./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_79-equ_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_79-equ_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 2305533b08f16ed55fe1768852f1afe1d6f847d5ca6bb0bf597caf3ef6acd368 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 18:44:10,595 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 18:44:10,596 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 18:44:10,624 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 18:44:10,627 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 18:44:10,628 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 18:44:10,629 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 18:44:10,630 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 18:44:10,631 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 18:44:10,632 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 18:44:10,633 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 18:44:10,633 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 18:44:10,634 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 18:44:10,634 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 18:44:10,635 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 18:44:10,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 18:44:10,636 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 18:44:10,637 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 18:44:10,638 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 18:44:10,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 18:44:10,640 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 18:44:10,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 18:44:10,642 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 18:44:10,642 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 18:44:10,643 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 18:44:10,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 18:44:10,645 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 18:44:10,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 18:44:10,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 18:44:10,646 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 18:44:10,646 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 18:44:10,647 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 18:44:10,647 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 18:44:10,648 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 18:44:10,648 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 18:44:10,649 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 18:44:10,649 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 18:44:10,649 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 18:44:10,650 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 18:44:10,650 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 18:44:10,650 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 18:44:10,651 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 18:44:10,651 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-04-18 18:44:10,665 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 18:44:10,666 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 18:44:10,666 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 18:44:10,666 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 18:44:10,666 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 18:44:10,667 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 18:44:10,667 INFO L138 SettingsManager]: * User list type=DISABLED [2022-04-18 18:44:10,667 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-04-18 18:44:10,667 INFO L138 SettingsManager]: * Explicit value domain=true [2022-04-18 18:44:10,667 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-04-18 18:44:10,667 INFO L138 SettingsManager]: * Octagon Domain=false [2022-04-18 18:44:10,668 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-04-18 18:44:10,668 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-04-18 18:44:10,668 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-04-18 18:44:10,668 INFO L138 SettingsManager]: * Interval Domain=false [2022-04-18 18:44:10,668 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-04-18 18:44:10,668 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-04-18 18:44:10,668 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-04-18 18:44:10,669 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 18:44:10,669 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 18:44:10,669 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 18:44:10,669 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 18:44:10,669 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 18:44:10,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 18:44:10,670 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 18:44:10,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 18:44:10,670 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 18:44:10,670 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 18:44:10,670 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 18:44:10,670 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 18:44:10,670 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 18:44:10,671 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 18:44:10,671 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 18:44:10,671 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 18:44:10,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 18:44:10,671 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 18:44:10,671 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 18:44:10,671 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 18:44:10,672 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-04-18 18:44:10,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 18:44:10,672 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 18:44:10,672 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-18 18:44:10,672 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-18 18:44:10,672 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2305533b08f16ed55fe1768852f1afe1d6f847d5ca6bb0bf597caf3ef6acd368 [2022-04-18 18:44:10,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 18:44:10,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 18:44:10,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 18:44:10,854 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 18:44:10,855 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 18:44:10,856 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_79-equ_racefree.i [2022-04-18 18:44:10,908 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0b7e2eb69/e59926892c4043fd915c8ff930511dec/FLAG35e62c926 [2022-04-18 18:44:11,422 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 18:44:11,423 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_79-equ_racefree.i [2022-04-18 18:44:11,440 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0b7e2eb69/e59926892c4043fd915c8ff930511dec/FLAG35e62c926 [2022-04-18 18:44:11,732 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0b7e2eb69/e59926892c4043fd915c8ff930511dec [2022-04-18 18:44:11,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 18:44:11,735 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 18:44:11,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 18:44:11,736 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 18:44:11,738 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 18:44:11,739 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:44:11" (1/1) ... [2022-04-18 18:44:11,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27ce1621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:44:11, skipping insertion in model container [2022-04-18 18:44:11,740 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:44:11" (1/1) ... [2022-04-18 18:44:11,744 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 18:44:11,768 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 18:44:12,095 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_79-equ_racefree.i[47038,47051] [2022-04-18 18:44:12,134 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 18:44:12,143 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 18:44:12,171 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_79-equ_racefree.i[47038,47051] [2022-04-18 18:44:12,198 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 18:44:12,246 INFO L208 MainTranslator]: Completed translation [2022-04-18 18:44:12,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:44:12 WrapperNode [2022-04-18 18:44:12,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 18:44:12,248 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 18:44:12,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 18:44:12,248 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 18:44:12,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:44:12" (1/1) ... [2022-04-18 18:44:12,282 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:44:12" (1/1) ... [2022-04-18 18:44:12,313 INFO L137 Inliner]: procedures = 271, calls = 56, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 261 [2022-04-18 18:44:12,314 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 18:44:12,314 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 18:44:12,314 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 18:44:12,314 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 18:44:12,320 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:44:12" (1/1) ... [2022-04-18 18:44:12,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:44:12" (1/1) ... [2022-04-18 18:44:12,328 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:44:12" (1/1) ... [2022-04-18 18:44:12,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:44:12" (1/1) ... [2022-04-18 18:44:12,338 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:44:12" (1/1) ... [2022-04-18 18:44:12,349 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:44:12" (1/1) ... [2022-04-18 18:44:12,351 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:44:12" (1/1) ... [2022-04-18 18:44:12,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 18:44:12,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 18:44:12,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 18:44:12,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 18:44:12,372 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:44:12" (1/1) ... [2022-04-18 18:44:12,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 18:44:12,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 18:44:12,416 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 18:44:12,435 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 18:44:12,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 18:44:12,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 18:44:12,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 18:44:12,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 18:44:12,446 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-04-18 18:44:12,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 18:44:12,446 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-04-18 18:44:12,446 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-04-18 18:44:12,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 18:44:12,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 18:44:12,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 18:44:12,448 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 18:44:12,558 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 18:44:12,560 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 18:44:12,849 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 18:44:12,856 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 18:44:12,858 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2022-04-18 18:44:12,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:44:12 BoogieIcfgContainer [2022-04-18 18:44:12,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 18:44:12,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 18:44:12,864 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 18:44:12,866 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 18:44:12,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 06:44:11" (1/3) ... [2022-04-18 18:44:12,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14503da0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:44:12, skipping insertion in model container [2022-04-18 18:44:12,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:44:12" (2/3) ... [2022-04-18 18:44:12,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14503da0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:44:12, skipping insertion in model container [2022-04-18 18:44:12,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:44:12" (3/3) ... [2022-04-18 18:44:12,869 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_79-equ_racefree.i [2022-04-18 18:44:12,873 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 18:44:12,873 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 18:44:12,873 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-04-18 18:44:12,874 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 18:44:12,965 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-04-18 18:44:13,014 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 18:44:13,020 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 18:44:13,020 INFO L341 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-04-18 18:44:13,034 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 18:44:13,043 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 250 places, 275 transitions, 558 flow [2022-04-18 18:44:13,045 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 250 places, 275 transitions, 558 flow [2022-04-18 18:44:13,046 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 250 places, 275 transitions, 558 flow [2022-04-18 18:44:13,154 INFO L129 PetriNetUnfolder]: 42/386 cut-off events. [2022-04-18 18:44:13,155 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 18:44:13,161 INFO L84 FinitePrefix]: Finished finitePrefix Result has 392 conditions, 386 events. 42/386 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1589 event pairs, 0 based on Foata normal form. 0/324 useless extension candidates. Maximal degree in co-relation 207. Up to 8 conditions per place. [2022-04-18 18:44:13,175 INFO L116 LiptonReduction]: Number of co-enabled transitions 21294 [2022-04-18 18:44:19,889 INFO L131 LiptonReduction]: Checked pairs total: 189807 [2022-04-18 18:44:19,889 INFO L133 LiptonReduction]: Total number of compositions: 236 [2022-04-18 18:44:19,905 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 110 places, 131 transitions, 270 flow [2022-04-18 18:44:19,997 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2841 states, 2781 states have (on average 2.428982380438691) internal successors, (6755), 2840 states have internal predecessors, (6755), 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 18:44:20,004 INFO L276 IsEmpty]: Start isEmpty. Operand has 2841 states, 2781 states have (on average 2.428982380438691) internal successors, (6755), 2840 states have internal predecessors, (6755), 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 18:44:20,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-04-18 18:44:20,010 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:44:20,010 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-04-18 18:44:20,011 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-04-18 18:44:20,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:44:20,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1240549775, now seen corresponding path program 1 times [2022-04-18 18:44:20,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:44:20,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795721264] [2022-04-18 18:44:20,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:44:20,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:44:20,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 18:44:20,174 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 18:44:20,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 18:44:20,240 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-04-18 18:44:20,242 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 18:44:20,243 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-04-18 18:44:20,244 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2022-04-18 18:44:20,244 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2022-04-18 18:44:20,244 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2022-04-18 18:44:20,245 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2022-04-18 18:44:20,245 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2022-04-18 18:44:20,245 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2022-04-18 18:44:20,245 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2022-04-18 18:44:20,246 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2022-04-18 18:44:20,246 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2022-04-18 18:44:20,246 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2022-04-18 18:44:20,246 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2022-04-18 18:44:20,246 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2022-04-18 18:44:20,247 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2022-04-18 18:44:20,247 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2022-04-18 18:44:20,247 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2022-04-18 18:44:20,247 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2022-04-18 18:44:20,248 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 18:44:20,249 INFO L719 BasicCegarLoop]: Path program histogram: [1] [2022-04-18 18:44:20,250 WARN L232 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 18:44:20,250 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-04-18 18:44:20,292 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-04-18 18:44:20,294 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 18:44:20,298 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 18:44:20,298 INFO L341 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-04-18 18:44:20,302 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 18:44:20,302 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 332 places, 368 transitions, 754 flow [2022-04-18 18:44:20,302 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 332 places, 368 transitions, 754 flow [2022-04-18 18:44:20,302 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 332 places, 368 transitions, 754 flow [2022-04-18 18:44:20,383 INFO L129 PetriNetUnfolder]: 71/621 cut-off events. [2022-04-18 18:44:20,383 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-04-18 18:44:20,393 INFO L84 FinitePrefix]: Finished finitePrefix Result has 635 conditions, 621 events. 71/621 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3084 event pairs, 0 based on Foata normal form. 0/517 useless extension candidates. Maximal degree in co-relation 388. Up to 12 conditions per place. [2022-04-18 18:44:20,423 INFO L116 LiptonReduction]: Number of co-enabled transitions 61152 [2022-04-18 18:44:27,855 INFO L131 LiptonReduction]: Checked pairs total: 552843 [2022-04-18 18:44:27,855 INFO L133 LiptonReduction]: Total number of compositions: 310 [2022-04-18 18:44:27,858 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 161 places, 192 transitions, 402 flow [2022-04-18 18:44:31,402 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 135983 states, 135599 states have (on average 3.5877181985117885) internal successors, (486491), 135982 states have internal predecessors, (486491), 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 18:44:31,612 INFO L276 IsEmpty]: Start isEmpty. Operand has 135983 states, 135599 states have (on average 3.5877181985117885) internal successors, (486491), 135982 states have internal predecessors, (486491), 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 18:44:31,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-04-18 18:44:31,615 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:44:31,615 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 18:44:31,615 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-04-18 18:44:31,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:44:31,619 INFO L85 PathProgramCache]: Analyzing trace with hash -2017081797, now seen corresponding path program 1 times [2022-04-18 18:44:31,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:44:31,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824943343] [2022-04-18 18:44:31,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:44:31,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:44:31,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:44:31,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 18:44:31,675 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:44:31,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824943343] [2022-04-18 18:44:31,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824943343] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 18:44:31,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 18:44:31,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 18:44:31,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789728443] [2022-04-18 18:44:31,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 18:44:31,679 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 18:44:31,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:44:31,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 18:44:31,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 18:44:31,934 INFO L87 Difference]: Start difference. First operand has 135983 states, 135599 states have (on average 3.5877181985117885) internal successors, (486491), 135982 states have internal predecessors, (486491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:44:34,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:44:34,087 INFO L93 Difference]: Finished difference Result 135983 states and 404544 transitions. [2022-04-18 18:44:34,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 18:44:34,089 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-04-18 18:44:34,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:44:35,160 INFO L225 Difference]: With dead ends: 135983 [2022-04-18 18:44:35,160 INFO L226 Difference]: Without dead ends: 135947 [2022-04-18 18:44:35,161 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 18:44:35,163 INFO L913 BasicCegarLoop]: 100 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-18 18:44:35,164 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 100 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-18 18:44:35,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135947 states. [2022-04-18 18:44:39,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135947 to 135947. [2022-04-18 18:44:39,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135947 states, 135567 states have (on average 2.983292394166722) internal successors, (404436), 135946 states have internal predecessors, (404436), 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 18:44:40,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135947 states to 135947 states and 404436 transitions. [2022-04-18 18:44:40,398 INFO L78 Accepts]: Start accepts. Automaton has 135947 states and 404436 transitions. Word has length 9 [2022-04-18 18:44:40,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:44:40,398 INFO L478 AbstractCegarLoop]: Abstraction has 135947 states and 404436 transitions. [2022-04-18 18:44:40,398 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:44:40,399 INFO L276 IsEmpty]: Start isEmpty. Operand 135947 states and 404436 transitions. [2022-04-18 18:44:40,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-04-18 18:44:40,400 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:44:40,400 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 18:44:40,400 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 18:44:40,400 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-04-18 18:44:40,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:44:40,401 INFO L85 PathProgramCache]: Analyzing trace with hash 663427717, now seen corresponding path program 1 times [2022-04-18 18:44:40,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:44:40,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398309906] [2022-04-18 18:44:40,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:44:40,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:44:40,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:44:40,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 18:44:40,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:44:40,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398309906] [2022-04-18 18:44:40,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398309906] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 18:44:40,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 18:44:40,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 18:44:40,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648725872] [2022-04-18 18:44:40,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 18:44:40,501 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 18:44:40,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:44:41,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 18:44:41,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 18:44:41,069 INFO L87 Difference]: Start difference. First operand 135947 states and 404436 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:44:41,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:44:41,982 INFO L93 Difference]: Finished difference Result 135901 states and 404388 transitions. [2022-04-18 18:44:41,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 18:44:41,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-04-18 18:44:41,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:44:42,967 INFO L225 Difference]: With dead ends: 135901 [2022-04-18 18:44:42,967 INFO L226 Difference]: Without dead ends: 135901 [2022-04-18 18:44:42,968 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 18:44:42,968 INFO L913 BasicCegarLoop]: 100 mSDtfsCounter, 50 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-18 18:44:42,969 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 200 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-18 18:44:43,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135901 states. [2022-04-18 18:44:46,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135901 to 135901. [2022-04-18 18:44:46,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135901 states, 135526 states have (on average 2.983840739046382) internal successors, (404388), 135900 states have internal predecessors, (404388), 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 18:44:47,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135901 states to 135901 states and 404388 transitions. [2022-04-18 18:44:47,232 INFO L78 Accepts]: Start accepts. Automaton has 135901 states and 404388 transitions. Word has length 10 [2022-04-18 18:44:47,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:44:47,233 INFO L478 AbstractCegarLoop]: Abstraction has 135901 states and 404388 transitions. [2022-04-18 18:44:47,233 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:44:47,233 INFO L276 IsEmpty]: Start isEmpty. Operand 135901 states and 404388 transitions. [2022-04-18 18:44:47,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-18 18:44:47,237 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:44:47,238 INFO L499 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-04-18 18:44:47,238 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 18:44:47,238 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-04-18 18:44:47,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:44:47,239 INFO L85 PathProgramCache]: Analyzing trace with hash -337747319, now seen corresponding path program 1 times [2022-04-18 18:44:47,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:44:47,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884168660] [2022-04-18 18:44:47,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:44:47,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:44:47,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 18:44:47,284 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 18:44:47,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 18:44:47,310 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-04-18 18:44:47,314 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 18:44:47,315 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2022-04-18 18:44:47,315 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2022-04-18 18:44:47,315 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2022-04-18 18:44:47,316 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2022-04-18 18:44:47,316 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2022-04-18 18:44:47,317 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2022-04-18 18:44:47,317 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2022-04-18 18:44:47,317 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2022-04-18 18:44:47,317 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2022-04-18 18:44:47,317 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2022-04-18 18:44:47,318 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2022-04-18 18:44:47,318 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2022-04-18 18:44:47,318 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2022-04-18 18:44:47,318 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2022-04-18 18:44:47,318 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2022-04-18 18:44:47,318 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2022-04-18 18:44:47,319 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2022-04-18 18:44:47,319 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2022-04-18 18:44:47,319 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2022-04-18 18:44:47,319 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2022-04-18 18:44:47,320 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2022-04-18 18:44:47,320 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2022-04-18 18:44:47,320 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 18:44:47,321 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-04-18 18:44:47,321 WARN L232 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 18:44:47,321 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-04-18 18:44:47,346 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-04-18 18:44:47,347 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 18:44:47,349 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 18:44:47,351 INFO L341 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2022-04-18 18:44:47,353 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 18:44:47,353 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 414 places, 461 transitions, 952 flow [2022-04-18 18:44:47,353 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 414 places, 461 transitions, 952 flow [2022-04-18 18:44:47,354 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 414 places, 461 transitions, 952 flow [2022-04-18 18:44:47,457 INFO L129 PetriNetUnfolder]: 105/901 cut-off events. [2022-04-18 18:44:47,457 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-04-18 18:44:47,473 INFO L84 FinitePrefix]: Finished finitePrefix Result has 929 conditions, 901 events. 105/901 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 4897 event pairs, 1 based on Foata normal form. 0/749 useless extension candidates. Maximal degree in co-relation 629. Up to 16 conditions per place. [2022-04-18 18:44:47,511 INFO L116 LiptonReduction]: Number of co-enabled transitions 117390 [2022-04-18 18:44:58,913 INFO L131 LiptonReduction]: Checked pairs total: 1140328 [2022-04-18 18:44:58,914 INFO L133 LiptonReduction]: Total number of compositions: 390 [2022-04-18 18:44:58,915 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 210 places, 251 transitions, 532 flow