./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/10_fmaxsym_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/10_fmaxsym_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 a11d0cba01cb66911cac56797cb36d325dc008752ffb55c25c965bd0644c21c3 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 15:55:31,313 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 15:55:31,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 15:55:31,346 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 15:55:31,347 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 15:55:31,348 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 15:55:31,349 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 15:55:31,351 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 15:55:31,353 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 15:55:31,354 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 15:55:31,355 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 15:55:31,356 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 15:55:31,356 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 15:55:31,357 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 15:55:31,358 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 15:55:31,359 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 15:55:31,360 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 15:55:31,361 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 15:55:31,363 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 15:55:31,365 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 15:55:31,367 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 15:55:31,368 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 15:55:31,369 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 15:55:31,371 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 15:55:31,377 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 15:55:31,383 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 15:55:31,387 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 15:55:31,387 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 15:55:31,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 15:55:31,389 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 15:55:31,390 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 15:55:31,390 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 15:55:31,390 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 15:55:31,391 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 15:55:31,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 15:55:31,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 15:55:31,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 15:55:31,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 15:55:31,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 15:55:31,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 15:55:31,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 15:55:31,396 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 15:55:31,396 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-04-18 15:55:31,421 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 15:55:31,422 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 15:55:31,422 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 15:55:31,423 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 15:55:31,423 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 15:55:31,423 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 15:55:31,424 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-18 15:55:31,424 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-18 15:55:31,424 INFO L138 SettingsManager]: * Use SBE=true [2022-04-18 15:55:31,425 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 15:55:31,426 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 15:55:31,426 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 15:55:31,426 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 15:55:31,426 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 15:55:31,426 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 15:55:31,427 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 15:55:31,427 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 15:55:31,427 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 15:55:31,427 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 15:55:31,427 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 15:55:31,427 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 15:55:31,428 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 15:55:31,428 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 15:55:31,428 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 15:55:31,428 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-18 15:55:31,429 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 15:55:31,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:55:31,429 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 15:55:31,429 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 15:55:31,429 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 15:55:31,430 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-18 15:55:31,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 15:55:31,430 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-18 15:55:31,430 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-18 15:55:31,430 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 15:55:31,431 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a11d0cba01cb66911cac56797cb36d325dc008752ffb55c25c965bd0644c21c3 [2022-04-18 15:55:31,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 15:55:31,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 15:55:31,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 15:55:31,697 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 15:55:31,703 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 15:55:31,705 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/10_fmaxsym_cas.i [2022-04-18 15:55:31,770 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69a0d36a4/765c630c3cbd41ec8f0826a7bb4af148/FLAGc7bec84e9 [2022-04-18 15:55:32,265 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 15:55:32,268 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/10_fmaxsym_cas.i [2022-04-18 15:55:32,297 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69a0d36a4/765c630c3cbd41ec8f0826a7bb4af148/FLAGc7bec84e9 [2022-04-18 15:55:32,795 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69a0d36a4/765c630c3cbd41ec8f0826a7bb4af148 [2022-04-18 15:55:32,808 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 15:55:32,809 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 15:55:32,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 15:55:32,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 15:55:32,814 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 15:55:32,814 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:55:32" (1/1) ... [2022-04-18 15:55:32,815 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e12421d 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 15:55:32,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:55:32" (1/1) ... [2022-04-18 15:55:32,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 15:55:32,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 15:55:33,124 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/10_fmaxsym_cas.i[30467,30480] [2022-04-18 15:55:33,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:55:33,148 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 15:55:33,222 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/10_fmaxsym_cas.i[30467,30480] [2022-04-18 15:55:33,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:55:33,265 INFO L208 MainTranslator]: Completed translation [2022-04-18 15:55:33,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:55:33 WrapperNode [2022-04-18 15:55:33,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 15:55:33,267 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 15:55:33,267 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 15:55:33,267 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 15:55:33,273 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 15:55:33,302 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 15:55:33,335 INFO L137 Inliner]: procedures = 170, calls = 32, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 142 [2022-04-18 15:55:33,336 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 15:55:33,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 15:55:33,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 15:55:33,337 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 15:55:33,345 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 15:55:33,346 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 15:55:33,362 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 15:55:33,363 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 15:55:33,377 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 15:55:33,381 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 15:55:33,383 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 15:55:33,385 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 15:55:33,390 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 15:55:33,395 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 15:55:33,395 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 15:55:33,396 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 15:55:33,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:55:33,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:55:33,437 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 15:55:33,453 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 15:55:33,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 15:55:33,477 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-04-18 15:55:33,477 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-04-18 15:55:33,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 15:55:33,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 15:55:33,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 15:55:33,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 15:55:33,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 15:55:33,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 15:55:33,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 15:55:33,479 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 15:55:33,605 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 15:55:33,606 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 15:55:33,923 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 15:55:34,059 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 15:55:34,060 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-04-18 15:55:34,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:55:34 BoogieIcfgContainer [2022-04-18 15:55:34,063 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 15:55:34,065 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 15:55:34,066 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 15:55:34,069 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 15:55:34,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:55:32" (1/3) ... [2022-04-18 15:55:34,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@109d09c1 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 15:55:34,070 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 15:55:34,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@109d09c1 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 15:55:34,071 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 15:55:34,072 INFO L111 eAbstractionObserver]: Analyzing ICFG 10_fmaxsym_cas.i [2022-04-18 15:55:34,079 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 15:55:34,080 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 15:55:34,080 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-04-18 15:55:34,080 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 15:55:34,150 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 15:55:34,208 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:55:34,216 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 15:55:34,216 INFO L341 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-04-18 15:55:34,230 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 117 places, 123 transitions, 251 flow [2022-04-18 15:55:34,280 INFO L129 PetriNetUnfolder]: 10/134 cut-off events. [2022-04-18 15:55:34,280 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:55:34,285 INFO L84 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 134 events. 10/134 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 138 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 97. Up to 4 conditions per place. [2022-04-18 15:55:34,286 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 123 transitions, 251 flow [2022-04-18 15:55:34,291 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 123 transitions, 251 flow [2022-04-18 15:55:34,312 INFO L129 PetriNetUnfolder]: 2/54 cut-off events. [2022-04-18 15:55:34,312 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:55:34,312 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:55:34,313 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 15:55:34,314 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 15:55:34,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:55:34,320 INFO L85 PathProgramCache]: Analyzing trace with hash -494952019, now seen corresponding path program 1 times [2022-04-18 15:55:34,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:55:34,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497666670] [2022-04-18 15:55:34,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:55:34,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:55:34,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:55:34,457 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:55:34,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:55:34,541 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:55:34,543 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:55:34,544 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-04-18 15:55:34,545 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2022-04-18 15:55:34,546 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2022-04-18 15:55:34,547 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2022-04-18 15:55:34,547 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2022-04-18 15:55:34,547 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2022-04-18 15:55:34,548 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2022-04-18 15:55:34,548 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2022-04-18 15:55:34,548 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2022-04-18 15:55:34,549 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2022-04-18 15:55:34,549 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2022-04-18 15:55:34,549 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2022-04-18 15:55:34,549 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2022-04-18 15:55:34,550 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2022-04-18 15:55:34,550 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2022-04-18 15:55:34,550 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2022-04-18 15:55:34,550 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2022-04-18 15:55:34,551 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 15:55:34,555 INFO L719 BasicCegarLoop]: Path program histogram: [1] [2022-04-18 15:55:34,556 WARN L232 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:55:34,557 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-04-18 15:55:34,625 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 15:55:34,638 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:55:34,639 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 15:55:34,640 INFO L341 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-04-18 15:55:34,645 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 196 places, 208 transitions, 428 flow [2022-04-18 15:55:34,731 INFO L129 PetriNetUnfolder]: 19/232 cut-off events. [2022-04-18 15:55:34,732 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-04-18 15:55:34,739 INFO L84 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 232 events. 19/232 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 504 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 181. Up to 6 conditions per place. [2022-04-18 15:55:34,739 INFO L82 GeneralOperation]: Start removeDead. Operand has 196 places, 208 transitions, 428 flow [2022-04-18 15:55:34,747 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 196 places, 208 transitions, 428 flow [2022-04-18 15:55:34,767 INFO L129 PetriNetUnfolder]: 4/84 cut-off events. [2022-04-18 15:55:34,767 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-04-18 15:55:34,767 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:55:34,768 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 15:55:34,768 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 15:55:34,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:55:34,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1230446344, now seen corresponding path program 1 times [2022-04-18 15:55:34,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:55:34,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221284100] [2022-04-18 15:55:34,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:55:34,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:55:34,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:55:34,829 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:55:34,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:55:34,875 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:55:34,876 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:55:34,876 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2022-04-18 15:55:34,876 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2022-04-18 15:55:34,877 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2022-04-18 15:55:34,877 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2022-04-18 15:55:34,877 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2022-04-18 15:55:34,877 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2022-04-18 15:55:34,878 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2022-04-18 15:55:34,878 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2022-04-18 15:55:34,879 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2022-04-18 15:55:34,880 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2022-04-18 15:55:34,882 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2022-04-18 15:55:34,883 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2022-04-18 15:55:34,883 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2022-04-18 15:55:34,884 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2022-04-18 15:55:34,884 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2022-04-18 15:55:34,884 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2022-04-18 15:55:34,885 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2022-04-18 15:55:34,885 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2022-04-18 15:55:34,886 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2022-04-18 15:55:34,892 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2022-04-18 15:55:34,893 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2022-04-18 15:55:34,893 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2022-04-18 15:55:34,893 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2022-04-18 15:55:34,894 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2022-04-18 15:55:34,894 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2022-04-18 15:55:34,894 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 15:55:34,895 INFO L719 BasicCegarLoop]: Path program histogram: [1] [2022-04-18 15:55:34,895 WARN L232 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:55:34,895 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-04-18 15:55:34,982 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 15:55:34,985 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:55:34,989 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 15:55:34,990 INFO L341 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2022-04-18 15:55:34,996 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 275 places, 293 transitions, 607 flow [2022-04-18 15:55:35,086 INFO L129 PetriNetUnfolder]: 28/330 cut-off events. [2022-04-18 15:55:35,087 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-04-18 15:55:35,091 INFO L84 FinitePrefix]: Finished finitePrefix Result has 346 conditions, 330 events. 28/330 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 985 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 265. Up to 8 conditions per place. [2022-04-18 15:55:35,092 INFO L82 GeneralOperation]: Start removeDead. Operand has 275 places, 293 transitions, 607 flow [2022-04-18 15:55:35,098 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 275 places, 293 transitions, 607 flow [2022-04-18 15:55:35,112 INFO L129 PetriNetUnfolder]: 7/122 cut-off events. [2022-04-18 15:55:35,113 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-04-18 15:55:35,113 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:55:35,113 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 15:55:35,113 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 15:55:35,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:55:35,114 INFO L85 PathProgramCache]: Analyzing trace with hash 663938636, now seen corresponding path program 1 times [2022-04-18 15:55:35,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:55:35,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653441949] [2022-04-18 15:55:35,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:55:35,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:55:35,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:55:35,164 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:55:35,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:55:35,206 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:55:35,210 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:55:35,210 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 33 remaining) [2022-04-18 15:55:35,211 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 33 remaining) [2022-04-18 15:55:35,211 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (30 of 33 remaining) [2022-04-18 15:55:35,211 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (29 of 33 remaining) [2022-04-18 15:55:35,212 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (28 of 33 remaining) [2022-04-18 15:55:35,212 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (27 of 33 remaining) [2022-04-18 15:55:35,212 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (26 of 33 remaining) [2022-04-18 15:55:35,212 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 33 remaining) [2022-04-18 15:55:35,212 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (24 of 33 remaining) [2022-04-18 15:55:35,213 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 33 remaining) [2022-04-18 15:55:35,213 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (22 of 33 remaining) [2022-04-18 15:55:35,213 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (21 of 33 remaining) [2022-04-18 15:55:35,213 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (20 of 33 remaining) [2022-04-18 15:55:35,213 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 33 remaining) [2022-04-18 15:55:35,214 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (18 of 33 remaining) [2022-04-18 15:55:35,214 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (17 of 33 remaining) [2022-04-18 15:55:35,214 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (16 of 33 remaining) [2022-04-18 15:55:35,214 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 33 remaining) [2022-04-18 15:55:35,214 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (14 of 33 remaining) [2022-04-18 15:55:35,215 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 33 remaining) [2022-04-18 15:55:35,215 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 33 remaining) [2022-04-18 15:55:35,216 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 33 remaining) [2022-04-18 15:55:35,216 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (10 of 33 remaining) [2022-04-18 15:55:35,217 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 33 remaining) [2022-04-18 15:55:35,217 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (8 of 33 remaining) [2022-04-18 15:55:35,217 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 33 remaining) [2022-04-18 15:55:35,217 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (6 of 33 remaining) [2022-04-18 15:55:35,218 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 33 remaining) [2022-04-18 15:55:35,219 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 33 remaining) [2022-04-18 15:55:35,219 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 33 remaining) [2022-04-18 15:55:35,219 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (2 of 33 remaining) [2022-04-18 15:55:35,220 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 33 remaining) [2022-04-18 15:55:35,220 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 33 remaining) [2022-04-18 15:55:35,220 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 15:55:35,220 INFO L719 BasicCegarLoop]: Path program histogram: [1] [2022-04-18 15:55:35,221 WARN L232 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:55:35,221 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-04-18 15:55:35,331 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 15:55:35,333 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:55:35,333 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 15:55:35,333 INFO L341 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2022-04-18 15:55:35,336 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 354 places, 378 transitions, 788 flow [2022-04-18 15:55:35,443 INFO L129 PetriNetUnfolder]: 37/428 cut-off events. [2022-04-18 15:55:35,443 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-04-18 15:55:35,452 INFO L84 FinitePrefix]: Finished finitePrefix Result has 451 conditions, 428 events. 37/428 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1505 event pairs, 0 based on Foata normal form. 0/354 useless extension candidates. Maximal degree in co-relation 349. Up to 10 conditions per place. [2022-04-18 15:55:35,453 INFO L82 GeneralOperation]: Start removeDead. Operand has 354 places, 378 transitions, 788 flow [2022-04-18 15:55:35,460 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 354 places, 378 transitions, 788 flow [2022-04-18 15:55:35,475 INFO L129 PetriNetUnfolder]: 9/158 cut-off events. [2022-04-18 15:55:35,475 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-04-18 15:55:35,475 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:55:35,475 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] [2022-04-18 15:55:35,476 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 15:55:35,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:55:35,476 INFO L85 PathProgramCache]: Analyzing trace with hash 737012547, now seen corresponding path program 1 times [2022-04-18 15:55:35,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:55:35,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971199150] [2022-04-18 15:55:35,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:55:35,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:55:35,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:55:35,737 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 15:55:35,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:55:35,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971199150] [2022-04-18 15:55:35,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971199150] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:55:35,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:55:35,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 15:55:35,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731975397] [2022-04-18 15:55:35,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:55:35,746 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 15:55:35,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:55:35,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 15:55:35,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:55:35,791 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 378 [2022-04-18 15:55:35,798 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 378 transitions, 788 flow. Second operand has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 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 15:55:35,798 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:55:35,798 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 378 [2022-04-18 15:55:35,799 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand