./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_84-list2_racing2.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d 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 ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_84-list2_racing2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f70125267ee7251a74a40ef1ba0ea3ced14d0fe45e7a9ea5a666e1eecab0c01c --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 11:13:45,464 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 11:13:45,466 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 11:13:45,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 11:13:45,512 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 11:13:45,515 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 11:13:45,517 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 11:13:45,520 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 11:13:45,522 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 11:13:45,526 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 11:13:45,527 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 11:13:45,530 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 11:13:45,530 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 11:13:45,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 11:13:45,533 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 11:13:45,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 11:13:45,539 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 11:13:45,541 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 11:13:45,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 11:13:45,547 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 11:13:45,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 11:13:45,551 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 11:13:45,552 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 11:13:45,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 11:13:45,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 11:13:45,560 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 11:13:45,560 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 11:13:45,562 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 11:13:45,563 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 11:13:45,564 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 11:13:45,564 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 11:13:45,570 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 11:13:45,571 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 11:13:45,572 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 11:13:45,573 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 11:13:45,573 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 11:13:45,574 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 11:13:45,574 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 11:13:45,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 11:13:45,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 11:13:45,575 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 11:13:45,577 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 11:13:45,612 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 11:13:45,613 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 11:13:45,614 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 11:13:45,614 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 11:13:45,615 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 11:13:45,615 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 11:13:45,616 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 11:13:45,616 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 11:13:45,616 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 11:13:45,616 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 11:13:45,617 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 11:13:45,617 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 11:13:45,617 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 11:13:45,618 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 11:13:45,618 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 11:13:45,618 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 11:13:45,618 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 11:13:45,618 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 11:13:45,619 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 11:13:45,619 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 11:13:45,619 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 11:13:45,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 11:13:45,619 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 11:13:45,620 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 11:13:45,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 11:13:45,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 11:13:45,620 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 11:13:45,620 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 11:13:45,621 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 11:13:45,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 11:13:45,621 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 11:13:45,621 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 11:13:45,621 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 11:13:45,622 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 11:13:45,622 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 11:13:45,622 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f70125267ee7251a74a40ef1ba0ea3ced14d0fe45e7a9ea5a666e1eecab0c01c Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 11:13:45,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 11:13:45,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 11:13:45,939 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 11:13:45,940 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 11:13:45,944 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 11:13:45,946 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_84-list2_racing2.i [2023-09-01 11:13:47,121 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 11:13:47,415 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 11:13:47,419 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_84-list2_racing2.i [2023-09-01 11:13:47,434 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e785b4e38/a580d20f8c32457fa94d323cd98d3f28/FLAGe292c92af [2023-09-01 11:13:47,450 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e785b4e38/a580d20f8c32457fa94d323cd98d3f28 [2023-09-01 11:13:47,452 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 11:13:47,453 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 11:13:47,454 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 11:13:47,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 11:13:47,459 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 11:13:47,460 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 11:13:47" (1/1) ... [2023-09-01 11:13:47,461 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fce7a5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:13:47, skipping insertion in model container [2023-09-01 11:13:47,461 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 11:13:47" (1/1) ... [2023-09-01 11:13:47,467 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 11:13:47,524 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 11:13:47,894 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_84-list2_racing2.i[47038,47051] [2023-09-01 11:13:47,950 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 11:13:47,967 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 11:13:48,007 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_84-list2_racing2.i[47038,47051] [2023-09-01 11:13:48,038 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 11:13:48,126 INFO L208 MainTranslator]: Completed translation [2023-09-01 11:13:48,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:13:48 WrapperNode [2023-09-01 11:13:48,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 11:13:48,127 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 11:13:48,130 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 11:13:48,140 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 11:13:48,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:13:48" (1/1) ... [2023-09-01 11:13:48,174 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:13:48" (1/1) ... [2023-09-01 11:13:48,210 INFO L138 Inliner]: procedures = 279, calls = 88, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 384 [2023-09-01 11:13:48,210 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 11:13:48,211 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 11:13:48,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 11:13:48,211 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 11:13:48,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:13:48" (1/1) ... [2023-09-01 11:13:48,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:13:48" (1/1) ... [2023-09-01 11:13:48,224 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:13:48" (1/1) ... [2023-09-01 11:13:48,224 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:13:48" (1/1) ... [2023-09-01 11:13:48,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:13:48" (1/1) ... [2023-09-01 11:13:48,250 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:13:48" (1/1) ... [2023-09-01 11:13:48,252 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:13:48" (1/1) ... [2023-09-01 11:13:48,254 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:13:48" (1/1) ... [2023-09-01 11:13:48,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 11:13:48,258 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 11:13:48,258 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 11:13:48,259 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 11:13:48,259 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:13:48" (1/1) ... [2023-09-01 11:13:48,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 11:13:48,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 11:13:48,294 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) [2023-09-01 11:13:48,298 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 [2023-09-01 11:13:48,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 11:13:48,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-09-01 11:13:48,322 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-09-01 11:13:48,322 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-09-01 11:13:48,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 11:13:48,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 11:13:48,323 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-09-01 11:13:48,323 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-09-01 11:13:48,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 11:13:48,323 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 11:13:48,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 11:13:48,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 11:13:48,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-09-01 11:13:48,324 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2023-09-01 11:13:48,324 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2023-09-01 11:13:48,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 11:13:48,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 11:13:48,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 11:13:48,326 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 11:13:48,498 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 11:13:48,500 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 11:13:48,975 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 11:13:48,985 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 11:13:48,985 INFO L302 CfgBuilder]: Removed 29 assume(true) statements. [2023-09-01 11:13:48,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 11:13:48 BoogieIcfgContainer [2023-09-01 11:13:48,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 11:13:48,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 11:13:48,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 11:13:48,992 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 11:13:48,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 11:13:47" (1/3) ... [2023-09-01 11:13:48,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b88d15a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 11:13:48, skipping insertion in model container [2023-09-01 11:13:48,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:13:48" (2/3) ... [2023-09-01 11:13:48,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b88d15a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 11:13:48, skipping insertion in model container [2023-09-01 11:13:48,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 11:13:48" (3/3) ... [2023-09-01 11:13:48,995 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_84-list2_racing2.i [2023-09-01 11:13:49,002 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 11:13:49,010 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 11:13:49,011 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-09-01 11:13:49,011 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 11:13:49,131 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 11:13:49,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 352 places, 393 transitions, 828 flow [2023-09-01 11:13:49,580 INFO L130 PetriNetUnfolder]: 188/1415 cut-off events. [2023-09-01 11:13:49,580 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-09-01 11:13:49,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1476 conditions, 1415 events. 188/1415 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9390 event pairs, 0 based on Foata normal form. 0/1219 useless extension candidates. Maximal degree in co-relation 729. Up to 16 conditions per place. [2023-09-01 11:13:49,605 INFO L82 GeneralOperation]: Start removeDead. Operand has 352 places, 393 transitions, 828 flow [2023-09-01 11:13:49,623 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 352 places, 393 transitions, 828 flow [2023-09-01 11:13:49,627 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:13:49,646 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 352 places, 393 transitions, 828 flow [2023-09-01 11:13:49,651 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 352 places, 393 transitions, 828 flow [2023-09-01 11:13:49,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 352 places, 393 transitions, 828 flow [2023-09-01 11:13:49,917 INFO L130 PetriNetUnfolder]: 188/1415 cut-off events. [2023-09-01 11:13:49,918 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-09-01 11:13:49,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1476 conditions, 1415 events. 188/1415 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9390 event pairs, 0 based on Foata normal form. 0/1219 useless extension candidates. Maximal degree in co-relation 729. Up to 16 conditions per place. [2023-09-01 11:13:49,990 INFO L119 LiptonReduction]: Number of co-enabled transitions 68634 [2023-09-01 11:14:07,376 INFO L134 LiptonReduction]: Checked pairs total: 136367 [2023-09-01 11:14:07,377 INFO L136 LiptonReduction]: Total number of compositions: 314 [2023-09-01 11:14:07,390 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:14:07,395 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@306ece3b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:14:07,396 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-09-01 11:14:07,401 INFO L130 PetriNetUnfolder]: 2/21 cut-off events. [2023-09-01 11:14:07,401 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 11:14:07,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:14:07,402 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 11:14:07,403 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 11:14:07,407 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:14:07,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1944719290, now seen corresponding path program 1 times [2023-09-01 11:14:07,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:14:07,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530402501] [2023-09-01 11:14:07,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:14:07,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:14:07,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:14:07,624 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:14:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:14:07,713 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:14:07,717 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:14:07,718 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-09-01 11:14:07,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-09-01 11:14:07,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-09-01 11:14:07,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 11:14:07,725 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:14:07,731 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-09-01 11:14:07,732 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:14:07,732 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 11:14:07,839 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-09-01 11:14:07,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 534 places, 608 transitions, 1306 flow [2023-09-01 11:14:10,012 INFO L130 PetriNetUnfolder]: 1211/6644 cut-off events. [2023-09-01 11:14:10,013 INFO L131 PetriNetUnfolder]: For 602/602 co-relation queries the response was YES. [2023-09-01 11:14:10,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7318 conditions, 6644 events. 1211/6644 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 60780 event pairs, 22 based on Foata normal form. 0/5717 useless extension candidates. Maximal degree in co-relation 4214. Up to 192 conditions per place. [2023-09-01 11:14:10,233 INFO L82 GeneralOperation]: Start removeDead. Operand has 534 places, 608 transitions, 1306 flow [2023-09-01 11:14:10,314 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 534 places, 608 transitions, 1306 flow [2023-09-01 11:14:10,315 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:14:10,315 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 534 places, 608 transitions, 1306 flow [2023-09-01 11:14:10,315 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 534 places, 608 transitions, 1306 flow [2023-09-01 11:14:10,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 534 places, 608 transitions, 1306 flow [2023-09-01 11:14:12,024 INFO L130 PetriNetUnfolder]: 1211/6644 cut-off events. [2023-09-01 11:14:12,025 INFO L131 PetriNetUnfolder]: For 602/602 co-relation queries the response was YES. [2023-09-01 11:14:12,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7318 conditions, 6644 events. 1211/6644 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 60780 event pairs, 22 based on Foata normal form. 0/5717 useless extension candidates. Maximal degree in co-relation 4214. Up to 192 conditions per place. [2023-09-01 11:14:12,560 INFO L119 LiptonReduction]: Number of co-enabled transitions 227968 [2023-09-01 11:14:29,613 INFO L134 LiptonReduction]: Checked pairs total: 466123 [2023-09-01 11:14:29,613 INFO L136 LiptonReduction]: Total number of compositions: 471 [2023-09-01 11:14:29,615 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:14:29,616 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@306ece3b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:14:29,616 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-09-01 11:14:29,627 INFO L130 PetriNetUnfolder]: 22/127 cut-off events. [2023-09-01 11:14:29,628 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 11:14:29,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:14:29,628 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 11:14:29,629 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 11:14:29,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:14:29,629 INFO L85 PathProgramCache]: Analyzing trace with hash 675183404, now seen corresponding path program 1 times [2023-09-01 11:14:29,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:14:29,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784953639] [2023-09-01 11:14:29,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:14:29,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:14:29,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:14:29,699 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:14:29,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:14:29,757 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:14:29,757 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:14:29,758 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-09-01 11:14:29,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-09-01 11:14:29,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-09-01 11:14:29,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 11:14:29,762 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:14:29,763 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-09-01 11:14:29,763 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:14:29,763 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 11:14:29,851 INFO L144 ThreadInstanceAdder]: Constructed 27 joinOtherThreadTransitions. [2023-09-01 11:14:29,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 716 places, 823 transitions, 1790 flow [2023-09-01 11:14:44,815 INFO L130 PetriNetUnfolder]: 9176/33999 cut-off events. [2023-09-01 11:14:44,816 INFO L131 PetriNetUnfolder]: For 7059/7059 co-relation queries the response was YES. [2023-09-01 11:14:46,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41173 conditions, 33999 events. 9176/33999 cut-off events. For 7059/7059 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 371707 event pairs, 1024 based on Foata normal form. 0/29607 useless extension candidates. Maximal degree in co-relation 22167. Up to 2304 conditions per place. [2023-09-01 11:14:46,744 INFO L82 GeneralOperation]: Start removeDead. Operand has 716 places, 823 transitions, 1790 flow [2023-09-01 11:14:47,984 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 716 places, 823 transitions, 1790 flow [2023-09-01 11:14:47,984 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:14:47,985 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 716 places, 823 transitions, 1790 flow [2023-09-01 11:14:47,985 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 716 places, 823 transitions, 1790 flow [2023-09-01 11:14:47,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 716 places, 823 transitions, 1790 flow [2023-09-01 11:15:02,438 INFO L130 PetriNetUnfolder]: 9176/33999 cut-off events. [2023-09-01 11:15:02,438 INFO L131 PetriNetUnfolder]: For 7059/7059 co-relation queries the response was YES. [2023-09-01 11:15:04,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41173 conditions, 33999 events. 9176/33999 cut-off events. For 7059/7059 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 371707 event pairs, 1024 based on Foata normal form. 0/29607 useless extension candidates. Maximal degree in co-relation 22167. Up to 2304 conditions per place. [2023-09-01 11:15:07,911 INFO L119 LiptonReduction]: Number of co-enabled transitions 478002 [2023-09-01 11:15:27,323 INFO L134 LiptonReduction]: Checked pairs total: 1018535 [2023-09-01 11:15:27,323 INFO L136 LiptonReduction]: Total number of compositions: 633 [2023-09-01 11:15:27,325 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:15:27,327 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@306ece3b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:15:27,327 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-09-01 11:15:27,353 INFO L130 PetriNetUnfolder]: 90/379 cut-off events. [2023-09-01 11:15:27,353 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-09-01 11:15:27,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:15:27,354 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 11:15:27,354 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 11:15:27,354 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:15:27,354 INFO L85 PathProgramCache]: Analyzing trace with hash -551838712, now seen corresponding path program 1 times [2023-09-01 11:15:27,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:15:27,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195157507] [2023-09-01 11:15:27,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:15:27,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:15:27,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:15:27,415 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:15:27,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:15:27,440 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:15:27,441 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:15:27,441 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-09-01 11:15:27,441 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-09-01 11:15:27,441 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-09-01 11:15:27,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 11:15:27,442 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:15:27,442 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-09-01 11:15:27,442 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:15:27,442 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 11:15:27,529 INFO L144 ThreadInstanceAdder]: Constructed 36 joinOtherThreadTransitions. [2023-09-01 11:15:27,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 898 places, 1038 transitions, 2280 flow