./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/12_fmaxsymopt_cas.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/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/12_fmaxsymopt_cas.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7a0803bc25bdee4cec741e6286f7294c3704d91bb65e5684830693d517eafafb --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 15:55:31,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 15:55:31,472 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 15:55:31,509 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 15:55:31,510 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 15:55:31,511 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 15:55:31,515 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 15:55:31,521 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 15:55:31,522 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 15:55:31,527 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 15:55:31,528 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 15:55:31,530 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 15:55:31,530 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 15:55:31,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 15:55:31,534 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 15:55:31,535 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 15:55:31,536 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 15:55:31,537 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 15:55:31,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 15:55:31,546 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 15:55:31,548 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 15:55:31,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 15:55:31,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 15:55:31,550 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 15:55:31,554 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 15:55:31,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 15:55:31,561 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 15:55:31,561 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 15:55:31,562 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 15:55:31,562 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 15:55:31,564 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 15:55:31,564 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 15:55:31,566 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 15:55:31,567 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 15:55:31,567 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 15:55:31,569 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 15:55:31,569 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 15:55:31,570 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 15:55:31,570 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 15:55:31,570 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 15:55:31,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 15:55:31,572 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 15:55:31,573 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-04-18 15:55:31,605 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 15:55:31,606 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 15:55:31,606 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 15:55:31,606 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 15:55:31,607 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 15:55:31,607 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 15:55:31,609 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-18 15:55:31,609 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-18 15:55:31,609 INFO L138 SettingsManager]: * Use SBE=true [2022-04-18 15:55:31,610 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 15:55:31,610 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 15:55:31,611 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 15:55:31,611 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 15:55:31,611 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 15:55:31,611 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 15:55:31,611 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 15:55:31,611 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 15:55:31,612 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 15:55:31,612 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 15:55:31,612 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 15:55:31,612 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 15:55:31,612 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 15:55:31,612 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 15:55:31,613 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 15:55:31,613 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-18 15:55:31,613 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 15:55:31,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:55:31,613 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 15:55:31,614 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 15:55:31,614 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 15:55:31,614 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-18 15:55:31,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 15:55:31,614 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-18 15:55:31,615 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-18 15:55:31,615 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 15:55:31,615 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/UAutomizer-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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a0803bc25bdee4cec741e6286f7294c3704d91bb65e5684830693d517eafafb [2022-04-18 15:55:31,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 15:55:31,935 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 15:55:31,937 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 15:55:31,938 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 15:55:31,939 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 15:55:31,940 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/12_fmaxsymopt_cas.i [2022-04-18 15:55:31,998 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e453ee0b/86f73081450a497b9c5b52f6593f17f4/FLAG106ff7af7 [2022-04-18 15:55:32,540 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 15:55:32,541 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/12_fmaxsymopt_cas.i [2022-04-18 15:55:32,556 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e453ee0b/86f73081450a497b9c5b52f6593f17f4/FLAG106ff7af7 [2022-04-18 15:55:32,839 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e453ee0b/86f73081450a497b9c5b52f6593f17f4 [2022-04-18 15:55:32,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 15:55:32,843 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 15:55:32,846 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 15:55:32,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 15:55:32,849 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 15:55:32,849 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:55:32" (1/1) ... [2022-04-18 15:55:32,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44315b92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:55:32, skipping insertion in model container [2022-04-18 15:55:32,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:55:32" (1/1) ... [2022-04-18 15:55:32,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 15:55:32,897 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 15:55:33,322 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/12_fmaxsymopt_cas.i[30582,30595] [2022-04-18 15:55:33,332 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:55:33,341 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 15:55:33,396 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/12_fmaxsymopt_cas.i[30582,30595] [2022-04-18 15:55:33,418 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:55:33,455 INFO L208 MainTranslator]: Completed translation [2022-04-18 15:55:33,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:55:33 WrapperNode [2022-04-18 15:55:33,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 15:55:33,458 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 15:55:33,458 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 15:55:33,458 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 15:55:33,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:55:33" (1/1) ... [2022-04-18 15:55:33,495 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:55:33" (1/1) ... [2022-04-18 15:55:33,527 INFO L137 Inliner]: procedures = 170, calls = 32, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 147 [2022-04-18 15:55:33,528 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 15:55:33,531 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 15:55:33,531 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 15:55:33,531 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 15:55:33,543 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:55:33" (1/1) ... [2022-04-18 15:55:33,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:55:33" (1/1) ... [2022-04-18 15:55:33,558 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:55:33" (1/1) ... [2022-04-18 15:55:33,559 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:55:33" (1/1) ... [2022-04-18 15:55:33,570 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:55:33" (1/1) ... [2022-04-18 15:55:33,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:55:33" (1/1) ... [2022-04-18 15:55:33,586 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:55:33" (1/1) ... [2022-04-18 15:55:33,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 15:55:33,599 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 15:55:33,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 15:55:33,603 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 15:55:33,604 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:55:33" (1/1) ... [2022-04-18 15:55:33,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:55:33,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:55:33,637 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-18 15:55:33,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-18 15:55:33,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 15:55:33,691 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-04-18 15:55:33,691 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-04-18 15:55:33,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 15:55:33,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 15:55:33,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 15:55:33,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 15:55:33,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 15:55:33,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 15:55:33,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 15:55:33,694 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-04-18 15:55:33,812 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 15:55:33,814 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 15:55:34,077 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 15:55:34,243 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 15:55:34,244 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-04-18 15:55:34,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:55:34 BoogieIcfgContainer [2022-04-18 15:55:34,246 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 15:55:34,249 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 15:55:34,249 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 15:55:34,253 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 15:55:34,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:55:32" (1/3) ... [2022-04-18 15:55:34,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b0d230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:55:34, skipping insertion in model container [2022-04-18 15:55:34,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:55:33" (2/3) ... [2022-04-18 15:55:34,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b0d230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:55:34, skipping insertion in model container [2022-04-18 15:55:34,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:55:34" (3/3) ... [2022-04-18 15:55:34,257 INFO L111 eAbstractionObserver]: Analyzing ICFG 12_fmaxsymopt_cas.i [2022-04-18 15:55:34,263 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 15:55:34,263 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 15:55:34,263 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-04-18 15:55:34,263 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 15:55:34,349 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 15:55:34,394 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:55:34,406 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=PETRI_NET, 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 15:55:34,406 INFO L341 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-04-18 15:55:34,420 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 121 places, 129 transitions, 263 flow [2022-04-18 15:55:34,491 INFO L129 PetriNetUnfolder]: 12/140 cut-off events. [2022-04-18 15:55:34,492 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:55:34,498 INFO L84 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 140 events. 12/140 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 203 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 103. Up to 4 conditions per place. [2022-04-18 15:55:34,499 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 129 transitions, 263 flow [2022-04-18 15:55:34,508 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 129 transitions, 263 flow [2022-04-18 15:55:34,530 INFO L129 PetriNetUnfolder]: 2/55 cut-off events. [2022-04-18 15:55:34,531 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:55:34,532 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:55:34,532 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:55:34,533 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2022-04-18 15:55:34,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:55:34,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1833134611, now seen corresponding path program 1 times [2022-04-18 15:55:34,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:55:34,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357531790] [2022-04-18 15:55:34,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:55:34,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:55:34,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:55:34,680 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:55:34,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:55:34,741 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:55:34,743 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:55:34,744 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-04-18 15:55:34,746 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2022-04-18 15:55:34,747 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2022-04-18 15:55:34,747 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2022-04-18 15:55:34,747 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2022-04-18 15:55:34,748 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2022-04-18 15:55:34,748 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2022-04-18 15:55:34,749 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2022-04-18 15:55:34,749 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2022-04-18 15:55:34,749 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2022-04-18 15:55:34,749 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2022-04-18 15:55:34,750 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2022-04-18 15:55:34,750 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2022-04-18 15:55:34,750 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2022-04-18 15:55:34,751 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2022-04-18 15:55:34,751 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2022-04-18 15:55:34,751 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2022-04-18 15:55:34,752 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 15:55:34,755 INFO L719 BasicCegarLoop]: Path program histogram: [1] [2022-04-18 15:55:34,757 WARN L232 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:55:34,757 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-04-18 15:55:34,839 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 15:55:34,847 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:55:34,849 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=PETRI_NET, 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 15:55:34,849 INFO L341 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-04-18 15:55:34,857 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 204 places, 220 transitions, 452 flow [2022-04-18 15:55:34,928 INFO L129 PetriNetUnfolder]: 23/244 cut-off events. [2022-04-18 15:55:34,928 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-04-18 15:55:34,936 INFO L84 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 244 events. 23/244 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 652 event pairs, 0 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 193. Up to 6 conditions per place. [2022-04-18 15:55:34,936 INFO L82 GeneralOperation]: Start removeDead. Operand has 204 places, 220 transitions, 452 flow [2022-04-18 15:55:34,941 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 204 places, 220 transitions, 452 flow [2022-04-18 15:55:34,970 INFO L129 PetriNetUnfolder]: 4/84 cut-off events. [2022-04-18 15:55:34,971 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-04-18 15:55:34,971 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:55:34,971 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:55:34,972 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2022-04-18 15:55:34,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:55:34,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1504027776, now seen corresponding path program 1 times [2022-04-18 15:55:34,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:55:34,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458791575] [2022-04-18 15:55:34,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:55:34,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:55:35,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:55:35,022 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:55:35,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:55:35,045 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:55:35,046 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:55:35,046 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2022-04-18 15:55:35,046 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2022-04-18 15:55:35,047 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2022-04-18 15:55:35,047 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2022-04-18 15:55:35,047 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2022-04-18 15:55:35,047 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2022-04-18 15:55:35,048 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2022-04-18 15:55:35,048 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2022-04-18 15:55:35,048 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2022-04-18 15:55:35,048 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2022-04-18 15:55:35,049 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2022-04-18 15:55:35,049 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2022-04-18 15:55:35,049 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2022-04-18 15:55:35,049 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2022-04-18 15:55:35,050 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2022-04-18 15:55:35,050 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2022-04-18 15:55:35,050 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2022-04-18 15:55:35,050 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2022-04-18 15:55:35,050 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2022-04-18 15:55:35,051 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2022-04-18 15:55:35,051 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2022-04-18 15:55:35,051 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2022-04-18 15:55:35,051 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2022-04-18 15:55:35,052 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2022-04-18 15:55:35,052 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2022-04-18 15:55:35,052 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 15:55:35,053 INFO L719 BasicCegarLoop]: Path program histogram: [1] [2022-04-18 15:55:35,053 WARN L232 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:55:35,053 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-04-18 15:55:35,140 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 15:55:35,143 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:55:35,147 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=PETRI_NET, 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 15:55:35,147 INFO L341 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2022-04-18 15:55:35,151 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 287 places, 311 transitions, 643 flow [2022-04-18 15:55:35,240 INFO L129 PetriNetUnfolder]: 34/348 cut-off events. [2022-04-18 15:55:35,240 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-04-18 15:55:35,247 INFO L84 FinitePrefix]: Finished finitePrefix Result has 364 conditions, 348 events. 34/348 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1186 event pairs, 0 based on Foata normal form. 0/286 useless extension candidates. Maximal degree in co-relation 283. Up to 8 conditions per place. [2022-04-18 15:55:35,248 INFO L82 GeneralOperation]: Start removeDead. Operand has 287 places, 311 transitions, 643 flow [2022-04-18 15:55:35,255 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 287 places, 311 transitions, 643 flow [2022-04-18 15:55:35,270 INFO L129 PetriNetUnfolder]: 8/124 cut-off events. [2022-04-18 15:55:35,271 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-04-18 15:55:35,271 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:55:35,271 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:55:35,272 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-04-18 15:55:35,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:55:35,273 INFO L85 PathProgramCache]: Analyzing trace with hash -954717838, now seen corresponding path program 1 times [2022-04-18 15:55:35,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:55:35,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014790238] [2022-04-18 15:55:35,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:55:35,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:55:35,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:55:35,325 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:55:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:55:35,354 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:55:35,358 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:55:35,358 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 33 remaining) [2022-04-18 15:55:35,358 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 33 remaining) [2022-04-18 15:55:35,359 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (30 of 33 remaining) [2022-04-18 15:55:35,359 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (29 of 33 remaining) [2022-04-18 15:55:35,360 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (28 of 33 remaining) [2022-04-18 15:55:35,360 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (27 of 33 remaining) [2022-04-18 15:55:35,360 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (26 of 33 remaining) [2022-04-18 15:55:35,360 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (25 of 33 remaining) [2022-04-18 15:55:35,361 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (24 of 33 remaining) [2022-04-18 15:55:35,361 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 33 remaining) [2022-04-18 15:55:35,361 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (22 of 33 remaining) [2022-04-18 15:55:35,361 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (21 of 33 remaining) [2022-04-18 15:55:35,361 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (20 of 33 remaining) [2022-04-18 15:55:35,362 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 33 remaining) [2022-04-18 15:55:35,362 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (18 of 33 remaining) [2022-04-18 15:55:35,362 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (17 of 33 remaining) [2022-04-18 15:55:35,366 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (16 of 33 remaining) [2022-04-18 15:55:35,366 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 33 remaining) [2022-04-18 15:55:35,367 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (14 of 33 remaining) [2022-04-18 15:55:35,367 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 33 remaining) [2022-04-18 15:55:35,367 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 33 remaining) [2022-04-18 15:55:35,367 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 33 remaining) [2022-04-18 15:55:35,368 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 33 remaining) [2022-04-18 15:55:35,369 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (9 of 33 remaining) [2022-04-18 15:55:35,369 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (8 of 33 remaining) [2022-04-18 15:55:35,369 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 33 remaining) [2022-04-18 15:55:35,369 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (6 of 33 remaining) [2022-04-18 15:55:35,369 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 33 remaining) [2022-04-18 15:55:35,371 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 33 remaining) [2022-04-18 15:55:35,371 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 33 remaining) [2022-04-18 15:55:35,371 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 33 remaining) [2022-04-18 15:55:35,371 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 33 remaining) [2022-04-18 15:55:35,372 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 33 remaining) [2022-04-18 15:55:35,372 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 15:55:35,372 INFO L719 BasicCegarLoop]: Path program histogram: [1] [2022-04-18 15:55:35,373 WARN L232 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:55:35,373 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-04-18 15:55:35,486 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 15:55:35,487 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:55:35,488 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=PETRI_NET, 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 15:55:35,488 INFO L341 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2022-04-18 15:55:35,491 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 370 places, 402 transitions, 836 flow [2022-04-18 15:55:35,602 INFO L129 PetriNetUnfolder]: 45/452 cut-off events. [2022-04-18 15:55:35,603 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-04-18 15:55:35,618 INFO L84 FinitePrefix]: Finished finitePrefix Result has 475 conditions, 452 events. 45/452 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1786 event pairs, 0 based on Foata normal form. 0/370 useless extension candidates. Maximal degree in co-relation 373. Up to 10 conditions per place. [2022-04-18 15:55:35,618 INFO L82 GeneralOperation]: Start removeDead. Operand has 370 places, 402 transitions, 836 flow [2022-04-18 15:55:35,627 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 370 places, 402 transitions, 836 flow [2022-04-18 15:55:35,643 INFO L129 PetriNetUnfolder]: 11/173 cut-off events. [2022-04-18 15:55:35,643 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-04-18 15:55:35,643 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:55:35,644 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:55:35,644 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2022-04-18 15:55:35,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:55:35,644 INFO L85 PathProgramCache]: Analyzing trace with hash 348524322, now seen corresponding path program 1 times [2022-04-18 15:55:35,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:55:35,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699923499] [2022-04-18 15:55:35,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:55:35,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:55:35,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:55:35,869 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 15:55:35,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:55:35,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699923499] [2022-04-18 15:55:35,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699923499] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:55:35,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:55:35,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 15:55:35,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830474356] [2022-04-18 15:55:35,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:55:35,881 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 15:55:35,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:55:35,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 15:55:35,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:55:35,922 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 402 [2022-04-18 15:55:35,929 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 402 transitions, 836 flow. Second operand has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 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 15:55:35,929 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:55:35,929 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 402 [2022-04-18 15:55:35,931 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand