 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 18:54:07,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 18:54:07,961 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 18:54:07,962 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 18:54:07,968 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 18:54:07,969 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 18:54:07,970 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 18:54:07,972 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 18:54:07,973 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 18:54:07,974 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 18:54:07,980 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 18:54:07,981 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 18:54:07,981 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 18:54:07,982 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 18:54:07,983 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 18:54:07,984 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 18:54:07,984 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 18:54:07,986 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 18:54:07,987 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 18:54:07,988 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 18:54:07,989 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 18:54:07,989 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 18:54:07,989 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 18:54:07,990 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 18:54:07,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 18:54:07,991 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 18:54:07,992 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 18:54:07,996 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Bitvector.epf [2022-04-18 18:54:08,041 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 18:54:08,042 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 18:54:08,042 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 18:54:08,042 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 18:54:08,043 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 18:54:08,043 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 18:54:08,043 INFO L138 SettingsManager]: * User list type=DISABLED [2022-04-18 18:54:08,044 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-04-18 18:54:08,044 INFO L138 SettingsManager]: * Explicit value domain=true [2022-04-18 18:54:08,045 INFO L138 SettingsManager]: * Octagon Domain=false [2022-04-18 18:54:08,045 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-04-18 18:54:08,045 INFO L138 SettingsManager]: * Interval Domain=false [2022-04-18 18:54:08,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 18:54:08,046 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 18:54:08,047 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 18:54:08,047 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 18:54:08,047 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 18:54:08,047 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 18:54:08,047 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 18:54:08,047 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 18:54:08,047 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 18:54:08,048 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-04-18 18:54:08,048 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-04-18 18:54:08,048 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 18:54:08,048 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 18:54:08,048 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 18:54:08,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 18:54:08,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 18:54:08,049 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-18 18:54:08,049 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 18:54:08,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 18:54:08,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 18:54:08,050 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 18:54:08,050 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 18:54:08,050 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-04-18 18:54:08,050 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-04-18 18:54:08,050 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 18:54:08,050 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-18 18:54:08,051 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-18 18:54:08,051 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d61eb304445c3cb39dfadfa4748d680ea5f0f4958f8bc176e8bc3c77c47e674 [2022-04-18 18:54:08,409 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 18:54:08,434 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 18:54:08,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 18:54:08,438 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 18:54:08,439 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 18:54:08,441 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/safestack_relacy.i [2022-04-18 18:54:08,501 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9ce8cea03/f9c3384b773a418cb400ad74dfda47cd/FLAG277618f85 [2022-04-18 18:54:09,056 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 18:54:09,056 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/safestack_relacy.i [2022-04-18 18:54:09,081 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9ce8cea03/f9c3384b773a418cb400ad74dfda47cd/FLAG277618f85 [2022-04-18 18:54:09,541 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9ce8cea03/f9c3384b773a418cb400ad74dfda47cd [2022-04-18 18:54:09,544 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 18:54:09,545 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 18:54:09,547 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 18:54:09,548 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 18:54:09,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 18:54:09,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:54:09" (1/1) ... [2022-04-18 18:54:09,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e8e8aa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:54:09, skipping insertion in model container [2022-04-18 18:54:09,552 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:54:09" (1/1) ... [2022-04-18 18:54:09,557 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 18:54:09,620 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 18:54:10,420 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-complex/safestack_relacy.i[78860,78873] [2022-04-18 18:54:10,430 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 18:54:10,449 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 18:54:10,522 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-complex/safestack_relacy.i[78860,78873] [2022-04-18 18:54:10,553 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 18:54:10,647 INFO L208 MainTranslator]: Completed translation [2022-04-18 18:54:10,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:54:10 WrapperNode [2022-04-18 18:54:10,648 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 18:54:10,649 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 18:54:10,649 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 18:54:10,649 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 18:54:10,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:54:10" (1/1) ... [2022-04-18 18:54:10,686 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:54:10" (1/1) ... [2022-04-18 18:54:10,730 INFO L137 Inliner]: procedures = 485, calls = 74, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 464 [2022-04-18 18:54:10,731 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 18:54:10,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 18:54:10,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 18:54:10,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 18:54:10,739 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:54:10" (1/1) ... [2022-04-18 18:54:10,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:54:10" (1/1) ... [2022-04-18 18:54:10,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:54:10" (1/1) ... [2022-04-18 18:54:10,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:54:10" (1/1) ... [2022-04-18 18:54:10,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:54:10" (1/1) ... [2022-04-18 18:54:10,813 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:54:10" (1/1) ... [2022-04-18 18:54:10,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:54:10" (1/1) ... [2022-04-18 18:54:10,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 18:54:10,844 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 18:54:10,844 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 18:54:10,844 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 18:54:10,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:54:10" (1/1) ... [2022-04-18 18:54:10,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 18:54:10,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 18:54:10,889 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 18:54:10,915 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 18:54:10,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-04-18 18:54:10,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 18:54:10,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-04-18 18:54:10,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-04-18 18:54:10,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-04-18 18:54:10,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 18:54:10,934 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2022-04-18 18:54:10,934 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2022-04-18 18:54:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 18:54:10,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 18:54:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-04-18 18:54:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 18:54:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-04-18 18:54:10,937 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-04-18 18:54:11,250 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 18:54:11,252 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 18:54:12,194 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 18:54:12,492 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 18:54:12,492 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2022-04-18 18:54:12,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:54:12 BoogieIcfgContainer [2022-04-18 18:54:12,497 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 18:54:12,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 18:54:12,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 18:54:12,502 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 18:54:12,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 06:54:09" (1/3) ... [2022-04-18 18:54:12,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14e061d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:54:12, skipping insertion in model container [2022-04-18 18:54:12,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:54:10" (2/3) ... [2022-04-18 18:54:12,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14e061d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:54:12, skipping insertion in model container [2022-04-18 18:54:12,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:54:12" (3/3) ... [2022-04-18 18:54:12,506 INFO L111 eAbstractionObserver]: Analyzing ICFG safestack_relacy.i [2022-04-18 18:54:12,512 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 18:54:12,513 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 18:54:12,513 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-04-18 18:54:12,513 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 18:54:12,674 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-04-18 18:54:12,719 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 18:54:12,725 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 18:54:12,726 INFO L341 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2022-04-18 18:54:12,752 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 18:54:12,767 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 330 places, 344 transitions, 696 flow [2022-04-18 18:54:12,769 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 330 places, 344 transitions, 696 flow [2022-04-18 18:54:12,771 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 330 places, 344 transitions, 696 flow [2022-04-18 18:54:12,922 INFO L129 PetriNetUnfolder]: 19/365 cut-off events. [2022-04-18 18:54:12,923 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 18:54:12,933 INFO L84 FinitePrefix]: Finished finitePrefix Result has 371 conditions, 365 events. 19/365 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 688 event pairs, 0 based on Foata normal form. 0/310 useless extension candidates. Maximal degree in co-relation 262. Up to 4 conditions per place. [2022-04-18 18:54:12,944 INFO L116 LiptonReduction]: Number of co-enabled transitions 12744 [2022-04-18 18:55:24,207 INFO L131 LiptonReduction]: Checked pairs total: 63022 [2022-04-18 18:55:24,208 INFO L133 LiptonReduction]: Total number of compositions: 552 [2022-04-18 18:55:24,217 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 93 places, 102 transitions, 212 flow [2022-04-18 18:55:24,289 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 940 states, 823 states have (on average 2.321992709599028) internal successors, (1911), 939 states have internal predecessors, (1911), 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 18:55:24,307 INFO L276 IsEmpty]: Start isEmpty. Operand has 940 states, 823 states have (on average 2.321992709599028) internal successors, (1911), 939 states have internal predecessors, (1911), 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 18:55:24,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-04-18 18:55:24,312 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:55:24,313 INFO L499 BasicCegarLoop]: trace histogram [1] [2022-04-18 18:55:24,313 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2022-04-18 18:55:24,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:55:24,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1877, now seen corresponding path program 1 times [2022-04-18 18:55:24,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-04-18 18:55:24,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [974024040] [2022-04-18 18:55:24,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:55:24,330 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-04-18 18:55:24,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat [2022-04-18 18:55:24,335 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-04-18 18:55:24,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-04-18 18:55:24,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:55:24,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2022-04-18 18:55:24,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 18:55:24,484 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 18:55:24,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 18:55:24,485 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-04-18 18:55:24,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [974024040] [2022-04-18 18:55:24,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [974024040] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 18:55:24,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 18:55:24,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-04-18 18:55:24,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548424148] [2022-04-18 18:55:24,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 18:55:24,492 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 18:55:24,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-04-18 18:55:24,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 18:55:24,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 18:55:24,520 INFO L87 Difference]: Start difference. First operand has 940 states, 823 states have (on average 2.321992709599028) internal successors, (1911), 939 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:55:24,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:55:24,982 INFO L93 Difference]: Finished difference Result 663 states and 1330 transitions. [2022-04-18 18:55:24,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 18:55:24,990 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2022-04-18 18:55:24,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:55:25,008 INFO L225 Difference]: With dead ends: 663 [2022-04-18 18:55:25,010 INFO L226 Difference]: Without dead ends: 661 [2022-04-18 18:55:25,011 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 18:55:25,014 INFO L913 BasicCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-18 18:55:25,016 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-18 18:55:25,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2022-04-18 18:55:25,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 661. [2022-04-18 18:55:25,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 634 states have (on average 2.093059936908517) internal successors, (1327), 660 states have internal predecessors, (1327), 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 18:55:25,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 1327 transitions. [2022-04-18 18:55:25,118 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 1327 transitions. Word has length 1 [2022-04-18 18:55:25,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:55:25,119 INFO L478 AbstractCegarLoop]: Abstraction has 661 states and 1327 transitions. [2022-04-18 18:55:25,119 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:55:25,119 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 1327 transitions. [2022-04-18 18:55:25,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-04-18 18:55:25,120 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:55:25,120 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2022-04-18 18:55:25,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-04-18 18:55:25,321 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 [2022-04-18 18:55:25,321 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2022-04-18 18:55:25,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:55:25,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1221795961, now seen corresponding path program 1 times [2022-04-18 18:55:25,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-04-18 18:55:25,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [476329070] [2022-04-18 18:55:25,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:55:25,324 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-04-18 18:55:25,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat [2022-04-18 18:55:25,325 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-04-18 18:55:25,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-04-18 18:55:25,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:55:25,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-18 18:55:25,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 18:55:25,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-18 18:55:25,518 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 18:55:25,518 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-04-18 18:55:25,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [476329070] [2022-04-18 18:55:25,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [476329070] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 18:55:25,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 18:55:25,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 18:55:25,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821985076] [2022-04-18 18:55:25,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 18:55:25,520 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 18:55:25,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-04-18 18:55:25,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 18:55:25,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 18:55:25,522 INFO L87 Difference]: Start difference. First operand 661 states and 1327 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:55:26,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:55:26,003 INFO L93 Difference]: Finished difference Result 662 states and 1328 transitions. [2022-04-18 18:55:26,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 18:55:26,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-04-18 18:55:26,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:55:26,008 INFO L225 Difference]: With dead ends: 662 [2022-04-18 18:55:26,008 INFO L226 Difference]: Without dead ends: 662 [2022-04-18 18:55:26,008 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 18:55:26,009 INFO L913 BasicCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-18 18:55:26,010 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-18 18:55:26,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2022-04-18 18:55:26,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 662. [2022-04-18 18:55:26,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 635 states have (on average 2.0913385826771655) internal successors, (1328), 661 states have internal predecessors, (1328), 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 18:55:26,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1328 transitions. [2022-04-18 18:55:26,061 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1328 transitions. Word has length 7 [2022-04-18 18:55:26,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:55:26,061 INFO L478 AbstractCegarLoop]: Abstraction has 662 states and 1328 transitions. [2022-04-18 18:55:26,061 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:55:26,062 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1328 transitions. [2022-04-18 18:55:26,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-04-18 18:55:26,062 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:55:26,062 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-04-18 18:55:26,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-04-18 18:55:26,276 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 [2022-04-18 18:55:26,277 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2022-04-18 18:55:26,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:55:26,278 INFO L85 PathProgramCache]: Analyzing trace with hash -225679785, now seen corresponding path program 1 times [2022-04-18 18:55:26,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-04-18 18:55:26,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [841810629] [2022-04-18 18:55:26,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:55:26,279 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-04-18 18:55:26,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat [2022-04-18 18:55:26,280 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-04-18 18:55:26,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-04-18 18:55:26,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:55:26,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-18 18:55:26,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 18:55:26,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-18 18:55:26,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 18:55:26,592 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-18 18:55:26,592 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-04-18 18:55:26,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [841810629] [2022-04-18 18:55:26,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [841810629] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 18:55:26,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2017445078] [2022-04-18 18:55:26,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:55:26,593 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-04-18 18:55:26,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/cvc4 [2022-04-18 18:55:26,595 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-04-18 18:55:26,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2022-04-18 18:55:27,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:55:27,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-18 18:55:27,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 18:55:27,118 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-18 18:55:27,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 18:55:27,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-18 18:55:27,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2017445078] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 18:55:27,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131151701] [2022-04-18 18:55:27,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:55:27,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 18:55:27,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 18:55:27,150 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 18:55:27,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-18 18:55:27,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:55:27,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2022-04-18 18:55:27,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 18:55:27,340 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-18 18:55:27,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 18:55:27,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-18 18:55:27,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131151701] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 18:55:27,409 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-04-18 18:55:27,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3, 3, 3, 3] total 6 [2022-04-18 18:55:27,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107341853] [2022-04-18 18:55:27,409 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-04-18 18:55:27,409 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-18 18:55:27,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-04-18 18:55:27,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-18 18:55:27,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-04-18 18:55:27,410 INFO L87 Difference]: Start difference. First operand 662 states and 1328 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:55:28,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:55:28,277 INFO L93 Difference]: Finished difference Result 665 states and 1332 transitions. [2022-04-18 18:55:28,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 18:55:28,278 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-04-18 18:55:28,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:55:28,282 INFO L225 Difference]: With dead ends: 665 [2022-04-18 18:55:28,282 INFO L226 Difference]: Without dead ends: 665 [2022-04-18 18:55:28,282 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-04-18 18:55:28,283 INFO L913 BasicCegarLoop]: 33 mSDtfsCounter, 71 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-18 18:55:28,284 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 132 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-18 18:55:28,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2022-04-18 18:55:28,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 665. [2022-04-18 18:55:28,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 638 states have (on average 2.0877742946708464) internal successors, (1332), 664 states have internal predecessors, (1332), 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 18:55:28,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 1332 transitions. [2022-04-18 18:55:28,302 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 1332 transitions. Word has length 8 [2022-04-18 18:55:28,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:55:28,302 INFO L478 AbstractCegarLoop]: Abstraction has 665 states and 1332 transitions. [2022-04-18 18:55:28,302 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:55:28,303 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 1332 transitions. [2022-04-18 18:55:28,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-04-18 18:55:28,303 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:55:28,303 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-04-18 18:55:28,322 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-04-18 18:55:28,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2022-04-18 18:55:28,736 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-04-18 18:55:28,917 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3,5 /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/cvc4 --incremental --print-success --lang smt,6 /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 18:55:28,917 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2022-04-18 18:55:28,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:55:28,918 INFO L85 PathProgramCache]: Analyzing trace with hash 589150599, now seen corresponding path program 2 times [2022-04-18 18:55:28,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-04-18 18:55:28,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1758561529] [2022-04-18 18:55:28,919 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-18 18:55:28,919 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-04-18 18:55:28,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat [2022-04-18 18:55:28,920 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-04-18 18:55:28,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-04-18 18:55:29,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-18 18:55:29,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-04-18 18:55:29,132 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 18:55:29,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 18:55:29,248 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-04-18 18:55:29,248 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 18:55:29,249 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (59 of 60 remaining) [2022-04-18 18:55:29,251 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (58 of 60 remaining) [2022-04-18 18:55:29,251 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (57 of 60 remaining) [2022-04-18 18:55:29,251 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (56 of 60 remaining) [2022-04-18 18:55:29,251 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (55 of 60 remaining) [2022-04-18 18:55:29,251 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (54 of 60 remaining) [2022-04-18 18:55:29,252 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr14ASSERT_VIOLATIONDATA_RACE (53 of 60 remaining) [2022-04-18 18:55:29,252 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr15ASSERT_VIOLATIONDATA_RACE (52 of 60 remaining) [2022-04-18 18:55:29,252 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (51 of 60 remaining) [2022-04-18 18:55:29,252 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (50 of 60 remaining) [2022-04-18 18:55:29,252 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr16ASSERT_VIOLATIONDATA_RACE (49 of 60 remaining) [2022-04-18 18:55:29,252 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr17ASSERT_VIOLATIONDATA_RACE (48 of 60 remaining) [2022-04-18 18:55:29,253 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (47 of 60 remaining) [2022-04-18 18:55:29,253 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (46 of 60 remaining) [2022-04-18 18:55:29,253 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr24ASSERT_VIOLATIONDATA_RACE (45 of 60 remaining) [2022-04-18 18:55:29,253 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr25ASSERT_VIOLATIONDATA_RACE (44 of 60 remaining) [2022-04-18 18:55:29,253 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr26ASSERT_VIOLATIONDATA_RACE (43 of 60 remaining) [2022-04-18 18:55:29,253 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr18ASSERT_VIOLATIONDATA_RACE (42 of 60 remaining) [2022-04-18 18:55:29,254 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr19ASSERT_VIOLATIONDATA_RACE (41 of 60 remaining) [2022-04-18 18:55:29,254 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr20ASSERT_VIOLATIONDATA_RACE (40 of 60 remaining) [2022-04-18 18:55:29,254 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr21ASSERT_VIOLATIONDATA_RACE (39 of 60 remaining) [2022-04-18 18:55:29,254 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr22ASSERT_VIOLATIONDATA_RACE (38 of 60 remaining) [2022-04-18 18:55:29,254 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr23ASSERT_VIOLATIONDATA_RACE (37 of 60 remaining) [2022-04-18 18:55:29,255 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4ASSERT_VIOLATIONDATA_RACE (36 of 60 remaining) [2022-04-18 18:55:29,255 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr5ASSERT_VIOLATIONDATA_RACE (35 of 60 remaining) [2022-04-18 18:55:29,255 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr6ASSERT_VIOLATIONDATA_RACE (34 of 60 remaining) [2022-04-18 18:55:29,255 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr7ASSERT_VIOLATIONDATA_RACE (33 of 60 remaining) [2022-04-18 18:55:29,255 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr8ASSERT_VIOLATIONDATA_RACE (32 of 60 remaining) [2022-04-18 18:55:29,255 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr9ASSERT_VIOLATIONDATA_RACE (31 of 60 remaining) [2022-04-18 18:55:29,256 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr10ASSERT_VIOLATIONDATA_RACE (30 of 60 remaining) [2022-04-18 18:55:29,256 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr11ASSERT_VIOLATIONDATA_RACE (29 of 60 remaining) [2022-04-18 18:55:29,256 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr12ASSERT_VIOLATIONDATA_RACE (28 of 60 remaining) [2022-04-18 18:55:29,256 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr13ASSERT_VIOLATIONDATA_RACE (27 of 60 remaining) [2022-04-18 18:55:29,256 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr14ASSERT_VIOLATIONDATA_RACE (26 of 60 remaining) [2022-04-18 18:55:29,256 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr15ASSERT_VIOLATIONDATA_RACE (25 of 60 remaining) [2022-04-18 18:55:29,257 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (24 of 60 remaining) [2022-04-18 18:55:29,257 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (23 of 60 remaining) [2022-04-18 18:55:29,257 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr16ASSERT_VIOLATIONDATA_RACE (22 of 60 remaining) [2022-04-18 18:55:29,257 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr17ASSERT_VIOLATIONDATA_RACE (21 of 60 remaining) [2022-04-18 18:55:29,257 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (20 of 60 remaining) [2022-04-18 18:55:29,257 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (19 of 60 remaining) [2022-04-18 18:55:29,257 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr24ASSERT_VIOLATIONDATA_RACE (18 of 60 remaining) [2022-04-18 18:55:29,258 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr25ASSERT_VIOLATIONDATA_RACE (17 of 60 remaining) [2022-04-18 18:55:29,258 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr26ASSERT_VIOLATIONDATA_RACE (16 of 60 remaining) [2022-04-18 18:55:29,258 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr18ASSERT_VIOLATIONDATA_RACE (15 of 60 remaining) [2022-04-18 18:55:29,258 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr19ASSERT_VIOLATIONDATA_RACE (14 of 60 remaining) [2022-04-18 18:55:29,258 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr20ASSERT_VIOLATIONDATA_RACE (13 of 60 remaining) [2022-04-18 18:55:29,258 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr21ASSERT_VIOLATIONDATA_RACE (12 of 60 remaining) [2022-04-18 18:55:29,259 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr22ASSERT_VIOLATIONDATA_RACE (11 of 60 remaining) [2022-04-18 18:55:29,259 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr23ASSERT_VIOLATIONDATA_RACE (10 of 60 remaining) [2022-04-18 18:55:29,259 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4ASSERT_VIOLATIONDATA_RACE (9 of 60 remaining) [2022-04-18 18:55:29,259 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr5ASSERT_VIOLATIONDATA_RACE (8 of 60 remaining) [2022-04-18 18:55:29,259 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr6ASSERT_VIOLATIONDATA_RACE (7 of 60 remaining) [2022-04-18 18:55:29,259 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr7ASSERT_VIOLATIONDATA_RACE (6 of 60 remaining) [2022-04-18 18:55:29,260 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr8ASSERT_VIOLATIONDATA_RACE (5 of 60 remaining) [2022-04-18 18:55:29,260 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr9ASSERT_VIOLATIONDATA_RACE (4 of 60 remaining) [2022-04-18 18:55:29,260 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr10ASSERT_VIOLATIONDATA_RACE (3 of 60 remaining) [2022-04-18 18:55:29,260 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr11ASSERT_VIOLATIONDATA_RACE (2 of 60 remaining) [2022-04-18 18:55:29,260 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr12ASSERT_VIOLATIONDATA_RACE (1 of 60 remaining) [2022-04-18 18:55:29,260 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr13ASSERT_VIOLATIONDATA_RACE (0 of 60 remaining) [2022-04-18 18:55:29,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-04-18 18:55:29,471 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 [2022-04-18 18:55:29,473 INFO L719 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-04-18 18:55:29,474 WARN L232 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 18:55:29,474 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-04-18 18:55:29,573 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-04-18 18:55:29,575 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 18:55:29,575 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 18:55:29,575 INFO L341 AbstractCegarLoop]: Starting to check reachability of 87 error locations. [2022-04-18 18:55:29,579 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 18:55:29,580 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 557 places, 582 transitions, 1182 flow [2022-04-18 18:55:29,580 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 557 places, 582 transitions, 1182 flow [2022-04-18 18:55:29,580 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 557 places, 582 transitions, 1182 flow [2022-04-18 18:55:29,735 INFO L129 PetriNetUnfolder]: 36/653 cut-off events. [2022-04-18 18:55:29,735 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-04-18 18:55:29,749 INFO L84 FinitePrefix]: Finished finitePrefix Result has 667 conditions, 653 events. 36/653 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2325 event pairs, 0 based on Foata normal form. 0/551 useless extension candidates. Maximal degree in co-relation 518. Up to 8 conditions per place. [2022-04-18 18:55:29,817 INFO L116 LiptonReduction]: Number of co-enabled transitions 142072 [2022-04-18 19:00:34,147 INFO L131 LiptonReduction]: Checked pairs total: 766259 [2022-04-18 19:00:34,147 INFO L133 LiptonReduction]: Total number of compositions: 1000 [2022-04-18 19:00:34,149 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 188 places, 206 transitions, 430 flow [2022-04-18 19:00:36,407 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 93978 states, 90725 states have (on average 3.2401322678423807) internal successors, (293961), 93977 states have internal predecessors, (293961), 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 19:00:36,549 INFO L276 IsEmpty]: Start isEmpty. Operand has 93978 states, 90725 states have (on average 3.2401322678423807) internal successors, (293961), 93977 states have internal predecessors, (293961), 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 19:00:36,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-04-18 19:00:36,550 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:00:36,550 INFO L499 BasicCegarLoop]: trace histogram [1] [2022-04-18 19:00:36,550 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 84 more)] === [2022-04-18 19:00:36,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:00:36,552 INFO L85 PathProgramCache]: Analyzing trace with hash 3511, now seen corresponding path program 1 times [2022-04-18 19:00:36,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-04-18 19:00:36,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2115224505] [2022-04-18 19:00:36,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:00:36,552 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-04-18 19:00:36,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat [2022-04-18 19:00:36,554 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-04-18 19:00:36,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-04-18 19:00:36,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:00:36,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2022-04-18 19:00:36,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 19:00:36,668 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 19:00:36,668 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 19:00:36,668 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-04-18 19:00:36,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2115224505] [2022-04-18 19:00:36,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2115224505] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:00:36,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:00:36,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-04-18 19:00:36,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271325317] [2022-04-18 19:00:36,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:00:36,669 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 19:00:36,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-04-18 19:00:36,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 19:00:36,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 19:00:36,805 INFO L87 Difference]: Start difference. First operand has 93978 states, 90725 states have (on average 3.2401322678423807) internal successors, (293961), 93977 states have internal predecessors, (293961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:00:38,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:00:38,395 INFO L93 Difference]: Finished difference Result 51974 states and 159327 transitions. [2022-04-18 19:00:38,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 19:00:38,411 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2022-04-18 19:00:38,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:00:38,732 INFO L225 Difference]: With dead ends: 51974 [2022-04-18 19:00:38,733 INFO L226 Difference]: Without dead ends: 51970 [2022-04-18 19:00:38,733 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 19:00:38,736 INFO L913 BasicCegarLoop]: 73 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-18 19:00:38,737 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 73 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-18 19:00:38,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51970 states. [2022-04-18 19:00:40,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51970 to 51970. [2022-04-18 19:00:40,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51970 states, 51749 states have (on average 3.0786875108697753) internal successors, (159319), 51969 states have internal predecessors, (159319), 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 19:00:40,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51970 states to 51970 states and 159319 transitions. [2022-04-18 19:00:40,902 INFO L78 Accepts]: Start accepts. Automaton has 51970 states and 159319 transitions. Word has length 1 [2022-04-18 19:00:40,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:00:40,903 INFO L478 AbstractCegarLoop]: Abstraction has 51970 states and 159319 transitions. [2022-04-18 19:00:40,903 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:00:40,903 INFO L276 IsEmpty]: Start isEmpty. Operand 51970 states and 159319 transitions. [2022-04-18 19:00:40,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-04-18 19:00:40,904 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:00:40,904 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 19:00:40,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-04-18 19:00:41,114 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 [2022-04-18 19:00:41,114 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 84 more)] === [2022-04-18 19:00:41,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:00:41,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1416980667, now seen corresponding path program 1 times [2022-04-18 19:00:41,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-04-18 19:00:41,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1028968447] [2022-04-18 19:00:41,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:00:41,116 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-04-18 19:00:41,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat [2022-04-18 19:00:41,117 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-04-18 19:00:41,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-04-18 19:00:41,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:00:41,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-18 19:00:41,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 19:00:41,378 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 19:00:41,378 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 19:00:41,378 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-04-18 19:00:41,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1028968447] [2022-04-18 19:00:41,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1028968447] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:00:41,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:00:41,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 19:00:41,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906853817] [2022-04-18 19:00:41,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:00:41,379 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 19:00:41,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-04-18 19:00:41,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 19:00:41,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:00:41,380 INFO L87 Difference]: Start difference. First operand 51970 states and 159319 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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 19:00:42,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:00:42,947 INFO L93 Difference]: Finished difference Result 51971 states and 159320 transitions. [2022-04-18 19:00:42,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 19:00:42,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-04-18 19:00:42,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:00:43,170 INFO L225 Difference]: With dead ends: 51971 [2022-04-18 19:00:43,170 INFO L226 Difference]: Without dead ends: 51971 [2022-04-18 19:00:43,171 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:00:43,171 INFO L913 BasicCegarLoop]: 73 mSDtfsCounter, 0 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-04-18 19:00:43,172 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 146 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-04-18 19:00:43,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51971 states. [2022-04-18 19:00:44,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51971 to 51971. [2022-04-18 19:00:44,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51971 states, 51750 states have (on average 3.0786473429951693) internal successors, (159320), 51970 states have internal predecessors, (159320), 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 19:00:44,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51971 states to 51971 states and 159320 transitions. [2022-04-18 19:00:44,863 INFO L78 Accepts]: Start accepts. Automaton has 51971 states and 159320 transitions. Word has length 9 [2022-04-18 19:00:44,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:00:44,863 INFO L478 AbstractCegarLoop]: Abstraction has 51971 states and 159320 transitions. [2022-04-18 19:00:44,863 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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 19:00:44,864 INFO L276 IsEmpty]: Start isEmpty. Operand 51971 states and 159320 transitions. [2022-04-18 19:00:44,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-04-18 19:00:44,864 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:00:44,864 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 19:00:44,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-04-18 19:00:45,065 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 [2022-04-18 19:00:45,065 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 84 more)] === [2022-04-18 19:00:45,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:00:45,066 INFO L85 PathProgramCache]: Analyzing trace with hash 46530078, now seen corresponding path program 1 times [2022-04-18 19:00:45,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-04-18 19:00:45,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [340247164] [2022-04-18 19:00:45,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:00:45,067 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-04-18 19:00:45,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat [2022-04-18 19:00:45,068 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-04-18 19:00:45,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-04-18 19:00:45,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:00:45,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-18 19:00:45,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 19:00:45,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 19:00:45,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 19:00:45,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 19:00:45,501 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-04-18 19:00:45,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [340247164] [2022-04-18 19:00:45,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [340247164] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 19:00:45,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [476558337] [2022-04-18 19:00:45,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:00:45,501 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-04-18 19:00:45,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/cvc4 [2022-04-18 19:00:45,503 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-04-18 19:00:45,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2022-04-18 19:00:45,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:00:45,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-18 19:00:45,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 19:00:45,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 19:00:45,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 19:00:45,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 19:00:45,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [476558337] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 19:00:45,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129189385] [2022-04-18 19:00:45,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:00:45,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 19:00:45,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 19:00:45,973 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 19:00:45,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-04-18 19:00:46,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:00:46,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2022-04-18 19:00:46,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 19:00:46,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-18 19:00:46,218 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 19:00:46,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129189385] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:00:46,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2022-04-18 19:00:46,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3, 3, 3] total 7 [2022-04-18 19:00:46,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896500246] [2022-04-18 19:00:46,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:00:46,219 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 19:00:46,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-04-18 19:00:46,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 19:00:46,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-04-18 19:00:46,219 INFO L87 Difference]: Start difference. First operand 51971 states and 159320 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 19:00:48,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:00:48,352 INFO L93 Difference]: Finished difference Result 48854 states and 148865 transitions. [2022-04-18 19:00:48,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 19:00:48,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 19:00:48,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:00:48,856 INFO L225 Difference]: With dead ends: 48854 [2022-04-18 19:00:48,871 INFO L226 Difference]: Without dead ends: 48854 [2022-04-18 19:00:48,871 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-04-18 19:00:48,873 INFO L913 BasicCegarLoop]: 99 mSDtfsCounter, 143 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-04-18 19:00:48,873 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 166 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-04-18 19:00:48,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48854 states. [2022-04-18 19:00:50,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48854 to 48431. [2022-04-18 19:00:50,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48431 states, 48258 states have (on average 3.0678022296821252) internal successors, (148046), 48430 states have internal predecessors, (148046), 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 19:00:50,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48431 states to 48431 states and 148046 transitions. [2022-04-18 19:00:50,200 INFO L78 Accepts]: Start accepts. Automaton has 48431 states and 148046 transitions. Word has length 10 [2022-04-18 19:00:50,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:00:50,200 INFO L478 AbstractCegarLoop]: Abstraction has 48431 states and 148046 transitions. [2022-04-18 19:00:50,200 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 19:00:50,200 INFO L276 IsEmpty]: Start isEmpty. Operand 48431 states and 148046 transitions. [2022-04-18 19:00:50,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-04-18 19:00:50,201 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:00:50,201 INFO L499 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-04-18 19:00:50,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-04-18 19:00:50,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-04-18 19:00:50,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2022-04-18 19:00:50,803 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3,11 /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/cvc4 --incremental --print-success --lang smt [2022-04-18 19:00:50,804 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 84 more)] === [2022-04-18 19:00:50,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:00:50,804 INFO L85 PathProgramCache]: Analyzing trace with hash -930257924, now seen corresponding path program 1 times [2022-04-18 19:00:50,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-04-18 19:00:50,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1261950390] [2022-04-18 19:00:50,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:00:50,805 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-04-18 19:00:50,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat [2022-04-18 19:00:50,806 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-04-18 19:00:50,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-04-18 19:00:50,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:00:50,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-18 19:00:50,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 19:00:51,166 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-04-18 19:00:51,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 19:00:51,330 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-04-18 19:00:51,330 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-04-18 19:00:51,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1261950390] [2022-04-18 19:00:51,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1261950390] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 19:00:51,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [900918128] [2022-04-18 19:00:51,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:00:51,330 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-04-18 19:00:51,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/cvc4 [2022-04-18 19:00:51,331 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-04-18 19:00:51,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-04-18 19:00:51,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:00:51,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-18 19:00:51,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 19:00:51,768 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-04-18 19:00:51,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 19:00:51,840 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-04-18 19:00:51,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [900918128] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 19:00:51,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638818540] [2022-04-18 19:00:51,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:00:51,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 19:00:51,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 19:00:51,841 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 19:00:51,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-04-18 19:00:52,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:00:52,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjunts are in the unsatisfiable core [2022-04-18 19:00:52,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 19:00:52,122 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-04-18 19:00:52,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 19:00:52,281 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-04-18 19:00:52,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638818540] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 19:00:52,281 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-04-18 19:00:52,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3, 3, 3, 3] total 6 [2022-04-18 19:00:52,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685554141] [2022-04-18 19:00:52,281 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-04-18 19:00:52,282 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-18 19:00:52,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-04-18 19:00:52,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-18 19:00:52,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-04-18 19:00:52,282 INFO L87 Difference]: Start difference. First operand 48431 states and 148046 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 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 19:00:55,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:00:55,029 INFO L93 Difference]: Finished difference Result 48434 states and 148050 transitions. [2022-04-18 19:00:55,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 19:00:55,031 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 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 13 [2022-04-18 19:00:55,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:00:55,175 INFO L225 Difference]: With dead ends: 48434 [2022-04-18 19:00:55,176 INFO L226 Difference]: Without dead ends: 48434 [2022-04-18 19:00:55,176 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 65 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-04-18 19:00:55,176 INFO L913 BasicCegarLoop]: 73 mSDtfsCounter, 150 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-04-18 19:00:55,177 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 219 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-04-18 19:00:55,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48434 states. [2022-04-18 19:00:56,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48434 to 48434. [2022-04-18 19:00:56,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48434 states, 48261 states have (on average 3.0676944116367255) internal successors, (148050), 48433 states have internal predecessors, (148050), 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 19:00:56,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48434 states to 48434 states and 148050 transitions. [2022-04-18 19:00:56,728 INFO L78 Accepts]: Start accepts. Automaton has 48434 states and 148050 transitions. Word has length 13 [2022-04-18 19:00:56,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:00:56,728 INFO L478 AbstractCegarLoop]: Abstraction has 48434 states and 148050 transitions. [2022-04-18 19:00:56,728 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 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 19:00:56,728 INFO L276 IsEmpty]: Start isEmpty. Operand 48434 states and 148050 transitions. [2022-04-18 19:00:56,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-04-18 19:00:56,734 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:00:56,734 INFO L499 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1] [2022-04-18 19:00:56,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-04-18 19:00:56,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2022-04-18 19:00:57,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-04-18 19:00:57,339 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3,14 /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/cvc4 --incremental --print-success --lang smt,15 /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 19:00:57,340 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 84 more)] === [2022-04-18 19:00:57,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:00:57,341 INFO L85 PathProgramCache]: Analyzing trace with hash 134123487, now seen corresponding path program 2 times [2022-04-18 19:00:57,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-04-18 19:00:57,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [536525086] [2022-04-18 19:00:57,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-18 19:00:57,342 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-04-18 19:00:57,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat [2022-04-18 19:00:57,342 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-04-18 19:00:57,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-04-18 19:00:57,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-18 19:00:57,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-04-18 19:00:57,543 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 19:00:57,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:00:57,657 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-04-18 19:00:57,658 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 19:00:57,658 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (86 of 87 remaining) [2022-04-18 19:00:57,658 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (85 of 87 remaining) [2022-04-18 19:00:57,658 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (84 of 87 remaining) [2022-04-18 19:00:57,658 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (83 of 87 remaining) [2022-04-18 19:00:57,658 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (82 of 87 remaining) [2022-04-18 19:00:57,658 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (81 of 87 remaining) [2022-04-18 19:00:57,658 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr14ASSERT_VIOLATIONDATA_RACE (80 of 87 remaining) [2022-04-18 19:00:57,658 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr15ASSERT_VIOLATIONDATA_RACE (79 of 87 remaining) [2022-04-18 19:00:57,659 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (78 of 87 remaining) [2022-04-18 19:00:57,659 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (77 of 87 remaining) [2022-04-18 19:00:57,659 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr16ASSERT_VIOLATIONDATA_RACE (76 of 87 remaining) [2022-04-18 19:00:57,659 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr17ASSERT_VIOLATIONDATA_RACE (75 of 87 remaining) [2022-04-18 19:00:57,659 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (74 of 87 remaining) [2022-04-18 19:00:57,659 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (73 of 87 remaining) [2022-04-18 19:00:57,659 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr24ASSERT_VIOLATIONDATA_RACE (72 of 87 remaining) [2022-04-18 19:00:57,659 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr25ASSERT_VIOLATIONDATA_RACE (71 of 87 remaining) [2022-04-18 19:00:57,659 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr26ASSERT_VIOLATIONDATA_RACE (70 of 87 remaining) [2022-04-18 19:00:57,659 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr18ASSERT_VIOLATIONDATA_RACE (69 of 87 remaining) [2022-04-18 19:00:57,660 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr19ASSERT_VIOLATIONDATA_RACE (68 of 87 remaining) [2022-04-18 19:00:57,660 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr20ASSERT_VIOLATIONDATA_RACE (67 of 87 remaining) [2022-04-18 19:00:57,660 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr21ASSERT_VIOLATIONDATA_RACE (66 of 87 remaining) [2022-04-18 19:00:57,660 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr22ASSERT_VIOLATIONDATA_RACE (65 of 87 remaining) [2022-04-18 19:00:57,660 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr23ASSERT_VIOLATIONDATA_RACE (64 of 87 remaining) [2022-04-18 19:00:57,660 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4ASSERT_VIOLATIONDATA_RACE (63 of 87 remaining) [2022-04-18 19:00:57,660 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr5ASSERT_VIOLATIONDATA_RACE (62 of 87 remaining) [2022-04-18 19:00:57,660 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr6ASSERT_VIOLATIONDATA_RACE (61 of 87 remaining) [2022-04-18 19:00:57,660 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr7ASSERT_VIOLATIONDATA_RACE (60 of 87 remaining) [2022-04-18 19:00:57,660 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr8ASSERT_VIOLATIONDATA_RACE (59 of 87 remaining) [2022-04-18 19:00:57,661 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr9ASSERT_VIOLATIONDATA_RACE (58 of 87 remaining) [2022-04-18 19:00:57,661 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr10ASSERT_VIOLATIONDATA_RACE (57 of 87 remaining) [2022-04-18 19:00:57,661 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr11ASSERT_VIOLATIONDATA_RACE (56 of 87 remaining) [2022-04-18 19:00:57,661 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr12ASSERT_VIOLATIONDATA_RACE (55 of 87 remaining) [2022-04-18 19:00:57,661 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr13ASSERT_VIOLATIONDATA_RACE (54 of 87 remaining) [2022-04-18 19:00:57,661 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr14ASSERT_VIOLATIONDATA_RACE (53 of 87 remaining) [2022-04-18 19:00:57,661 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr15ASSERT_VIOLATIONDATA_RACE (52 of 87 remaining) [2022-04-18 19:00:57,661 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (51 of 87 remaining) [2022-04-18 19:00:57,661 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (50 of 87 remaining) [2022-04-18 19:00:57,662 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr16ASSERT_VIOLATIONDATA_RACE (49 of 87 remaining) [2022-04-18 19:00:57,662 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr17ASSERT_VIOLATIONDATA_RACE (48 of 87 remaining) [2022-04-18 19:00:57,662 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (47 of 87 remaining) [2022-04-18 19:00:57,662 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (46 of 87 remaining) [2022-04-18 19:00:57,662 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr24ASSERT_VIOLATIONDATA_RACE (45 of 87 remaining) [2022-04-18 19:00:57,662 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr25ASSERT_VIOLATIONDATA_RACE (44 of 87 remaining) [2022-04-18 19:00:57,662 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr26ASSERT_VIOLATIONDATA_RACE (43 of 87 remaining) [2022-04-18 19:00:57,662 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr18ASSERT_VIOLATIONDATA_RACE (42 of 87 remaining) [2022-04-18 19:00:57,662 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr19ASSERT_VIOLATIONDATA_RACE (41 of 87 remaining) [2022-04-18 19:00:57,662 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr20ASSERT_VIOLATIONDATA_RACE (40 of 87 remaining) [2022-04-18 19:00:57,663 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr21ASSERT_VIOLATIONDATA_RACE (39 of 87 remaining) [2022-04-18 19:00:57,663 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr22ASSERT_VIOLATIONDATA_RACE (38 of 87 remaining) [2022-04-18 19:00:57,663 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr23ASSERT_VIOLATIONDATA_RACE (37 of 87 remaining) [2022-04-18 19:00:57,663 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4ASSERT_VIOLATIONDATA_RACE (36 of 87 remaining) [2022-04-18 19:00:57,663 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr5ASSERT_VIOLATIONDATA_RACE (35 of 87 remaining) [2022-04-18 19:00:57,663 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr6ASSERT_VIOLATIONDATA_RACE (34 of 87 remaining) [2022-04-18 19:00:57,663 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr7ASSERT_VIOLATIONDATA_RACE (33 of 87 remaining) [2022-04-18 19:00:57,663 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr8ASSERT_VIOLATIONDATA_RACE (32 of 87 remaining) [2022-04-18 19:00:57,663 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr9ASSERT_VIOLATIONDATA_RACE (31 of 87 remaining) [2022-04-18 19:00:57,663 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr10ASSERT_VIOLATIONDATA_RACE (30 of 87 remaining) [2022-04-18 19:00:57,664 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr11ASSERT_VIOLATIONDATA_RACE (29 of 87 remaining) [2022-04-18 19:00:57,664 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr12ASSERT_VIOLATIONDATA_RACE (28 of 87 remaining) [2022-04-18 19:00:57,664 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr13ASSERT_VIOLATIONDATA_RACE (27 of 87 remaining) [2022-04-18 19:00:57,664 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr14ASSERT_VIOLATIONDATA_RACE (26 of 87 remaining) [2022-04-18 19:00:57,664 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr15ASSERT_VIOLATIONDATA_RACE (25 of 87 remaining) [2022-04-18 19:00:57,664 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (24 of 87 remaining) [2022-04-18 19:00:57,664 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (23 of 87 remaining) [2022-04-18 19:00:57,664 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr16ASSERT_VIOLATIONDATA_RACE (22 of 87 remaining) [2022-04-18 19:00:57,664 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr17ASSERT_VIOLATIONDATA_RACE (21 of 87 remaining) [2022-04-18 19:00:57,664 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (20 of 87 remaining) [2022-04-18 19:00:57,665 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (19 of 87 remaining) [2022-04-18 19:00:57,665 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr24ASSERT_VIOLATIONDATA_RACE (18 of 87 remaining) [2022-04-18 19:00:57,665 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr25ASSERT_VIOLATIONDATA_RACE (17 of 87 remaining) [2022-04-18 19:00:57,665 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr26ASSERT_VIOLATIONDATA_RACE (16 of 87 remaining) [2022-04-18 19:00:57,665 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr18ASSERT_VIOLATIONDATA_RACE (15 of 87 remaining) [2022-04-18 19:00:57,665 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr19ASSERT_VIOLATIONDATA_RACE (14 of 87 remaining) [2022-04-18 19:00:57,665 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr20ASSERT_VIOLATIONDATA_RACE (13 of 87 remaining) [2022-04-18 19:00:57,665 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr21ASSERT_VIOLATIONDATA_RACE (12 of 87 remaining) [2022-04-18 19:00:57,665 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr22ASSERT_VIOLATIONDATA_RACE (11 of 87 remaining) [2022-04-18 19:00:57,665 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr23ASSERT_VIOLATIONDATA_RACE (10 of 87 remaining) [2022-04-18 19:00:57,665 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4ASSERT_VIOLATIONDATA_RACE (9 of 87 remaining) [2022-04-18 19:00:57,665 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr5ASSERT_VIOLATIONDATA_RACE (8 of 87 remaining) [2022-04-18 19:00:57,666 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr6ASSERT_VIOLATIONDATA_RACE (7 of 87 remaining) [2022-04-18 19:00:57,666 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr7ASSERT_VIOLATIONDATA_RACE (6 of 87 remaining) [2022-04-18 19:00:57,666 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr8ASSERT_VIOLATIONDATA_RACE (5 of 87 remaining) [2022-04-18 19:00:57,666 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr9ASSERT_VIOLATIONDATA_RACE (4 of 87 remaining) [2022-04-18 19:00:57,666 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr10ASSERT_VIOLATIONDATA_RACE (3 of 87 remaining) [2022-04-18 19:00:57,666 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr11ASSERT_VIOLATIONDATA_RACE (2 of 87 remaining) [2022-04-18 19:00:57,666 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr12ASSERT_VIOLATIONDATA_RACE (1 of 87 remaining) [2022-04-18 19:00:57,666 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr13ASSERT_VIOLATIONDATA_RACE (0 of 87 remaining) [2022-04-18 19:00:57,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-04-18 19:00:57,867 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/mathsat -unsat_core_generation=3 [2022-04-18 19:00:57,867 INFO L719 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2022-04-18 19:00:57,867 WARN L232 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 19:00:57,867 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-04-18 19:00:57,961 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-04-18 19:00:57,963 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 19:00:57,963 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 19:00:57,963 INFO L341 AbstractCegarLoop]: Starting to check reachability of 114 error locations. [2022-04-18 19:00:57,968 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 19:00:57,968 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 784 places, 820 transitions, 1670 flow [2022-04-18 19:00:57,968 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 784 places, 820 transitions, 1670 flow [2022-04-18 19:00:57,968 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 784 places, 820 transitions, 1670 flow [2022-04-18 19:00:58,293 INFO L129 PetriNetUnfolder]: 58/982 cut-off events. [2022-04-18 19:00:58,293 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-04-18 19:00:58,335 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1010 conditions, 982 events. 58/982 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 4672 event pairs, 1 based on Foata normal form. 0/827 useless extension candidates. Maximal degree in co-relation 796. Up to 16 conditions per place. [2022-04-18 19:00:58,495 INFO L116 LiptonReduction]: Number of co-enabled transitions 382320 Killed by 15