./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_10-ptrmunge_racefree.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/goblint-regression/28-race_reach_10-ptrmunge_racefree.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 337bc30baab893db6c1e898eac989d238a0e57740b5469c94ed68dbaffc92f80 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 18:42:06,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 18:42:06,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 18:42:06,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 18:42:06,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 18:42:06,459 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 18:42:06,460 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 18:42:06,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 18:42:06,464 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 18:42:06,469 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 18:42:06,470 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 18:42:06,471 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 18:42:06,471 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 18:42:06,473 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 18:42:06,475 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 18:42:06,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 18:42:06,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 18:42:06,480 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 18:42:06,481 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 18:42:06,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 18:42:06,488 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 18:42:06,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 18:42:06,489 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 18:42:06,489 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 18:42:06,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 18:42:06,492 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 18:42:06,492 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 18:42:06,493 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 18:42:06,494 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 18:42:06,494 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 18:42:06,495 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 18:42:06,496 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 18:42:06,497 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 18:42:06,497 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 18:42:06,498 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 18:42:06,498 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 18:42:06,499 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 18:42:06,499 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 18:42:06,499 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 18:42:06,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 18:42:06,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 18:42:06,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 18:42:06,502 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-04-18 18:42:06,530 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 18:42:06,530 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 18:42:06,531 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 18:42:06,531 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 18:42:06,531 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 18:42:06,531 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 18:42:06,532 INFO L138 SettingsManager]: * User list type=DISABLED [2022-04-18 18:42:06,532 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-04-18 18:42:06,532 INFO L138 SettingsManager]: * Explicit value domain=true [2022-04-18 18:42:06,533 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-04-18 18:42:06,533 INFO L138 SettingsManager]: * Octagon Domain=false [2022-04-18 18:42:06,533 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-04-18 18:42:06,533 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-04-18 18:42:06,533 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-04-18 18:42:06,533 INFO L138 SettingsManager]: * Interval Domain=false [2022-04-18 18:42:06,534 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-04-18 18:42:06,534 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-04-18 18:42:06,534 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-04-18 18:42:06,535 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 18:42:06,535 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 18:42:06,535 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 18:42:06,535 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 18:42:06,535 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 18:42:06,535 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 18:42:06,536 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 18:42:06,536 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 18:42:06,536 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 18:42:06,536 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 18:42:06,536 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 18:42:06,536 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 18:42:06,537 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 18:42:06,537 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 18:42:06,537 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 18:42:06,537 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 18:42:06,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 18:42:06,537 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 18:42:06,538 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 18:42:06,538 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 18:42:06,538 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-04-18 18:42:06,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 18:42:06,538 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 18:42:06,538 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-18 18:42:06,538 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-18 18:42:06,539 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 337bc30baab893db6c1e898eac989d238a0e57740b5469c94ed68dbaffc92f80 [2022-04-18 18:42:06,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 18:42:06,736 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 18:42:06,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 18:42:06,738 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 18:42:06,739 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 18:42:06,740 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_10-ptrmunge_racefree.i [2022-04-18 18:42:06,794 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/dceac0fb0/2ba38d873ff64bccb704292878a5a4d8/FLAG1ed8e831b [2022-04-18 18:42:07,180 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 18:42:07,181 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_10-ptrmunge_racefree.i [2022-04-18 18:42:07,190 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/dceac0fb0/2ba38d873ff64bccb704292878a5a4d8/FLAG1ed8e831b [2022-04-18 18:42:07,566 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/dceac0fb0/2ba38d873ff64bccb704292878a5a4d8 [2022-04-18 18:42:07,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 18:42:07,568 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 18:42:07,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 18:42:07,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 18:42:07,574 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 18:42:07,574 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:42:07" (1/1) ... [2022-04-18 18:42:07,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23e64265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:07, skipping insertion in model container [2022-04-18 18:42:07,575 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:42:07" (1/1) ... [2022-04-18 18:42:07,580 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 18:42:07,602 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 18:42:07,880 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_10-ptrmunge_racefree.i[30176,30189] [2022-04-18 18:42:07,909 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 18:42:07,919 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 18:42:07,952 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_10-ptrmunge_racefree.i[30176,30189] [2022-04-18 18:42:07,980 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 18:42:08,005 INFO L208 MainTranslator]: Completed translation [2022-04-18 18:42:08,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:08 WrapperNode [2022-04-18 18:42:08,006 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 18:42:08,007 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 18:42:08,007 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 18:42:08,007 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 18:42:08,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:08" (1/1) ... [2022-04-18 18:42:08,024 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:08" (1/1) ... [2022-04-18 18:42:08,044 INFO L137 Inliner]: procedures = 172, calls = 52, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 286 [2022-04-18 18:42:08,051 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 18:42:08,052 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 18:42:08,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 18:42:08,053 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 18:42:08,059 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:08" (1/1) ... [2022-04-18 18:42:08,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:08" (1/1) ... [2022-04-18 18:42:08,067 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:08" (1/1) ... [2022-04-18 18:42:08,067 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:08" (1/1) ... [2022-04-18 18:42:08,079 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:08" (1/1) ... [2022-04-18 18:42:08,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:08" (1/1) ... [2022-04-18 18:42:08,089 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:08" (1/1) ... [2022-04-18 18:42:08,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 18:42:08,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 18:42:08,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 18:42:08,093 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 18:42:08,095 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:08" (1/1) ... [2022-04-18 18:42:08,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 18:42:08,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 18:42:08,126 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-18 18:42:08,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-18 18:42:08,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 18:42:08,156 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-04-18 18:42:08,156 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-04-18 18:42:08,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 18:42:08,156 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-04-18 18:42:08,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 18:42:08,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 18:42:08,156 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-04-18 18:42:08,157 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-04-18 18:42:08,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 18:42:08,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 18:42:08,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 18:42:08,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 18:42:08,158 WARN L208 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-04-18 18:42:08,251 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 18:42:08,252 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 18:42:08,595 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 18:42:08,607 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 18:42:08,607 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2022-04-18 18:42:08,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:42:08 BoogieIcfgContainer [2022-04-18 18:42:08,610 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 18:42:08,611 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 18:42:08,612 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 18:42:08,614 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 18:42:08,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 06:42:07" (1/3) ... [2022-04-18 18:42:08,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fb34312 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:42:08, skipping insertion in model container [2022-04-18 18:42:08,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:08" (2/3) ... [2022-04-18 18:42:08,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fb34312 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:42:08, skipping insertion in model container [2022-04-18 18:42:08,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:42:08" (3/3) ... [2022-04-18 18:42:08,617 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_10-ptrmunge_racefree.i [2022-04-18 18:42:08,627 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 18:42:08,628 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 18:42:08,629 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-04-18 18:42:08,629 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 18:42:08,715 INFO L135 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-04-18 18:42:08,745 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 18:42:08,750 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-18 18:42:08,751 INFO L341 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2022-04-18 18:42:08,768 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 18:42:08,777 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 278 places, 305 transitions, 632 flow [2022-04-18 18:42:08,782 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 278 places, 305 transitions, 632 flow [2022-04-18 18:42:08,784 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 278 places, 305 transitions, 632 flow [2022-04-18 18:42:08,940 INFO L129 PetriNetUnfolder]: 58/545 cut-off events. [2022-04-18 18:42:08,940 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-04-18 18:42:08,950 INFO L84 FinitePrefix]: Finished finitePrefix Result has 565 conditions, 545 events. 58/545 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2803 event pairs, 0 based on Foata normal form. 0/458 useless extension candidates. Maximal degree in co-relation 301. Up to 8 conditions per place. [2022-04-18 18:42:08,980 INFO L116 LiptonReduction]: Number of co-enabled transitions 41904 [2022-04-18 18:42:15,211 INFO L131 LiptonReduction]: Checked pairs total: 334858 [2022-04-18 18:42:15,211 INFO L133 LiptonReduction]: Total number of compositions: 250 [2022-04-18 18:42:15,224 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 128 places, 149 transitions, 320 flow [2022-04-18 18:42:16,421 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 48858 states, 48592 states have (on average 3.3395826473493577) internal successors, (162277), 48857 states have internal predecessors, (162277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:42:16,497 INFO L276 IsEmpty]: Start isEmpty. Operand has 48858 states, 48592 states have (on average 3.3395826473493577) internal successors, (162277), 48857 states have internal predecessors, (162277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:42:16,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-04-18 18:42:16,502 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:42:16,502 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-04-18 18:42:16,503 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr4ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-04-18 18:42:16,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:42:16,506 INFO L85 PathProgramCache]: Analyzing trace with hash -84175950, now seen corresponding path program 1 times [2022-04-18 18:42:16,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:42:16,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500145795] [2022-04-18 18:42:16,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:42:16,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:42:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 18:42:16,631 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 18:42:16,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 18:42:16,687 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-04-18 18:42:16,688 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 18:42:16,689 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (23 of 24 remaining) [2022-04-18 18:42:16,691 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (22 of 24 remaining) [2022-04-18 18:42:16,691 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (21 of 24 remaining) [2022-04-18 18:42:16,691 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (20 of 24 remaining) [2022-04-18 18:42:16,692 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (19 of 24 remaining) [2022-04-18 18:42:16,692 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (18 of 24 remaining) [2022-04-18 18:42:16,693 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (17 of 24 remaining) [2022-04-18 18:42:16,693 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 24 remaining) [2022-04-18 18:42:16,693 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 24 remaining) [2022-04-18 18:42:16,693 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 24 remaining) [2022-04-18 18:42:16,694 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 24 remaining) [2022-04-18 18:42:16,694 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 24 remaining) [2022-04-18 18:42:16,694 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 24 remaining) [2022-04-18 18:42:16,695 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 24 remaining) [2022-04-18 18:42:16,695 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 24 remaining) [2022-04-18 18:42:16,695 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 24 remaining) [2022-04-18 18:42:16,695 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 24 remaining) [2022-04-18 18:42:16,696 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 24 remaining) [2022-04-18 18:42:16,696 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 24 remaining) [2022-04-18 18:42:16,696 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 24 remaining) [2022-04-18 18:42:16,697 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 24 remaining) [2022-04-18 18:42:16,697 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 24 remaining) [2022-04-18 18:42:16,698 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 24 remaining) [2022-04-18 18:42:16,698 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 24 remaining) [2022-04-18 18:42:16,698 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 18:42:16,700 INFO L719 BasicCegarLoop]: Path program histogram: [1] [2022-04-18 18:42:16,701 WARN L232 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 18:42:16,702 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-04-18 18:42:16,758 INFO L135 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-04-18 18:42:16,761 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 18:42:16,765 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-18 18:42:16,765 INFO L341 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2022-04-18 18:42:16,769 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 18:42:16,770 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 454 places, 505 transitions, 1058 flow [2022-04-18 18:42:16,770 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 454 places, 505 transitions, 1058 flow [2022-04-18 18:42:16,770 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 454 places, 505 transitions, 1058 flow [2022-04-18 18:42:17,215 INFO L129 PetriNetUnfolder]: 197/1604 cut-off events. [2022-04-18 18:42:17,216 INFO L130 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-04-18 18:42:17,240 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1701 conditions, 1604 events. 197/1604 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 11415 event pairs, 1 based on Foata normal form. 0/1348 useless extension candidates. Maximal degree in co-relation 968. Up to 32 conditions per place. [2022-04-18 18:42:17,327 INFO L116 LiptonReduction]: Number of co-enabled transitions 162960 [2022-04-18 18:42:29,576 INFO L131 LiptonReduction]: Checked pairs total: 1443853 [2022-04-18 18:42:29,576 INFO L133 LiptonReduction]: Total number of compositions: 411 [2022-04-18 18:42:29,577 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 229 places, 273 transitions, 594 flow