./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-1.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-nondet/nondet-loop-bound-1.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 cdf629ba70521b99830442583c87012a34d164ca28f01f7e59d76ae2f1e525ff --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 19:21:19,973 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 19:21:19,975 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 19:21:20,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 19:21:20,011 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 19:21:20,013 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 19:21:20,014 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 19:21:20,016 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 19:21:20,017 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 19:21:20,021 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 19:21:20,021 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 19:21:20,023 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 19:21:20,023 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 19:21:20,025 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 19:21:20,025 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 19:21:20,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 19:21:20,028 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 19:21:20,029 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 19:21:20,030 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 19:21:20,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 19:21:20,036 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 19:21:20,037 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 19:21:20,037 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 19:21:20,038 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 19:21:20,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 19:21:20,043 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 19:21:20,044 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 19:21:20,044 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 19:21:20,045 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 19:21:20,045 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 19:21:20,046 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 19:21:20,046 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 19:21:20,047 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 19:21:20,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 19:21:20,048 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 19:21:20,049 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 19:21:20,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 19:21:20,049 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 19:21:20,049 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 19:21:20,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 19:21:20,050 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 19:21:20,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 19:21:20,052 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-04-18 19:21:20,075 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 19:21:20,075 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 19:21:20,075 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 19:21:20,075 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 19:21:20,076 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 19:21:20,076 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 19:21:20,076 INFO L138 SettingsManager]: * User list type=DISABLED [2022-04-18 19:21:20,076 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-04-18 19:21:20,077 INFO L138 SettingsManager]: * Explicit value domain=true [2022-04-18 19:21:20,077 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-04-18 19:21:20,078 INFO L138 SettingsManager]: * Octagon Domain=false [2022-04-18 19:21:20,078 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-04-18 19:21:20,078 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-04-18 19:21:20,078 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-04-18 19:21:20,078 INFO L138 SettingsManager]: * Interval Domain=false [2022-04-18 19:21:20,078 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-04-18 19:21:20,078 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-04-18 19:21:20,079 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-04-18 19:21:20,080 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 19:21:20,080 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 19:21:20,080 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 19:21:20,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 19:21:20,081 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 19:21:20,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 19:21:20,081 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 19:21:20,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 19:21:20,081 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 19:21:20,081 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 19:21:20,082 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 19:21:20,082 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 19:21:20,082 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 19:21:20,082 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 19:21:20,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 19:21:20,083 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 19:21:20,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 19:21:20,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 19:21:20,083 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 19:21:20,083 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 19:21:20,083 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-04-18 19:21:20,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 19:21:20,084 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 19:21:20,084 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-18 19:21:20,084 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-18 19:21:20,084 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cdf629ba70521b99830442583c87012a34d164ca28f01f7e59d76ae2f1e525ff [2022-04-18 19:21:20,234 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 19:21:20,247 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 19:21:20,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 19:21:20,249 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 19:21:20,250 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 19:21:20,251 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-1.i [2022-04-18 19:21:20,316 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/441d3f9aa/83c9548c3a7f46b7ba64e0a81185e4af/FLAG3276d0413 [2022-04-18 19:21:20,638 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 19:21:20,639 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-1.i [2022-04-18 19:21:20,660 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/441d3f9aa/83c9548c3a7f46b7ba64e0a81185e4af/FLAG3276d0413 [2022-04-18 19:21:21,039 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/441d3f9aa/83c9548c3a7f46b7ba64e0a81185e4af [2022-04-18 19:21:21,041 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 19:21:21,042 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 19:21:21,047 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 19:21:21,048 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 19:21:21,057 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 19:21:21,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:21:21" (1/1) ... [2022-04-18 19:21:21,059 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16d8b184 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:21, skipping insertion in model container [2022-04-18 19:21:21,059 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:21:21" (1/1) ... [2022-04-18 19:21:21,070 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 19:21:21,113 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 19:21:21,478 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-nondet/nondet-loop-bound-1.i[30035,30048] [2022-04-18 19:21:21,508 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 19:21:21,514 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 19:21:21,564 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-nondet/nondet-loop-bound-1.i[30035,30048] [2022-04-18 19:21:21,576 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 19:21:21,614 INFO L208 MainTranslator]: Completed translation [2022-04-18 19:21:21,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:21 WrapperNode [2022-04-18 19:21:21,628 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 19:21:21,629 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 19:21:21,629 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 19:21:21,629 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 19:21:21,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:21" (1/1) ... [2022-04-18 19:21:21,657 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:21" (1/1) ... [2022-04-18 19:21:21,692 INFO L137 Inliner]: procedures = 170, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 82 [2022-04-18 19:21:21,693 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 19:21:21,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 19:21:21,694 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 19:21:21,694 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 19:21:21,700 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:21" (1/1) ... [2022-04-18 19:21:21,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:21" (1/1) ... [2022-04-18 19:21:21,716 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:21" (1/1) ... [2022-04-18 19:21:21,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:21" (1/1) ... [2022-04-18 19:21:21,719 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:21" (1/1) ... [2022-04-18 19:21:21,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:21" (1/1) ... [2022-04-18 19:21:21,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:21" (1/1) ... [2022-04-18 19:21:21,745 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 19:21:21,746 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 19:21:21,746 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 19:21:21,746 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 19:21:21,752 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:21" (1/1) ... [2022-04-18 19:21:21,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 19:21:21,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 19:21:21,782 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 19:21:21,834 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 19:21:21,873 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-04-18 19:21:21,873 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-04-18 19:21:21,873 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-04-18 19:21:21,874 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-04-18 19:21:21,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 19:21:21,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 19:21:21,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 19:21:21,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 19:21:21,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 19:21:21,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 19:21:21,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 19:21:21,875 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 19:21:21,974 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 19:21:21,975 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 19:21:22,099 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 19:21:22,105 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 19:21:22,105 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-18 19:21:22,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:21:22 BoogieIcfgContainer [2022-04-18 19:21:22,107 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 19:21:22,108 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 19:21:22,108 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 19:21:22,118 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 19:21:22,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:21:21" (1/3) ... [2022-04-18 19:21:22,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c627446 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:21:22, skipping insertion in model container [2022-04-18 19:21:22,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:21" (2/3) ... [2022-04-18 19:21:22,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c627446 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:21:22, skipping insertion in model container [2022-04-18 19:21:22,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:21:22" (3/3) ... [2022-04-18 19:21:22,121 INFO L111 eAbstractionObserver]: Analyzing ICFG nondet-loop-bound-1.i [2022-04-18 19:21:22,126 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 19:21:22,126 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 19:21:22,126 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2022-04-18 19:21:22,126 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 19:21:22,175 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 19:21:22,238 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 19:21:22,243 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 19:21:22,243 INFO L341 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-04-18 19:21:22,252 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 19:21:22,260 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 116 places, 114 transitions, 238 flow [2022-04-18 19:21:22,262 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 116 places, 114 transitions, 238 flow [2022-04-18 19:21:22,263 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 116 places, 114 transitions, 238 flow [2022-04-18 19:21:22,311 INFO L129 PetriNetUnfolder]: 5/130 cut-off events. [2022-04-18 19:21:22,312 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 19:21:22,315 INFO L84 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 130 events. 5/130 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 174 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 95. Up to 4 conditions per place. [2022-04-18 19:21:22,319 INFO L116 LiptonReduction]: Number of co-enabled transitions 1958 [2022-04-18 19:21:24,951 INFO L131 LiptonReduction]: Checked pairs total: 3877 [2022-04-18 19:21:24,952 INFO L133 LiptonReduction]: Total number of compositions: 127 [2022-04-18 19:21:24,958 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 26 transitions, 62 flow [2022-04-18 19:21:24,983 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 292 states, 255 states have (on average 2.9137254901960783) internal successors, (743), 291 states have internal predecessors, (743), 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 19:21:24,985 INFO L276 IsEmpty]: Start isEmpty. Operand has 292 states, 255 states have (on average 2.9137254901960783) internal successors, (743), 291 states have internal predecessors, (743), 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 19:21:24,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-04-18 19:21:24,988 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:21:24,989 INFO L499 BasicCegarLoop]: trace histogram [1] [2022-04-18 19:21:24,989 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2022-04-18 19:21:24,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:21:24,992 INFO L85 PathProgramCache]: Analyzing trace with hash 434, now seen corresponding path program 1 times [2022-04-18 19:21:24,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:21:24,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967192282] [2022-04-18 19:21:24,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:21:24,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:21:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:21:25,063 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 19:21:25,064 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:21:25,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967192282] [2022-04-18 19:21:25,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967192282] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:21:25,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:21:25,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-04-18 19:21:25,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152101482] [2022-04-18 19:21:25,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:21:25,068 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 19:21:25,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:21:25,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 19:21:25,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 19:21:25,083 INFO L87 Difference]: Start difference. First operand has 292 states, 255 states have (on average 2.9137254901960783) internal successors, (743), 291 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:21:25,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:21:25,108 INFO L93 Difference]: Finished difference Result 175 states and 407 transitions. [2022-04-18 19:21:25,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 19:21:25,109 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2022-04-18 19:21:25,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:21:25,115 INFO L225 Difference]: With dead ends: 175 [2022-04-18 19:21:25,115 INFO L226 Difference]: Without dead ends: 173 [2022-04-18 19:21:25,116 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 19:21:25,118 INFO L913 BasicCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 19:21:25,119 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 19:21:25,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-04-18 19:21:25,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2022-04-18 19:21:25,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 165 states have (on average 2.4363636363636365) internal successors, (402), 172 states have internal predecessors, (402), 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 19:21:25,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 402 transitions. [2022-04-18 19:21:25,146 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 402 transitions. Word has length 1 [2022-04-18 19:21:25,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:21:25,147 INFO L478 AbstractCegarLoop]: Abstraction has 173 states and 402 transitions. [2022-04-18 19:21:25,147 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:21:25,147 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 402 transitions. [2022-04-18 19:21:25,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-04-18 19:21:25,147 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:21:25,147 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2022-04-18 19:21:25,148 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 19:21:25,148 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2022-04-18 19:21:25,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:21:25,149 INFO L85 PathProgramCache]: Analyzing trace with hash 13356737, now seen corresponding path program 1 times [2022-04-18 19:21:25,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:21:25,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019523943] [2022-04-18 19:21:25,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:21:25,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:21:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:21:25,204 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 19:21:25,205 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:21:25,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019523943] [2022-04-18 19:21:25,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019523943] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:21:25,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:21:25,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 19:21:25,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895624207] [2022-04-18 19:21:25,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:21:25,207 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 19:21:25,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:21:25,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 19:21:25,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:21:25,208 INFO L87 Difference]: Start difference. First operand 173 states and 402 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 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 19:21:25,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:21:25,236 INFO L93 Difference]: Finished difference Result 208 states and 469 transitions. [2022-04-18 19:21:25,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 19:21:25,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 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 19:21:25,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:21:25,238 INFO L225 Difference]: With dead ends: 208 [2022-04-18 19:21:25,238 INFO L226 Difference]: Without dead ends: 204 [2022-04-18 19:21:25,239 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 19:21:25,239 INFO L913 BasicCegarLoop]: 6 mSDtfsCounter, 11 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 19:21:25,240 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 8 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 19:21:25,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-04-18 19:21:25,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 170. [2022-04-18 19:21:25,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 163 states have (on average 2.4171779141104293) internal successors, (394), 169 states have internal predecessors, (394), 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 19:21:25,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 394 transitions. [2022-04-18 19:21:25,251 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 394 transitions. Word has length 4 [2022-04-18 19:21:25,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:21:25,251 INFO L478 AbstractCegarLoop]: Abstraction has 170 states and 394 transitions. [2022-04-18 19:21:25,252 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 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 19:21:25,252 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 394 transitions. [2022-04-18 19:21:25,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-04-18 19:21:25,252 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:21:25,252 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 19:21:25,253 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 19:21:25,253 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2022-04-18 19:21:25,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:21:25,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1232084689, now seen corresponding path program 1 times [2022-04-18 19:21:25,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:21:25,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626928218] [2022-04-18 19:21:25,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:21:25,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:21:25,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:21:25,296 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 19:21:25,296 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:21:25,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626928218] [2022-04-18 19:21:25,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626928218] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:21:25,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:21:25,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 19:21:25,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515800588] [2022-04-18 19:21:25,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:21:25,298 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 19:21:25,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:21:25,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 19:21:25,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:21:25,298 INFO L87 Difference]: Start difference. First operand 170 states and 394 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 19:21:25,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:21:25,322 INFO L93 Difference]: Finished difference Result 164 states and 369 transitions. [2022-04-18 19:21:25,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 19:21:25,322 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 19:21:25,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:21:25,323 INFO L225 Difference]: With dead ends: 164 [2022-04-18 19:21:25,323 INFO L226 Difference]: Without dead ends: 158 [2022-04-18 19:21:25,323 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 19:21:25,324 INFO L913 BasicCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 19:21:25,325 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 7 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 19:21:25,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-04-18 19:21:25,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2022-04-18 19:21:25,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 153 states have (on average 2.30718954248366) internal successors, (353), 157 states have internal predecessors, (353), 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 19:21:25,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 353 transitions. [2022-04-18 19:21:25,331 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 353 transitions. Word has length 9 [2022-04-18 19:21:25,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:21:25,331 INFO L478 AbstractCegarLoop]: Abstraction has 158 states and 353 transitions. [2022-04-18 19:21:25,332 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 19:21:25,332 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 353 transitions. [2022-04-18 19:21:25,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-04-18 19:21:25,332 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:21:25,332 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 19:21:25,333 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 19:21:25,333 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2022-04-18 19:21:25,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:21:25,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1695353007, now seen corresponding path program 1 times [2022-04-18 19:21:25,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:21:25,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195481482] [2022-04-18 19:21:25,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:21:25,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:21:25,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:21:25,355 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 19:21:25,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:21:25,395 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-04-18 19:21:25,399 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 19:21:25,402 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 15 remaining) [2022-04-18 19:21:25,404 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2022-04-18 19:21:25,404 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2022-04-18 19:21:25,405 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2022-04-18 19:21:25,405 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2022-04-18 19:21:25,405 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2022-04-18 19:21:25,405 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2022-04-18 19:21:25,406 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2022-04-18 19:21:25,407 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2022-04-18 19:21:25,407 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2022-04-18 19:21:25,409 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 15 remaining) [2022-04-18 19:21:25,409 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 15 remaining) [2022-04-18 19:21:25,409 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2022-04-18 19:21:25,410 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2022-04-18 19:21:25,410 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2022-04-18 19:21:25,410 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 19:21:25,411 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-04-18 19:21:25,415 INFO L227 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-04-18 19:21:25,415 INFO L177 ceAbstractionStarter]: Computing trace abstraction results [2022-04-18 19:21:25,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:21:25 BasicIcfg [2022-04-18 19:21:25,453 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-18 19:21:25,454 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-04-18 19:21:25,454 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-04-18 19:21:25,454 INFO L275 PluginConnector]: Witness Printer initialized [2022-04-18 19:21:25,455 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:21:22" (3/4) ... [2022-04-18 19:21:25,457 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-04-18 19:21:25,457 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-04-18 19:21:25,457 INFO L158 Benchmark]: Toolchain (without parser) took 4414.77ms. Allocated memory was 94.4MB in the beginning and 125.8MB in the end (delta: 31.5MB). Free memory was 60.4MB in the beginning and 44.5MB in the end (delta: 16.0MB). Peak memory consumption was 45.9MB. Max. memory is 16.1GB. [2022-04-18 19:21:25,457 INFO L158 Benchmark]: CDTParser took 8.10ms. Allocated memory is still 94.4MB. Free memory was 48.1MB in the beginning and 65.4MB in the end (delta: -17.3MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. [2022-04-18 19:21:25,458 INFO L158 Benchmark]: CACSL2BoogieTranslator took 580.73ms. Allocated memory is still 94.4MB. Free memory was 60.1MB in the beginning and 61.7MB in the end (delta: -1.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-04-18 19:21:25,458 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.43ms. Allocated memory is still 94.4MB. Free memory was 61.7MB in the beginning and 59.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-04-18 19:21:25,458 INFO L158 Benchmark]: Boogie Preprocessor took 52.07ms. Allocated memory is still 94.4MB. Free memory was 59.6MB in the beginning and 58.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-04-18 19:21:25,458 INFO L158 Benchmark]: RCFGBuilder took 361.12ms. Allocated memory is still 94.4MB. Free memory was 58.3MB in the beginning and 45.8MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-04-18 19:21:25,459 INFO L158 Benchmark]: TraceAbstraction took 3345.34ms. Allocated memory was 94.4MB in the beginning and 125.8MB in the end (delta: 31.5MB). Free memory was 45.0MB in the beginning and 45.5MB in the end (delta: -464.0kB). Peak memory consumption was 33.8MB. Max. memory is 16.1GB. [2022-04-18 19:21:25,459 INFO L158 Benchmark]: Witness Printer took 2.67ms. Allocated memory is still 125.8MB. Free memory was 45.5MB in the beginning and 44.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-04-18 19:21:25,460 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 8.10ms. Allocated memory is still 94.4MB. Free memory was 48.1MB in the beginning and 65.4MB in the end (delta: -17.3MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 580.73ms. Allocated memory is still 94.4MB. Free memory was 60.1MB in the beginning and 61.7MB in the end (delta: -1.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.43ms. Allocated memory is still 94.4MB. Free memory was 61.7MB in the beginning and 59.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.07ms. Allocated memory is still 94.4MB. Free memory was 59.6MB in the beginning and 58.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 361.12ms. Allocated memory is still 94.4MB. Free memory was 58.3MB in the beginning and 45.8MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3345.34ms. Allocated memory was 94.4MB in the beginning and 125.8MB in the end (delta: 31.5MB). Free memory was 45.0MB in the beginning and 45.5MB in the end (delta: -464.0kB). Peak memory consumption was 33.8MB. Max. memory is 16.1GB. * Witness Printer took 2.67ms. Allocated memory is still 125.8MB. Free memory was 45.5MB in the beginning and 44.5MB in the end (delta: 1.0MB). 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: 2.7s, 116 PlacesBefore, 31 PlacesAfterwards, 114 TransitionsBefore, 26 TransitionsAfterwards, 1958 CoEnabledTransitionPairs, 8 FixpointIterations, 65 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 7 ConcurrentYvCompositions, 3 ChoiceCompositions, 127 TotalNumberOfCompositions, 3877 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2221, positive: 2089, positive conditional: 0, positive unconditional: 2089, negative: 132, negative conditional: 0, negative unconditional: 132, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1410, positive: 1377, positive conditional: 0, positive unconditional: 1377, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1410, positive: 1340, positive conditional: 0, positive unconditional: 1340, negative: 70, negative conditional: 0, negative unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 70, positive: 37, positive conditional: 0, positive unconditional: 37, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 99, positive: 49, positive conditional: 0, positive unconditional: 49, negative: 51, negative conditional: 0, negative unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2221, positive: 712, positive conditional: 0, positive unconditional: 712, negative: 99, negative conditional: 0, negative unconditional: 99, unknown: 1410, unknown conditional: 0, unknown unconditional: 1410] , Statistics on independence cache: Total cache size (in pairs): 74, Positive cache size: 64, Positive conditional cache size: 0, Positive unconditional cache size: 64, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - 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: 693]: Data race detected Data race detected The following path leads to a data race: [L690] 0 volatile int x; [L691] 0 volatile int n; [L701] 0 pthread_t t1, t2; [L702] 0 int i; [L703] 0 x = 0 [L704] 0 n = __VERIFIER_nondet_uint() [L705] EXPR 0 n >= 20 [L705] EXPR 0 n >= 20 && n < 40 [L705] EXPR 0 n < 40 [L705] EXPR 0 n >= 20 && n < 40 [L705] CALL 0 assume_abort_if_not(n >= 20 && n < 40) [L687] COND FALSE 0 !(!cond) [L705] RET 0 assume_abort_if_not(n >= 20 && n < 40) [L706] FCALL, FORK 0 pthread_create(&t1, 0, thr1, 0) VAL [\old(argc)=49, argc=49, argv={50:51}, argv={50:51}, n=20, pthread_create(&t1, 0, thr1, 0)=-2, t1={3:0}, t2={5:0}, x=0] [L693] 1 x < n VAL [arg={0:0}, arg={0:0}, n=20, x=0] [L707] 0 i = 0 VAL [\old(argc)=49, argc=49, argv={50:51}, argv={50:51}, i=0, n=20, t1={3:0}, t2={5:0}, x=0] [L707] 0 i < n [L707] COND TRUE 0 i < n [L708] FCALL, FORK 0 pthread_create(&t2, 0, thr2, 0) VAL [\old(argc)=49, arg={0:0}, argc=49, argv={50:51}, argv={50:51}, i=0, n=20, pthread_create(&t2, 0, thr2, 0)=-1, t1={3:0}, t2={5:0}, x=0] [L696] 2 int t; [L697] 2 t = x [L698] 2 x = t + 1 VAL [arg={0:0}, arg={0:0}, n=20, t=0, x=1, x = t + 1=52] [L693] 1 x < n VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, n=20, t=0, x=1, x = t + 1=52] Now there is a data race on ~x~0 between C: x = t + 1 [698] and C: x < n [693] - UnprovableResult [Line: 697]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 698]: 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: 703]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 704]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 705]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 705]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 707]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 708]: 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. - UnprovableResult [Line: 706]: 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 5 procedures, 143 locations, 15 error locations. Started 1 CEGAR loops. OverallTime: 3.2s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 19 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 82 IncrementalHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 15 mSDtfsCounter, 82 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=292occurred 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: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 34 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 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 19:21:25,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE