./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_09-ptrmunge_racing.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_09-ptrmunge_racing.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 7b88fee59ad03447f68c116aa52c40e006cc633d8116aa4d446048afd18fa64f --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 20:44:44,749 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 20:44:44,751 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 20:44:44,787 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 20:44:44,787 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 20:44:44,791 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 20:44:44,792 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 20:44:44,795 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 20:44:44,797 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 20:44:44,803 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 20:44:44,804 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 20:44:44,807 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 20:44:44,807 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 20:44:44,809 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 20:44:44,810 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 20:44:44,812 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 20:44:44,815 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 20:44:44,816 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 20:44:44,818 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 20:44:44,826 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 20:44:44,830 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 20:44:44,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 20:44:44,835 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 20:44:44,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 20:44:44,839 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 20:44:44,840 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 20:44:44,840 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 20:44:44,841 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 20:44:44,842 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 20:44:44,843 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 20:44:44,843 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 20:44:44,844 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 20:44:44,845 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 20:44:44,846 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 20:44:44,847 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 20:44:44,847 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 20:44:44,848 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 20:44:44,848 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 20:44:44,848 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 20:44:44,849 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 20:44:44,850 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 20:44:44,851 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-31 20:44:44,887 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 20:44:44,887 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 20:44:44,888 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 20:44:44,889 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 20:44:44,889 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 20:44:44,890 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 20:44:44,890 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 20:44:44,890 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 20:44:44,890 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 20:44:44,891 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 20:44:44,891 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 20:44:44,892 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 20:44:44,892 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 20:44:44,892 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 20:44:44,892 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 20:44:44,892 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 20:44:44,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 20:44:44,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 20:44:44,893 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-31 20:44:44,893 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 20:44:44,894 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 20:44:44,894 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 20:44:44,894 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 20:44:44,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 20:44:44,894 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 20:44:44,895 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 20:44:44,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:44:44,895 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 20:44:44,895 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 20:44:44,895 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 20:44:44,896 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 20:44:44,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 20:44:44,896 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 20:44:44,896 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 20:44:44,897 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 20:44:44,897 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 20:44:44,897 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 20:44:44,897 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7b88fee59ad03447f68c116aa52c40e006cc633d8116aa4d446048afd18fa64f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 20:44:45,184 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 20:44:45,209 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 20:44:45,211 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 20:44:45,212 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 20:44:45,213 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 20:44:45,214 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_09-ptrmunge_racing.i [2023-08-31 20:44:46,316 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 20:44:46,578 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 20:44:46,578 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_09-ptrmunge_racing.i [2023-08-31 20:44:46,592 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64101e8a8/c5f6398f685647da9926627a0edcd989/FLAG16085bd80 [2023-08-31 20:44:46,607 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64101e8a8/c5f6398f685647da9926627a0edcd989 [2023-08-31 20:44:46,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 20:44:46,613 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 20:44:46,615 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 20:44:46,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 20:44:46,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 20:44:46,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:44:46" (1/1) ... [2023-08-31 20:44:46,626 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bb13977 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:44:46, skipping insertion in model container [2023-08-31 20:44:46,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:44:46" (1/1) ... [2023-08-31 20:44:46,632 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 20:44:46,671 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 20:44:46,919 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_09-ptrmunge_racing.i[30176,30189] [2023-08-31 20:44:46,962 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:44:46,977 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 20:44:47,022 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_09-ptrmunge_racing.i[30176,30189] [2023-08-31 20:44:47,037 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:44:47,087 INFO L208 MainTranslator]: Completed translation [2023-08-31 20:44:47,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:44:47 WrapperNode [2023-08-31 20:44:47,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 20:44:47,089 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 20:44:47,089 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 20:44:47,090 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 20:44:47,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:44:47" (1/1) ... [2023-08-31 20:44:47,124 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:44:47" (1/1) ... [2023-08-31 20:44:47,169 INFO L138 Inliner]: procedures = 172, calls = 50, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 286 [2023-08-31 20:44:47,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 20:44:47,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 20:44:47,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 20:44:47,172 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 20:44:47,180 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:44:47" (1/1) ... [2023-08-31 20:44:47,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:44:47" (1/1) ... [2023-08-31 20:44:47,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:44:47" (1/1) ... [2023-08-31 20:44:47,207 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:44:47" (1/1) ... [2023-08-31 20:44:47,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:44:47" (1/1) ... [2023-08-31 20:44:47,237 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:44:47" (1/1) ... [2023-08-31 20:44:47,242 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:44:47" (1/1) ... [2023-08-31 20:44:47,251 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:44:47" (1/1) ... [2023-08-31 20:44:47,254 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 20:44:47,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 20:44:47,262 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 20:44:47,262 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 20:44:47,263 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:44:47" (1/1) ... [2023-08-31 20:44:47,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:44:47,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:44:47,293 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 20:44:47,301 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 20:44:47,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 20:44:47,327 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-31 20:44:47,328 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-31 20:44:47,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 20:44:47,328 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-31 20:44:47,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 20:44:47,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 20:44:47,329 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-31 20:44:47,329 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-31 20:44:47,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 20:44:47,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 20:44:47,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 20:44:47,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 20:44:47,331 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 20:44:47,506 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 20:44:47,508 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 20:44:47,912 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 20:44:47,919 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 20:44:47,919 INFO L302 CfgBuilder]: Removed 24 assume(true) statements. [2023-08-31 20:44:47,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:44:47 BoogieIcfgContainer [2023-08-31 20:44:47,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 20:44:47,923 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 20:44:47,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 20:44:47,926 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 20:44:47,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 08:44:46" (1/3) ... [2023-08-31 20:44:47,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4383f967 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:44:47, skipping insertion in model container [2023-08-31 20:44:47,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:44:47" (2/3) ... [2023-08-31 20:44:47,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4383f967 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:44:47, skipping insertion in model container [2023-08-31 20:44:47,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:44:47" (3/3) ... [2023-08-31 20:44:47,929 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_09-ptrmunge_racing.i [2023-08-31 20:44:47,936 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 20:44:47,944 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 20:44:47,944 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-08-31 20:44:47,944 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 20:44:48,037 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-31 20:44:48,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 266 places, 293 transitions, 608 flow [2023-08-31 20:44:48,229 INFO L130 PetriNetUnfolder]: 58/527 cut-off events. [2023-08-31 20:44:48,235 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-31 20:44:48,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 527 events. 58/527 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2659 event pairs, 0 based on Foata normal form. 0/440 useless extension candidates. Maximal degree in co-relation 293. Up to 8 conditions per place. [2023-08-31 20:44:48,251 INFO L82 GeneralOperation]: Start removeDead. Operand has 266 places, 293 transitions, 608 flow [2023-08-31 20:44:48,263 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 266 places, 293 transitions, 608 flow [2023-08-31 20:44:48,267 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:44:48,285 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 266 places, 293 transitions, 608 flow [2023-08-31 20:44:48,291 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 266 places, 293 transitions, 608 flow [2023-08-31 20:44:48,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 266 places, 293 transitions, 608 flow [2023-08-31 20:44:48,387 INFO L130 PetriNetUnfolder]: 58/527 cut-off events. [2023-08-31 20:44:48,388 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-31 20:44:48,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 527 events. 58/527 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2659 event pairs, 0 based on Foata normal form. 0/440 useless extension candidates. Maximal degree in co-relation 293. Up to 8 conditions per place. [2023-08-31 20:44:48,419 INFO L119 LiptonReduction]: Number of co-enabled transitions 39668 [2023-08-31 20:44:52,826 INFO L134 LiptonReduction]: Checked pairs total: 156555 [2023-08-31 20:44:52,827 INFO L136 LiptonReduction]: Total number of compositions: 167 [2023-08-31 20:44:52,840 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:44:52,845 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;@4f53de66, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:44:52,845 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-31 20:44:52,850 INFO L130 PetriNetUnfolder]: 1/22 cut-off events. [2023-08-31 20:44:52,850 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:44:52,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:44:52,851 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-31 20:44:52,852 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:44:52,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:44:52,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1921012282, now seen corresponding path program 1 times [2023-08-31 20:44:52,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:44:52,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20634690] [2023-08-31 20:44:52,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:44:52,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:44:53,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:44:53,009 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:44:53,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:44:53,074 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:44:53,076 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:44:53,077 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-31 20:44:53,078 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-31 20:44:53,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 20:44:53,079 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:44:53,085 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-31 20:44:53,086 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:44:53,086 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-31 20:44:53,196 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-31 20:44:53,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 436 places, 487 transitions, 1022 flow [2023-08-31 20:44:53,636 INFO L130 PetriNetUnfolder]: 197/1559 cut-off events. [2023-08-31 20:44:53,637 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2023-08-31 20:44:53,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1656 conditions, 1559 events. 197/1559 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 10989 event pairs, 1 based on Foata normal form. 0/1303 useless extension candidates. Maximal degree in co-relation 940. Up to 32 conditions per place. [2023-08-31 20:44:53,666 INFO L82 GeneralOperation]: Start removeDead. Operand has 436 places, 487 transitions, 1022 flow [2023-08-31 20:44:53,684 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 436 places, 487 transitions, 1022 flow [2023-08-31 20:44:53,684 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:44:53,684 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 436 places, 487 transitions, 1022 flow [2023-08-31 20:44:53,684 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 436 places, 487 transitions, 1022 flow [2023-08-31 20:44:53,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 436 places, 487 transitions, 1022 flow [2023-08-31 20:44:54,193 INFO L130 PetriNetUnfolder]: 197/1559 cut-off events. [2023-08-31 20:44:54,194 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2023-08-31 20:44:54,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1656 conditions, 1559 events. 197/1559 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 10989 event pairs, 1 based on Foata normal form. 0/1303 useless extension candidates. Maximal degree in co-relation 940. Up to 32 conditions per place. [2023-08-31 20:44:54,317 INFO L119 LiptonReduction]: Number of co-enabled transitions 153784 [2023-08-31 20:44:59,537 INFO L134 LiptonReduction]: Checked pairs total: 741843 [2023-08-31 20:44:59,537 INFO L136 LiptonReduction]: Total number of compositions: 261 [2023-08-31 20:44:59,539 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:44:59,540 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;@4f53de66, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:44:59,540 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-31 20:44:59,550 INFO L130 PetriNetUnfolder]: 19/148 cut-off events. [2023-08-31 20:44:59,550 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-31 20:44:59,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:44:59,551 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-31 20:44:59,551 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:44:59,552 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:44:59,552 INFO L85 PathProgramCache]: Analyzing trace with hash 678049595, now seen corresponding path program 1 times [2023-08-31 20:44:59,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:44:59,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642251350] [2023-08-31 20:44:59,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:44:59,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:44:59,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:44:59,577 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:44:59,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:44:59,598 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:44:59,599 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:44:59,599 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-31 20:44:59,599 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-31 20:44:59,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 20:44:59,600 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:44:59,600 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-31 20:44:59,600 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:44:59,601 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-31 20:44:59,688 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-31 20:44:59,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 606 places, 681 transitions, 1440 flow [2023-08-31 20:45:01,101 INFO L130 PetriNetUnfolder]: 664/4365 cut-off events. [2023-08-31 20:45:01,102 INFO L131 PetriNetUnfolder]: For 419/419 co-relation queries the response was YES. [2023-08-31 20:45:01,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4816 conditions, 4365 events. 664/4365 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 36547 event pairs, 32 based on Foata normal form. 0/3686 useless extension candidates. Maximal degree in co-relation 2752. Up to 192 conditions per place. [2023-08-31 20:45:01,206 INFO L82 GeneralOperation]: Start removeDead. Operand has 606 places, 681 transitions, 1440 flow [2023-08-31 20:45:01,259 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 606 places, 681 transitions, 1440 flow [2023-08-31 20:45:01,259 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:45:01,260 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 606 places, 681 transitions, 1440 flow [2023-08-31 20:45:01,260 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 606 places, 681 transitions, 1440 flow [2023-08-31 20:45:01,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 606 places, 681 transitions, 1440 flow [2023-08-31 20:45:02,751 INFO L130 PetriNetUnfolder]: 664/4365 cut-off events. [2023-08-31 20:45:02,752 INFO L131 PetriNetUnfolder]: For 419/419 co-relation queries the response was YES. [2023-08-31 20:45:02,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4816 conditions, 4365 events. 664/4365 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 36547 event pairs, 32 based on Foata normal form. 0/3686 useless extension candidates. Maximal degree in co-relation 2752. Up to 192 conditions per place. [2023-08-31 20:45:03,363 INFO L119 LiptonReduction]: Number of co-enabled transitions 342348 [2023-08-31 20:45:09,333 INFO L134 LiptonReduction]: Checked pairs total: 1526423 [2023-08-31 20:45:09,333 INFO L136 LiptonReduction]: Total number of compositions: 352 [2023-08-31 20:45:09,335 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:45:09,336 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;@4f53de66, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:45:09,336 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-31 20:45:09,365 INFO L130 PetriNetUnfolder]: 38/291 cut-off events. [2023-08-31 20:45:09,365 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-31 20:45:09,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:45:09,366 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-31 20:45:09,366 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:45:09,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:45:09,367 INFO L85 PathProgramCache]: Analyzing trace with hash 775474182, now seen corresponding path program 1 times [2023-08-31 20:45:09,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:45:09,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723467963] [2023-08-31 20:45:09,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:45:09,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:45:09,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:45:09,394 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:45:09,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:45:09,416 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:45:09,417 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:45:09,417 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-31 20:45:09,417 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-31 20:45:09,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 20:45:09,417 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:45:09,418 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-31 20:45:09,418 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:45:09,418 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-31 20:45:09,515 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2023-08-31 20:45:09,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 776 places, 875 transitions, 1862 flow [2023-08-31 20:45:15,617 INFO L130 PetriNetUnfolder]: 2647/13913 cut-off events. [2023-08-31 20:45:15,617 INFO L131 PetriNetUnfolder]: For 2144/2144 co-relation queries the response was YES. [2023-08-31 20:45:16,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16078 conditions, 13913 events. 2647/13913 cut-off events. For 2144/2144 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 139682 event pairs, 313 based on Foata normal form. 0/11909 useless extension candidates. Maximal degree in co-relation 8585. Up to 1024 conditions per place. [2023-08-31 20:45:16,146 INFO L82 GeneralOperation]: Start removeDead. Operand has 776 places, 875 transitions, 1862 flow [2023-08-31 20:45:16,562 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 776 places, 875 transitions, 1862 flow [2023-08-31 20:45:16,562 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:45:16,562 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 776 places, 875 transitions, 1862 flow [2023-08-31 20:45:16,562 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 776 places, 875 transitions, 1862 flow [2023-08-31 20:45:16,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 776 places, 875 transitions, 1862 flow [2023-08-31 20:45:21,999 INFO L130 PetriNetUnfolder]: 2647/13913 cut-off events. [2023-08-31 20:45:21,999 INFO L131 PetriNetUnfolder]: For 2144/2144 co-relation queries the response was YES. [2023-08-31 20:45:22,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16078 conditions, 13913 events. 2647/13913 cut-off events. For 2144/2144 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 139682 event pairs, 313 based on Foata normal form. 0/11909 useless extension candidates. Maximal degree in co-relation 8585. Up to 1024 conditions per place. [2023-08-31 20:45:24,116 INFO L119 LiptonReduction]: Number of co-enabled transitions 605360 [2023-08-31 20:45:31,195 INFO L134 LiptonReduction]: Checked pairs total: 2708965 [2023-08-31 20:45:31,195 INFO L136 LiptonReduction]: Total number of compositions: 445 [2023-08-31 20:45:31,198 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:45:31,199 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;@4f53de66, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:45:31,199 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-31 20:45:31,256 INFO L130 PetriNetUnfolder]: 79/594 cut-off events. [2023-08-31 20:45:31,256 INFO L131 PetriNetUnfolder]: For 63/63 co-relation queries the response was YES. [2023-08-31 20:45:31,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:45:31,256 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-31 20:45:31,257 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:45:31,257 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:45:31,257 INFO L85 PathProgramCache]: Analyzing trace with hash 25411923, now seen corresponding path program 1 times [2023-08-31 20:45:31,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:45:31,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601164003] [2023-08-31 20:45:31,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:45:31,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:45:31,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:45:31,281 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:45:31,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:45:31,302 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:45:31,303 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:45:31,303 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-31 20:45:31,303 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-31 20:45:31,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 20:45:31,304 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:45:31,304 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-31 20:45:31,304 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:45:31,304 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-31 20:45:31,444 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2023-08-31 20:45:31,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 946 places, 1069 transitions, 2288 flow [2023-08-31 20:45:59,137 INFO L130 PetriNetUnfolder]: 11762/50939 cut-off events. [2023-08-31 20:45:59,137 INFO L131 PetriNetUnfolder]: For 10450/10450 co-relation queries the response was YES. [2023-08-31 20:46:03,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61365 conditions, 50939 events. 11762/50939 cut-off events. For 10450/10450 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 620584 event pairs, 2148 based on Foata normal form. 0/44116 useless extension candidates. Maximal degree in co-relation 30970. Up to 5120 conditions per place. [2023-08-31 20:46:03,877 INFO L82 GeneralOperation]: Start removeDead. Operand has 946 places, 1069 transitions, 2288 flow [2023-08-31 20:46:05,389 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 946 places, 1069 transitions, 2288 flow [2023-08-31 20:46:05,389 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:46:05,389 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 946 places, 1069 transitions, 2288 flow [2023-08-31 20:46:05,389 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 946 places, 1069 transitions, 2288 flow [2023-08-31 20:46:05,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 946 places, 1069 transitions, 2288 flow [2023-08-31 20:46:32,919 INFO L130 PetriNetUnfolder]: 11762/50939 cut-off events. [2023-08-31 20:46:32,919 INFO L131 PetriNetUnfolder]: For 10450/10450 co-relation queries the response was YES. [2023-08-31 20:46:37,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61365 conditions, 50939 events. 11762/50939 cut-off events. For 10450/10450 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 620584 event pairs, 2148 based on Foata normal form. 0/44116 useless extension candidates. Maximal degree in co-relation 30970. Up to 5120 conditions per place. [2023-08-31 20:46:44,945 INFO L119 LiptonReduction]: Number of co-enabled transitions 942820 [2023-08-31 20:46:53,502 INFO L134 LiptonReduction]: Checked pairs total: 4799770 [2023-08-31 20:46:53,503 INFO L136 LiptonReduction]: Total number of compositions: 546 [2023-08-31 20:46:53,505 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:46:53,506 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;@4f53de66, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:46:53,506 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-31 20:46:53,625 INFO L130 PetriNetUnfolder]: 137/972 cut-off events. [2023-08-31 20:46:53,626 INFO L131 PetriNetUnfolder]: For 135/135 co-relation queries the response was YES. [2023-08-31 20:46:53,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:46:53,626 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:46:53,626 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:46:53,627 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:46:53,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1049213782, now seen corresponding path program 1 times [2023-08-31 20:46:53,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:46:53,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794507311] [2023-08-31 20:46:53,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:46:53,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:46:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:46:53,670 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:46:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:46:53,706 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:46:53,706 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:46:53,706 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-31 20:46:53,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-31 20:46:53,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 20:46:53,706 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:46:53,707 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-31 20:46:53,707 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:46:53,707 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-31 20:46:53,809 INFO L144 ThreadInstanceAdder]: Constructed 24 joinOtherThreadTransitions. [2023-08-31 20:46:53,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1116 places, 1263 transitions, 2718 flow