./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.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 memory safety (deref-memtrack) 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/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_09-ptrmunge_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --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 [2023-09-01 00:31:22,137 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 00:31:22,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 00:31:22,188 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 00:31:22,189 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 00:31:22,192 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 00:31:22,194 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 00:31:22,197 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 00:31:22,199 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 00:31:22,205 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 00:31:22,206 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 00:31:22,208 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 00:31:22,208 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 00:31:22,210 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 00:31:22,211 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 00:31:22,215 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 00:31:22,219 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 00:31:22,219 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 00:31:22,221 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 00:31:22,223 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 00:31:22,236 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 00:31:22,237 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 00:31:22,238 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 00:31:22,239 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 00:31:22,244 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 00:31:22,244 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 00:31:22,244 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 00:31:22,246 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 00:31:22,247 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 00:31:22,247 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 00:31:22,248 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 00:31:22,249 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 00:31:22,251 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 00:31:22,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 00:31:22,252 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 00:31:22,253 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 00:31:22,253 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 00:31:22,253 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 00:31:22,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 00:31:22,254 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 00:31:22,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 00:31:22,256 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 00:31:22,291 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 00:31:22,291 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 00:31:22,292 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 00:31:22,292 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 00:31:22,293 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 00:31:22,294 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 00:31:22,294 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 00:31:22,294 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 00:31:22,295 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 00:31:22,295 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 00:31:22,296 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 00:31:22,296 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 00:31:22,296 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 00:31:22,296 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 00:31:22,296 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 00:31:22,297 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 00:31:22,297 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 00:31:22,297 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 00:31:22,297 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 00:31:22,297 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 00:31:22,297 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 00:31:22,298 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 00:31:22,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 00:31:22,298 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 00:31:22,298 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 00:31:22,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:31:22,299 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 00:31:22,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 00:31:22,299 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 00:31:22,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 00:31:22,300 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 00:31:22,300 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 00:31:22,300 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 00:31:22,300 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 00:31:22,300 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7b88fee59ad03447f68c116aa52c40e006cc633d8116aa4d446048afd18fa64f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 00:31:22,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 00:31:22,625 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 00:31:22,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 00:31:22,628 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 00:31:22,628 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 00:31:22,630 INFO L432 ainManager$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 [2023-09-01 00:31:23,840 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 00:31:24,082 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 00:31:24,083 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_09-ptrmunge_racing.i [2023-09-01 00:31:24,095 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/280200068/7c008b36d5d2456aaf93e54ff073e8df/FLAGe9c8304bd [2023-09-01 00:31:24,109 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/280200068/7c008b36d5d2456aaf93e54ff073e8df [2023-09-01 00:31:24,112 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 00:31:24,113 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 00:31:24,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 00:31:24,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 00:31:24,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 00:31:24,123 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:31:24" (1/1) ... [2023-09-01 00:31:24,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38c3115f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:31:24, skipping insertion in model container [2023-09-01 00:31:24,124 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:31:24" (1/1) ... [2023-09-01 00:31:24,130 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 00:31:24,170 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 00:31:24,502 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] [2023-09-01 00:31:24,535 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:31:24,550 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 00:31:24,592 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] [2023-09-01 00:31:24,638 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:31:24,714 INFO L208 MainTranslator]: Completed translation [2023-09-01 00:31:24,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:31:24 WrapperNode [2023-09-01 00:31:24,715 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 00:31:24,716 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 00:31:24,716 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 00:31:24,717 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 00:31:24,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:31:24" (1/1) ... [2023-09-01 00:31:24,750 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:31:24" (1/1) ... [2023-09-01 00:31:24,787 INFO L138 Inliner]: procedures = 172, calls = 50, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 218 [2023-09-01 00:31:24,788 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 00:31:24,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 00:31:24,789 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 00:31:24,789 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 00:31:24,796 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:31:24" (1/1) ... [2023-09-01 00:31:24,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:31:24" (1/1) ... [2023-09-01 00:31:24,801 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:31:24" (1/1) ... [2023-09-01 00:31:24,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:31:24" (1/1) ... [2023-09-01 00:31:24,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:31:24" (1/1) ... [2023-09-01 00:31:24,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:31:24" (1/1) ... [2023-09-01 00:31:24,827 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:31:24" (1/1) ... [2023-09-01 00:31:24,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:31:24" (1/1) ... [2023-09-01 00:31:24,839 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 00:31:24,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 00:31:24,840 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 00:31:24,840 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 00:31:24,841 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:31:24" (1/1) ... [2023-09-01 00:31:24,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:31:24,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 00:31:24,875 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 00:31:24,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 00:31:24,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 00:31:24,915 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-09-01 00:31:24,916 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-09-01 00:31:24,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 00:31:24,916 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 00:31:24,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 00:31:24,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 00:31:24,916 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-09-01 00:31:24,917 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-09-01 00:31:24,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 00:31:24,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 00:31:24,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 00:31:24,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 00:31:24,919 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 00:31:25,117 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 00:31:25,127 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 00:31:25,551 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 00:31:25,562 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 00:31:25,563 INFO L302 CfgBuilder]: Removed 24 assume(true) statements. [2023-09-01 00:31:25,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:31:25 BoogieIcfgContainer [2023-09-01 00:31:25,567 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 00:31:25,570 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 00:31:25,570 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 00:31:25,572 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 00:31:25,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 12:31:24" (1/3) ... [2023-09-01 00:31:25,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd5c001 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:31:25, skipping insertion in model container [2023-09-01 00:31:25,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:31:24" (2/3) ... [2023-09-01 00:31:25,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd5c001 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:31:25, skipping insertion in model container [2023-09-01 00:31:25,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:31:25" (3/3) ... [2023-09-01 00:31:25,575 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_09-ptrmunge_racing.i [2023-09-01 00:31:25,590 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 00:31:25,590 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2023-09-01 00:31:25,591 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 00:31:25,687 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 00:31:25,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 247 transitions, 516 flow [2023-09-01 00:31:25,849 INFO L130 PetriNetUnfolder]: 58/451 cut-off events. [2023-09-01 00:31:25,849 INFO L131 PetriNetUnfolder]: For 8/12 co-relation queries the response was YES. [2023-09-01 00:31:25,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 471 conditions, 451 events. 58/451 cut-off events. For 8/12 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2216 event pairs, 0 based on Foata normal form. 0/322 useless extension candidates. Maximal degree in co-relation 243. Up to 8 conditions per place. [2023-09-01 00:31:25,870 INFO L82 GeneralOperation]: Start removeDead. Operand has 220 places, 247 transitions, 516 flow [2023-09-01 00:31:25,881 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 220 places, 247 transitions, 516 flow [2023-09-01 00:31:25,885 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:31:25,901 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 220 places, 247 transitions, 516 flow [2023-09-01 00:31:25,907 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 220 places, 247 transitions, 516 flow [2023-09-01 00:31:25,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 247 transitions, 516 flow [2023-09-01 00:31:25,999 INFO L130 PetriNetUnfolder]: 58/451 cut-off events. [2023-09-01 00:31:26,000 INFO L131 PetriNetUnfolder]: For 8/12 co-relation queries the response was YES. [2023-09-01 00:31:26,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 471 conditions, 451 events. 58/451 cut-off events. For 8/12 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2216 event pairs, 0 based on Foata normal form. 0/322 useless extension candidates. Maximal degree in co-relation 243. Up to 8 conditions per place. [2023-09-01 00:31:26,026 INFO L119 LiptonReduction]: Number of co-enabled transitions 26128 [2023-09-01 00:31:30,961 INFO L134 LiptonReduction]: Checked pairs total: 65338 [2023-09-01 00:31:30,961 INFO L136 LiptonReduction]: Total number of compositions: 199 [2023-09-01 00:31:30,973 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:31:30,979 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@1c1f857b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:31:30,979 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 00:31:30,985 INFO L130 PetriNetUnfolder]: 1/31 cut-off events. [2023-09-01 00:31:30,985 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:31:30,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:31:30,986 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 00:31:30,986 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:31:30,990 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:31:30,991 INFO L85 PathProgramCache]: Analyzing trace with hash -771158556, now seen corresponding path program 1 times [2023-09-01 00:31:30,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:31:30,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101954320] [2023-09-01 00:31:30,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:31:30,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:31:31,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:31:31,155 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:31:31,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:31:31,207 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:31:31,209 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:31:31,210 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 00:31:31,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 00:31:31,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 00:31:31,212 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:31:31,215 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 00:31:31,215 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:31:31,215 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 00:31:31,289 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 00:31:31,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 344 places, 395 transitions, 838 flow [2023-09-01 00:31:31,637 INFO L130 PetriNetUnfolder]: 197/1320 cut-off events. [2023-09-01 00:31:31,637 INFO L131 PetriNetUnfolder]: For 72/81 co-relation queries the response was YES. [2023-09-01 00:31:31,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1417 conditions, 1320 events. 197/1320 cut-off events. For 72/81 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 8775 event pairs, 1 based on Foata normal form. 0/944 useless extension candidates. Maximal degree in co-relation 794. Up to 32 conditions per place. [2023-09-01 00:31:31,656 INFO L82 GeneralOperation]: Start removeDead. Operand has 344 places, 395 transitions, 838 flow [2023-09-01 00:31:31,670 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 344 places, 395 transitions, 838 flow [2023-09-01 00:31:31,671 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:31:31,671 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 344 places, 395 transitions, 838 flow [2023-09-01 00:31:31,671 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 344 places, 395 transitions, 838 flow [2023-09-01 00:31:31,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 344 places, 395 transitions, 838 flow [2023-09-01 00:31:31,917 INFO L130 PetriNetUnfolder]: 197/1320 cut-off events. [2023-09-01 00:31:31,918 INFO L131 PetriNetUnfolder]: For 72/81 co-relation queries the response was YES. [2023-09-01 00:31:31,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1417 conditions, 1320 events. 197/1320 cut-off events. For 72/81 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 8775 event pairs, 1 based on Foata normal form. 0/944 useless extension candidates. Maximal degree in co-relation 794. Up to 32 conditions per place. [2023-09-01 00:31:31,994 INFO L119 LiptonReduction]: Number of co-enabled transitions 95424 [2023-09-01 00:31:38,100 INFO L134 LiptonReduction]: Checked pairs total: 272387 [2023-09-01 00:31:38,101 INFO L136 LiptonReduction]: Total number of compositions: 302 [2023-09-01 00:31:38,103 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:31:38,104 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@1c1f857b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:31:38,104 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 00:31:38,135 INFO L130 PetriNetUnfolder]: 37/198 cut-off events. [2023-09-01 00:31:38,136 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-09-01 00:31:38,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:31:38,136 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 00:31:38,137 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:31:38,137 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:31:38,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1660816326, now seen corresponding path program 1 times [2023-09-01 00:31:38,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:31:38,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608968130] [2023-09-01 00:31:38,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:31:38,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:31:38,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:31:38,171 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:31:38,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:31:38,201 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:31:38,205 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:31:38,206 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 00:31:38,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 00:31:38,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 00:31:38,207 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:31:38,208 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 00:31:38,209 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:31:38,209 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 00:31:38,285 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 00:31:38,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 468 places, 543 transitions, 1164 flow [2023-09-01 00:31:39,375 INFO L130 PetriNetUnfolder]: 664/3741 cut-off events. [2023-09-01 00:31:39,375 INFO L131 PetriNetUnfolder]: For 419/435 co-relation queries the response was YES. [2023-09-01 00:31:39,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4192 conditions, 3741 events. 664/3741 cut-off events. For 419/435 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 29959 event pairs, 52 based on Foata normal form. 0/2740 useless extension candidates. Maximal degree in co-relation 2370. Up to 192 conditions per place. [2023-09-01 00:31:39,460 INFO L82 GeneralOperation]: Start removeDead. Operand has 468 places, 543 transitions, 1164 flow [2023-09-01 00:31:39,504 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 468 places, 543 transitions, 1164 flow [2023-09-01 00:31:39,504 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:31:39,504 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 468 places, 543 transitions, 1164 flow [2023-09-01 00:31:39,505 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 468 places, 543 transitions, 1164 flow [2023-09-01 00:31:39,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 468 places, 543 transitions, 1164 flow [2023-09-01 00:31:40,467 INFO L130 PetriNetUnfolder]: 664/3741 cut-off events. [2023-09-01 00:31:40,468 INFO L131 PetriNetUnfolder]: For 419/435 co-relation queries the response was YES. [2023-09-01 00:31:40,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4192 conditions, 3741 events. 664/3741 cut-off events. For 419/435 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 29959 event pairs, 52 based on Foata normal form. 0/2740 useless extension candidates. Maximal degree in co-relation 2370. Up to 192 conditions per place. [2023-09-01 00:31:40,967 INFO L119 LiptonReduction]: Number of co-enabled transitions 207888 [2023-09-01 00:31:48,083 INFO L134 LiptonReduction]: Checked pairs total: 557490 [2023-09-01 00:31:48,084 INFO L136 LiptonReduction]: Total number of compositions: 410 [2023-09-01 00:31:48,086 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:31:48,087 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@1c1f857b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:31:48,087 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 00:31:48,126 INFO L130 PetriNetUnfolder]: 81/401 cut-off events. [2023-09-01 00:31:48,127 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2023-09-01 00:31:48,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:31:48,127 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 00:31:48,127 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:31:48,128 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:31:48,128 INFO L85 PathProgramCache]: Analyzing trace with hash -484588730, now seen corresponding path program 1 times [2023-09-01 00:31:48,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:31:48,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037127097] [2023-09-01 00:31:48,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:31:48,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:31:48,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:31:48,153 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:31:48,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:31:48,175 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:31:48,176 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:31:48,176 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 00:31:48,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 00:31:48,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 00:31:48,177 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:31:48,177 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 00:31:48,178 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:31:48,178 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 00:31:48,267 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2023-09-01 00:31:48,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 592 places, 691 transitions, 1494 flow [2023-09-01 00:31:52,688 INFO L130 PetriNetUnfolder]: 2647/12142 cut-off events. [2023-09-01 00:31:52,688 INFO L131 PetriNetUnfolder]: For 2144/2174 co-relation queries the response was YES. [2023-09-01 00:31:53,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14307 conditions, 12142 events. 2647/12142 cut-off events. For 2144/2174 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 119248 event pairs, 626 based on Foata normal form. 0/9166 useless extension candidates. Maximal degree in co-relation 7557. Up to 1024 conditions per place. [2023-09-01 00:31:53,022 INFO L82 GeneralOperation]: Start removeDead. Operand has 592 places, 691 transitions, 1494 flow [2023-09-01 00:31:53,342 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 592 places, 691 transitions, 1494 flow [2023-09-01 00:31:53,342 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:31:53,343 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 592 places, 691 transitions, 1494 flow [2023-09-01 00:31:53,343 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 592 places, 691 transitions, 1494 flow [2023-09-01 00:31:53,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 592 places, 691 transitions, 1494 flow [2023-09-01 00:31:57,159 INFO L130 PetriNetUnfolder]: 2647/12142 cut-off events. [2023-09-01 00:31:57,159 INFO L131 PetriNetUnfolder]: For 2144/2174 co-relation queries the response was YES. [2023-09-01 00:31:57,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14307 conditions, 12142 events. 2647/12142 cut-off events. For 2144/2174 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 119248 event pairs, 626 based on Foata normal form. 0/9166 useless extension candidates. Maximal degree in co-relation 7557. Up to 1024 conditions per place. [2023-09-01 00:31:58,500 INFO L119 LiptonReduction]: Number of co-enabled transitions 363520 [2023-09-01 00:32:06,762 INFO L134 LiptonReduction]: Checked pairs total: 992191 [2023-09-01 00:32:06,762 INFO L136 LiptonReduction]: Total number of compositions: 515 [2023-09-01 00:32:06,765 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:32:06,765 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@1c1f857b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:32:06,766 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 00:32:06,829 INFO L130 PetriNetUnfolder]: 144/697 cut-off events. [2023-09-01 00:32:06,829 INFO L131 PetriNetUnfolder]: For 91/91 co-relation queries the response was YES. [2023-09-01 00:32:06,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:32:06,829 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 00:32:06,830 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:32:06,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:32:06,830 INFO L85 PathProgramCache]: Analyzing trace with hash -80516387, now seen corresponding path program 1 times [2023-09-01 00:32:06,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:32:06,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753996175] [2023-09-01 00:32:06,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:32:06,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:32:06,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:32:06,855 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:32:06,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:32:06,878 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:32:06,878 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:32:06,878 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 00:32:06,879 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 00:32:06,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 00:32:06,879 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:32:06,880 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 00:32:06,880 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:32:06,880 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 00:32:06,950 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2023-09-01 00:32:06,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 716 places, 839 transitions, 1828 flow [2023-09-01 00:32:26,720 INFO L130 PetriNetUnfolder]: 11762/45099 cut-off events. [2023-09-01 00:32:26,720 INFO L131 PetriNetUnfolder]: For 10450/10486 co-relation queries the response was YES. [2023-09-01 00:32:29,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55525 conditions, 45099 events. 11762/45099 cut-off events. For 10450/10486 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 535570 event pairs, 4296 based on Foata normal form. 0/34910 useless extension candidates. Maximal degree in co-relation 27814. Up to 5120 conditions per place. [2023-09-01 00:32:29,452 INFO L82 GeneralOperation]: Start removeDead. Operand has 716 places, 839 transitions, 1828 flow [2023-09-01 00:32:30,457 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 716 places, 839 transitions, 1828 flow [2023-09-01 00:32:30,458 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:32:30,458 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 716 places, 839 transitions, 1828 flow [2023-09-01 00:32:30,458 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 716 places, 839 transitions, 1828 flow [2023-09-01 00:32:30,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 716 places, 839 transitions, 1828 flow [2023-09-01 00:32:49,689 INFO L130 PetriNetUnfolder]: 11762/45099 cut-off events. [2023-09-01 00:32:49,689 INFO L131 PetriNetUnfolder]: For 10450/10486 co-relation queries the response was YES. [2023-09-01 00:32:52,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55525 conditions, 45099 events. 11762/45099 cut-off events. For 10450/10486 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 535570 event pairs, 4296 based on Foata normal form. 0/34910 useless extension candidates. Maximal degree in co-relation 27814. Up to 5120 conditions per place. [2023-09-01 00:32:57,609 INFO L119 LiptonReduction]: Number of co-enabled transitions 562320 [2023-09-01 00:33:07,451 INFO L134 LiptonReduction]: Checked pairs total: 1546965 [2023-09-01 00:33:07,451 INFO L136 LiptonReduction]: Total number of compositions: 628 [2023-09-01 00:33:07,454 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:33:07,455 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@1c1f857b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:33:07,455 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 00:33:07,566 INFO L130 PetriNetUnfolder]: 220/1043 cut-off events. [2023-09-01 00:33:07,567 INFO L131 PetriNetUnfolder]: For 167/167 co-relation queries the response was YES. [2023-09-01 00:33:07,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:33:07,567 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:33:07,567 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:33:07,568 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:33:07,568 INFO L85 PathProgramCache]: Analyzing trace with hash -2070142478, now seen corresponding path program 1 times [2023-09-01 00:33:07,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:33:07,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029763367] [2023-09-01 00:33:07,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:33:07,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:33:07,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:33:07,621 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:33:07,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:33:07,644 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:33:07,644 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:33:07,645 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 00:33:07,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 00:33:07,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 00:33:07,645 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:33:07,646 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 00:33:07,646 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:33:07,646 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 00:33:07,723 INFO L144 ThreadInstanceAdder]: Constructed 24 joinOtherThreadTransitions. [2023-09-01 00:33:07,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 840 places, 987 transitions, 2166 flow [2023-09-01 00:34:58,795 INFO L130 PetriNetUnfolder]: 53929/180372 cut-off events. [2023-09-01 00:34:58,805 INFO L131 PetriNetUnfolder]: For 49552/49615 co-relation queries the response was YES. [2023-09-01 00:35:20,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229801 conditions, 180372 events. 53929/180372 cut-off events. For 49552/49615 co-relation queries the response was YES. Maximal size of possible extension queue 2473. Compared 2523683 event pairs, 24930 based on Foata normal form. 0/142180 useless extension candidates. Maximal degree in co-relation 112392. Up to 24576 conditions per place. [2023-09-01 00:35:20,232 INFO L82 GeneralOperation]: Start removeDead. Operand has 840 places, 987 transitions, 2166 flow [2023-09-01 00:35:31,514 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 840 places, 987 transitions, 2166 flow [2023-09-01 00:35:31,514 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:35:31,514 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 840 places, 987 transitions, 2166 flow [2023-09-01 00:35:31,515 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 840 places, 987 transitions, 2166 flow [2023-09-01 00:35:31,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 840 places, 987 transitions, 2166 flow