./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/13_unverif.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version efd9311c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/TaipanReach.xml -i /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/13_unverif.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 ea403ebfe777a86c8f08ec54b02dc30e546c8fae743fed5fb0e88129df40ac76 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 19:06:49,558 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 19:06:49,560 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 19:06:49,578 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 19:06:49,578 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 19:06:49,579 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 19:06:49,580 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 19:06:49,581 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 19:06:49,582 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 19:06:49,583 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 19:06:49,584 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 19:06:49,584 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 19:06:49,585 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 19:06:49,585 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 19:06:49,586 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 19:06:49,587 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 19:06:49,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 19:06:49,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 19:06:49,589 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 19:06:49,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 19:06:49,591 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 19:06:49,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 19:06:49,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 19:06:49,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 19:06:49,594 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 19:06:49,596 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 19:06:49,597 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 19:06:49,597 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 19:06:49,597 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 19:06:49,598 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 19:06:49,598 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 19:06:49,599 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 19:06:49,599 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 19:06:49,600 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 19:06:49,600 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 19:06:49,601 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 19:06:49,601 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 19:06:49,602 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 19:06:49,602 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 19:06:49,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 19:06:49,603 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 19:06:49,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 19:06:49,604 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-04-18 19:06:49,625 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 19:06:49,626 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 19:06:49,626 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 19:06:49,626 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 19:06:49,627 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 19:06:49,627 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 19:06:49,627 INFO L138 SettingsManager]: * User list type=DISABLED [2022-04-18 19:06:49,627 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-04-18 19:06:49,627 INFO L138 SettingsManager]: * Explicit value domain=true [2022-04-18 19:06:49,628 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-04-18 19:06:49,628 INFO L138 SettingsManager]: * Octagon Domain=false [2022-04-18 19:06:49,628 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-04-18 19:06:49,628 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-04-18 19:06:49,629 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-04-18 19:06:49,629 INFO L138 SettingsManager]: * Interval Domain=false [2022-04-18 19:06:49,629 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-04-18 19:06:49,629 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-04-18 19:06:49,629 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-04-18 19:06:49,630 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 19:06:49,630 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 19:06:49,631 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 19:06:49,631 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 19:06:49,631 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 19:06:49,631 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 19:06:49,631 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 19:06:49,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 19:06:49,632 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 19:06:49,632 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 19:06:49,632 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 19:06:49,632 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 19:06:49,632 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 19:06:49,632 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 19:06:49,633 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 19:06:49,634 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 19:06:49,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 19:06:49,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 19:06:49,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 19:06:49,634 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 19:06:49,634 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-04-18 19:06:49,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 19:06:49,635 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 19:06:49,635 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-18 19:06:49,635 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-18 19:06:49,635 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea403ebfe777a86c8f08ec54b02dc30e546c8fae743fed5fb0e88129df40ac76 [2022-04-18 19:06:49,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 19:06:49,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 19:06:49,848 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 19:06:49,848 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 19:06:49,849 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 19:06:49,850 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/13_unverif.i [2022-04-18 19:06:49,899 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b3bd604da/bdedf81f003b47d6a73ebd89a56957a4/FLAGa44e14809 [2022-04-18 19:06:50,237 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 19:06:50,237 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/13_unverif.i [2022-04-18 19:06:50,252 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b3bd604da/bdedf81f003b47d6a73ebd89a56957a4/FLAGa44e14809 [2022-04-18 19:06:50,632 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b3bd604da/bdedf81f003b47d6a73ebd89a56957a4 [2022-04-18 19:06:50,635 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 19:06:50,636 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 19:06:50,638 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 19:06:50,638 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 19:06:50,640 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 19:06:50,641 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:06:50" (1/1) ... [2022-04-18 19:06:50,642 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20d3af03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:06:50, skipping insertion in model container [2022-04-18 19:06:50,643 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:06:50" (1/1) ... [2022-04-18 19:06:50,647 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 19:06:50,682 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 19:06:50,898 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/13_unverif.i[30213,30226] [2022-04-18 19:06:50,902 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 19:06:50,907 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 19:06:50,932 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/13_unverif.i[30213,30226] [2022-04-18 19:06:50,934 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 19:06:50,956 INFO L208 MainTranslator]: Completed translation [2022-04-18 19:06:50,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:06:50 WrapperNode [2022-04-18 19:06:50,957 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 19:06:50,958 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 19:06:50,958 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 19:06:50,958 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 19:06:50,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:06:50" (1/1) ... [2022-04-18 19:06:50,972 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:06:50" (1/1) ... [2022-04-18 19:06:50,995 INFO L137 Inliner]: procedures = 168, calls = 12, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 62 [2022-04-18 19:06:50,996 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 19:06:50,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 19:06:50,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 19:06:50,998 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 19:06:51,003 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:06:50" (1/1) ... [2022-04-18 19:06:51,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:06:50" (1/1) ... [2022-04-18 19:06:51,009 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:06:50" (1/1) ... [2022-04-18 19:06:51,009 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:06:50" (1/1) ... [2022-04-18 19:06:51,012 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:06:50" (1/1) ... [2022-04-18 19:06:51,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:06:50" (1/1) ... [2022-04-18 19:06:51,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:06:50" (1/1) ... [2022-04-18 19:06:51,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 19:06:51,017 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 19:06:51,018 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 19:06:51,018 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 19:06:51,018 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:06:50" (1/1) ... [2022-04-18 19:06:51,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 19:06:51,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 19:06:51,058 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-18 19:06:51,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-18 19:06:51,097 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-04-18 19:06:51,097 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-04-18 19:06:51,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 19:06:51,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 19:06:51,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 19:06:51,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 19:06:51,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 19:06:51,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 19:06:51,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 19:06:51,099 WARN L208 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-04-18 19:06:51,228 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 19:06:51,229 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 19:06:51,381 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 19:06:51,406 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 19:06:51,407 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-18 19:06:51,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:06:51 BoogieIcfgContainer [2022-04-18 19:06:51,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 19:06:51,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 19:06:51,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 19:06:51,412 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 19:06:51,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:06:50" (1/3) ... [2022-04-18 19:06:51,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16b140f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:06:51, skipping insertion in model container [2022-04-18 19:06:51,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:06:50" (2/3) ... [2022-04-18 19:06:51,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16b140f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:06:51, skipping insertion in model container [2022-04-18 19:06:51,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:06:51" (3/3) ... [2022-04-18 19:06:51,414 INFO L111 eAbstractionObserver]: Analyzing ICFG 13_unverif.i [2022-04-18 19:06:51,418 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 19:06:51,418 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 19:06:51,418 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2022-04-18 19:06:51,418 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 19:06:51,451 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 19:06:51,482 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 19:06:51,489 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-18 19:06:51,490 INFO L341 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-04-18 19:06:51,505 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 19:06:51,518 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 60 transitions, 125 flow [2022-04-18 19:06:51,523 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 60 places, 60 transitions, 125 flow [2022-04-18 19:06:51,524 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 60 places, 60 transitions, 125 flow [2022-04-18 19:06:51,556 INFO L129 PetriNetUnfolder]: 4/71 cut-off events. [2022-04-18 19:06:51,558 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 19:06:51,562 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 71 events. 4/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 105 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 43. Up to 4 conditions per place. [2022-04-18 19:06:51,564 INFO L116 LiptonReduction]: Number of co-enabled transitions 840 [2022-04-18 19:06:52,703 INFO L131 LiptonReduction]: Checked pairs total: 741 [2022-04-18 19:06:52,703 INFO L133 LiptonReduction]: Total number of compositions: 63 [2022-04-18 19:06:52,709 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 16 transitions, 37 flow [2022-04-18 19:06:52,720 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 52 states, 37 states have (on average 2.4594594594594597) internal successors, (91), 51 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:06:52,721 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 37 states have (on average 2.4594594594594597) internal successors, (91), 51 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:06:52,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-04-18 19:06:52,725 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:06:52,725 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2022-04-18 19:06:52,726 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2022-04-18 19:06:52,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:06:52,729 INFO L85 PathProgramCache]: Analyzing trace with hash 9399797, now seen corresponding path program 1 times [2022-04-18 19:06:52,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:06:52,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675244469] [2022-04-18 19:06:52,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:06:52,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:06:52,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:06:52,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 19:06:52,831 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:06:52,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675244469] [2022-04-18 19:06:52,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675244469] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:06:52,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:06:52,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-04-18 19:06:52,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582238827] [2022-04-18 19:06:52,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:06:52,836 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 19:06:52,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:06:52,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 19:06:52,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 19:06:52,853 INFO L87 Difference]: Start difference. First operand has 52 states, 37 states have (on average 2.4594594594594597) internal successors, (91), 51 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:06:52,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:06:52,873 INFO L93 Difference]: Finished difference Result 19 states and 31 transitions. [2022-04-18 19:06:52,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 19:06:52,875 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-04-18 19:06:52,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:06:52,879 INFO L225 Difference]: With dead ends: 19 [2022-04-18 19:06:52,880 INFO L226 Difference]: Without dead ends: 19 [2022-04-18 19:06:52,880 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 19:06:52,882 INFO L913 BasicCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 19:06:52,883 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 19:06:52,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-04-18 19:06:52,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-04-18 19:06:52,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:06:52,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 31 transitions. [2022-04-18 19:06:52,903 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 31 transitions. Word has length 4 [2022-04-18 19:06:52,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:06:52,903 INFO L478 AbstractCegarLoop]: Abstraction has 19 states and 31 transitions. [2022-04-18 19:06:52,903 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:06:52,903 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 31 transitions. [2022-04-18 19:06:52,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-04-18 19:06:52,904 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:06:52,904 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-04-18 19:06:52,904 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 19:06:52,904 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err4ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2022-04-18 19:06:52,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:06:52,905 INFO L85 PathProgramCache]: Analyzing trace with hash 291394557, now seen corresponding path program 1 times [2022-04-18 19:06:52,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:06:52,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178710285] [2022-04-18 19:06:52,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:06:52,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:06:52,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:06:52,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 19:06:52,941 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:06:52,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178710285] [2022-04-18 19:06:52,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178710285] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:06:52,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:06:52,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 19:06:52,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126556045] [2022-04-18 19:06:52,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:06:52,943 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 19:06:52,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:06:52,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 19:06:52,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:06:52,944 INFO L87 Difference]: Start difference. First operand 19 states and 31 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:06:52,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:06:52,956 INFO L93 Difference]: Finished difference Result 15 states and 24 transitions. [2022-04-18 19:06:52,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 19:06:52,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-04-18 19:06:52,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:06:52,957 INFO L225 Difference]: With dead ends: 15 [2022-04-18 19:06:52,957 INFO L226 Difference]: Without dead ends: 15 [2022-04-18 19:06:52,958 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:06:52,959 INFO L913 BasicCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 19:06:52,959 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 3 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 19:06:52,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-04-18 19:06:52,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-04-18 19:06:52,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:06:52,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 24 transitions. [2022-04-18 19:06:52,961 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 24 transitions. Word has length 5 [2022-04-18 19:06:52,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:06:52,962 INFO L478 AbstractCegarLoop]: Abstraction has 15 states and 24 transitions. [2022-04-18 19:06:52,962 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:06:52,962 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 24 transitions. [2022-04-18 19:06:52,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-04-18 19:06:52,962 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:06:52,962 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-04-18 19:06:52,963 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 19:06:52,963 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2022-04-18 19:06:52,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:06:52,963 INFO L85 PathProgramCache]: Analyzing trace with hash 443260249, now seen corresponding path program 1 times [2022-04-18 19:06:52,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:06:52,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093026229] [2022-04-18 19:06:52,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:06:52,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:06:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:06:52,991 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 19:06:52,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:06:53,009 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-04-18 19:06:53,009 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 19:06:53,010 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2022-04-18 19:06:53,011 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2022-04-18 19:06:53,011 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2022-04-18 19:06:53,011 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2022-04-18 19:06:53,012 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2022-04-18 19:06:53,012 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2022-04-18 19:06:53,012 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2022-04-18 19:06:53,012 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2022-04-18 19:06:53,012 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2022-04-18 19:06:53,012 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2022-04-18 19:06:53,013 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2022-04-18 19:06:53,013 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2022-04-18 19:06:53,013 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2022-04-18 19:06:53,013 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2022-04-18 19:06:53,013 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2022-04-18 19:06:53,013 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 19:06:53,015 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-04-18 19:06:53,016 WARN L232 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 19:06:53,016 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-04-18 19:06:53,027 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 19:06:53,028 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 19:06:53,029 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-18 19:06:53,029 INFO L341 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-04-18 19:06:53,030 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 19:06:53,030 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 91 transitions, 194 flow [2022-04-18 19:06:53,031 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 91 transitions, 194 flow [2022-04-18 19:06:53,031 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 91 places, 91 transitions, 194 flow [2022-04-18 19:06:53,044 INFO L129 PetriNetUnfolder]: 7/115 cut-off events. [2022-04-18 19:06:53,044 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-04-18 19:06:53,045 INFO L84 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 115 events. 7/115 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 255 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 73. Up to 6 conditions per place. [2022-04-18 19:06:53,047 INFO L116 LiptonReduction]: Number of co-enabled transitions 3540 [2022-04-18 19:06:53,964 INFO L131 LiptonReduction]: Checked pairs total: 20833 [2022-04-18 19:06:53,964 INFO L133 LiptonReduction]: Total number of compositions: 65 [2022-04-18 19:06:53,965 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 50 transitions, 112 flow [2022-04-18 19:06:54,022 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2501 states, 2367 states have (on average 3.0599915504858473) internal successors, (7243), 2500 states have internal predecessors, (7243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:06:54,027 INFO L276 IsEmpty]: Start isEmpty. Operand has 2501 states, 2367 states have (on average 3.0599915504858473) internal successors, (7243), 2500 states have internal predecessors, (7243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:06:54,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-04-18 19:06:54,028 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:06:54,028 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2022-04-18 19:06:54,028 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2022-04-18 19:06:54,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:06:54,029 INFO L85 PathProgramCache]: Analyzing trace with hash 15044838, now seen corresponding path program 1 times [2022-04-18 19:06:54,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:06:54,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540339979] [2022-04-18 19:06:54,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:06:54,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:06:54,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:06:54,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 19:06:54,048 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:06:54,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540339979] [2022-04-18 19:06:54,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540339979] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:06:54,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:06:54,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-04-18 19:06:54,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436259446] [2022-04-18 19:06:54,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:06:54,050 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 19:06:54,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:06:54,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 19:06:54,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 19:06:54,055 INFO L87 Difference]: Start difference. First operand has 2501 states, 2367 states have (on average 3.0599915504858473) internal successors, (7243), 2500 states have internal predecessors, (7243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:06:54,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:06:54,096 INFO L93 Difference]: Finished difference Result 1516 states and 4185 transitions. [2022-04-18 19:06:54,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 19:06:54,096 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-04-18 19:06:54,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:06:54,114 INFO L225 Difference]: With dead ends: 1516 [2022-04-18 19:06:54,114 INFO L226 Difference]: Without dead ends: 1516 [2022-04-18 19:06:54,115 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 19:06:54,115 INFO L913 BasicCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 19:06:54,116 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 19:06:54,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2022-04-18 19:06:54,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 1516. [2022-04-18 19:06:54,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1516 states, 1491 states have (on average 2.806841046277666) internal successors, (4185), 1515 states have internal predecessors, (4185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:06:54,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 4185 transitions. [2022-04-18 19:06:54,205 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 4185 transitions. Word has length 4 [2022-04-18 19:06:54,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:06:54,205 INFO L478 AbstractCegarLoop]: Abstraction has 1516 states and 4185 transitions. [2022-04-18 19:06:54,205 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:06:54,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 4185 transitions. [2022-04-18 19:06:54,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-04-18 19:06:54,206 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:06:54,206 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-04-18 19:06:54,206 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 19:06:54,207 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2022-04-18 19:06:54,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:06:54,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1573202346, now seen corresponding path program 1 times [2022-04-18 19:06:54,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:06:54,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450682352] [2022-04-18 19:06:54,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:06:54,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:06:54,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:06:54,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 19:06:54,228 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:06:54,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450682352] [2022-04-18 19:06:54,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450682352] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:06:54,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:06:54,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 19:06:54,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942713850] [2022-04-18 19:06:54,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:06:54,232 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 19:06:54,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:06:54,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 19:06:54,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:06:54,233 INFO L87 Difference]: Start difference. First operand 1516 states and 4185 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:06:54,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:06:54,277 INFO L93 Difference]: Finished difference Result 1637 states and 4387 transitions. [2022-04-18 19:06:54,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 19:06:54,278 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-04-18 19:06:54,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:06:54,285 INFO L225 Difference]: With dead ends: 1637 [2022-04-18 19:06:54,286 INFO L226 Difference]: Without dead ends: 1637 [2022-04-18 19:06:54,286 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:06:54,287 INFO L913 BasicCegarLoop]: 30 mSDtfsCounter, 33 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 19:06:54,287 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 51 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 19:06:54,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2022-04-18 19:06:54,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1507. [2022-04-18 19:06:54,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1507 states, 1483 states have (on average 2.712744436952124) internal successors, (4023), 1506 states have internal predecessors, (4023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:06:54,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 4023 transitions. [2022-04-18 19:06:54,319 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 4023 transitions. Word has length 6 [2022-04-18 19:06:54,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:06:54,319 INFO L478 AbstractCegarLoop]: Abstraction has 1507 states and 4023 transitions. [2022-04-18 19:06:54,319 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:06:54,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 4023 transitions. [2022-04-18 19:06:54,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-04-18 19:06:54,320 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:06:54,320 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 19:06:54,320 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-18 19:06:54,320 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err4ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2022-04-18 19:06:54,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:06:54,321 INFO L85 PathProgramCache]: Analyzing trace with hash 588361938, now seen corresponding path program 1 times [2022-04-18 19:06:54,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:06:54,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538840674] [2022-04-18 19:06:54,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:06:54,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:06:54,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:06:54,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 19:06:54,361 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:06:54,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538840674] [2022-04-18 19:06:54,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538840674] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:06:54,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:06:54,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 19:06:54,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141649400] [2022-04-18 19:06:54,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:06:54,362 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 19:06:54,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:06:54,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 19:06:54,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:06:54,363 INFO L87 Difference]: Start difference. First operand 1507 states and 4023 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:06:54,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:06:54,406 INFO L93 Difference]: Finished difference Result 1608 states and 4199 transitions. [2022-04-18 19:06:54,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 19:06:54,406 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-04-18 19:06:54,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:06:54,412 INFO L225 Difference]: With dead ends: 1608 [2022-04-18 19:06:54,413 INFO L226 Difference]: Without dead ends: 1608 [2022-04-18 19:06:54,413 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:06:54,414 INFO L913 BasicCegarLoop]: 34 mSDtfsCounter, 27 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 19:06:54,414 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 48 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 19:06:54,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2022-04-18 19:06:54,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 1419. [2022-04-18 19:06:54,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1419 states, 1407 states have (on average 2.617626154939588) internal successors, (3683), 1418 states have internal predecessors, (3683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:06:54,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 3683 transitions. [2022-04-18 19:06:54,443 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 3683 transitions. Word has length 9 [2022-04-18 19:06:54,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:06:54,443 INFO L478 AbstractCegarLoop]: Abstraction has 1419 states and 3683 transitions. [2022-04-18 19:06:54,443 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:06:54,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 3683 transitions. [2022-04-18 19:06:54,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-18 19:06:54,444 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:06:54,444 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 19:06:54,444 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-18 19:06:54,445 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2022-04-18 19:06:54,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:06:54,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1901591894, now seen corresponding path program 1 times [2022-04-18 19:06:54,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:06:54,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982999009] [2022-04-18 19:06:54,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:06:54,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:06:54,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:06:54,459 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 19:06:54,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:06:54,471 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-04-18 19:06:54,471 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 19:06:54,472 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (21 of 22 remaining) [2022-04-18 19:06:54,472 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2022-04-18 19:06:54,472 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2022-04-18 19:06:54,472 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2022-04-18 19:06:54,472 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2022-04-18 19:06:54,472 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2022-04-18 19:06:54,472 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2022-04-18 19:06:54,473 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2022-04-18 19:06:54,473 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 22 remaining) [2022-04-18 19:06:54,473 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2022-04-18 19:06:54,473 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2022-04-18 19:06:54,473 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2022-04-18 19:06:54,473 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2022-04-18 19:06:54,473 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2022-04-18 19:06:54,474 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2022-04-18 19:06:54,474 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2022-04-18 19:06:54,474 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2022-04-18 19:06:54,474 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2022-04-18 19:06:54,474 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2022-04-18 19:06:54,474 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2022-04-18 19:06:54,474 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2022-04-18 19:06:54,475 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2022-04-18 19:06:54,475 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-18 19:06:54,475 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-04-18 19:06:54,478 INFO L227 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2022-04-18 19:06:54,478 INFO L177 ceAbstractionStarter]: Computing trace abstraction results [2022-04-18 19:06:54,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:06:54 BasicIcfg [2022-04-18 19:06:54,496 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-18 19:06:54,497 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-04-18 19:06:54,497 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-04-18 19:06:54,497 INFO L275 PluginConnector]: Witness Printer initialized [2022-04-18 19:06:54,497 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:06:51" (3/4) ... [2022-04-18 19:06:54,499 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-04-18 19:06:54,499 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-04-18 19:06:54,500 INFO L158 Benchmark]: Toolchain (without parser) took 3863.36ms. Allocated memory was 92.3MB in the beginning and 157.3MB in the end (delta: 65.0MB). Free memory was 58.9MB in the beginning and 47.6MB in the end (delta: 11.3MB). Peak memory consumption was 75.4MB. Max. memory is 16.1GB. [2022-04-18 19:06:54,500 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 92.3MB. Free memory was 45.2MB in the beginning and 45.1MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-04-18 19:06:54,500 INFO L158 Benchmark]: CACSL2BoogieTranslator took 320.04ms. Allocated memory was 92.3MB in the beginning and 119.5MB in the end (delta: 27.3MB). Free memory was 58.7MB in the beginning and 85.9MB in the end (delta: -27.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-04-18 19:06:54,500 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.18ms. Allocated memory is still 119.5MB. Free memory was 85.9MB in the beginning and 83.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-04-18 19:06:54,501 INFO L158 Benchmark]: Boogie Preprocessor took 20.14ms. Allocated memory is still 119.5MB. Free memory was 83.8MB in the beginning and 82.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-04-18 19:06:54,501 INFO L158 Benchmark]: RCFGBuilder took 391.04ms. Allocated memory is still 119.5MB. Free memory was 82.7MB in the beginning and 69.6MB in the end (delta: 13.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-04-18 19:06:54,501 INFO L158 Benchmark]: TraceAbstraction took 3086.67ms. Allocated memory was 119.5MB in the beginning and 157.3MB in the end (delta: 37.7MB). Free memory was 69.1MB in the beginning and 47.6MB in the end (delta: 21.5MB). Peak memory consumption was 61.4MB. Max. memory is 16.1GB. [2022-04-18 19:06:54,501 INFO L158 Benchmark]: Witness Printer took 2.74ms. Allocated memory is still 157.3MB. Free memory is still 47.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-04-18 19:06:54,502 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 92.3MB. Free memory was 45.2MB in the beginning and 45.1MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 320.04ms. Allocated memory was 92.3MB in the beginning and 119.5MB in the end (delta: 27.3MB). Free memory was 58.7MB in the beginning and 85.9MB in the end (delta: -27.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.18ms. Allocated memory is still 119.5MB. Free memory was 85.9MB in the beginning and 83.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.14ms. Allocated memory is still 119.5MB. Free memory was 83.8MB in the beginning and 82.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 391.04ms. Allocated memory is still 119.5MB. Free memory was 82.7MB in the beginning and 69.6MB in the end (delta: 13.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 3086.67ms. Allocated memory was 119.5MB in the beginning and 157.3MB in the end (delta: 37.7MB). Free memory was 69.1MB in the beginning and 47.6MB in the end (delta: 21.5MB). Peak memory consumption was 61.4MB. Max. memory is 16.1GB. * Witness Printer took 2.74ms. Allocated memory is still 157.3MB. Free memory is still 47.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.2s, 60 PlacesBefore, 18 PlacesAfterwards, 60 TransitionsBefore, 16 TransitionsAfterwards, 840 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 63 TotalNumberOfCompositions, 741 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 741, positive: 741, positive conditional: 0, positive unconditional: 741, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 504, positive: 504, positive conditional: 0, positive unconditional: 504, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 504, positive: 504, positive conditional: 0, positive unconditional: 504, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 741, positive: 237, positive conditional: 0, positive unconditional: 237, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 504, unknown conditional: 0, unknown unconditional: 504] , Statistics on independence cache: Total cache size (in pairs): 10, Positive cache size: 10, Positive conditional cache size: 0, Positive unconditional cache size: 10, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.9s, 91 PlacesBefore, 51 PlacesAfterwards, 91 TransitionsBefore, 50 TransitionsAfterwards, 3540 CoEnabledTransitionPairs, 9 FixpointIterations, 14 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 65 TotalNumberOfCompositions, 20833 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9921, positive: 9325, positive conditional: 0, positive unconditional: 9325, negative: 596, negative conditional: 0, negative unconditional: 596, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2394, positive: 2309, positive conditional: 0, positive unconditional: 2309, negative: 85, negative conditional: 0, negative unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2394, positive: 2159, positive conditional: 0, positive unconditional: 2159, negative: 235, negative conditional: 0, negative unconditional: 235, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 235, positive: 150, positive conditional: 0, positive unconditional: 150, negative: 85, negative conditional: 0, negative unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 147, positive: 68, positive conditional: 0, positive unconditional: 68, negative: 79, negative conditional: 0, negative unconditional: 79, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 9921, positive: 7016, positive conditional: 0, positive unconditional: 7016, negative: 511, negative conditional: 0, negative unconditional: 511, unknown: 2394, unknown conditional: 0, unknown unconditional: 2394] , Statistics on independence cache: Total cache size (in pairs): 601, Positive cache size: 556, Positive conditional cache size: 0, Positive unconditional cache size: 556, Negative cache size: 45, Negative conditional cache size: 0, Negative unconditional cache size: 45 - 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 - DataRaceFoundResult [Line: 698]: Data race detected Data race detected The following path leads to a data race: [L688] 0 unsigned int r = 0; [L689] 0 unsigned int s = 0; [L707] 0 pthread_t t; VAL [r=0, s=0, t={3:0}] [L708] COND TRUE 0 1 [L709] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [pthread_create(&t, 0, thr1, 0)=-2, r=0, s=0, t={3:0}] [L696] 1 unsigned int l = 0; [L697] CALL 1 __VERIFIER_atomic_inc_r() [L692] EXPR 1 r!=-1 [L692] CALL 1 assume_abort_if_not(r!=-1) [L3] COND FALSE 1 !(!cond) [L692] RET 1 assume_abort_if_not(r!=-1) [L693] EXPR 1 r + 1 [L693] 1 r = r + 1 [L697] RET 1 __VERIFIER_atomic_inc_r() [L698] 1 r == 1 VAL [arg={0:0}, arg={0:0}, l=0, r=1, s=0] [L708] COND TRUE 0 1 [L709] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [pthread_create(&t, 0, thr1, 0)=-1, r=1, s=0, t={3:0}] [L696] 2 unsigned int l = 0; [L697] CALL 2 __VERIFIER_atomic_inc_r() [L692] EXPR 2 r!=-1 [L692] CALL 2 assume_abort_if_not(r!=-1) [L3] COND FALSE 2 !(!cond) [L692] RET 2 assume_abort_if_not(r!=-1) [L693] EXPR 2 r + 1 [L693] 2 r = r + 1 [L697] RET 2 __VERIFIER_atomic_inc_r() [L698] 1 r == 1 VAL [arg={0:0}, arg={0:0}, l=0, r=2, s=0] Now there is a data race on ~r~0 between C: r = r + 1 [693] and C: r == 1 [698] - UnprovableResult [Line: 692]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 701]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 709]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 87 locations, 15 error locations. Started 1 CEGAR loops. OverallTime: 1.5s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.2s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3 mSDsluCounter, 5 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 21 IncrementalHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 4 mSDtfsCounter, 21 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 116 locations, 22 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 60 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 60 mSDsluCounter, 126 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 56 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 101 IncrementalHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 91 mSDtfsCounter, 101 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2501occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 319 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 20 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-04-18 19:06:54,543 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE