./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-2.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/stack-2.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 1c5d098180a5596f0a60d3177354c69a5ee6da68b8191dc75b6c33b291ef0421 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 20:14:08,905 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 20:14:08,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 20:14:08,926 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 20:14:08,926 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 20:14:08,927 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 20:14:08,929 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 20:14:08,931 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 20:14:08,932 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 20:14:08,932 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 20:14:08,933 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 20:14:08,934 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 20:14:08,934 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 20:14:08,935 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 20:14:08,935 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 20:14:08,936 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 20:14:08,936 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 20:14:08,937 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 20:14:08,938 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 20:14:08,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 20:14:08,940 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 20:14:08,941 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 20:14:08,941 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 20:14:08,942 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 20:14:08,942 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 20:14:08,944 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 20:14:08,944 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 20:14:08,945 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 20:14:08,945 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 20:14:08,946 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 20:14:08,946 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 20:14:08,946 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 20:14:08,947 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 20:14:08,947 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 20:14:08,948 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 20:14:08,948 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 20:14:08,949 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 20:14:08,949 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 20:14:08,949 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 20:14:08,950 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 20:14:08,950 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 20:14:08,951 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 20:14:08,951 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-04-18 20:14:08,966 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 20:14:08,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 20:14:08,967 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 20:14:08,967 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 20:14:08,968 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 20:14:08,968 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 20:14:08,968 INFO L138 SettingsManager]: * User list type=DISABLED [2022-04-18 20:14:08,968 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-04-18 20:14:08,968 INFO L138 SettingsManager]: * Explicit value domain=true [2022-04-18 20:14:08,968 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-04-18 20:14:08,969 INFO L138 SettingsManager]: * Octagon Domain=false [2022-04-18 20:14:08,969 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-04-18 20:14:08,969 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-04-18 20:14:08,969 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-04-18 20:14:08,969 INFO L138 SettingsManager]: * Interval Domain=false [2022-04-18 20:14:08,969 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-04-18 20:14:08,969 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-04-18 20:14:08,970 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-04-18 20:14:08,970 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 20:14:08,970 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 20:14:08,970 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 20:14:08,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 20:14:08,971 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 20:14:08,971 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 20:14:08,971 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 20:14:08,971 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 20:14:08,971 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 20:14:08,971 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 20:14:08,971 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 20:14:08,972 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 20:14:08,972 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 20:14:08,972 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 20:14:08,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 20:14:08,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 20:14:08,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 20:14:08,972 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 20:14:08,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 20:14:08,973 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 20:14:08,973 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-04-18 20:14:08,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 20:14:08,973 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 20:14:08,973 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-18 20:14:08,973 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-18 20:14:08,973 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c5d098180a5596f0a60d3177354c69a5ee6da68b8191dc75b6c33b291ef0421 [2022-04-18 20:14:09,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 20:14:09,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 20:14:09,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 20:14:09,202 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 20:14:09,202 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 20:14:09,203 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-2.i [2022-04-18 20:14:09,242 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8974bbed5/d6853cd1d3fe48fb91b18aac130242fd/FLAGa48734001 [2022-04-18 20:14:09,662 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 20:14:09,665 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-2.i [2022-04-18 20:14:09,679 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8974bbed5/d6853cd1d3fe48fb91b18aac130242fd/FLAGa48734001 [2022-04-18 20:14:10,060 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8974bbed5/d6853cd1d3fe48fb91b18aac130242fd [2022-04-18 20:14:10,063 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 20:14:10,064 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 20:14:10,065 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 20:14:10,065 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 20:14:10,079 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 20:14:10,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 08:14:10" (1/1) ... [2022-04-18 20:14:10,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2724a8d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:14:10, skipping insertion in model container [2022-04-18 20:14:10,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 08:14:10" (1/1) ... [2022-04-18 20:14:10,090 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 20:14:10,128 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 20:14:10,354 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/stack-2.i[41520,41533] [2022-04-18 20:14:10,395 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 20:14:10,406 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 20:14:10,443 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/stack-2.i[41520,41533] [2022-04-18 20:14:10,452 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 20:14:10,486 INFO L208 MainTranslator]: Completed translation [2022-04-18 20:14:10,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:14:10 WrapperNode [2022-04-18 20:14:10,487 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 20:14:10,487 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 20:14:10,488 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 20:14:10,488 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 20:14:10,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:14:10" (1/1) ... [2022-04-18 20:14:10,509 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:14:10" (1/1) ... [2022-04-18 20:14:10,531 INFO L137 Inliner]: procedures = 277, calls = 46, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 209 [2022-04-18 20:14:10,532 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 20:14:10,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 20:14:10,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 20:14:10,532 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 20:14:10,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:14:10" (1/1) ... [2022-04-18 20:14:10,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:14:10" (1/1) ... [2022-04-18 20:14:10,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:14:10" (1/1) ... [2022-04-18 20:14:10,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:14:10" (1/1) ... [2022-04-18 20:14:10,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:14:10" (1/1) ... [2022-04-18 20:14:10,551 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:14:10" (1/1) ... [2022-04-18 20:14:10,552 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:14:10" (1/1) ... [2022-04-18 20:14:10,554 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 20:14:10,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 20:14:10,555 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 20:14:10,555 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 20:14:10,556 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:14:10" (1/1) ... [2022-04-18 20:14:10,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 20:14:10,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 20:14:10,617 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 20:14:10,636 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 20:14:10,656 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-04-18 20:14:10,656 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-04-18 20:14:10,656 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-04-18 20:14:10,656 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-04-18 20:14:10,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 20:14:10,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 20:14:10,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 20:14:10,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 20:14:10,657 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-04-18 20:14:10,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 20:14:10,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 20:14:10,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 20:14:10,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 20:14:10,658 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 20:14:10,807 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 20:14:10,808 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 20:14:11,112 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 20:14:11,123 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 20:14:11,123 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-04-18 20:14:11,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 08:14:11 BoogieIcfgContainer [2022-04-18 20:14:11,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 20:14:11,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 20:14:11,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 20:14:11,130 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 20:14:11,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 08:14:10" (1/3) ... [2022-04-18 20:14:11,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b609dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 08:14:11, skipping insertion in model container [2022-04-18 20:14:11,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:14:10" (2/3) ... [2022-04-18 20:14:11,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b609dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 08:14:11, skipping insertion in model container [2022-04-18 20:14:11,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 08:14:11" (3/3) ... [2022-04-18 20:14:11,132 INFO L111 eAbstractionObserver]: Analyzing ICFG stack-2.i [2022-04-18 20:14:11,136 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 20:14:11,136 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 20:14:11,137 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-04-18 20:14:11,137 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 20:14:11,243 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-04-18 20:14:11,286 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 20:14:11,293 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 20:14:11,293 INFO L341 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2022-04-18 20:14:11,304 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 20:14:11,314 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 242 places, 245 transitions, 506 flow [2022-04-18 20:14:11,316 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 242 places, 245 transitions, 506 flow [2022-04-18 20:14:11,317 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 242 places, 245 transitions, 506 flow [2022-04-18 20:14:11,398 INFO L129 PetriNetUnfolder]: 10/243 cut-off events. [2022-04-18 20:14:11,398 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-04-18 20:14:11,404 INFO L84 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 243 events. 10/243 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 592 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 191. Up to 3 conditions per place. [2022-04-18 20:14:11,413 INFO L116 LiptonReduction]: Number of co-enabled transitions 20432 [2022-04-18 20:14:15,477 INFO L131 LiptonReduction]: Checked pairs total: 69346 [2022-04-18 20:14:15,477 INFO L133 LiptonReduction]: Total number of compositions: 182 [2022-04-18 20:14:15,482 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 89 places, 88 transitions, 192 flow [2022-04-18 20:14:15,707 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 7968 states, 7863 states have (on average 3.010428589596846) internal successors, (23671), 7967 states have internal predecessors, (23671), 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 20:14:15,726 INFO L276 IsEmpty]: Start isEmpty. Operand has 7968 states, 7863 states have (on average 3.010428589596846) internal successors, (23671), 7967 states have internal predecessors, (23671), 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 20:14:15,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-04-18 20:14:15,730 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 20:14:15,730 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-04-18 20:14:15,731 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2022-04-18 20:14:15,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 20:14:15,734 INFO L85 PathProgramCache]: Analyzing trace with hash 880032349, now seen corresponding path program 1 times [2022-04-18 20:14:15,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 20:14:15,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598062225] [2022-04-18 20:14:15,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 20:14:15,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 20:14:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 20:14:15,868 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 20:14:15,869 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 20:14:15,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598062225] [2022-04-18 20:14:15,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598062225] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 20:14:15,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 20:14:15,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 20:14:15,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671993368] [2022-04-18 20:14:15,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 20:14:15,873 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 20:14:15,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 20:14:15,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 20:14:15,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 20:14:15,904 INFO L87 Difference]: Start difference. First operand has 7968 states, 7863 states have (on average 3.010428589596846) internal successors, (23671), 7967 states have internal predecessors, (23671), 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, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 20:14:16,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 20:14:16,037 INFO L93 Difference]: Finished difference Result 7968 states and 23421 transitions. [2022-04-18 20:14:16,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 20:14:16,039 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-04-18 20:14:16,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 20:14:16,083 INFO L225 Difference]: With dead ends: 7968 [2022-04-18 20:14:16,084 INFO L226 Difference]: Without dead ends: 7967 [2022-04-18 20:14:16,084 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 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 20:14:16,086 INFO L913 BasicCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-18 20:14:16,087 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-18 20:14:16,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7967 states. [2022-04-18 20:14:16,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7967 to 7967. [2022-04-18 20:14:16,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7967 states, 7863 states have (on average 2.9783797532748313) internal successors, (23419), 7966 states have internal predecessors, (23419), 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 20:14:16,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7967 states to 7967 states and 23419 transitions. [2022-04-18 20:14:16,393 INFO L78 Accepts]: Start accepts. Automaton has 7967 states and 23419 transitions. Word has length 5 [2022-04-18 20:14:16,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 20:14:16,394 INFO L478 AbstractCegarLoop]: Abstraction has 7967 states and 23419 transitions. [2022-04-18 20:14:16,394 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 20:14:16,394 INFO L276 IsEmpty]: Start isEmpty. Operand 7967 states and 23419 transitions. [2022-04-18 20:14:16,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-04-18 20:14:16,395 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 20:14:16,395 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-04-18 20:14:16,395 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 20:14:16,396 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2022-04-18 20:14:16,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 20:14:16,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1511199641, now seen corresponding path program 1 times [2022-04-18 20:14:16,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 20:14:16,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084069083] [2022-04-18 20:14:16,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 20:14:16,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 20:14:16,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 20:14:16,493 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 20:14:16,494 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 20:14:16,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084069083] [2022-04-18 20:14:16,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084069083] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 20:14:16,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 20:14:16,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 20:14:16,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057542759] [2022-04-18 20:14:16,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 20:14:16,497 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 20:14:16,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 20:14:16,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 20:14:16,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 20:14:16,498 INFO L87 Difference]: Start difference. First operand 7967 states and 23419 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 20:14:16,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 20:14:16,727 INFO L93 Difference]: Finished difference Result 10904 states and 30675 transitions. [2022-04-18 20:14:16,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 20:14:16,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-04-18 20:14:16,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 20:14:16,775 INFO L225 Difference]: With dead ends: 10904 [2022-04-18 20:14:16,775 INFO L226 Difference]: Without dead ends: 10904 [2022-04-18 20:14:16,776 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 20:14:16,777 INFO L913 BasicCegarLoop]: 49 mSDtfsCounter, 67 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-18 20:14:16,777 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 76 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-18 20:14:16,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10904 states. [2022-04-18 20:14:17,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10904 to 8174. [2022-04-18 20:14:17,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8174 states, 8088 states have (on average 2.84582096933729) internal successors, (23017), 8173 states have internal predecessors, (23017), 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 20:14:17,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8174 states to 8174 states and 23017 transitions. [2022-04-18 20:14:17,189 INFO L78 Accepts]: Start accepts. Automaton has 8174 states and 23017 transitions. Word has length 6 [2022-04-18 20:14:17,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 20:14:17,189 INFO L478 AbstractCegarLoop]: Abstraction has 8174 states and 23017 transitions. [2022-04-18 20:14:17,190 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 20:14:17,190 INFO L276 IsEmpty]: Start isEmpty. Operand 8174 states and 23017 transitions. [2022-04-18 20:14:17,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-04-18 20:14:17,191 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 20:14:17,191 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 20:14:17,191 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 20:14:17,191 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2022-04-18 20:14:17,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 20:14:17,192 INFO L85 PathProgramCache]: Analyzing trace with hash 375833801, now seen corresponding path program 1 times [2022-04-18 20:14:17,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 20:14:17,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138685434] [2022-04-18 20:14:17,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 20:14:17,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 20:14:17,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 20:14:17,242 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 20:14:17,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 20:14:17,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138685434] [2022-04-18 20:14:17,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138685434] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 20:14:17,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 20:14:17,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 20:14:17,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915613793] [2022-04-18 20:14:17,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 20:14:17,243 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 20:14:17,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 20:14:17,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 20:14:17,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 20:14:17,243 INFO L87 Difference]: Start difference. First operand 8174 states and 23017 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 20:14:17,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 20:14:17,384 INFO L93 Difference]: Finished difference Result 14610 states and 41729 transitions. [2022-04-18 20:14:17,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 20:14:17,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-04-18 20:14:17,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 20:14:17,458 INFO L225 Difference]: With dead ends: 14610 [2022-04-18 20:14:17,458 INFO L226 Difference]: Without dead ends: 14610 [2022-04-18 20:14:17,458 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 20:14:17,460 INFO L913 BasicCegarLoop]: 63 mSDtfsCounter, 75 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-18 20:14:17,462 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 101 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-18 20:14:17,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14610 states. [2022-04-18 20:14:17,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14610 to 8365. [2022-04-18 20:14:17,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8365 states, 8285 states have (on average 2.8744719372359686) internal successors, (23815), 8364 states have internal predecessors, (23815), 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 20:14:17,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8365 states to 8365 states and 23815 transitions. [2022-04-18 20:14:17,842 INFO L78 Accepts]: Start accepts. Automaton has 8365 states and 23815 transitions. Word has length 8 [2022-04-18 20:14:17,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 20:14:17,843 INFO L478 AbstractCegarLoop]: Abstraction has 8365 states and 23815 transitions. [2022-04-18 20:14:17,843 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 20:14:17,845 INFO L276 IsEmpty]: Start isEmpty. Operand 8365 states and 23815 transitions. [2022-04-18 20:14:17,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-04-18 20:14:17,846 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 20:14:17,846 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 20:14:17,847 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 20:14:17,847 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2022-04-18 20:14:17,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 20:14:17,847 INFO L85 PathProgramCache]: Analyzing trace with hash 318483832, now seen corresponding path program 1 times [2022-04-18 20:14:17,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 20:14:17,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342800151] [2022-04-18 20:14:17,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 20:14:17,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 20:14:17,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 20:14:17,963 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 20:14:17,964 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 20:14:17,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342800151] [2022-04-18 20:14:17,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342800151] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 20:14:17,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 20:14:17,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 20:14:17,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836465886] [2022-04-18 20:14:17,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 20:14:17,967 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 20:14:17,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 20:14:17,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 20:14:17,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 20:14:17,970 INFO L87 Difference]: Start difference. First operand 8365 states and 23815 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 20:14:18,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 20:14:18,528 INFO L93 Difference]: Finished difference Result 13486 states and 37968 transitions. [2022-04-18 20:14:18,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 20:14:18,528 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-04-18 20:14:18,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 20:14:18,563 INFO L225 Difference]: With dead ends: 13486 [2022-04-18 20:14:18,564 INFO L226 Difference]: Without dead ends: 13486 [2022-04-18 20:14:18,564 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 20:14:18,566 INFO L913 BasicCegarLoop]: 122 mSDtfsCounter, 234 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-18 20:14:18,567 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 276 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-18 20:14:18,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13486 states. [2022-04-18 20:14:18,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13486 to 12262. [2022-04-18 20:14:18,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12262 states, 12182 states have (on average 2.91413560991627) internal successors, (35500), 12261 states have internal predecessors, (35500), 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 20:14:18,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12262 states to 12262 states and 35500 transitions. [2022-04-18 20:14:18,901 INFO L78 Accepts]: Start accepts. Automaton has 12262 states and 35500 transitions. Word has length 10 [2022-04-18 20:14:18,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 20:14:18,901 INFO L478 AbstractCegarLoop]: Abstraction has 12262 states and 35500 transitions. [2022-04-18 20:14:18,901 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 20:14:18,902 INFO L276 IsEmpty]: Start isEmpty. Operand 12262 states and 35500 transitions. [2022-04-18 20:14:18,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-04-18 20:14:18,903 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 20:14:18,903 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 20:14:18,903 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 20:14:18,903 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2022-04-18 20:14:18,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 20:14:18,904 INFO L85 PathProgramCache]: Analyzing trace with hash 778974232, now seen corresponding path program 1 times [2022-04-18 20:14:18,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 20:14:18,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850273243] [2022-04-18 20:14:18,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 20:14:18,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 20:14:18,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 20:14:18,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 20:14:18,937 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 20:14:18,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850273243] [2022-04-18 20:14:18,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850273243] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 20:14:18,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 20:14:18,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 20:14:18,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720190149] [2022-04-18 20:14:18,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 20:14:18,938 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 20:14:18,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 20:14:18,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 20:14:18,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 20:14:18,938 INFO L87 Difference]: Start difference. First operand 12262 states and 35500 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 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 20:14:19,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 20:14:19,077 INFO L93 Difference]: Finished difference Result 16655 states and 48308 transitions. [2022-04-18 20:14:19,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 20:14:19,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 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 20:14:19,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 20:14:19,140 INFO L225 Difference]: With dead ends: 16655 [2022-04-18 20:14:19,140 INFO L226 Difference]: Without dead ends: 16637 [2022-04-18 20:14:19,141 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 20:14:19,141 INFO L913 BasicCegarLoop]: 45 mSDtfsCounter, 52 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-18 20:14:19,141 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 84 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-18 20:14:19,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16637 states. [2022-04-18 20:14:19,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16637 to 15982. [2022-04-18 20:14:19,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15982 states, 15902 states have (on average 2.965413155577915) internal successors, (47156), 15981 states have internal predecessors, (47156), 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 20:14:19,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15982 states to 15982 states and 47156 transitions. [2022-04-18 20:14:19,600 INFO L78 Accepts]: Start accepts. Automaton has 15982 states and 47156 transitions. Word has length 10 [2022-04-18 20:14:19,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 20:14:19,601 INFO L478 AbstractCegarLoop]: Abstraction has 15982 states and 47156 transitions. [2022-04-18 20:14:19,601 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 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 20:14:19,602 INFO L276 IsEmpty]: Start isEmpty. Operand 15982 states and 47156 transitions. [2022-04-18 20:14:19,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-04-18 20:14:19,606 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 20:14:19,606 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 20:14:19,606 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-18 20:14:19,607 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2022-04-18 20:14:19,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 20:14:19,607 INFO L85 PathProgramCache]: Analyzing trace with hash -330028076, now seen corresponding path program 1 times [2022-04-18 20:14:19,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 20:14:19,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615006216] [2022-04-18 20:14:19,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 20:14:19,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 20:14:19,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 20:14:19,705 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 20:14:19,705 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 20:14:19,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615006216] [2022-04-18 20:14:19,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615006216] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 20:14:19,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 20:14:19,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 20:14:19,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270555699] [2022-04-18 20:14:19,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 20:14:19,706 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 20:14:19,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 20:14:19,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 20:14:19,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 20:14:19,707 INFO L87 Difference]: Start difference. First operand 15982 states and 47156 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 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 20:14:20,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 20:14:20,027 INFO L93 Difference]: Finished difference Result 17234 states and 50876 transitions. [2022-04-18 20:14:20,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 20:14:20,028 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 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 16 [2022-04-18 20:14:20,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 20:14:20,212 INFO L225 Difference]: With dead ends: 17234 [2022-04-18 20:14:20,213 INFO L226 Difference]: Without dead ends: 17234 [2022-04-18 20:14:20,213 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 20:14:20,214 INFO L913 BasicCegarLoop]: 74 mSDtfsCounter, 124 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-18 20:14:20,214 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 145 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-18 20:14:20,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17234 states. [2022-04-18 20:14:20,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17234 to 17234. [2022-04-18 20:14:20,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17234 states, 17154 states have (on average 2.9658388714002566) internal successors, (50876), 17233 states have internal predecessors, (50876), 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 20:14:20,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17234 states to 17234 states and 50876 transitions. [2022-04-18 20:14:20,620 INFO L78 Accepts]: Start accepts. Automaton has 17234 states and 50876 transitions. Word has length 16 [2022-04-18 20:14:20,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 20:14:20,621 INFO L478 AbstractCegarLoop]: Abstraction has 17234 states and 50876 transitions. [2022-04-18 20:14:20,621 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 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 20:14:20,621 INFO L276 IsEmpty]: Start isEmpty. Operand 17234 states and 50876 transitions. [2022-04-18 20:14:20,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-04-18 20:14:20,622 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 20:14:20,623 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 20:14:20,623 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-18 20:14:20,623 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2022-04-18 20:14:20,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 20:14:20,624 INFO L85 PathProgramCache]: Analyzing trace with hash 30891903, now seen corresponding path program 1 times [2022-04-18 20:14:20,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 20:14:20,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693484627] [2022-04-18 20:14:20,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 20:14:20,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 20:14:20,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 20:14:20,646 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 20:14:20,647 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 20:14:20,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693484627] [2022-04-18 20:14:20,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693484627] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 20:14:20,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 20:14:20,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 20:14:20,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631080529] [2022-04-18 20:14:20,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 20:14:20,648 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 20:14:20,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 20:14:20,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 20:14:20,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 20:14:20,648 INFO L87 Difference]: Start difference. First operand 17234 states and 50876 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 20:14:20,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 20:14:20,792 INFO L93 Difference]: Finished difference Result 23176 states and 68817 transitions. [2022-04-18 20:14:20,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 20:14:20,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 17 [2022-04-18 20:14:20,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 20:14:20,849 INFO L225 Difference]: With dead ends: 23176 [2022-04-18 20:14:20,849 INFO L226 Difference]: Without dead ends: 23176 [2022-04-18 20:14:20,849 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 20:14:20,850 INFO L913 BasicCegarLoop]: 50 mSDtfsCounter, 67 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-18 20:14:20,850 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 92 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-18 20:14:20,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23176 states. [2022-04-18 20:14:21,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23176 to 17283. [2022-04-18 20:14:21,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17283 states, 17203 states have (on average 2.9662849502993662) internal successors, (51029), 17282 states have internal predecessors, (51029), 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 20:14:21,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17283 states to 17283 states and 51029 transitions. [2022-04-18 20:14:21,318 INFO L78 Accepts]: Start accepts. Automaton has 17283 states and 51029 transitions. Word has length 17 [2022-04-18 20:14:21,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 20:14:21,319 INFO L478 AbstractCegarLoop]: Abstraction has 17283 states and 51029 transitions. [2022-04-18 20:14:21,319 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 20:14:21,319 INFO L276 IsEmpty]: Start isEmpty. Operand 17283 states and 51029 transitions. [2022-04-18 20:14:21,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-18 20:14:21,321 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 20:14:21,321 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 20:14:21,321 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-18 20:14:21,321 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2022-04-18 20:14:21,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 20:14:21,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1431892593, now seen corresponding path program 1 times [2022-04-18 20:14:21,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 20:14:21,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240446031] [2022-04-18 20:14:21,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 20:14:21,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 20:14:21,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 20:14:21,443 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 20:14:21,443 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 20:14:21,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240446031] [2022-04-18 20:14:21,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240446031] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 20:14:21,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 20:14:21,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-18 20:14:21,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024027940] [2022-04-18 20:14:21,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 20:14:21,444 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-18 20:14:21,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 20:14:21,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-18 20:14:21,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-04-18 20:14:21,445 INFO L87 Difference]: Start difference. First operand 17283 states and 51029 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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 20:14:22,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 20:14:22,079 INFO L93 Difference]: Finished difference Result 22871 states and 64704 transitions. [2022-04-18 20:14:22,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-18 20:14:22,079 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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 20 [2022-04-18 20:14:22,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 20:14:22,273 INFO L225 Difference]: With dead ends: 22871 [2022-04-18 20:14:22,274 INFO L226 Difference]: Without dead ends: 22871 [2022-04-18 20:14:22,274 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-04-18 20:14:22,274 INFO L913 BasicCegarLoop]: 123 mSDtfsCounter, 477 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 1011 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-18 20:14:22,275 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [477 Valid, 453 Invalid, 1096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1011 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-18 20:14:22,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22871 states. [2022-04-18 20:14:22,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22871 to 17859. [2022-04-18 20:14:22,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17859 states, 17779 states have (on average 2.9723269025254515) internal successors, (52845), 17858 states have internal predecessors, (52845), 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 20:14:22,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17859 states to 17859 states and 52845 transitions. [2022-04-18 20:14:22,742 INFO L78 Accepts]: Start accepts. Automaton has 17859 states and 52845 transitions. Word has length 20 [2022-04-18 20:14:22,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 20:14:22,743 INFO L478 AbstractCegarLoop]: Abstraction has 17859 states and 52845 transitions. [2022-04-18 20:14:22,743 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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 20:14:22,743 INFO L276 IsEmpty]: Start isEmpty. Operand 17859 states and 52845 transitions. [2022-04-18 20:14:22,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-18 20:14:22,745 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 20:14:22,745 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 20:14:22,745 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-18 20:14:22,745 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2022-04-18 20:14:22,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 20:14:22,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1366301807, now seen corresponding path program 2 times [2022-04-18 20:14:22,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 20:14:22,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140958529] [2022-04-18 20:14:22,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 20:14:22,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 20:14:22,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 20:14:22,857 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 20:14:22,858 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 20:14:22,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140958529] [2022-04-18 20:14:22,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140958529] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 20:14:22,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 20:14:22,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-18 20:14:22,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672297654] [2022-04-18 20:14:22,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 20:14:22,859 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-18 20:14:22,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 20:14:22,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-18 20:14:22,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-04-18 20:14:22,859 INFO L87 Difference]: Start difference. First operand 17859 states and 52845 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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 20:14:23,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 20:14:23,661 INFO L93 Difference]: Finished difference Result 26094 states and 74569 transitions. [2022-04-18 20:14:23,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-18 20:14:23,661 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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 20 [2022-04-18 20:14:23,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 20:14:23,730 INFO L225 Difference]: With dead ends: 26094 [2022-04-18 20:14:23,731 INFO L226 Difference]: Without dead ends: 26094 [2022-04-18 20:14:23,731 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-04-18 20:14:23,731 INFO L913 BasicCegarLoop]: 126 mSDtfsCounter, 463 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 1281 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 1350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-18 20:14:23,732 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [463 Valid, 572 Invalid, 1350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1281 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-18 20:14:23,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26094 states. [2022-04-18 20:14:24,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26094 to 18459. [2022-04-18 20:14:24,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18459 states, 18379 states have (on average 2.9780183905544373) internal successors, (54733), 18458 states have internal predecessors, (54733), 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 20:14:24,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18459 states to 18459 states and 54733 transitions. [2022-04-18 20:14:24,332 INFO L78 Accepts]: Start accepts. Automaton has 18459 states and 54733 transitions. Word has length 20 [2022-04-18 20:14:24,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 20:14:24,332 INFO L478 AbstractCegarLoop]: Abstraction has 18459 states and 54733 transitions. [2022-04-18 20:14:24,333 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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 20:14:24,333 INFO L276 IsEmpty]: Start isEmpty. Operand 18459 states and 54733 transitions. [2022-04-18 20:14:24,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-18 20:14:24,335 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 20:14:24,335 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 20:14:24,335 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-04-18 20:14:24,335 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2022-04-18 20:14:24,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 20:14:24,336 INFO L85 PathProgramCache]: Analyzing trace with hash 603603087, now seen corresponding path program 3 times [2022-04-18 20:14:24,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 20:14:24,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687124207] [2022-04-18 20:14:24,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 20:14:24,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 20:14:24,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 20:14:24,438 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 20:14:24,439 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 20:14:24,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687124207] [2022-04-18 20:14:24,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687124207] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 20:14:24,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 20:14:24,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-18 20:14:24,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88989362] [2022-04-18 20:14:24,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 20:14:24,440 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-18 20:14:24,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 20:14:24,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-18 20:14:24,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-04-18 20:14:24,441 INFO L87 Difference]: Start difference. First operand 18459 states and 54733 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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 20:14:25,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 20:14:25,153 INFO L93 Difference]: Finished difference Result 29317 states and 84474 transitions. [2022-04-18 20:14:25,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-18 20:14:25,153 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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 20 [2022-04-18 20:14:25,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 20:14:25,220 INFO L225 Difference]: With dead ends: 29317 [2022-04-18 20:14:25,220 INFO L226 Difference]: Without dead ends: 29317 [2022-04-18 20:14:25,221 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=113, Unknown=0, NotChecked=0, Total=182 [2022-04-18 20:14:25,221 INFO L913 BasicCegarLoop]: 129 mSDtfsCounter, 499 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-18 20:14:25,221 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [499 Valid, 446 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-18 20:14:25,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29317 states. [2022-04-18 20:14:25,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29317 to 19059. [2022-04-18 20:14:25,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19059 states, 18979 states have (on average 2.983350018441435) internal successors, (56621), 19058 states have internal predecessors, (56621), 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 20:14:25,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19059 states to 19059 states and 56621 transitions. [2022-04-18 20:14:25,698 INFO L78 Accepts]: Start accepts. Automaton has 19059 states and 56621 transitions. Word has length 20 [2022-04-18 20:14:25,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 20:14:25,699 INFO L478 AbstractCegarLoop]: Abstraction has 19059 states and 56621 transitions. [2022-04-18 20:14:25,699 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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 20:14:25,699 INFO L276 IsEmpty]: Start isEmpty. Operand 19059 states and 56621 transitions. [2022-04-18 20:14:25,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-18 20:14:25,701 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 20:14:25,701 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 20:14:25,701 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-18 20:14:25,702 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2022-04-18 20:14:25,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 20:14:25,702 INFO L85 PathProgramCache]: Analyzing trace with hash 312467639, now seen corresponding path program 4 times [2022-04-18 20:14:25,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 20:14:25,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509047308] [2022-04-18 20:14:25,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 20:14:25,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 20:14:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 20:14:25,803 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 20:14:25,803 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 20:14:25,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509047308] [2022-04-18 20:14:25,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509047308] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 20:14:25,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 20:14:25,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-18 20:14:25,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63939671] [2022-04-18 20:14:25,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 20:14:25,805 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-18 20:14:25,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 20:14:25,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-18 20:14:25,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-04-18 20:14:25,806 INFO L87 Difference]: Start difference. First operand 19059 states and 56621 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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 20:14:26,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 20:14:26,657 INFO L93 Difference]: Finished difference Result 32540 states and 94379 transitions. [2022-04-18 20:14:26,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-18 20:14:26,657 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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 20 [2022-04-18 20:14:26,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 20:14:26,734 INFO L225 Difference]: With dead ends: 32540 [2022-04-18 20:14:26,734 INFO L226 Difference]: Without dead ends: 32540 [2022-04-18 20:14:26,734 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2022-04-18 20:14:26,735 INFO L913 BasicCegarLoop]: 132 mSDtfsCounter, 558 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 1286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-18 20:14:26,735 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [558 Valid, 521 Invalid, 1286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1182 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-18 20:14:26,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32540 states. [2022-04-18 20:14:27,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32540 to 19659. [2022-04-18 20:14:27,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19659 states, 19579 states have (on average 2.98835487001379) internal successors, (58509), 19658 states have internal predecessors, (58509), 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 20:14:27,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19659 states to 19659 states and 58509 transitions. [2022-04-18 20:14:27,136 INFO L78 Accepts]: Start accepts. Automaton has 19659 states and 58509 transitions. Word has length 20 [2022-04-18 20:14:27,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 20:14:27,137 INFO L478 AbstractCegarLoop]: Abstraction has 19659 states and 58509 transitions. [2022-04-18 20:14:27,137 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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 20:14:27,137 INFO L276 IsEmpty]: Start isEmpty. Operand 19659 states and 58509 transitions. [2022-04-18 20:14:27,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-18 20:14:27,139 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 20:14:27,139 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 20:14:27,139 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-04-18 20:14:27,140 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2022-04-18 20:14:27,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 20:14:27,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1495853938, now seen corresponding path program 1 times [2022-04-18 20:14:27,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 20:14:27,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852091611] [2022-04-18 20:14:27,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 20:14:27,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 20:14:27,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 20:14:27,251 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 20:14:27,252 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 20:14:27,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852091611] [2022-04-18 20:14:27,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852091611] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 20:14:27,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 20:14:27,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-18 20:14:27,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086696870] [2022-04-18 20:14:27,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 20:14:27,252 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-18 20:14:27,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 20:14:27,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-18 20:14:27,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-04-18 20:14:27,253 INFO L87 Difference]: Start difference. First operand 19659 states and 58509 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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 20:14:27,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 20:14:27,633 INFO L93 Difference]: Finished difference Result 21274 states and 63416 transitions. [2022-04-18 20:14:27,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-18 20:14:27,639 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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 20 [2022-04-18 20:14:27,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 20:14:27,691 INFO L225 Difference]: With dead ends: 21274 [2022-04-18 20:14:27,691 INFO L226 Difference]: Without dead ends: 21274 [2022-04-18 20:14:27,692 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2022-04-18 20:14:27,692 INFO L913 BasicCegarLoop]: 70 mSDtfsCounter, 305 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-18 20:14:27,693 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 184 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-18 20:14:27,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21274 states. [2022-04-18 20:14:28,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21274 to 19699. [2022-04-18 20:14:28,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19699 states, 19627 states have (on average 2.991644163652112) internal successors, (58717), 19698 states have internal predecessors, (58717), 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 20:14:28,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19699 states to 19699 states and 58717 transitions. [2022-04-18 20:14:28,094 INFO L78 Accepts]: Start accepts. Automaton has 19699 states and 58717 transitions. Word has length 20 [2022-04-18 20:14:28,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 20:14:28,094 INFO L478 AbstractCegarLoop]: Abstraction has 19699 states and 58717 transitions. [2022-04-18 20:14:28,094 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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 20:14:28,094 INFO L276 IsEmpty]: Start isEmpty. Operand 19699 states and 58717 transitions. [2022-04-18 20:14:28,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-18 20:14:28,097 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 20:14:28,097 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 20:14:28,097 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-04-18 20:14:28,097 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2022-04-18 20:14:28,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 20:14:28,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1349449669, now seen corresponding path program 5 times [2022-04-18 20:14:28,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 20:14:28,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530828368] [2022-04-18 20:14:28,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 20:14:28,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 20:14:28,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 20:14:28,188 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 20:14:28,189 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 20:14:28,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530828368] [2022-04-18 20:14:28,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530828368] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 20:14:28,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 20:14:28,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-18 20:14:28,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737814210] [2022-04-18 20:14:28,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 20:14:28,190 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-18 20:14:28,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 20:14:28,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-18 20:14:28,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-04-18 20:14:28,191 INFO L87 Difference]: Start difference. First operand 19699 states and 58717 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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 20:14:28,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 20:14:28,731 INFO L93 Difference]: Finished difference Result 23995 states and 71867 transitions. [2022-04-18 20:14:28,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-18 20:14:28,732 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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 20 [2022-04-18 20:14:28,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 20:14:28,789 INFO L225 Difference]: With dead ends: 23995 [2022-04-18 20:14:28,790 INFO L226 Difference]: Without dead ends: 23995 [2022-04-18 20:14:28,790 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2022-04-18 20:14:28,791 INFO L913 BasicCegarLoop]: 121 mSDtfsCounter, 373 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-18 20:14:28,791 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [373 Valid, 312 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-18 20:14:28,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23995 states. [2022-04-18 20:14:29,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23995 to 10488. [2022-04-18 20:14:29,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10488 states, 10449 states have (on average 2.900564647334673) internal successors, (30308), 10487 states have internal predecessors, (30308), 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 20:14:29,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10488 states to 10488 states and 30308 transitions. [2022-04-18 20:14:29,086 INFO L78 Accepts]: Start accepts. Automaton has 10488 states and 30308 transitions. Word has length 20 [2022-04-18 20:14:29,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 20:14:29,087 INFO L478 AbstractCegarLoop]: Abstraction has 10488 states and 30308 transitions. [2022-04-18 20:14:29,087 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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 20:14:29,087 INFO L276 IsEmpty]: Start isEmpty. Operand 10488 states and 30308 transitions. [2022-04-18 20:14:29,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-04-18 20:14:29,089 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 20:14:29,089 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 20:14:29,089 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-04-18 20:14:29,089 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2022-04-18 20:14:29,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 20:14:29,090 INFO L85 PathProgramCache]: Analyzing trace with hash 461999086, now seen corresponding path program 1 times [2022-04-18 20:14:29,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 20:14:29,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651457221] [2022-04-18 20:14:29,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 20:14:29,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 20:14:29,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 20:14:29,117 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 20:14:29,118 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 20:14:29,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651457221] [2022-04-18 20:14:29,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651457221] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 20:14:29,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 20:14:29,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 20:14:29,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671619469] [2022-04-18 20:14:29,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 20:14:29,119 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 20:14:29,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 20:14:29,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 20:14:29,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 20:14:29,120 INFO L87 Difference]: Start difference. First operand 10488 states and 30308 transitions. Second operand has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 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 20:14:29,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 20:14:29,224 INFO L93 Difference]: Finished difference Result 10633 states and 30724 transitions. [2022-04-18 20:14:29,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 20:14:29,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 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 22 [2022-04-18 20:14:29,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 20:14:29,244 INFO L225 Difference]: With dead ends: 10633 [2022-04-18 20:14:29,245 INFO L226 Difference]: Without dead ends: 10633 [2022-04-18 20:14:29,245 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 20:14:29,245 INFO L913 BasicCegarLoop]: 53 mSDtfsCounter, 37 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-18 20:14:29,246 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 79 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-18 20:14:29,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10633 states. [2022-04-18 20:14:29,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10633 to 10633. [2022-04-18 20:14:29,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10633 states, 10598 states have (on average 2.89903755425552) internal successors, (30724), 10632 states have internal predecessors, (30724), 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 20:14:29,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10633 states to 10633 states and 30724 transitions. [2022-04-18 20:14:29,429 INFO L78 Accepts]: Start accepts. Automaton has 10633 states and 30724 transitions. Word has length 22 [2022-04-18 20:14:29,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 20:14:29,430 INFO L478 AbstractCegarLoop]: Abstraction has 10633 states and 30724 transitions. [2022-04-18 20:14:29,430 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 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 20:14:29,430 INFO L276 IsEmpty]: Start isEmpty. Operand 10633 states and 30724 transitions. [2022-04-18 20:14:29,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-04-18 20:14:29,433 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 20:14:29,433 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 20:14:29,433 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-04-18 20:14:29,433 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2022-04-18 20:14:29,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 20:14:29,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1946546273, now seen corresponding path program 1 times [2022-04-18 20:14:29,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 20:14:29,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891653940] [2022-04-18 20:14:29,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 20:14:29,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 20:14:29,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 20:14:29,456 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 20:14:29,456 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 20:14:29,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891653940] [2022-04-18 20:14:29,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891653940] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 20:14:29,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 20:14:29,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 20:14:29,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711978160] [2022-04-18 20:14:29,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 20:14:29,457 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 20:14:29,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 20:14:29,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 20:14:29,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 20:14:29,458 INFO L87 Difference]: Start difference. First operand 10633 states and 30724 transitions. Second operand has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 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 20:14:29,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 20:14:29,553 INFO L93 Difference]: Finished difference Result 10785 states and 31125 transitions. [2022-04-18 20:14:29,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 20:14:29,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 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 25 [2022-04-18 20:14:29,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 20:14:29,574 INFO L225 Difference]: With dead ends: 10785 [2022-04-18 20:14:29,574 INFO L226 Difference]: Without dead ends: 10785 [2022-04-18 20:14:29,576 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 20:14:29,576 INFO L913 BasicCegarLoop]: 60 mSDtfsCounter, 40 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-18 20:14:29,576 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 97 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-18 20:14:29,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10785 states. [2022-04-18 20:14:29,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10785 to 10785. [2022-04-18 20:14:29,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10785 states, 10754 states have (on average 2.894271898828343) internal successors, (31125), 10784 states have internal predecessors, (31125), 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 20:14:29,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10785 states to 10785 states and 31125 transitions. [2022-04-18 20:14:29,763 INFO L78 Accepts]: Start accepts. Automaton has 10785 states and 31125 transitions. Word has length 25 [2022-04-18 20:14:29,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 20:14:29,763 INFO L478 AbstractCegarLoop]: Abstraction has 10785 states and 31125 transitions. [2022-04-18 20:14:29,764 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 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 20:14:29,764 INFO L276 IsEmpty]: Start isEmpty. Operand 10785 states and 31125 transitions. [2022-04-18 20:14:29,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-04-18 20:14:29,766 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 20:14:29,766 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 20:14:29,766 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-04-18 20:14:29,767 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2022-04-18 20:14:29,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 20:14:29,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1615812866, now seen corresponding path program 1 times [2022-04-18 20:14:29,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 20:14:29,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569959748] [2022-04-18 20:14:29,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 20:14:29,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 20:14:29,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 20:14:29,788 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 20:14:29,788 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 20:14:29,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569959748] [2022-04-18 20:14:29,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569959748] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 20:14:29,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 20:14:29,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 20:14:29,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426120650] [2022-04-18 20:14:29,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 20:14:29,789 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 20:14:29,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 20:14:29,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 20:14:29,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 20:14:29,790 INFO L87 Difference]: Start difference. First operand 10785 states and 31125 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 20:14:29,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 20:14:29,837 INFO L93 Difference]: Finished difference Result 1657 states and 4138 transitions. [2022-04-18 20:14:29,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 20:14:29,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 29 [2022-04-18 20:14:29,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 20:14:29,839 INFO L225 Difference]: With dead ends: 1657 [2022-04-18 20:14:29,839 INFO L226 Difference]: Without dead ends: 1657 [2022-04-18 20:14:29,839 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 20:14:29,840 INFO L913 BasicCegarLoop]: 40 mSDtfsCounter, 64 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 20:14:29,840 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 49 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 20:14:29,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1657 states. [2022-04-18 20:14:29,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1657 to 1449. [2022-04-18 20:14:29,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 1444 states have (on average 2.4695290858725762) internal successors, (3566), 1448 states have internal predecessors, (3566), 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 20:14:29,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 3566 transitions. [2022-04-18 20:14:29,856 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 3566 transitions. Word has length 29 [2022-04-18 20:14:29,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 20:14:29,857 INFO L478 AbstractCegarLoop]: Abstraction has 1449 states and 3566 transitions. [2022-04-18 20:14:29,857 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 20:14:29,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 3566 transitions. [2022-04-18 20:14:29,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-04-18 20:14:29,859 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 20:14:29,859 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 20:14:29,859 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-04-18 20:14:29,859 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2022-04-18 20:14:29,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 20:14:29,859 INFO L85 PathProgramCache]: Analyzing trace with hash 454321079, now seen corresponding path program 1 times [2022-04-18 20:14:29,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 20:14:29,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999771105] [2022-04-18 20:14:29,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 20:14:29,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 20:14:29,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 20:14:29,898 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 20:14:29,898 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 20:14:29,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999771105] [2022-04-18 20:14:29,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999771105] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 20:14:29,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53500296] [2022-04-18 20:14:29,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 20:14:29,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 20:14:29,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 20:14:29,901 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 20:14:29,905 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 20:14:30,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 20:14:30,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-18 20:14:30,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 20:14:30,124 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 20:14:30,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 20:14:30,195 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 20:14:30,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53500296] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 20:14:30,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [794887674] [2022-04-18 20:14:30,201 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 20:14:30,203 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-18 20:14:30,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-04-18 20:14:30,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870568645] [2022-04-18 20:14:30,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-18 20:14:30,204 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-18 20:14:30,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 20:14:30,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-18 20:14:30,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-04-18 20:14:30,206 INFO L87 Difference]: Start difference. First operand 1449 states and 3566 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 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 20:14:30,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 20:14:30,372 INFO L93 Difference]: Finished difference Result 3786 states and 9084 transitions. [2022-04-18 20:14:30,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 20:14:30,373 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 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 40 [2022-04-18 20:14:30,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 20:14:30,378 INFO L225 Difference]: With dead ends: 3786 [2022-04-18 20:14:30,378 INFO L226 Difference]: Without dead ends: 3786 [2022-04-18 20:14:30,379 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-04-18 20:14:30,382 INFO L913 BasicCegarLoop]: 39 mSDtfsCounter, 355 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-18 20:14:30,382 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [355 Valid, 154 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-18 20:14:30,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3786 states. [2022-04-18 20:14:30,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3786 to 3758. [2022-04-18 20:14:30,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3758 states, 3751 states have (on average 2.4153559050919755) internal successors, (9060), 3757 states have internal predecessors, (9060), 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 20:14:30,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3758 states to 3758 states and 9060 transitions. [2022-04-18 20:14:30,434 INFO L78 Accepts]: Start accepts. Automaton has 3758 states and 9060 transitions. Word has length 40 [2022-04-18 20:14:30,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 20:14:30,435 INFO L478 AbstractCegarLoop]: Abstraction has 3758 states and 9060 transitions. [2022-04-18 20:14:30,435 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 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 20:14:30,435 INFO L276 IsEmpty]: Start isEmpty. Operand 3758 states and 9060 transitions. [2022-04-18 20:14:30,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-04-18 20:14:30,437 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 20:14:30,437 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 20:14:30,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-18 20:14:30,655 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-04-18 20:14:30,656 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2022-04-18 20:14:30,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 20:14:30,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1349882808, now seen corresponding path program 1 times [2022-04-18 20:14:30,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 20:14:30,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314108393] [2022-04-18 20:14:30,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 20:14:30,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 20:14:30,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 20:14:30,684 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 20:14:30,685 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 20:14:30,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314108393] [2022-04-18 20:14:30,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314108393] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 20:14:30,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 20:14:30,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 20:14:30,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607739237] [2022-04-18 20:14:30,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 20:14:30,686 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 20:14:30,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 20:14:30,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 20:14:30,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 20:14:30,687 INFO L87 Difference]: Start difference. First operand 3758 states and 9060 transitions. Second operand has 3 states, 2 states have (on average 20.5) internal successors, (41), 3 states have internal predecessors, (41), 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 20:14:30,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 20:14:30,742 INFO L93 Difference]: Finished difference Result 3730 states and 8986 transitions. [2022-04-18 20:14:30,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 20:14:30,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 20.5) internal successors, (41), 3 states have internal predecessors, (41), 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 41 [2022-04-18 20:14:30,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 20:14:30,747 INFO L225 Difference]: With dead ends: 3730 [2022-04-18 20:14:30,748 INFO L226 Difference]: Without dead ends: 3730 [2022-04-18 20:14:30,748 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 20:14:30,749 INFO L913 BasicCegarLoop]: 39 mSDtfsCounter, 14 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 20:14:30,749 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 62 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 20:14:30,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3730 states. [2022-04-18 20:14:30,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3730 to 3730. [2022-04-18 20:14:30,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3730 states, 3726 states have (on average 2.411701556629093) internal successors, (8986), 3729 states have internal predecessors, (8986), 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 20:14:30,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3730 states to 3730 states and 8986 transitions. [2022-04-18 20:14:30,793 INFO L78 Accepts]: Start accepts. Automaton has 3730 states and 8986 transitions. Word has length 41 [2022-04-18 20:14:30,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 20:14:30,793 INFO L478 AbstractCegarLoop]: Abstraction has 3730 states and 8986 transitions. [2022-04-18 20:14:30,794 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 20.5) internal successors, (41), 3 states have internal predecessors, (41), 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 20:14:30,794 INFO L276 IsEmpty]: Start isEmpty. Operand 3730 states and 8986 transitions. [2022-04-18 20:14:30,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-04-18 20:14:30,797 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 20:14:30,797 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 20:14:30,797 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-04-18 20:14:30,797 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2022-04-18 20:14:30,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 20:14:30,798 INFO L85 PathProgramCache]: Analyzing trace with hash 488223172, now seen corresponding path program 1 times [2022-04-18 20:14:30,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 20:14:30,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107826831] [2022-04-18 20:14:30,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 20:14:30,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 20:14:30,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 20:14:30,904 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 20:14:30,904 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 20:14:30,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107826831] [2022-04-18 20:14:30,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107826831] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 20:14:30,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 20:14:30,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 20:14:30,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764574057] [2022-04-18 20:14:30,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 20:14:30,906 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 20:14:30,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 20:14:30,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 20:14:30,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 20:14:30,907 INFO L87 Difference]: Start difference. First operand 3730 states and 8986 transitions. Second operand has 6 states, 5 states have (on average 10.0) internal successors, (50), 6 states have internal predecessors, (50), 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 20:14:31,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 20:14:31,093 INFO L93 Difference]: Finished difference Result 3702 states and 8912 transitions. [2022-04-18 20:14:31,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 20:14:31,093 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 6 states have internal predecessors, (50), 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 50 [2022-04-18 20:14:31,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 20:14:31,098 INFO L225 Difference]: With dead ends: 3702 [2022-04-18 20:14:31,099 INFO L226 Difference]: Without dead ends: 3654 [2022-04-18 20:14:31,099 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 20:14:31,100 INFO L913 BasicCegarLoop]: 26 mSDtfsCounter, 20 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-18 20:14:31,100 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 38 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-18 20:14:31,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3654 states. [2022-04-18 20:14:31,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3654 to 3654. [2022-04-18 20:14:31,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3654 states, 3653 states have (on average 2.412811387900356) internal successors, (8814), 3653 states have internal predecessors, (8814), 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 20:14:31,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3654 states to 3654 states and 8814 transitions. [2022-04-18 20:14:31,160 INFO L78 Accepts]: Start accepts. Automaton has 3654 states and 8814 transitions. Word has length 50 [2022-04-18 20:14:31,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 20:14:31,161 INFO L478 AbstractCegarLoop]: Abstraction has 3654 states and 8814 transitions. [2022-04-18 20:14:31,161 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 6 states have internal predecessors, (50), 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 20:14:31,161 INFO L276 IsEmpty]: Start isEmpty. Operand 3654 states and 8814 transitions. [2022-04-18 20:14:31,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-04-18 20:14:31,165 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 20:14:31,165 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 20:14:31,165 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-04-18 20:14:31,166 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2022-04-18 20:14:31,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 20:14:31,166 INFO L85 PathProgramCache]: Analyzing trace with hash 95545430, now seen corresponding path program 1 times [2022-04-18 20:14:31,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 20:14:31,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274470273] [2022-04-18 20:14:31,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 20:14:31,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 20:14:31,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 20:14:31,244 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 20:14:31,244 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 20:14:31,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274470273] [2022-04-18 20:14:31,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274470273] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 20:14:31,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136733838] [2022-04-18 20:14:31,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 20:14:31,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 20:14:31,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 20:14:31,272 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 20:14:31,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-18 20:14:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 20:14:31,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-18 20:14:31,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 20:14:31,503 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 30 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-04-18 20:14:31,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 20:14:31,623 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 30 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-04-18 20:14:31,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136733838] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 20:14:31,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [507311725] [2022-04-18 20:14:31,624 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 20:14:31,624 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-18 20:14:31,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 13 [2022-04-18 20:14:31,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127463880] [2022-04-18 20:14:31,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-18 20:14:31,625 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-18 20:14:31,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 20:14:31,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-18 20:14:31,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-04-18 20:14:31,625 INFO L87 Difference]: Start difference. First operand 3654 states and 8814 transitions. Second operand has 13 states, 13 states have (on average 11.461538461538462) internal successors, (149), 13 states have internal predecessors, (149), 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 20:14:32,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 20:14:32,258 INFO L93 Difference]: Finished difference Result 8466 states and 20105 transitions. [2022-04-18 20:14:32,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-04-18 20:14:32,258 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 11.461538461538462) internal successors, (149), 13 states have internal predecessors, (149), 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 64 [2022-04-18 20:14:32,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 20:14:32,269 INFO L225 Difference]: With dead ends: 8466 [2022-04-18 20:14:32,269 INFO L226 Difference]: Without dead ends: 8466 [2022-04-18 20:14:32,270 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=597, Invalid=1383, Unknown=0, NotChecked=0, Total=1980 [2022-04-18 20:14:32,270 INFO L913 BasicCegarLoop]: 39 mSDtfsCounter, 1367 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1367 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-18 20:14:32,271 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1367 Valid, 412 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-18 20:14:32,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8466 states. [2022-04-18 20:14:32,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8466 to 7179. [2022-04-18 20:14:32,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7179 states, 7178 states have (on average 2.3999721370855394) internal successors, (17227), 7178 states have internal predecessors, (17227), 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 20:14:32,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7179 states to 7179 states and 17227 transitions. [2022-04-18 20:14:32,374 INFO L78 Accepts]: Start accepts. Automaton has 7179 states and 17227 transitions. Word has length 64 [2022-04-18 20:14:32,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 20:14:32,375 INFO L478 AbstractCegarLoop]: Abstraction has 7179 states and 17227 transitions. [2022-04-18 20:14:32,375 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.461538461538462) internal successors, (149), 13 states have internal predecessors, (149), 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 20:14:32,375 INFO L276 IsEmpty]: Start isEmpty. Operand 7179 states and 17227 transitions. [2022-04-18 20:14:32,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-04-18 20:14:32,383 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 20:14:32,383 INFO L499 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 20:14:32,399 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-04-18 20:14:32,599 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,3 /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 20:14:32,600 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2022-04-18 20:14:32,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 20:14:32,600 INFO L85 PathProgramCache]: Analyzing trace with hash 333215891, now seen corresponding path program 1 times [2022-04-18 20:14:32,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 20:14:32,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161277918] [2022-04-18 20:14:32,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 20:14:32,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 20:14:32,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 20:14:32,710 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-04-18 20:14:32,711 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 20:14:32,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161277918] [2022-04-18 20:14:32,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161277918] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 20:14:32,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128259423] [2022-04-18 20:14:32,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 20:14:32,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 20:14:32,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 20:14:32,713 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 20:14:32,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-18 20:14:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 20:14:32,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 6 conjunts are in the unsatisfiable core [2022-04-18 20:14:32,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 20:14:32,973 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-04-18 20:14:32,974 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 20:14:32,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128259423] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 20:14:32,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-18 20:14:32,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 6 [2022-04-18 20:14:32,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269969153] [2022-04-18 20:14:32,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 20:14:32,975 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 20:14:32,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 20:14:32,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 20:14:32,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-04-18 20:14:32,975 INFO L87 Difference]: Start difference. First operand 7179 states and 17227 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 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 20:14:33,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 20:14:33,156 INFO L93 Difference]: Finished difference Result 10264 states and 24297 transitions. [2022-04-18 20:14:33,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-18 20:14:33,156 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 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 95 [2022-04-18 20:14:33,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 20:14:33,169 INFO L225 Difference]: With dead ends: 10264 [2022-04-18 20:14:33,170 INFO L226 Difference]: Without dead ends: 10264 [2022-04-18 20:14:33,170 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-04-18 20:14:33,170 INFO L913 BasicCegarLoop]: 46 mSDtfsCounter, 137 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-18 20:14:33,171 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 176 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-18 20:14:33,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10264 states. [2022-04-18 20:14:33,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10264 to 8236. [2022-04-18 20:14:33,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8236 states, 8235 states have (on average 2.431451123254402) internal successors, (20023), 8235 states have internal predecessors, (20023), 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 20:14:33,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8236 states to 8236 states and 20023 transitions. [2022-04-18 20:14:33,295 INFO L78 Accepts]: Start accepts. Automaton has 8236 states and 20023 transitions. Word has length 95 [2022-04-18 20:14:33,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 20:14:33,295 INFO L478 AbstractCegarLoop]: Abstraction has 8236 states and 20023 transitions. [2022-04-18 20:14:33,296 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 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 20:14:33,296 INFO L276 IsEmpty]: Start isEmpty. Operand 8236 states and 20023 transitions. [2022-04-18 20:14:33,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-04-18 20:14:33,305 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 20:14:33,305 INFO L499 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 20:14:33,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-18 20:14:33,521 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-04-18 20:14:33,521 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2022-04-18 20:14:33,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 20:14:33,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1009062113, now seen corresponding path program 2 times [2022-04-18 20:14:33,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 20:14:33,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653331337] [2022-04-18 20:14:33,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 20:14:33,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 20:14:33,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 20:14:33,623 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 44 proven. 81 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-04-18 20:14:33,624 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 20:14:33,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653331337] [2022-04-18 20:14:33,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653331337] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 20:14:33,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823172912] [2022-04-18 20:14:33,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-18 20:14:33,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 20:14:33,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 20:14:33,625 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 20:14:33,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-18 20:14:33,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-04-18 20:14:33,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-18 20:14:33,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-18 20:14:33,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 20:14:33,927 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-04-18 20:14:33,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 20:14:33,947 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-04-18 20:14:33,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 20:14:33,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 20:14:33,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 20:14:33,969 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-04-18 20:14:33,970 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-04-18 20:14:33,985 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-04-18 20:14:33,985 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 20:14:33,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823172912] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 20:14:33,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-18 20:14:33,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 12 [2022-04-18 20:14:33,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340891403] [2022-04-18 20:14:33,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 20:14:33,986 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 20:14:33,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 20:14:33,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 20:14:33,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-04-18 20:14:33,986 INFO L87 Difference]: Start difference. First operand 8236 states and 20023 transitions. Second operand has 6 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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 20:14:34,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 20:14:34,142 INFO L93 Difference]: Finished difference Result 8203 states and 19953 transitions. [2022-04-18 20:14:34,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 20:14:34,143 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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 102 [2022-04-18 20:14:34,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 20:14:34,143 INFO L225 Difference]: With dead ends: 8203 [2022-04-18 20:14:34,143 INFO L226 Difference]: Without dead ends: 0 [2022-04-18 20:14:34,144 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-04-18 20:14:34,145 INFO L913 BasicCegarLoop]: 46 mSDtfsCounter, 97 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-18 20:14:34,145 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 72 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-18 20:14:34,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-18 20:14:34,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-18 20:14:34,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 20:14:34,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-18 20:14:34,145 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 102 [2022-04-18 20:14:34,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 20:14:34,146 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-18 20:14:34,146 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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 20:14:34,146 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-18 20:14:34,146 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-18 20:14:34,151 INFO L788 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (27 of 28 remaining) [2022-04-18 20:14:34,152 INFO L788 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (26 of 28 remaining) [2022-04-18 20:14:34,152 INFO L788 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 28 remaining) [2022-04-18 20:14:34,152 INFO L788 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 28 remaining) [2022-04-18 20:14:34,152 INFO L788 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONDATA_RACE (23 of 28 remaining) [2022-04-18 20:14:34,152 INFO L788 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONDATA_RACE (22 of 28 remaining) [2022-04-18 20:14:34,152 INFO L788 garLoopResultBuilder]: Registering result SAFE for location t1Err5ASSERT_VIOLATIONDATA_RACE (21 of 28 remaining) [2022-04-18 20:14:34,152 INFO L788 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONDATA_RACE (20 of 28 remaining) [2022-04-18 20:14:34,152 INFO L788 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONDATA_RACE (19 of 28 remaining) [2022-04-18 20:14:34,152 INFO L788 garLoopResultBuilder]: Registering result SAFE for location t1Err4ASSERT_VIOLATIONDATA_RACE (18 of 28 remaining) [2022-04-18 20:14:34,153 INFO L788 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONDATA_RACE (17 of 28 remaining) [2022-04-18 20:14:34,153 INFO L788 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONDATA_RACE (16 of 28 remaining) [2022-04-18 20:14:34,153 INFO L788 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONDATA_RACE (15 of 28 remaining) [2022-04-18 20:14:34,153 INFO L788 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONDATA_RACE (14 of 28 remaining) [2022-04-18 20:14:34,153 INFO L788 garLoopResultBuilder]: Registering result SAFE for location t2Err4ASSERT_VIOLATIONDATA_RACE (13 of 28 remaining) [2022-04-18 20:14:34,153 INFO L788 garLoopResultBuilder]: Registering result SAFE for location t2Err5ASSERT_VIOLATIONDATA_RACE (12 of 28 remaining) [2022-04-18 20:14:34,153 INFO L788 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONDATA_RACE (11 of 28 remaining) [2022-04-18 20:14:34,153 INFO L788 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONDATA_RACE (10 of 28 remaining) [2022-04-18 20:14:34,153 INFO L788 garLoopResultBuilder]: Registering result SAFE for location t1Err5ASSERT_VIOLATIONDATA_RACE (9 of 28 remaining) [2022-04-18 20:14:34,153 INFO L788 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONDATA_RACE (8 of 28 remaining) [2022-04-18 20:14:34,153 INFO L788 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONDATA_RACE (7 of 28 remaining) [2022-04-18 20:14:34,153 INFO L788 garLoopResultBuilder]: Registering result SAFE for location t1Err4ASSERT_VIOLATIONDATA_RACE (6 of 28 remaining) [2022-04-18 20:14:34,154 INFO L788 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONDATA_RACE (5 of 28 remaining) [2022-04-18 20:14:34,154 INFO L788 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONDATA_RACE (4 of 28 remaining) [2022-04-18 20:14:34,154 INFO L788 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONDATA_RACE (3 of 28 remaining) [2022-04-18 20:14:34,154 INFO L788 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONDATA_RACE (2 of 28 remaining) [2022-04-18 20:14:34,154 INFO L788 garLoopResultBuilder]: Registering result SAFE for location t2Err4ASSERT_VIOLATIONDATA_RACE (1 of 28 remaining) [2022-04-18 20:14:34,154 INFO L788 garLoopResultBuilder]: Registering result SAFE for location t2Err5ASSERT_VIOLATIONDATA_RACE (0 of 28 remaining) [2022-04-18 20:14:34,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-18 20:14:34,371 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 20:14:34,374 INFO L719 BasicCegarLoop]: Path program histogram: [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 20:14:34,377 INFO L227 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-04-18 20:14:34,377 INFO L177 ceAbstractionStarter]: Computing trace abstraction results [2022-04-18 20:14:34,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 08:14:34 BasicIcfg [2022-04-18 20:14:34,379 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-18 20:14:34,380 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-04-18 20:14:34,380 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-04-18 20:14:34,380 INFO L275 PluginConnector]: Witness Printer initialized [2022-04-18 20:14:34,380 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 08:14:11" (3/4) ... [2022-04-18 20:14:34,382 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-04-18 20:14:34,386 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2022-04-18 20:14:34,387 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2022-04-18 20:14:34,390 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-04-18 20:14:34,390 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-04-18 20:14:34,390 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-04-18 20:14:34,390 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-04-18 20:14:34,415 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/witness.graphml [2022-04-18 20:14:34,416 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-04-18 20:14:34,416 INFO L158 Benchmark]: Toolchain (without parser) took 24352.04ms. Allocated memory was 111.1MB in the beginning and 6.6GB in the end (delta: 6.5GB). Free memory was 90.1MB in the beginning and 3.8GB in the end (delta: -3.8GB). Peak memory consumption was 2.7GB. Max. memory is 16.1GB. [2022-04-18 20:14:34,417 INFO L158 Benchmark]: CDTParser took 0.60ms. Allocated memory is still 90.2MB. Free memory was 63.8MB in the beginning and 63.7MB in the end (delta: 46.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-04-18 20:14:34,417 INFO L158 Benchmark]: CACSL2BoogieTranslator took 422.20ms. Allocated memory is still 111.1MB. Free memory was 90.1MB in the beginning and 60.8MB in the end (delta: 29.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-04-18 20:14:34,417 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.33ms. Allocated memory is still 111.1MB. Free memory was 60.8MB in the beginning and 57.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-04-18 20:14:34,417 INFO L158 Benchmark]: Boogie Preprocessor took 22.23ms. Allocated memory is still 111.1MB. Free memory was 57.7MB in the beginning and 55.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-04-18 20:14:34,418 INFO L158 Benchmark]: RCFGBuilder took 570.39ms. Allocated memory is still 111.1MB. Free memory was 55.6MB in the beginning and 35.9MB in the end (delta: 19.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-04-18 20:14:34,418 INFO L158 Benchmark]: TraceAbstraction took 23252.27ms. Allocated memory was 111.1MB in the beginning and 6.6GB in the end (delta: 6.5GB). Free memory was 35.3MB in the beginning and 3.8GB in the end (delta: -3.8GB). Peak memory consumption was 2.7GB. Max. memory is 16.1GB. [2022-04-18 20:14:34,419 INFO L158 Benchmark]: Witness Printer took 35.77ms. Allocated memory is still 6.6GB. Free memory was 3.8GB in the beginning and 3.8GB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-04-18 20:14:34,424 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60ms. Allocated memory is still 90.2MB. Free memory was 63.8MB in the beginning and 63.7MB in the end (delta: 46.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 422.20ms. Allocated memory is still 111.1MB. Free memory was 90.1MB in the beginning and 60.8MB in the end (delta: 29.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.33ms. Allocated memory is still 111.1MB. Free memory was 60.8MB in the beginning and 57.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.23ms. Allocated memory is still 111.1MB. Free memory was 57.7MB in the beginning and 55.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 570.39ms. Allocated memory is still 111.1MB. Free memory was 55.6MB in the beginning and 35.9MB in the end (delta: 19.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 23252.27ms. Allocated memory was 111.1MB in the beginning and 6.6GB in the end (delta: 6.5GB). Free memory was 35.3MB in the beginning and 3.8GB in the end (delta: -3.8GB). Peak memory consumption was 2.7GB. Max. memory is 16.1GB. * Witness Printer took 35.77ms. Allocated memory is still 6.6GB. Free memory was 3.8GB in the beginning and 3.8GB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.2s, 242 PlacesBefore, 89 PlacesAfterwards, 245 TransitionsBefore, 88 TransitionsAfterwards, 20432 CoEnabledTransitionPairs, 7 FixpointIterations, 43 TrivialSequentialCompositions, 108 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 27 ConcurrentYvCompositions, 4 ChoiceCompositions, 182 TotalNumberOfCompositions, 69346 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 34238, positive: 33243, positive conditional: 0, positive unconditional: 33243, negative: 995, negative conditional: 0, negative unconditional: 995, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 15056, positive: 14841, positive conditional: 0, positive unconditional: 14841, negative: 215, negative conditional: 0, negative unconditional: 215, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 15056, positive: 14698, positive conditional: 0, positive unconditional: 14698, negative: 358, negative conditional: 0, negative unconditional: 358, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 358, positive: 143, positive conditional: 0, positive unconditional: 143, negative: 215, negative conditional: 0, negative unconditional: 215, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 387, positive: 163, positive conditional: 0, positive unconditional: 163, negative: 224, negative conditional: 0, negative unconditional: 224, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 34238, positive: 18402, positive conditional: 0, positive unconditional: 18402, negative: 780, negative conditional: 0, negative unconditional: 780, unknown: 15056, unknown conditional: 0, unknown unconditional: 15056] , Statistics on independence cache: Total cache size (in pairs): 2392, Positive cache size: 2271, Positive conditional cache size: 0, Positive unconditional cache size: 2271, Negative cache size: 121, Negative conditional cache size: 0, Negative unconditional cache size: 121 - 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 - PositiveResult [Line: 1025]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 1026]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 962]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 954]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 999]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 969]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 946]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 946]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 1010]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 954]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 950]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 950]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 954]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 984]: there are no data races For all program executions holds that there are no data races at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 402 locations, 28 error locations. Started 1 CEGAR loops. OverallTime: 23.1s, OverallIterations: 22, TraceHistogramMax: 5, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.1s, AutomataDifference: 8.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.4s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5425 SdHoareTripleChecker+Valid, 5.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5425 mSDsluCounter, 4443 SdHoareTripleChecker+Invalid, 4.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6854 mSDsCounter, 622 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9137 IncrementalHoareTripleChecker+Invalid, 9759 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 622 mSolverCounterUnsat, 1534 mSDtfsCounter, 9137 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 597 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19699occurred in iteration=12, InterpolantAutomatonStates: 160, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 6.2s AutomataMinimizationTime, 22 MinimizatonAttempts, 71166 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 961 NumberOfCodeBlocks, 871 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 1037 ConstructedInterpolants, 0 QuantifiedInterpolants, 4311 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1467 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 28 InterpolantComputations, 20 PerfectInterpolantSequences, 444/589 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-04-18 20:14:34,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE