./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_82-list_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for data races 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_82-list_racefree.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 6ac894f5c6207d1329786eb676509b79ca36f8c33f880cc59ffa30652ab92765 --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 [2023-08-31 21:06:27,083 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 21:06:27,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 21:06:27,117 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 21:06:27,119 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 21:06:27,121 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 21:06:27,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 21:06:27,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 21:06:27,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 21:06:27,128 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 21:06:27,129 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 21:06:27,131 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 21:06:27,131 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 21:06:27,132 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 21:06:27,133 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 21:06:27,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 21:06:27,138 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 21:06:27,139 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 21:06:27,140 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 21:06:27,143 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 21:06:27,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 21:06:27,152 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 21:06:27,152 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 21:06:27,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 21:06:27,158 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 21:06:27,158 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 21:06:27,158 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 21:06:27,159 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 21:06:27,160 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 21:06:27,160 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 21:06:27,160 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 21:06:27,165 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 21:06:27,166 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 21:06:27,167 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 21:06:27,167 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 21:06:27,167 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 21:06:27,168 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 21:06:27,168 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 21:06:27,168 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 21:06:27,169 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 21:06:27,169 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 21:06:27,171 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-31 21:06:27,195 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 21:06:27,196 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 21:06:27,197 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 21:06:27,197 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 21:06:27,197 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 21:06:27,197 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 21:06:27,198 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 21:06:27,198 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 21:06:27,198 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 21:06:27,198 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 21:06:27,199 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 21:06:27,199 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 21:06:27,199 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 21:06:27,199 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 21:06:27,200 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 21:06:27,200 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 21:06:27,200 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 21:06:27,200 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 21:06:27,200 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-31 21:06:27,200 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 21:06:27,200 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 21:06:27,201 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 21:06:27,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 21:06:27,201 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 21:06:27,201 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 21:06:27,201 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 21:06:27,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 21:06:27,201 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 21:06:27,202 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 21:06:27,202 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 21:06:27,202 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 21:06:27,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 21:06:27,202 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 21:06:27,202 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 21:06:27,203 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 21:06:27,203 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 21:06:27,203 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 21:06:27,203 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ac894f5c6207d1329786eb676509b79ca36f8c33f880cc59ffa30652ab92765 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 21:06:27,453 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 21:06:27,480 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 21:06:27,481 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 21:06:27,482 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 21:06:27,482 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 21:06:27,483 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_82-list_racefree.i [2023-08-31 21:06:28,632 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 21:06:28,931 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 21:06:28,932 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_82-list_racefree.i [2023-08-31 21:06:28,951 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/decaf1d47/5d05b9ef6af94c0a955d58eb7f5fc2f1/FLAGe127be243 [2023-08-31 21:06:28,963 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/decaf1d47/5d05b9ef6af94c0a955d58eb7f5fc2f1 [2023-08-31 21:06:28,965 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 21:06:28,966 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 21:06:28,968 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 21:06:28,968 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 21:06:28,971 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 21:06:28,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 09:06:28" (1/1) ... [2023-08-31 21:06:28,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22065052 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:06:28, skipping insertion in model container [2023-08-31 21:06:28,973 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 09:06:28" (1/1) ... [2023-08-31 21:06:28,978 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 21:06:29,018 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 21:06:29,308 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_82-list_racefree.i[47038,47051] [2023-08-31 21:06:29,364 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 21:06:29,375 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 21:06:29,419 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_82-list_racefree.i[47038,47051] [2023-08-31 21:06:29,435 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 21:06:29,491 INFO L208 MainTranslator]: Completed translation [2023-08-31 21:06:29,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:06:29 WrapperNode [2023-08-31 21:06:29,491 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 21:06:29,492 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 21:06:29,493 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 21:06:29,493 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 21:06:29,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:06:29" (1/1) ... [2023-08-31 21:06:29,526 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:06:29" (1/1) ... [2023-08-31 21:06:29,567 INFO L138 Inliner]: procedures = 278, calls = 61, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 314 [2023-08-31 21:06:29,570 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 21:06:29,571 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 21:06:29,572 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 21:06:29,572 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 21:06:29,578 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:06:29" (1/1) ... [2023-08-31 21:06:29,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:06:29" (1/1) ... [2023-08-31 21:06:29,592 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:06:29" (1/1) ... [2023-08-31 21:06:29,593 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:06:29" (1/1) ... [2023-08-31 21:06:29,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:06:29" (1/1) ... [2023-08-31 21:06:29,626 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:06:29" (1/1) ... [2023-08-31 21:06:29,630 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:06:29" (1/1) ... [2023-08-31 21:06:29,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:06:29" (1/1) ... [2023-08-31 21:06:29,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 21:06:29,636 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 21:06:29,636 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 21:06:29,636 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 21:06:29,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:06:29" (1/1) ... [2023-08-31 21:06:29,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 21:06:29,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 21:06:29,659 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) [2023-08-31 21:06:29,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 21:06:29,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-31 21:06:29,686 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-31 21:06:29,686 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-31 21:06:29,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 21:06:29,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 21:06:29,687 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-31 21:06:29,687 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-31 21:06:29,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 21:06:29,687 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-31 21:06:29,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-31 21:06:29,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 21:06:29,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-31 21:06:29,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 21:06:29,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 21:06:29,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 21:06:29,689 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 21:06:29,684 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 [2023-08-31 21:06:29,786 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 21:06:29,787 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 21:06:30,196 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 21:06:30,207 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 21:06:30,207 INFO L302 CfgBuilder]: Removed 15 assume(true) statements. [2023-08-31 21:06:30,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 09:06:30 BoogieIcfgContainer [2023-08-31 21:06:30,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 21:06:30,213 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 21:06:30,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 21:06:30,215 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 21:06:30,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 09:06:28" (1/3) ... [2023-08-31 21:06:30,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52eb87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 09:06:30, skipping insertion in model container [2023-08-31 21:06:30,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:06:29" (2/3) ... [2023-08-31 21:06:30,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52eb87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 09:06:30, skipping insertion in model container [2023-08-31 21:06:30,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 09:06:30" (3/3) ... [2023-08-31 21:06:30,216 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_82-list_racefree.i [2023-08-31 21:06:30,221 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 21:06:30,229 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 21:06:30,229 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-08-31 21:06:30,229 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 21:06:30,330 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-31 21:06:30,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 317 places, 335 transitions, 692 flow [2023-08-31 21:06:30,491 INFO L130 PetriNetUnfolder]: 52/611 cut-off events. [2023-08-31 21:06:30,491 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2023-08-31 21:06:30,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 631 conditions, 611 events. 52/611 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2743 event pairs, 0 based on Foata normal form. 0/517 useless extension candidates. Maximal degree in co-relation 305. Up to 8 conditions per place. [2023-08-31 21:06:30,501 INFO L82 GeneralOperation]: Start removeDead. Operand has 317 places, 335 transitions, 692 flow [2023-08-31 21:06:30,507 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 313 places, 329 transitions, 674 flow [2023-08-31 21:06:30,510 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 21:06:30,516 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 313 places, 329 transitions, 674 flow [2023-08-31 21:06:30,518 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 313 places, 329 transitions, 674 flow [2023-08-31 21:06:30,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 313 places, 329 transitions, 674 flow [2023-08-31 21:06:30,584 INFO L130 PetriNetUnfolder]: 48/595 cut-off events. [2023-08-31 21:06:30,584 INFO L131 PetriNetUnfolder]: For 4/8 co-relation queries the response was YES. [2023-08-31 21:06:30,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 611 conditions, 595 events. 48/595 cut-off events. For 4/8 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2490 event pairs, 0 based on Foata normal form. 0/505 useless extension candidates. Maximal degree in co-relation 293. Up to 8 conditions per place. [2023-08-31 21:06:30,614 INFO L119 LiptonReduction]: Number of co-enabled transitions 38448 [2023-08-31 21:06:48,992 WARN L222 SmtUtils]: Spent 5.79s on a formula simplification. DAG size of input: 207 DAG size of output: 205 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 21:06:57,040 WARN L222 SmtUtils]: Spent 5.56s on a formula simplification. DAG size of input: 207 DAG size of output: 205 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 21:06:59,859 INFO L134 LiptonReduction]: Checked pairs total: 190284 [2023-08-31 21:06:59,860 INFO L136 LiptonReduction]: Total number of compositions: 199 [2023-08-31 21:06:59,868 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 21:06:59,886 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;@272785ec, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 21:06:59,887 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-31 21:06:59,890 INFO L130 PetriNetUnfolder]: 0/29 cut-off events. [2023-08-31 21:06:59,890 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 21:06:59,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:06:59,891 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-31 21:06:59,891 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 21:06:59,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:06:59,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1003962434, now seen corresponding path program 1 times [2023-08-31 21:06:59,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:06:59,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540701510] [2023-08-31 21:06:59,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:06:59,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:07:00,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 21:07:00,035 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 21:07:00,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 21:07:00,113 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 21:07:00,114 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 21:07:00,115 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-31 21:07:00,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-31 21:07:00,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 21:07:00,117 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 21:07:00,118 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-31 21:07:00,119 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 21:07:00,119 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-31 21:07:00,201 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-31 21:07:00,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 508 places, 541 transitions, 1130 flow [2023-08-31 21:07:00,578 INFO L130 PetriNetUnfolder]: 191/1781 cut-off events. [2023-08-31 21:07:00,578 INFO L131 PetriNetUnfolder]: For 72/120 co-relation queries the response was YES. [2023-08-31 21:07:00,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1878 conditions, 1781 events. 191/1781 cut-off events. For 72/120 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 12321 event pairs, 2 based on Foata normal form. 0/1493 useless extension candidates. Maximal degree in co-relation 1108. Up to 32 conditions per place. [2023-08-31 21:07:00,600 INFO L82 GeneralOperation]: Start removeDead. Operand has 508 places, 541 transitions, 1130 flow [2023-08-31 21:07:00,610 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 504 places, 537 transitions, 1122 flow [2023-08-31 21:07:00,610 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 21:07:00,610 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 504 places, 537 transitions, 1122 flow [2023-08-31 21:07:00,611 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 504 places, 537 transitions, 1122 flow [2023-08-31 21:07:00,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 504 places, 537 transitions, 1122 flow [2023-08-31 21:07:01,080 INFO L130 PetriNetUnfolder]: 191/1777 cut-off events. [2023-08-31 21:07:01,081 INFO L131 PetriNetUnfolder]: For 72/120 co-relation queries the response was YES. [2023-08-31 21:07:01,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1874 conditions, 1777 events. 191/1777 cut-off events. For 72/120 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 12324 event pairs, 2 based on Foata normal form. 0/1493 useless extension candidates. Maximal degree in co-relation 1104. Up to 32 conditions per place. [2023-08-31 21:07:01,216 INFO L119 LiptonReduction]: Number of co-enabled transitions 163312 [2023-08-31 21:07:17,843 INFO L134 LiptonReduction]: Checked pairs total: 891694 [2023-08-31 21:07:17,843 INFO L136 LiptonReduction]: Total number of compositions: 286 [2023-08-31 21:07:17,845 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 21:07:17,845 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;@272785ec, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 21:07:17,845 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-31 21:07:17,852 INFO L130 PetriNetUnfolder]: 3/109 cut-off events. [2023-08-31 21:07:17,853 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-31 21:07:17,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:07:17,853 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-31 21:07:17,853 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 21:07:17,853 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:07:17,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1039441446, now seen corresponding path program 1 times [2023-08-31 21:07:17,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:07:17,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284375317] [2023-08-31 21:07:17,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:07:17,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:07:17,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 21:07:17,892 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 21:07:17,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 21:07:17,925 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 21:07:17,925 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 21:07:17,925 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-31 21:07:17,926 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-31 21:07:17,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 21:07:17,926 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 21:07:17,926 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-31 21:07:17,926 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 21:07:17,926 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-31 21:07:18,052 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-31 21:07:18,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 699 places, 747 transitions, 1572 flow [2023-08-31 21:07:19,508 INFO L130 PetriNetUnfolder]: 664/4809 cut-off events. [2023-08-31 21:07:19,508 INFO L131 PetriNetUnfolder]: For 419/557 co-relation queries the response was YES. [2023-08-31 21:07:19,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5260 conditions, 4809 events. 664/4809 cut-off events. For 419/557 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 40893 event pairs, 52 based on Foata normal form. 0/4050 useless extension candidates. Maximal degree in co-relation 3100. Up to 192 conditions per place. [2023-08-31 21:07:19,631 INFO L82 GeneralOperation]: Start removeDead. Operand has 699 places, 747 transitions, 1572 flow [2023-08-31 21:07:19,668 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 695 places, 743 transitions, 1564 flow [2023-08-31 21:07:19,668 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 21:07:19,669 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 695 places, 743 transitions, 1564 flow [2023-08-31 21:07:19,669 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 695 places, 743 transitions, 1564 flow [2023-08-31 21:07:19,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 695 places, 743 transitions, 1564 flow [2023-08-31 21:07:21,283 INFO L130 PetriNetUnfolder]: 664/4805 cut-off events. [2023-08-31 21:07:21,283 INFO L131 PetriNetUnfolder]: For 419/557 co-relation queries the response was YES. [2023-08-31 21:07:21,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5256 conditions, 4805 events. 664/4805 cut-off events. For 419/557 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 41263 event pairs, 52 based on Foata normal form. 0/4050 useless extension candidates. Maximal degree in co-relation 3096. Up to 192 conditions per place. [2023-08-31 21:07:21,798 INFO L119 LiptonReduction]: Number of co-enabled transitions 370752 [2023-08-31 21:07:45,939 INFO L134 LiptonReduction]: Checked pairs total: 2067166 [2023-08-31 21:07:45,939 INFO L136 LiptonReduction]: Total number of compositions: 387 [2023-08-31 21:07:45,941 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 21:07:45,941 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;@272785ec, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 21:07:45,942 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-31 21:07:45,953 INFO L130 PetriNetUnfolder]: 7/212 cut-off events. [2023-08-31 21:07:45,953 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-08-31 21:07:45,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:07:45,953 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-31 21:07:45,953 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 21:07:45,954 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:07:45,954 INFO L85 PathProgramCache]: Analyzing trace with hash -837838087, now seen corresponding path program 1 times [2023-08-31 21:07:45,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:07:45,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510344946] [2023-08-31 21:07:45,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:07:45,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:07:45,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 21:07:45,981 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 21:07:45,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 21:07:45,996 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 21:07:45,996 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 21:07:45,997 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-31 21:07:45,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-31 21:07:45,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 21:07:45,997 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 21:07:45,997 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-31 21:07:45,998 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 21:07:45,998 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-31 21:07:46,074 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2023-08-31 21:07:46,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 890 places, 953 transitions, 2018 flow [2023-08-31 21:07:52,847 INFO L130 PetriNetUnfolder]: 2659/14663 cut-off events. [2023-08-31 21:07:52,847 INFO L131 PetriNetUnfolder]: For 2144/2414 co-relation queries the response was YES. [2023-08-31 21:07:53,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16828 conditions, 14663 events. 2659/14663 cut-off events. For 2144/2414 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 149637 event pairs, 626 based on Foata normal form. 0/12517 useless extension candidates. Maximal degree in co-relation 9197. Up to 1024 conditions per place. [2023-08-31 21:07:53,608 INFO L82 GeneralOperation]: Start removeDead. Operand has 890 places, 953 transitions, 2018 flow [2023-08-31 21:07:53,781 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 886 places, 949 transitions, 2010 flow [2023-08-31 21:07:53,781 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 21:07:53,782 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 886 places, 949 transitions, 2010 flow [2023-08-31 21:07:53,782 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 886 places, 949 transitions, 2010 flow [2023-08-31 21:07:53,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 886 places, 949 transitions, 2010 flow [2023-08-31 21:08:00,177 INFO L130 PetriNetUnfolder]: 2659/14659 cut-off events. [2023-08-31 21:08:00,177 INFO L131 PetriNetUnfolder]: For 2144/2414 co-relation queries the response was YES. [2023-08-31 21:08:00,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16824 conditions, 14659 events. 2659/14659 cut-off events. For 2144/2414 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 149398 event pairs, 626 based on Foata normal form. 0/12517 useless extension candidates. Maximal degree in co-relation 9193. Up to 1024 conditions per place. [2023-08-31 21:08:02,445 INFO L119 LiptonReduction]: Number of co-enabled transitions 662048 [2023-08-31 21:08:29,604 INFO L134 LiptonReduction]: Checked pairs total: 3708564 [2023-08-31 21:08:29,604 INFO L136 LiptonReduction]: Total number of compositions: 479 [2023-08-31 21:08:29,606 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 21:08:29,607 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;@272785ec, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 21:08:29,607 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-31 21:08:29,629 INFO L130 PetriNetUnfolder]: 24/427 cut-off events. [2023-08-31 21:08:29,629 INFO L131 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2023-08-31 21:08:29,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:08:29,630 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-31 21:08:29,630 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 21:08:29,630 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:08:29,630 INFO L85 PathProgramCache]: Analyzing trace with hash -19006151, now seen corresponding path program 1 times [2023-08-31 21:08:29,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:08:29,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085114723] [2023-08-31 21:08:29,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:08:29,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:08:29,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 21:08:29,669 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 21:08:29,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 21:08:29,717 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 21:08:29,720 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 21:08:29,720 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-31 21:08:29,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-31 21:08:29,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 21:08:29,721 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 21:08:29,721 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-31 21:08:29,721 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 21:08:29,722 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-31 21:08:29,797 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2023-08-31 21:08:29,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1081 places, 1159 transitions, 2468 flow [2023-08-31 21:09:01,158 INFO L130 PetriNetUnfolder]: 11792/52079 cut-off events. [2023-08-31 21:09:01,164 INFO L131 PetriNetUnfolder]: For 10450/10883 co-relation queries the response was YES. [2023-08-31 21:09:05,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62505 conditions, 52079 events. 11792/52079 cut-off events. For 10450/10883 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 634835 event pairs, 4296 based on Foata normal form. 0/45042 useless extension candidates. Maximal degree in co-relation 31930. Up to 5120 conditions per place. [2023-08-31 21:09:05,194 INFO L82 GeneralOperation]: Start removeDead. Operand has 1081 places, 1159 transitions, 2468 flow [2023-08-31 21:09:06,168 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1077 places, 1155 transitions, 2460 flow [2023-08-31 21:09:06,168 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 21:09:06,168 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1077 places, 1155 transitions, 2460 flow [2023-08-31 21:09:06,168 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1077 places, 1155 transitions, 2460 flow [2023-08-31 21:09:06,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1077 places, 1155 transitions, 2460 flow [2023-08-31 21:09:35,451 INFO L130 PetriNetUnfolder]: 11792/52075 cut-off events. [2023-08-31 21:09:35,451 INFO L131 PetriNetUnfolder]: For 10450/10883 co-relation queries the response was YES. [2023-08-31 21:09:39,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62501 conditions, 52075 events. 11792/52075 cut-off events. For 10450/10883 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 633779 event pairs, 4296 based on Foata normal form. 0/45042 useless extension candidates. Maximal degree in co-relation 31926. Up to 5120 conditions per place. [2023-08-31 21:09:47,902 INFO L119 LiptonReduction]: Number of co-enabled transitions 1037200 [2023-08-31 21:10:14,080 INFO L134 LiptonReduction]: Checked pairs total: 6510643 [2023-08-31 21:10:14,081 INFO L136 LiptonReduction]: Total number of compositions: 577 [2023-08-31 21:10:14,082 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 21:10:14,088 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;@272785ec, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 21:10:14,089 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-31 21:10:14,136 INFO L130 PetriNetUnfolder]: 52/742 cut-off events. [2023-08-31 21:10:14,137 INFO L131 PetriNetUnfolder]: For 85/85 co-relation queries the response was YES. [2023-08-31 21:10:14,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:10:14,137 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 21:10:14,137 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 21:10:14,137 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:10:14,138 INFO L85 PathProgramCache]: Analyzing trace with hash 634911578, now seen corresponding path program 1 times [2023-08-31 21:10:14,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:10:14,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042423885] [2023-08-31 21:10:14,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:10:14,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:10:14,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 21:10:14,173 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 21:10:14,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 21:10:14,197 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 21:10:14,198 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 21:10:14,198 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-31 21:10:14,198 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-31 21:10:14,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 21:10:14,201 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 21:10:14,202 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-31 21:10:14,202 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 21:10:14,202 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-31 21:10:14,293 INFO L144 ThreadInstanceAdder]: Constructed 24 joinOtherThreadTransitions. [2023-08-31 21:10:14,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1272 places, 1365 transitions, 2922 flow