./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_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_01-simple_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 eddb66a74cd149f880832378d52d5c02c94fd6efcf2d83aeade11bcdaaabe426 --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 00:26:11,371 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 00:26:11,373 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 00:26:11,415 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 00:26:11,416 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 00:26:11,419 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 00:26:11,421 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 00:26:11,424 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 00:26:11,426 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 00:26:11,431 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 00:26:11,432 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 00:26:11,434 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 00:26:11,434 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 00:26:11,438 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 00:26:11,439 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 00:26:11,444 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 00:26:11,446 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 00:26:11,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 00:26:11,448 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 00:26:11,453 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 00:26:11,455 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 00:26:11,456 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 00:26:11,457 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 00:26:11,457 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 00:26:11,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 00:26:11,465 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 00:26:11,465 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 00:26:11,467 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 00:26:11,467 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 00:26:11,468 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 00:26:11,468 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 00:26:11,470 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 00:26:11,472 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 00:26:11,472 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 00:26:11,473 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 00:26:11,473 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 00:26:11,474 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 00:26:11,474 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 00:26:11,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 00:26:11,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 00:26:11,476 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 00:26:11,477 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 00:26:11,509 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 00:26:11,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 00:26:11,510 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 00:26:11,510 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 00:26:11,511 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 00:26:11,511 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 00:26:11,512 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 00:26:11,512 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 00:26:11,512 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 00:26:11,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 00:26:11,513 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 00:26:11,513 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 00:26:11,514 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 00:26:11,514 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 00:26:11,514 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 00:26:11,514 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 00:26:11,514 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 00:26:11,515 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 00:26:11,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 00:26:11,515 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 00:26:11,515 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 00:26:11,515 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 00:26:11,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 00:26:11,516 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 00:26:11,516 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 00:26:11,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:26:11,516 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 00:26:11,517 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 00:26:11,517 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 00:26:11,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 00:26:11,517 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 00:26:11,517 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 00:26:11,518 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 00:26:11,518 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 00:26:11,518 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eddb66a74cd149f880832378d52d5c02c94fd6efcf2d83aeade11bcdaaabe426 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 00:26:11,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 00:26:11,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 00:26:11,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 00:26:11,815 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 00:26:11,816 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 00:26:11,817 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_racing.i [2023-09-01 00:26:12,947 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 00:26:13,197 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 00:26:13,197 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_racing.i [2023-09-01 00:26:13,209 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fee784c6/e334cb4429af4380a86eb968a794a905/FLAG4aad5d6f4 [2023-09-01 00:26:13,228 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fee784c6/e334cb4429af4380a86eb968a794a905 [2023-09-01 00:26:13,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 00:26:13,231 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 00:26:13,232 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 00:26:13,232 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 00:26:13,237 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 00:26:13,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:26:13" (1/1) ... [2023-09-01 00:26:13,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3358a5a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:13, skipping insertion in model container [2023-09-01 00:26:13,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:26:13" (1/1) ... [2023-09-01 00:26:13,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 00:26:13,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 00:26:13,513 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_01-simple_racing.i[30176,30189] [2023-09-01 00:26:13,542 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:26:13,557 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 00:26:13,635 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_01-simple_racing.i[30176,30189] [2023-09-01 00:26:13,665 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:26:13,708 INFO L208 MainTranslator]: Completed translation [2023-09-01 00:26:13,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:13 WrapperNode [2023-09-01 00:26:13,709 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 00:26:13,710 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 00:26:13,711 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 00:26:13,711 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 00:26:13,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:13" (1/1) ... [2023-09-01 00:26:13,744 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:13" (1/1) ... [2023-09-01 00:26:13,772 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 79 [2023-09-01 00:26:13,772 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 00:26:13,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 00:26:13,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 00:26:13,773 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 00:26:13,781 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:13" (1/1) ... [2023-09-01 00:26:13,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:13" (1/1) ... [2023-09-01 00:26:13,793 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:13" (1/1) ... [2023-09-01 00:26:13,794 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:13" (1/1) ... [2023-09-01 00:26:13,802 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:13" (1/1) ... [2023-09-01 00:26:13,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:13" (1/1) ... [2023-09-01 00:26:13,816 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:13" (1/1) ... [2023-09-01 00:26:13,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:13" (1/1) ... [2023-09-01 00:26:13,821 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 00:26:13,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 00:26:13,826 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 00:26:13,826 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 00:26:13,827 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:13" (1/1) ... [2023-09-01 00:26:13,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:26:13,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 00:26:13,862 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 00:26:13,874 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 00:26:13,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 00:26:13,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 00:26:13,920 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 00:26:13,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 00:26:13,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 00:26:13,920 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 00:26:13,920 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 00:26:13,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 00:26:13,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 00:26:13,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 00:26:13,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 00:26:13,922 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 00:26:14,089 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 00:26:14,106 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 00:26:14,369 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 00:26:14,376 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 00:26:14,383 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-09-01 00:26:14,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:26:14 BoogieIcfgContainer [2023-09-01 00:26:14,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 00:26:14,388 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 00:26:14,389 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 00:26:14,391 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 00:26:14,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 12:26:13" (1/3) ... [2023-09-01 00:26:14,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10864d1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:26:14, skipping insertion in model container [2023-09-01 00:26:14,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:26:13" (2/3) ... [2023-09-01 00:26:14,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10864d1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:26:14, skipping insertion in model container [2023-09-01 00:26:14,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:26:14" (3/3) ... [2023-09-01 00:26:14,395 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_01-simple_racing.i [2023-09-01 00:26:14,411 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 00:26:14,412 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-09-01 00:26:14,412 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 00:26:14,486 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 00:26:14,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 114 transitions, 236 flow [2023-09-01 00:26:14,618 INFO L130 PetriNetUnfolder]: 17/154 cut-off events. [2023-09-01 00:26:14,618 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 00:26:14,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 154 events. 17/154 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 377 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 74. Up to 4 conditions per place. [2023-09-01 00:26:14,624 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 114 transitions, 236 flow [2023-09-01 00:26:14,630 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 109 transitions, 223 flow [2023-09-01 00:26:14,633 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:26:14,651 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 109 transitions, 223 flow [2023-09-01 00:26:14,655 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 109 transitions, 223 flow [2023-09-01 00:26:14,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 109 transitions, 223 flow [2023-09-01 00:26:14,705 INFO L130 PetriNetUnfolder]: 16/149 cut-off events. [2023-09-01 00:26:14,705 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:26:14,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 149 events. 16/149 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 362 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 74. Up to 4 conditions per place. [2023-09-01 00:26:14,710 INFO L119 LiptonReduction]: Number of co-enabled transitions 2576 [2023-09-01 00:26:17,736 INFO L134 LiptonReduction]: Checked pairs total: 4368 [2023-09-01 00:26:17,737 INFO L136 LiptonReduction]: Total number of compositions: 97 [2023-09-01 00:26:17,749 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:26:17,755 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;@4848c0a9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:26:17,755 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:26:17,767 INFO L130 PetriNetUnfolder]: 2/28 cut-off events. [2023-09-01 00:26:17,768 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:26:17,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:26:17,770 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 00:26:17,771 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:26:17,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:26:17,776 INFO L85 PathProgramCache]: Analyzing trace with hash 22586865, now seen corresponding path program 1 times [2023-09-01 00:26:17,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:26:17,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569412173] [2023-09-01 00:26:17,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:26:17,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:26:17,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:26:17,900 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:26:17,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:26:17,971 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:26:17,972 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:26:17,978 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:26:17,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 00:26:17,981 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:26:17,984 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:26:17,984 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:26:17,985 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 00:26:18,002 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 00:26:18,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 144 transitions, 306 flow [2023-09-01 00:26:18,041 INFO L130 PetriNetUnfolder]: 31/253 cut-off events. [2023-09-01 00:26:18,041 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 00:26:18,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 253 events. 31/253 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 735 event pairs, 0 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 156. Up to 8 conditions per place. [2023-09-01 00:26:18,043 INFO L82 GeneralOperation]: Start removeDead. Operand has 130 places, 144 transitions, 306 flow [2023-09-01 00:26:18,045 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 144 transitions, 306 flow [2023-09-01 00:26:18,046 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:26:18,046 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 130 places, 144 transitions, 306 flow [2023-09-01 00:26:18,047 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 130 places, 144 transitions, 306 flow [2023-09-01 00:26:18,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 144 transitions, 306 flow [2023-09-01 00:26:18,084 INFO L130 PetriNetUnfolder]: 31/253 cut-off events. [2023-09-01 00:26:18,085 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 00:26:18,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 253 events. 31/253 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 735 event pairs, 0 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 156. Up to 8 conditions per place. [2023-09-01 00:26:18,096 INFO L119 LiptonReduction]: Number of co-enabled transitions 7336 [2023-09-01 00:26:20,917 INFO L134 LiptonReduction]: Checked pairs total: 17122 [2023-09-01 00:26:20,918 INFO L136 LiptonReduction]: Total number of compositions: 110 [2023-09-01 00:26:20,920 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:26:20,921 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;@4848c0a9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:26:20,922 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:26:20,928 INFO L130 PetriNetUnfolder]: 10/68 cut-off events. [2023-09-01 00:26:20,928 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 00:26:20,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:26:20,929 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 00:26:20,929 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:26:20,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:26:20,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1714566092, now seen corresponding path program 1 times [2023-09-01 00:26:20,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:26:20,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024597614] [2023-09-01 00:26:20,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:26:20,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:26:20,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:26:20,967 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:26:20,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:26:20,992 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:26:20,993 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:26:20,993 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:26:20,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 00:26:20,993 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:26:20,994 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:26:20,994 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:26:20,994 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 00:26:21,016 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 00:26:21,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 174 transitions, 378 flow [2023-09-01 00:26:21,058 INFO L130 PetriNetUnfolder]: 50/393 cut-off events. [2023-09-01 00:26:21,058 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 00:26:21,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 393 events. 50/393 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1331 event pairs, 1 based on Foata normal form. 0/303 useless extension candidates. Maximal degree in co-relation 261. Up to 16 conditions per place. [2023-09-01 00:26:21,061 INFO L82 GeneralOperation]: Start removeDead. Operand has 155 places, 174 transitions, 378 flow [2023-09-01 00:26:21,064 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 155 places, 174 transitions, 378 flow [2023-09-01 00:26:21,064 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:26:21,064 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 155 places, 174 transitions, 378 flow [2023-09-01 00:26:21,065 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 155 places, 174 transitions, 378 flow [2023-09-01 00:26:21,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 174 transitions, 378 flow [2023-09-01 00:26:21,100 INFO L130 PetriNetUnfolder]: 50/393 cut-off events. [2023-09-01 00:26:21,100 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 00:26:21,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 393 events. 50/393 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1331 event pairs, 1 based on Foata normal form. 0/303 useless extension candidates. Maximal degree in co-relation 261. Up to 16 conditions per place. [2023-09-01 00:26:21,113 INFO L119 LiptonReduction]: Number of co-enabled transitions 13608 [2023-09-01 00:26:23,918 INFO L134 LiptonReduction]: Checked pairs total: 36238 [2023-09-01 00:26:23,918 INFO L136 LiptonReduction]: Total number of compositions: 122 [2023-09-01 00:26:23,920 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:26:23,921 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;@4848c0a9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:26:23,922 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:26:23,942 INFO L130 PetriNetUnfolder]: 22/112 cut-off events. [2023-09-01 00:26:23,942 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 00:26:23,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:26:23,943 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 00:26:23,948 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:26:23,949 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:26:23,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1832423150, now seen corresponding path program 1 times [2023-09-01 00:26:23,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:26:23,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085769895] [2023-09-01 00:26:23,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:26:23,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:26:24,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:26:24,011 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:26:24,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:26:24,044 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:26:24,044 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:26:24,044 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:26:24,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 00:26:24,045 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:26:24,046 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:26:24,046 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:26:24,046 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 00:26:24,068 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 00:26:24,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 204 transitions, 452 flow [2023-09-01 00:26:24,145 INFO L130 PetriNetUnfolder]: 81/617 cut-off events. [2023-09-01 00:26:24,145 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 00:26:24,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 672 conditions, 617 events. 81/617 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2493 event pairs, 6 based on Foata normal form. 0/473 useless extension candidates. Maximal degree in co-relation 413. Up to 32 conditions per place. [2023-09-01 00:26:24,151 INFO L82 GeneralOperation]: Start removeDead. Operand has 180 places, 204 transitions, 452 flow [2023-09-01 00:26:24,155 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 180 places, 204 transitions, 452 flow [2023-09-01 00:26:24,155 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:26:24,156 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 180 places, 204 transitions, 452 flow [2023-09-01 00:26:24,156 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 180 places, 204 transitions, 452 flow [2023-09-01 00:26:24,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 204 transitions, 452 flow [2023-09-01 00:26:24,244 INFO L130 PetriNetUnfolder]: 81/617 cut-off events. [2023-09-01 00:26:24,244 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 00:26:24,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 672 conditions, 617 events. 81/617 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2493 event pairs, 6 based on Foata normal form. 0/473 useless extension candidates. Maximal degree in co-relation 413. Up to 32 conditions per place. [2023-09-01 00:26:24,264 INFO L119 LiptonReduction]: Number of co-enabled transitions 21616 [2023-09-01 00:26:27,115 INFO L134 LiptonReduction]: Checked pairs total: 60120 [2023-09-01 00:26:27,117 INFO L136 LiptonReduction]: Total number of compositions: 137 [2023-09-01 00:26:27,120 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:26:27,121 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;@4848c0a9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:26:27,121 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:26:27,133 INFO L130 PetriNetUnfolder]: 33/165 cut-off events. [2023-09-01 00:26:27,133 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-09-01 00:26:27,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:26:27,133 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 00:26:27,136 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:26:27,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:26:27,137 INFO L85 PathProgramCache]: Analyzing trace with hash 617906737, now seen corresponding path program 1 times [2023-09-01 00:26:27,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:26:27,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962091002] [2023-09-01 00:26:27,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:26:27,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:26:27,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:26:27,197 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:26:27,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:26:27,231 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:26:27,234 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:26:27,235 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:26:27,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 00:26:27,236 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:26:27,236 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:26:27,236 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:26:27,237 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 00:26:27,271 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 00:26:27,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 234 transitions, 528 flow [2023-09-01 00:26:27,402 INFO L130 PetriNetUnfolder]: 140/1013 cut-off events. [2023-09-01 00:26:27,402 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 00:26:27,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1124 conditions, 1013 events. 140/1013 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 4992 event pairs, 23 based on Foata normal form. 0/775 useless extension candidates. Maximal degree in co-relation 662. Up to 80 conditions per place. [2023-09-01 00:26:27,413 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 234 transitions, 528 flow [2023-09-01 00:26:27,420 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 205 places, 234 transitions, 528 flow [2023-09-01 00:26:27,420 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:26:27,421 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 205 places, 234 transitions, 528 flow [2023-09-01 00:26:27,421 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 205 places, 234 transitions, 528 flow [2023-09-01 00:26:27,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 234 transitions, 528 flow [2023-09-01 00:26:27,549 INFO L130 PetriNetUnfolder]: 140/1013 cut-off events. [2023-09-01 00:26:27,549 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 00:26:27,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1124 conditions, 1013 events. 140/1013 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 4992 event pairs, 23 based on Foata normal form. 0/775 useless extension candidates. Maximal degree in co-relation 662. Up to 80 conditions per place. [2023-09-01 00:26:27,582 INFO L119 LiptonReduction]: Number of co-enabled transitions 31360 [2023-09-01 00:26:30,434 INFO L134 LiptonReduction]: Checked pairs total: 96934 [2023-09-01 00:26:30,434 INFO L136 LiptonReduction]: Total number of compositions: 155 [2023-09-01 00:26:30,436 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:26:30,436 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;@4848c0a9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:26:30,436 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:26:30,451 INFO L130 PetriNetUnfolder]: 41/214 cut-off events. [2023-09-01 00:26:30,452 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-09-01 00:26:30,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:26:30,452 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:26:30,452 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:26:30,452 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:26:30,453 INFO L85 PathProgramCache]: Analyzing trace with hash -654341046, now seen corresponding path program 1 times [2023-09-01 00:26:30,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:26:30,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627101122] [2023-09-01 00:26:30,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:26:30,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:26:30,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:26:30,476 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:26:30,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:26:30,496 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:26:30,496 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:26:30,496 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:26:30,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 00:26:30,497 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:26:30,497 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:26:30,498 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:26:30,498 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 00:26:30,519 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 00:26:30,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 230 places, 264 transitions, 606 flow [2023-09-01 00:26:30,764 INFO L130 PetriNetUnfolder]: 263/1761 cut-off events. [2023-09-01 00:26:30,764 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 00:26:30,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1993 conditions, 1761 events. 263/1761 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 10748 event pairs, 72 based on Foata normal form. 0/1349 useless extension candidates. Maximal degree in co-relation 1112. Up to 192 conditions per place. [2023-09-01 00:26:30,790 INFO L82 GeneralOperation]: Start removeDead. Operand has 230 places, 264 transitions, 606 flow [2023-09-01 00:26:30,804 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 230 places, 264 transitions, 606 flow [2023-09-01 00:26:30,804 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:26:30,804 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 230 places, 264 transitions, 606 flow [2023-09-01 00:26:30,804 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 230 places, 264 transitions, 606 flow [2023-09-01 00:26:30,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 230 places, 264 transitions, 606 flow [2023-09-01 00:26:31,064 INFO L130 PetriNetUnfolder]: 263/1761 cut-off events. [2023-09-01 00:26:31,065 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 00:26:31,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1993 conditions, 1761 events. 263/1761 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 10748 event pairs, 72 based on Foata normal form. 0/1349 useless extension candidates. Maximal degree in co-relation 1112. Up to 192 conditions per place. [2023-09-01 00:26:31,130 INFO L119 LiptonReduction]: Number of co-enabled transitions 42840 [2023-09-01 00:26:34,142 INFO L134 LiptonReduction]: Checked pairs total: 121875 [2023-09-01 00:26:34,142 INFO L136 LiptonReduction]: Total number of compositions: 170 [2023-09-01 00:26:34,143 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:26:34,144 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;@4848c0a9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:26:34,144 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:26:34,164 INFO L130 PetriNetUnfolder]: 56/287 cut-off events. [2023-09-01 00:26:34,164 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-09-01 00:26:34,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:26:34,164 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:26:34,165 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:26:34,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:26:34,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1487411927, now seen corresponding path program 1 times [2023-09-01 00:26:34,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:26:34,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728378444] [2023-09-01 00:26:34,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:26:34,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:26:34,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:26:34,208 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:26:34,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:26:34,238 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:26:34,238 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:26:34,238 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:26:34,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 00:26:34,238 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:26:34,239 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:26:34,239 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:26:34,239 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 00:26:34,261 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 00:26:34,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 255 places, 294 transitions, 686 flow [2023-09-01 00:26:34,767 INFO L130 PetriNetUnfolder]: 530/3229 cut-off events. [2023-09-01 00:26:34,767 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 00:26:34,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3727 conditions, 3229 events. 530/3229 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 24241 event pairs, 201 based on Foata normal form. 0/2483 useless extension candidates. Maximal degree in co-relation 1979. Up to 448 conditions per place. [2023-09-01 00:26:34,818 INFO L82 GeneralOperation]: Start removeDead. Operand has 255 places, 294 transitions, 686 flow [2023-09-01 00:26:34,894 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 255 places, 294 transitions, 686 flow [2023-09-01 00:26:34,894 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:26:34,894 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 255 places, 294 transitions, 686 flow [2023-09-01 00:26:34,894 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 255 places, 294 transitions, 686 flow [2023-09-01 00:26:34,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 255 places, 294 transitions, 686 flow [2023-09-01 00:26:35,449 INFO L130 PetriNetUnfolder]: 530/3229 cut-off events. [2023-09-01 00:26:35,450 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 00:26:35,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3727 conditions, 3229 events. 530/3229 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 24241 event pairs, 201 based on Foata normal form. 0/2483 useless extension candidates. Maximal degree in co-relation 1979. Up to 448 conditions per place. [2023-09-01 00:26:35,602 INFO L119 LiptonReduction]: Number of co-enabled transitions 56056 [2023-09-01 00:26:38,965 INFO L134 LiptonReduction]: Checked pairs total: 181800 [2023-09-01 00:26:38,965 INFO L136 LiptonReduction]: Total number of compositions: 182 [2023-09-01 00:26:38,966 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:26:38,967 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;@4848c0a9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:26:38,967 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:26:38,993 INFO L130 PetriNetUnfolder]: 83/400 cut-off events. [2023-09-01 00:26:38,994 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-09-01 00:26:38,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:26:38,994 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:26:38,994 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:26:38,995 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:26:38,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1920555770, now seen corresponding path program 1 times [2023-09-01 00:26:38,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:26:38,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374520171] [2023-09-01 00:26:38,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:26:38,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:26:39,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:26:39,017 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:26:39,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:26:39,037 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:26:39,038 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:26:39,038 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:26:39,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 00:26:39,038 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:26:39,039 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:26:39,039 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:26:39,039 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 00:26:39,062 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 00:26:39,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 280 places, 324 transitions, 768 flow [2023-09-01 00:26:40,204 INFO L130 PetriNetUnfolder]: 1117/6169 cut-off events. [2023-09-01 00:26:40,205 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 00:26:40,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7254 conditions, 6169 events. 1117/6169 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 54571 event pairs, 522 based on Foata normal form. 0/4769 useless extension candidates. Maximal degree in co-relation 3711. Up to 1024 conditions per place. [2023-09-01 00:26:40,293 INFO L82 GeneralOperation]: Start removeDead. Operand has 280 places, 324 transitions, 768 flow [2023-09-01 00:26:40,339 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 280 places, 324 transitions, 768 flow [2023-09-01 00:26:40,339 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:26:40,339 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 280 places, 324 transitions, 768 flow [2023-09-01 00:26:40,340 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 280 places, 324 transitions, 768 flow [2023-09-01 00:26:40,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 280 places, 324 transitions, 768 flow [2023-09-01 00:26:41,484 INFO L130 PetriNetUnfolder]: 1117/6169 cut-off events. [2023-09-01 00:26:41,484 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 00:26:41,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7254 conditions, 6169 events. 1117/6169 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 54571 event pairs, 522 based on Foata normal form. 0/4769 useless extension candidates. Maximal degree in co-relation 3711. Up to 1024 conditions per place. [2023-09-01 00:26:41,690 INFO L119 LiptonReduction]: Number of co-enabled transitions 71008 [2023-09-01 00:26:44,967 INFO L134 LiptonReduction]: Checked pairs total: 232810 [2023-09-01 00:26:44,967 INFO L136 LiptonReduction]: Total number of compositions: 200 [2023-09-01 00:26:44,968 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:26:44,969 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;@4848c0a9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:26:44,969 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:26:45,011 INFO L130 PetriNetUnfolder]: 105/518 cut-off events. [2023-09-01 00:26:45,011 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-09-01 00:26:45,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:26:45,011 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:26:45,012 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:26:45,012 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:26:45,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1112483338, now seen corresponding path program 1 times [2023-09-01 00:26:45,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:26:45,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966764551] [2023-09-01 00:26:45,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:26:45,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:26:45,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:26:45,032 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:26:45,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:26:45,061 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:26:45,061 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:26:45,061 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:26:45,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 00:26:45,062 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:26:45,063 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:26:45,064 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:26:45,064 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 00:26:45,095 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 00:26:45,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 305 places, 354 transitions, 852 flow [2023-09-01 00:26:47,196 INFO L130 PetriNetUnfolder]: 2408/12117 cut-off events. [2023-09-01 00:26:47,198 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 00:26:47,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14494 conditions, 12117 events. 2408/12117 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 123311 event pairs, 1291 based on Foata normal form. 0/9423 useless extension candidates. Maximal degree in co-relation 7236. Up to 2304 conditions per place. [2023-09-01 00:26:47,344 INFO L82 GeneralOperation]: Start removeDead. Operand has 305 places, 354 transitions, 852 flow [2023-09-01 00:26:47,413 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 305 places, 354 transitions, 852 flow [2023-09-01 00:26:47,414 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:26:47,414 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 305 places, 354 transitions, 852 flow [2023-09-01 00:26:47,414 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 305 places, 354 transitions, 852 flow [2023-09-01 00:26:47,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 305 places, 354 transitions, 852 flow [2023-09-01 00:26:49,394 INFO L130 PetriNetUnfolder]: 2408/12117 cut-off events. [2023-09-01 00:26:49,394 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 00:26:49,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14494 conditions, 12117 events. 2408/12117 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 123311 event pairs, 1291 based on Foata normal form. 0/9423 useless extension candidates. Maximal degree in co-relation 7236. Up to 2304 conditions per place. [2023-09-01 00:26:49,899 INFO L119 LiptonReduction]: Number of co-enabled transitions 87696 [2023-09-01 00:26:53,425 INFO L134 LiptonReduction]: Checked pairs total: 289043 [2023-09-01 00:26:53,425 INFO L136 LiptonReduction]: Total number of compositions: 215 [2023-09-01 00:26:53,426 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:26:53,427 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;@4848c0a9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:26:53,427 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:26:53,510 INFO L130 PetriNetUnfolder]: 150/713 cut-off events. [2023-09-01 00:26:53,510 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-09-01 00:26:53,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:26:53,510 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:26:53,510 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:26:53,511 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:26:53,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1178616553, now seen corresponding path program 1 times [2023-09-01 00:26:53,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:26:53,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945244302] [2023-09-01 00:26:53,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:26:53,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:26:53,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:26:53,545 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:26:53,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:26:53,572 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:26:53,572 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:26:53,573 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:26:53,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 00:26:53,573 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:26:53,573 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:26:53,573 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:26:53,574 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 00:26:53,615 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 00:26:53,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 330 places, 384 transitions, 938 flow [2023-09-01 00:26:58,014 INFO L130 PetriNetUnfolder]: 5235/24209 cut-off events. [2023-09-01 00:26:58,014 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 00:26:58,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29415 conditions, 24209 events. 5235/24209 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 594. Compared 279435 event pairs, 3084 based on Foata normal form. 0/18941 useless extension candidates. Maximal degree in co-relation 14474. Up to 5120 conditions per place. [2023-09-01 00:26:58,384 INFO L82 GeneralOperation]: Start removeDead. Operand has 330 places, 384 transitions, 938 flow [2023-09-01 00:26:58,564 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 330 places, 384 transitions, 938 flow [2023-09-01 00:26:58,564 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:26:58,564 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 330 places, 384 transitions, 938 flow [2023-09-01 00:26:58,565 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 330 places, 384 transitions, 938 flow [2023-09-01 00:26:58,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 330 places, 384 transitions, 938 flow [2023-09-01 00:27:03,072 INFO L130 PetriNetUnfolder]: 5235/24209 cut-off events. [2023-09-01 00:27:03,072 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 00:27:03,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29415 conditions, 24209 events. 5235/24209 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 594. Compared 279435 event pairs, 3084 based on Foata normal form. 0/18941 useless extension candidates. Maximal degree in co-relation 14474. Up to 5120 conditions per place. [2023-09-01 00:27:04,398 INFO L119 LiptonReduction]: Number of co-enabled transitions 106120 [2023-09-01 00:27:07,815 INFO L134 LiptonReduction]: Checked pairs total: 358551 [2023-09-01 00:27:07,815 INFO L136 LiptonReduction]: Total number of compositions: 227 [2023-09-01 00:27:07,816 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:27:07,817 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;@4848c0a9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:27:07,817 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:27:07,896 INFO L130 PetriNetUnfolder]: 234/1029 cut-off events. [2023-09-01 00:27:07,896 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-09-01 00:27:07,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:27:07,897 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:27:07,897 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:27:07,897 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:27:07,897 INFO L85 PathProgramCache]: Analyzing trace with hash -659935656, now seen corresponding path program 1 times [2023-09-01 00:27:07,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:27:07,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099375516] [2023-09-01 00:27:07,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:27:07,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:27:07,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:27:07,918 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:27:07,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:27:07,940 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:27:07,940 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:27:07,940 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:27:07,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 00:27:07,941 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:27:07,941 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:27:07,941 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:27:07,941 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 00:27:07,969 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 00:27:07,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 355 places, 414 transitions, 1026 flow [2023-09-01 00:27:18,924 INFO L130 PetriNetUnfolder]: 11390/48845 cut-off events. [2023-09-01 00:27:18,924 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 00:27:20,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60209 conditions, 48845 events. 11390/48845 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 1134. Compared 630536 event pairs, 7181 based on Foata normal form. 0/38443 useless extension candidates. Maximal degree in co-relation 29393. Up to 11264 conditions per place. [2023-09-01 00:27:20,962 INFO L82 GeneralOperation]: Start removeDead. Operand has 355 places, 414 transitions, 1026 flow [2023-09-01 00:27:21,798 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 355 places, 414 transitions, 1026 flow [2023-09-01 00:27:21,798 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:27:21,798 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 355 places, 414 transitions, 1026 flow [2023-09-01 00:27:21,798 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 355 places, 414 transitions, 1026 flow [2023-09-01 00:27:21,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 355 places, 414 transitions, 1026 flow [2023-09-01 00:27:31,650 INFO L130 PetriNetUnfolder]: 11390/48845 cut-off events. [2023-09-01 00:27:31,650 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 00:27:33,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60209 conditions, 48845 events. 11390/48845 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 1134. Compared 630536 event pairs, 7181 based on Foata normal form. 0/38443 useless extension candidates. Maximal degree in co-relation 29393. Up to 11264 conditions per place. [2023-09-01 00:27:35,985 INFO L119 LiptonReduction]: Number of co-enabled transitions 126280 [2023-09-01 00:27:39,343 INFO L134 LiptonReduction]: Checked pairs total: 385570 [2023-09-01 00:27:39,344 INFO L136 LiptonReduction]: Total number of compositions: 242 [2023-09-01 00:27:39,345 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:27:39,345 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;@4848c0a9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:27:39,345 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:27:39,483 INFO L130 PetriNetUnfolder]: 360/1482 cut-off events. [2023-09-01 00:27:39,483 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-09-01 00:27:39,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:27:39,483 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:27:39,484 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:27:39,484 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:27:39,484 INFO L85 PathProgramCache]: Analyzing trace with hash 910204360, now seen corresponding path program 1 times [2023-09-01 00:27:39,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:27:39,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668313307] [2023-09-01 00:27:39,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:27:39,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:27:39,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:27:39,526 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:27:39,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:27:39,563 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:27:39,563 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:27:39,563 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:27:39,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 00:27:39,564 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:27:39,566 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:27:39,566 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:27:39,566 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 00:27:39,603 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 00:27:39,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 380 places, 444 transitions, 1116 flow [2023-09-01 00:28:01,605 INFO L130 PetriNetUnfolder]: 24713/99081 cut-off events. [2023-09-01 00:28:01,605 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 00:28:06,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123772 conditions, 99081 events. 24713/99081 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 2195. Compared 1388064 event pairs, 16398 based on Foata normal form. 0/78425 useless extension candidates. Maximal degree in co-relation 60185. Up to 24576 conditions per place. [2023-09-01 00:28:06,841 INFO L82 GeneralOperation]: Start removeDead. Operand has 380 places, 444 transitions, 1116 flow [2023-09-01 00:28:08,104 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 380 places, 444 transitions, 1116 flow [2023-09-01 00:28:08,104 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:28:08,104 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 380 places, 444 transitions, 1116 flow [2023-09-01 00:28:08,104 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 380 places, 444 transitions, 1116 flow [2023-09-01 00:28:08,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 380 places, 444 transitions, 1116 flow [2023-09-01 00:28:31,465 INFO L130 PetriNetUnfolder]: 24713/99081 cut-off events. [2023-09-01 00:28:31,465 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 00:28:36,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123772 conditions, 99081 events. 24713/99081 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 2195. Compared 1388064 event pairs, 16398 based on Foata normal form. 0/78425 useless extension candidates. Maximal degree in co-relation 60185. Up to 24576 conditions per place. [2023-09-01 00:28:44,228 INFO L119 LiptonReduction]: Number of co-enabled transitions 148176 [2023-09-01 00:28:47,662 INFO L134 LiptonReduction]: Checked pairs total: 451327 [2023-09-01 00:28:47,662 INFO L136 LiptonReduction]: Total number of compositions: 260 [2023-09-01 00:28:47,663 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:28:47,664 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;@4848c0a9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:28:47,664 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:28:47,825 INFO L130 PetriNetUnfolder]: 560/2156 cut-off events. [2023-09-01 00:28:47,826 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-09-01 00:28:47,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:28:47,826 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:28:47,826 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:28:47,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:28:47,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1612619442, now seen corresponding path program 1 times [2023-09-01 00:28:47,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:28:47,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418699589] [2023-09-01 00:28:47,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:28:47,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:28:47,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:28:47,858 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:28:47,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:28:47,886 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:28:47,886 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:28:47,887 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:28:47,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 00:28:47,887 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:28:47,890 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:28:47,890 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:28:47,890 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 00:28:47,920 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 00:28:47,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 405 places, 474 transitions, 1208 flow [2023-09-01 00:29:42,358 INFO L130 PetriNetUnfolder]: 53396/201541 cut-off events. [2023-09-01 00:29:42,359 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES.