/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_94-alloc_region_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 02:03:15,350 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 02:03:15,351 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 02:03:15,381 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 02:03:15,382 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 02:03:15,383 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 02:03:15,386 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 02:03:15,387 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 02:03:15,390 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 02:03:15,393 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 02:03:15,394 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 02:03:15,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 02:03:15,395 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 02:03:15,397 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 02:03:15,397 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 02:03:15,398 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 02:03:15,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 02:03:15,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 02:03:15,400 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 02:03:15,404 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 02:03:15,404 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 02:03:15,405 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 02:03:15,406 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 02:03:15,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 02:03:15,410 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 02:03:15,411 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 02:03:15,411 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 02:03:15,412 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 02:03:15,412 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 02:03:15,412 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 02:03:15,412 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 02:03:15,413 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 02:03:15,414 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 02:03:15,414 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 02:03:15,415 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 02:03:15,415 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 02:03:15,415 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 02:03:15,415 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 02:03:15,415 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 02:03:15,416 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 02:03:15,416 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 02:03:15,417 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 02:03:15,436 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 02:03:15,436 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 02:03:15,437 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 02:03:15,437 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 02:03:15,437 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 02:03:15,437 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 02:03:15,437 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 02:03:15,438 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 02:03:15,438 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 02:03:15,438 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 02:03:15,438 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 02:03:15,438 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 02:03:15,438 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 02:03:15,438 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 02:03:15,438 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 02:03:15,439 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 02:03:15,439 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 02:03:15,439 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 02:03:15,439 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 02:03:15,439 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 02:03:15,439 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 02:03:15,439 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 02:03:15,439 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 02:03:15,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 02:03:15,439 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 02:03:15,439 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 02:03:15,439 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 02:03:15,440 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 02:03:15,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 02:03:15,440 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 02:03:15,440 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 02:03:15,440 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 02:03:15,594 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 02:03:15,608 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 02:03:15,610 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 02:03:15,610 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 02:03:15,611 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 02:03:15,612 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_94-alloc_region_racing.i [2023-01-28 02:03:16,512 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 02:03:16,703 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 02:03:16,703 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_94-alloc_region_racing.i [2023-01-28 02:03:16,717 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a76afe0d/c13f9a536da34e38a2d08cc6b5960094/FLAG1c4f7e70f [2023-01-28 02:03:16,725 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a76afe0d/c13f9a536da34e38a2d08cc6b5960094 [2023-01-28 02:03:16,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 02:03:16,727 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 02:03:16,728 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 02:03:16,728 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 02:03:16,734 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 02:03:16,735 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 02:03:16" (1/1) ... [2023-01-28 02:03:16,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2149c956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:03:16, skipping insertion in model container [2023-01-28 02:03:16,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 02:03:16" (1/1) ... [2023-01-28 02:03:16,740 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 02:03:16,780 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 02:03:17,099 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_94-alloc_region_racing.i[58135,58148] [2023-01-28 02:03:17,115 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 02:03:17,124 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 02:03:17,155 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_94-alloc_region_racing.i[58135,58148] [2023-01-28 02:03:17,179 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 02:03:17,253 INFO L208 MainTranslator]: Completed translation [2023-01-28 02:03:17,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:03:17 WrapperNode [2023-01-28 02:03:17,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 02:03:17,254 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 02:03:17,254 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 02:03:17,255 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 02:03:17,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:03:17" (1/1) ... [2023-01-28 02:03:17,283 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:03:17" (1/1) ... [2023-01-28 02:03:17,300 INFO L138 Inliner]: procedures = 377, calls = 72, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 238 [2023-01-28 02:03:17,300 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 02:03:17,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 02:03:17,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 02:03:17,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 02:03:17,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:03:17" (1/1) ... [2023-01-28 02:03:17,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:03:17" (1/1) ... [2023-01-28 02:03:17,309 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:03:17" (1/1) ... [2023-01-28 02:03:17,309 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:03:17" (1/1) ... [2023-01-28 02:03:17,314 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:03:17" (1/1) ... [2023-01-28 02:03:17,317 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:03:17" (1/1) ... [2023-01-28 02:03:17,319 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:03:17" (1/1) ... [2023-01-28 02:03:17,320 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:03:17" (1/1) ... [2023-01-28 02:03:17,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 02:03:17,323 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 02:03:17,323 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 02:03:17,323 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 02:03:17,323 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:03:17" (1/1) ... [2023-01-28 02:03:17,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 02:03:17,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:03:17,360 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) [2023-01-28 02:03:17,379 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 [2023-01-28 02:03:17,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 02:03:17,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-01-28 02:03:17,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 02:03:17,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-01-28 02:03:17,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 02:03:17,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 02:03:17,400 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 02:03:17,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 02:03:17,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 02:03:17,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-01-28 02:03:17,400 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-01-28 02:03:17,400 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-01-28 02:03:17,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 02:03:17,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 02:03:17,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 02:03:17,402 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 02:03:17,524 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 02:03:17,525 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 02:03:17,770 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 02:03:17,777 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 02:03:17,777 INFO L302 CfgBuilder]: Removed 23 assume(true) statements. [2023-01-28 02:03:17,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 02:03:17 BoogieIcfgContainer [2023-01-28 02:03:17,779 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 02:03:17,780 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 02:03:17,780 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 02:03:17,782 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 02:03:17,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 02:03:16" (1/3) ... [2023-01-28 02:03:17,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72e0290e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 02:03:17, skipping insertion in model container [2023-01-28 02:03:17,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:03:17" (2/3) ... [2023-01-28 02:03:17,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72e0290e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 02:03:17, skipping insertion in model container [2023-01-28 02:03:17,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 02:03:17" (3/3) ... [2023-01-28 02:03:17,784 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_94-alloc_region_racing.i [2023-01-28 02:03:17,794 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 02:03:17,794 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-01-28 02:03:17,794 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 02:03:17,889 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-01-28 02:03:17,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 214 places, 240 transitions, 488 flow [2023-01-28 02:03:18,020 INFO L130 PetriNetUnfolder]: 45/343 cut-off events. [2023-01-28 02:03:18,020 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-28 02:03:18,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 343 events. 45/343 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1028 event pairs, 0 based on Foata normal form. 0/292 useless extension candidates. Maximal degree in co-relation 186. Up to 8 conditions per place. [2023-01-28 02:03:18,030 INFO L82 GeneralOperation]: Start removeDead. Operand has 214 places, 240 transitions, 488 flow [2023-01-28 02:03:18,038 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 210 places, 235 transitions, 475 flow [2023-01-28 02:03:18,040 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 02:03:18,055 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 210 places, 235 transitions, 475 flow [2023-01-28 02:03:18,057 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 210 places, 235 transitions, 475 flow [2023-01-28 02:03:18,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 235 transitions, 475 flow [2023-01-28 02:03:18,117 INFO L130 PetriNetUnfolder]: 44/338 cut-off events. [2023-01-28 02:03:18,117 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 02:03:18,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 343 conditions, 338 events. 44/338 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 978 event pairs, 0 based on Foata normal form. 0/287 useless extension candidates. Maximal degree in co-relation 186. Up to 8 conditions per place. [2023-01-28 02:03:18,127 INFO L119 LiptonReduction]: Number of co-enabled transitions 17004 [2023-01-28 02:03:27,203 INFO L134 LiptonReduction]: Checked pairs total: 37879 [2023-01-28 02:03:27,203 INFO L136 LiptonReduction]: Total number of compositions: 182 [2023-01-28 02:03:27,212 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 02:03:27,216 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=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@27a372d2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 02:03:27,216 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 02:03:27,218 INFO L130 PetriNetUnfolder]: 0/12 cut-off events. [2023-01-28 02:03:27,218 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 02:03:27,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:03:27,219 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-01-28 02:03:27,219 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:03:27,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:03:27,222 INFO L85 PathProgramCache]: Analyzing trace with hash 568836363, now seen corresponding path program 1 times [2023-01-28 02:03:27,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:03:27,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602417342] [2023-01-28 02:03:27,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:03:27,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:03:27,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 02:03:27,320 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 02:03:27,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 02:03:27,356 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 02:03:27,361 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 02:03:27,361 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 02:03:27,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 02:03:27,363 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 02:03:27,364 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 02:03:27,365 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 02:03:27,365 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-01-28 02:03:27,399 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 02:03:27,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 283 places, 320 transitions, 658 flow [2023-01-28 02:03:27,478 INFO L130 PetriNetUnfolder]: 76/550 cut-off events. [2023-01-28 02:03:27,478 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-01-28 02:03:27,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 564 conditions, 550 events. 76/550 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2170 event pairs, 0 based on Foata normal form. 0/465 useless extension candidates. Maximal degree in co-relation 345. Up to 12 conditions per place. [2023-01-28 02:03:27,481 INFO L82 GeneralOperation]: Start removeDead. Operand has 283 places, 320 transitions, 658 flow [2023-01-28 02:03:27,485 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 283 places, 320 transitions, 658 flow [2023-01-28 02:03:27,485 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 02:03:27,485 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 283 places, 320 transitions, 658 flow [2023-01-28 02:03:27,485 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 283 places, 320 transitions, 658 flow [2023-01-28 02:03:27,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 283 places, 320 transitions, 658 flow [2023-01-28 02:03:27,540 INFO L130 PetriNetUnfolder]: 76/550 cut-off events. [2023-01-28 02:03:27,540 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-01-28 02:03:27,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 564 conditions, 550 events. 76/550 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2170 event pairs, 0 based on Foata normal form. 0/465 useless extension candidates. Maximal degree in co-relation 345. Up to 12 conditions per place. [2023-01-28 02:03:27,567 INFO L119 LiptonReduction]: Number of co-enabled transitions 47892 [2023-01-28 02:03:35,463 INFO L134 LiptonReduction]: Checked pairs total: 110000 [2023-01-28 02:03:35,463 INFO L136 LiptonReduction]: Total number of compositions: 238 [2023-01-28 02:03:35,465 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 02:03:35,465 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=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@27a372d2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 02:03:35,465 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 02:03:35,469 INFO L130 PetriNetUnfolder]: 0/35 cut-off events. [2023-01-28 02:03:35,469 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 02:03:35,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:03:35,469 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-01-28 02:03:35,469 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:03:35,469 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:03:35,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1595964270, now seen corresponding path program 1 times [2023-01-28 02:03:35,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:03:35,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074245719] [2023-01-28 02:03:35,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:03:35,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:03:35,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 02:03:35,520 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 02:03:35,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 02:03:35,555 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 02:03:35,556 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 02:03:35,556 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 02:03:35,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 02:03:35,556 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 02:03:35,556 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 02:03:35,556 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 02:03:35,556 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-01-28 02:03:35,580 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 02:03:35,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 352 places, 400 transitions, 830 flow [2023-01-28 02:03:35,668 INFO L130 PetriNetUnfolder]: 112/788 cut-off events. [2023-01-28 02:03:35,668 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-01-28 02:03:35,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 816 conditions, 788 events. 112/788 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3603 event pairs, 1 based on Foata normal form. 0/665 useless extension candidates. Maximal degree in co-relation 558. Up to 16 conditions per place. [2023-01-28 02:03:35,676 INFO L82 GeneralOperation]: Start removeDead. Operand has 352 places, 400 transitions, 830 flow [2023-01-28 02:03:35,683 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 352 places, 400 transitions, 830 flow [2023-01-28 02:03:35,684 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 02:03:35,687 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 352 places, 400 transitions, 830 flow [2023-01-28 02:03:35,687 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 352 places, 400 transitions, 830 flow [2023-01-28 02:03:35,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 352 places, 400 transitions, 830 flow [2023-01-28 02:03:35,769 INFO L130 PetriNetUnfolder]: 112/788 cut-off events. [2023-01-28 02:03:35,769 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-01-28 02:03:35,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 816 conditions, 788 events. 112/788 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3603 event pairs, 1 based on Foata normal form. 0/665 useless extension candidates. Maximal degree in co-relation 558. Up to 16 conditions per place. [2023-01-28 02:03:35,827 INFO L119 LiptonReduction]: Number of co-enabled transitions 90792 [2023-01-28 02:03:45,287 INFO L134 LiptonReduction]: Checked pairs total: 213925 [2023-01-28 02:03:45,288 INFO L136 LiptonReduction]: Total number of compositions: 287 [2023-01-28 02:03:45,290 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 02:03:45,291 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=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@27a372d2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 02:03:45,291 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 02:03:45,298 INFO L130 PetriNetUnfolder]: 11/90 cut-off events. [2023-01-28 02:03:45,298 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-01-28 02:03:45,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:03:45,298 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-01-28 02:03:45,302 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:03:45,302 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:03:45,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1447458529, now seen corresponding path program 1 times [2023-01-28 02:03:45,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:03:45,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475143973] [2023-01-28 02:03:45,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:03:45,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:03:45,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 02:03:45,331 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 02:03:45,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 02:03:45,353 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 02:03:45,353 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 02:03:45,353 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 02:03:45,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 02:03:45,353 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 02:03:45,354 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 02:03:45,354 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 02:03:45,354 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-01-28 02:03:45,389 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-28 02:03:45,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 421 places, 480 transitions, 1004 flow [2023-01-28 02:03:45,527 INFO L130 PetriNetUnfolder]: 160/1090 cut-off events. [2023-01-28 02:03:45,528 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-01-28 02:03:45,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1145 conditions, 1090 events. 160/1090 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 5407 event pairs, 6 based on Foata normal form. 0/921 useless extension candidates. Maximal degree in co-relation 808. Up to 32 conditions per place. [2023-01-28 02:03:45,542 INFO L82 GeneralOperation]: Start removeDead. Operand has 421 places, 480 transitions, 1004 flow [2023-01-28 02:03:45,552 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 421 places, 480 transitions, 1004 flow [2023-01-28 02:03:45,552 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 02:03:45,553 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 421 places, 480 transitions, 1004 flow [2023-01-28 02:03:45,553 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 421 places, 480 transitions, 1004 flow [2023-01-28 02:03:45,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 421 places, 480 transitions, 1004 flow [2023-01-28 02:03:45,690 INFO L130 PetriNetUnfolder]: 160/1090 cut-off events. [2023-01-28 02:03:45,690 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-01-28 02:03:45,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1145 conditions, 1090 events. 160/1090 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 5407 event pairs, 6 based on Foata normal form. 0/921 useless extension candidates. Maximal degree in co-relation 808. Up to 32 conditions per place. [2023-01-28 02:03:45,807 INFO L119 LiptonReduction]: Number of co-enabled transitions 146328 [2023-01-28 02:03:55,305 INFO L134 LiptonReduction]: Checked pairs total: 353513 [2023-01-28 02:03:55,305 INFO L136 LiptonReduction]: Total number of compositions: 342 [2023-01-28 02:03:55,306 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 02:03:55,307 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=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@27a372d2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 02:03:55,307 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 02:03:55,317 INFO L130 PetriNetUnfolder]: 39/175 cut-off events. [2023-01-28 02:03:55,317 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2023-01-28 02:03:55,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:03:55,317 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-01-28 02:03:55,317 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:03:55,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:03:55,317 INFO L85 PathProgramCache]: Analyzing trace with hash 718039777, now seen corresponding path program 1 times [2023-01-28 02:03:55,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:03:55,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462013882] [2023-01-28 02:03:55,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:03:55,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:03:55,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 02:03:55,348 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 02:03:55,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 02:03:55,373 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 02:03:55,373 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 02:03:55,373 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 02:03:55,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 02:03:55,374 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 02:03:55,374 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 02:03:55,374 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 02:03:55,374 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-01-28 02:03:55,408 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-01-28 02:03:55,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 490 places, 560 transitions, 1180 flow [2023-01-28 02:03:55,666 INFO L130 PetriNetUnfolder]: 236/1524 cut-off events. [2023-01-28 02:03:55,666 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-01-28 02:03:55,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1635 conditions, 1524 events. 236/1524 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 8339 event pairs, 23 based on Foata normal form. 0/1293 useless extension candidates. Maximal degree in co-relation 1135. Up to 80 conditions per place. [2023-01-28 02:03:55,682 INFO L82 GeneralOperation]: Start removeDead. Operand has 490 places, 560 transitions, 1180 flow [2023-01-28 02:03:55,692 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 490 places, 560 transitions, 1180 flow [2023-01-28 02:03:55,692 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 02:03:55,692 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 490 places, 560 transitions, 1180 flow [2023-01-28 02:03:55,692 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 490 places, 560 transitions, 1180 flow [2023-01-28 02:03:55,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 490 places, 560 transitions, 1180 flow [2023-01-28 02:03:55,921 INFO L130 PetriNetUnfolder]: 236/1524 cut-off events. [2023-01-28 02:03:55,921 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-01-28 02:03:55,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1635 conditions, 1524 events. 236/1524 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 8339 event pairs, 23 based on Foata normal form. 0/1293 useless extension candidates. Maximal degree in co-relation 1135. Up to 80 conditions per place. [2023-01-28 02:03:56,023 INFO L119 LiptonReduction]: Number of co-enabled transitions 214500 [2023-01-28 02:04:07,374 INFO L134 LiptonReduction]: Checked pairs total: 522889 [2023-01-28 02:04:07,374 INFO L136 LiptonReduction]: Total number of compositions: 401 [2023-01-28 02:04:07,376 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 02:04:07,376 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=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@27a372d2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 02:04:07,376 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 02:04:07,393 INFO L130 PetriNetUnfolder]: 60/255 cut-off events. [2023-01-28 02:04:07,393 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2023-01-28 02:04:07,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:04:07,393 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:04:07,393 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:04:07,394 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:04:07,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1326993760, now seen corresponding path program 1 times [2023-01-28 02:04:07,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:04:07,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327014299] [2023-01-28 02:04:07,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:04:07,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:04:07,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 02:04:07,442 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 02:04:07,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 02:04:07,486 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 02:04:07,486 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 02:04:07,486 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 02:04:07,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 02:04:07,486 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 02:04:07,487 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 02:04:07,487 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 02:04:07,487 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-01-28 02:04:07,524 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-01-28 02:04:07,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 559 places, 640 transitions, 1358 flow [2023-01-28 02:04:07,937 INFO L130 PetriNetUnfolder]: 376/2230 cut-off events. [2023-01-28 02:04:07,937 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-01-28 02:04:07,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2462 conditions, 2230 events. 376/2230 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 13425 event pairs, 72 based on Foata normal form. 0/1905 useless extension candidates. Maximal degree in co-relation 1623. Up to 192 conditions per place. [2023-01-28 02:04:07,983 INFO L82 GeneralOperation]: Start removeDead. Operand has 559 places, 640 transitions, 1358 flow [2023-01-28 02:04:08,003 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 559 places, 640 transitions, 1358 flow [2023-01-28 02:04:08,004 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 02:04:08,004 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 559 places, 640 transitions, 1358 flow [2023-01-28 02:04:08,004 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 559 places, 640 transitions, 1358 flow [2023-01-28 02:04:08,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 559 places, 640 transitions, 1358 flow [2023-01-28 02:04:08,424 INFO L130 PetriNetUnfolder]: 376/2230 cut-off events. [2023-01-28 02:04:08,424 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-01-28 02:04:08,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2462 conditions, 2230 events. 376/2230 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 13425 event pairs, 72 based on Foata normal form. 0/1905 useless extension candidates. Maximal degree in co-relation 1623. Up to 192 conditions per place. [2023-01-28 02:04:08,613 INFO L119 LiptonReduction]: Number of co-enabled transitions 295308 [2023-01-28 02:04:20,029 INFO L134 LiptonReduction]: Checked pairs total: 668378 [2023-01-28 02:04:20,030 INFO L136 LiptonReduction]: Total number of compositions: 459 [2023-01-28 02:04:20,032 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 02:04:20,033 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=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@27a372d2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 02:04:20,033 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 02:04:20,055 INFO L130 PetriNetUnfolder]: 86/339 cut-off events. [2023-01-28 02:04:20,055 INFO L131 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2023-01-28 02:04:20,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:04:20,055 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:04:20,055 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:04:20,056 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:04:20,056 INFO L85 PathProgramCache]: Analyzing trace with hash 624786103, now seen corresponding path program 1 times [2023-01-28 02:04:20,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:04:20,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540985067] [2023-01-28 02:04:20,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:04:20,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:04:20,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 02:04:20,082 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 02:04:20,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 02:04:20,112 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 02:04:20,112 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 02:04:20,112 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 02:04:20,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 02:04:20,112 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 02:04:20,115 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 02:04:20,115 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 02:04:20,115 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-01-28 02:04:20,165 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-01-28 02:04:20,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 628 places, 720 transitions, 1538 flow [2023-01-28 02:04:21,087 INFO L130 PetriNetUnfolder]: 660/3496 cut-off events. [2023-01-28 02:04:21,088 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-01-28 02:04:21,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3994 conditions, 3496 events. 660/3496 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 23755 event pairs, 201 based on Foata normal form. 0/3013 useless extension candidates. Maximal degree in co-relation 2448. Up to 448 conditions per place. [2023-01-28 02:04:21,142 INFO L82 GeneralOperation]: Start removeDead. Operand has 628 places, 720 transitions, 1538 flow [2023-01-28 02:04:21,173 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 628 places, 720 transitions, 1538 flow [2023-01-28 02:04:21,173 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 02:04:21,173 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 628 places, 720 transitions, 1538 flow [2023-01-28 02:04:21,174 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 628 places, 720 transitions, 1538 flow [2023-01-28 02:04:21,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 628 places, 720 transitions, 1538 flow [2023-01-28 02:04:22,011 INFO L130 PetriNetUnfolder]: 660/3496 cut-off events. [2023-01-28 02:04:22,011 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-01-28 02:04:22,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3994 conditions, 3496 events. 660/3496 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 23755 event pairs, 201 based on Foata normal form. 0/3013 useless extension candidates. Maximal degree in co-relation 2448. Up to 448 conditions per place. [2023-01-28 02:04:22,350 INFO L119 LiptonReduction]: Number of co-enabled transitions 388752 [2023-01-28 02:04:34,706 INFO L134 LiptonReduction]: Checked pairs total: 988846 [2023-01-28 02:04:34,706 INFO L136 LiptonReduction]: Total number of compositions: 504 [2023-01-28 02:04:34,707 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 02:04:34,708 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=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@27a372d2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 02:04:34,708 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 02:04:34,738 INFO L130 PetriNetUnfolder]: 107/423 cut-off events. [2023-01-28 02:04:34,738 INFO L131 PetriNetUnfolder]: For 87/87 co-relation queries the response was YES. [2023-01-28 02:04:34,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:04:34,738 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:04:34,739 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:04:34,739 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:04:34,739 INFO L85 PathProgramCache]: Analyzing trace with hash -534755220, now seen corresponding path program 1 times [2023-01-28 02:04:34,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:04:34,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865405611] [2023-01-28 02:04:34,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:04:34,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:04:34,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 02:04:34,759 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 02:04:34,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 02:04:34,779 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 02:04:34,780 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 02:04:34,780 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 02:04:34,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 02:04:34,780 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 02:04:34,780 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 02:04:34,782 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 02:04:34,782 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-01-28 02:04:34,829 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-01-28 02:04:34,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 697 places, 800 transitions, 1720 flow [2023-01-28 02:04:36,618 INFO L130 PetriNetUnfolder]: 1264/5914 cut-off events. [2023-01-28 02:04:36,619 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-01-28 02:04:36,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6999 conditions, 5914 events. 1264/5914 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 45912 event pairs, 522 based on Foata normal form. 0/5145 useless extension candidates. Maximal degree in co-relation 3978. Up to 1024 conditions per place. [2023-01-28 02:04:36,734 INFO L82 GeneralOperation]: Start removeDead. Operand has 697 places, 800 transitions, 1720 flow [2023-01-28 02:04:36,833 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 697 places, 800 transitions, 1720 flow [2023-01-28 02:04:36,833 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 02:04:36,834 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 697 places, 800 transitions, 1720 flow [2023-01-28 02:04:36,834 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 697 places, 800 transitions, 1720 flow [2023-01-28 02:04:36,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 697 places, 800 transitions, 1720 flow [2023-01-28 02:04:38,583 INFO L130 PetriNetUnfolder]: 1264/5914 cut-off events. [2023-01-28 02:04:38,584 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-01-28 02:04:38,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6999 conditions, 5914 events. 1264/5914 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 45912 event pairs, 522 based on Foata normal form. 0/5145 useless extension candidates. Maximal degree in co-relation 3978. Up to 1024 conditions per place. [2023-01-28 02:04:39,235 INFO L119 LiptonReduction]: Number of co-enabled transitions 494832 [2023-01-28 02:04:51,991 INFO L134 LiptonReduction]: Checked pairs total: 1236401 [2023-01-28 02:04:51,991 INFO L136 LiptonReduction]: Total number of compositions: 561 [2023-01-28 02:04:51,993 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 02:04:51,993 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=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@27a372d2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 02:04:51,993 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 02:04:52,042 INFO L130 PetriNetUnfolder]: 142/526 cut-off events. [2023-01-28 02:04:52,042 INFO L131 PetriNetUnfolder]: For 128/128 co-relation queries the response was YES. [2023-01-28 02:04:52,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:04:52,042 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:04:52,043 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:04:52,043 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:04:52,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1487066408, now seen corresponding path program 1 times [2023-01-28 02:04:52,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:04:52,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139614931] [2023-01-28 02:04:52,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:04:52,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:04:52,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 02:04:52,084 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 02:04:52,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 02:04:52,110 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 02:04:52,111 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 02:04:52,111 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 02:04:52,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 02:04:52,111 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 02:04:52,111 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 02:04:52,111 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 02:04:52,111 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-01-28 02:04:52,171 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-01-28 02:04:52,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 766 places, 880 transitions, 1904 flow [2023-01-28 02:04:56,143 INFO L130 PetriNetUnfolder]: 2572/10700 cut-off events. [2023-01-28 02:04:56,143 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-01-28 02:04:56,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13077 conditions, 10700 events. 2572/10700 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 94355 event pairs, 1291 based on Foata normal form. 0/9389 useless extension candidates. Maximal degree in co-relation 6981. Up to 2304 conditions per place. [2023-01-28 02:04:56,379 INFO L82 GeneralOperation]: Start removeDead. Operand has 766 places, 880 transitions, 1904 flow [2023-01-28 02:04:56,532 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 766 places, 880 transitions, 1904 flow [2023-01-28 02:04:56,532 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 02:04:56,532 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 766 places, 880 transitions, 1904 flow [2023-01-28 02:04:56,532 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 766 places, 880 transitions, 1904 flow [2023-01-28 02:04:56,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 766 places, 880 transitions, 1904 flow [2023-01-28 02:05:00,226 INFO L130 PetriNetUnfolder]: 2572/10700 cut-off events. [2023-01-28 02:05:00,227 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-01-28 02:05:00,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13077 conditions, 10700 events. 2572/10700 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 94355 event pairs, 1291 based on Foata normal form. 0/9389 useless extension candidates. Maximal degree in co-relation 6981. Up to 2304 conditions per place. [2023-01-28 02:05:01,446 INFO L119 LiptonReduction]: Number of co-enabled transitions 613548 [2023-01-28 02:05:14,407 INFO L134 LiptonReduction]: Checked pairs total: 1567615 [2023-01-28 02:05:14,407 INFO L136 LiptonReduction]: Total number of compositions: 614 [2023-01-28 02:05:14,409 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 02:05:14,409 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=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@27a372d2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 02:05:14,409 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 02:05:14,462 INFO L130 PetriNetUnfolder]: 162/616 cut-off events. [2023-01-28 02:05:14,462 INFO L131 PetriNetUnfolder]: For 182/182 co-relation queries the response was YES. [2023-01-28 02:05:14,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:05:14,462 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:05:14,462 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:05:14,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:05:14,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1770291439, now seen corresponding path program 1 times [2023-01-28 02:05:14,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:05:14,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124183513] [2023-01-28 02:05:14,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:05:14,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:05:14,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 02:05:14,487 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 02:05:14,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 02:05:14,508 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 02:05:14,509 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 02:05:14,509 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 02:05:14,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 02:05:14,509 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 02:05:14,509 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 02:05:14,509 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 02:05:14,509 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-01-28 02:05:14,569 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-01-28 02:05:14,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 835 places, 960 transitions, 2090 flow [2023-01-28 02:05:22,394 INFO L130 PetriNetUnfolder]: 5416/20350 cut-off events. [2023-01-28 02:05:22,394 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-01-28 02:05:22,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25556 conditions, 20350 events. 5416/20350 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 203803 event pairs, 3084 based on Foata normal form. 0/17985 useless extension candidates. Maximal degree in co-relation 13057. Up to 5120 conditions per place. [2023-01-28 02:05:22,922 INFO L82 GeneralOperation]: Start removeDead. Operand has 835 places, 960 transitions, 2090 flow [2023-01-28 02:05:23,286 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 835 places, 960 transitions, 2090 flow [2023-01-28 02:05:23,286 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 02:05:23,286 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 835 places, 960 transitions, 2090 flow [2023-01-28 02:05:23,286 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 835 places, 960 transitions, 2090 flow [2023-01-28 02:05:23,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 835 places, 960 transitions, 2090 flow [2023-01-28 02:05:31,055 INFO L130 PetriNetUnfolder]: 5416/20350 cut-off events. [2023-01-28 02:05:31,056 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-01-28 02:05:31,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25556 conditions, 20350 events. 5416/20350 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 203803 event pairs, 3084 based on Foata normal form. 0/17985 useless extension candidates. Maximal degree in co-relation 13057. Up to 5120 conditions per place. [2023-01-28 02:05:33,731 INFO L119 LiptonReduction]: Number of co-enabled transitions 744900 [2023-01-28 02:05:47,858 INFO L134 LiptonReduction]: Checked pairs total: 1876543 [2023-01-28 02:05:47,858 INFO L136 LiptonReduction]: Total number of compositions: 669 [2023-01-28 02:05:47,859 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 02:05:47,859 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=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@27a372d2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 02:05:47,859 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 02:05:47,930 INFO L130 PetriNetUnfolder]: 191/717 cut-off events. [2023-01-28 02:05:47,930 INFO L131 PetriNetUnfolder]: For 246/246 co-relation queries the response was YES. [2023-01-28 02:05:47,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:05:47,931 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:05:47,931 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:05:47,931 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:05:47,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1633503645, now seen corresponding path program 1 times [2023-01-28 02:05:47,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:05:47,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466966455] [2023-01-28 02:05:47,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:05:47,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:05:47,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 02:05:47,972 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 02:05:47,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 02:05:47,996 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 02:05:47,996 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 02:05:47,996 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 02:05:47,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 02:05:47,997 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 02:05:47,997 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 02:05:47,997 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 02:05:47,997 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-01-28 02:05:48,048 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-01-28 02:05:48,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 904 places, 1040 transitions, 2278 flow [2023-01-28 02:06:05,031 INFO L130 PetriNetUnfolder]: 11588/39984 cut-off events. [2023-01-28 02:06:05,031 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-01-28 02:06:06,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51348 conditions, 39984 events. 11588/39984 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 688. Compared 445810 event pairs, 7181 based on Foata normal form. 0/35541 useless extension candidates. Maximal degree in co-relation 25534. Up to 11264 conditions per place. [2023-01-28 02:06:06,494 INFO L82 GeneralOperation]: Start removeDead. Operand has 904 places, 1040 transitions, 2278 flow [2023-01-28 02:06:07,634 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 904 places, 1040 transitions, 2278 flow [2023-01-28 02:06:07,635 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 02:06:07,635 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 904 places, 1040 transitions, 2278 flow [2023-01-28 02:06:07,635 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 904 places, 1040 transitions, 2278 flow [2023-01-28 02:06:07,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 904 places, 1040 transitions, 2278 flow [2023-01-28 02:06:25,763 INFO L130 PetriNetUnfolder]: 11588/39984 cut-off events. [2023-01-28 02:06:25,763 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-01-28 02:06:27,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51348 conditions, 39984 events. 11588/39984 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 688. Compared 445810 event pairs, 7181 based on Foata normal form. 0/35541 useless extension candidates. Maximal degree in co-relation 25534. Up to 11264 conditions per place. [2023-01-28 02:06:31,451 INFO L119 LiptonReduction]: Number of co-enabled transitions 888888 [2023-01-28 02:06:45,767 INFO L134 LiptonReduction]: Checked pairs total: 2247310 [2023-01-28 02:06:45,767 INFO L136 LiptonReduction]: Total number of compositions: 719 [2023-01-28 02:06:45,768 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 02:06:45,769 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=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@27a372d2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 02:06:45,769 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 02:06:45,857 INFO L130 PetriNetUnfolder]: 230/833 cut-off events. [2023-01-28 02:06:45,857 INFO L131 PetriNetUnfolder]: For 325/325 co-relation queries the response was YES. [2023-01-28 02:06:45,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:06:45,857 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:06:45,857 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:06:45,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:06:45,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1434713509, now seen corresponding path program 1 times [2023-01-28 02:06:45,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:06:45,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651283465] [2023-01-28 02:06:45,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:06:45,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:06:45,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 02:06:45,891 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 02:06:45,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 02:06:45,917 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 02:06:45,917 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 02:06:45,917 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 02:06:45,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 02:06:45,917 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 02:06:45,918 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 02:06:45,918 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 02:06:45,918 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-01-28 02:06:45,972 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-01-28 02:06:45,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 973 places, 1120 transitions, 2468 flow [2023-01-28 02:07:22,679 INFO L130 PetriNetUnfolder]: 24928/80098 cut-off events. [2023-01-28 02:07:22,680 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-01-28 02:07:27,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104789 conditions, 80098 events. 24928/80098 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1311. Compared 972962 event pairs, 16398 based on Foata normal form. 0/71529 useless extension candidates. Maximal degree in co-relation 51324. Up to 24576 conditions per place. [2023-01-28 02:07:27,872 INFO L82 GeneralOperation]: Start removeDead. Operand has 973 places, 1120 transitions, 2468 flow [2023-01-28 02:07:30,298 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 973 places, 1120 transitions, 2468 flow [2023-01-28 02:07:30,299 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 02:07:30,299 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 973 places, 1120 transitions, 2468 flow [2023-01-28 02:07:30,299 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 973 places, 1120 transitions, 2468 flow [2023-01-28 02:07:30,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 973 places, 1120 transitions, 2468 flow [2023-01-28 02:08:07,096 INFO L130 PetriNetUnfolder]: 24928/80098 cut-off events. [2023-01-28 02:08:07,096 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-01-28 02:08:12,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104789 conditions, 80098 events. 24928/80098 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1311. Compared 972962 event pairs, 16398 based on Foata normal form. 0/71529 useless extension candidates. Maximal degree in co-relation 51324. Up to 24576 conditions per place. [2023-01-28 02:08:22,680 INFO L119 LiptonReduction]: Number of co-enabled transitions 1045512 [2023-01-28 02:08:38,139 INFO L134 LiptonReduction]: Checked pairs total: 2668987 [2023-01-28 02:08:38,139 INFO L136 LiptonReduction]: Total number of compositions: 781 [2023-01-28 02:08:38,141 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 02:08:38,141 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=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@27a372d2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 02:08:38,141 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 02:08:38,256 INFO L130 PetriNetUnfolder]: 276/969 cut-off events. [2023-01-28 02:08:38,256 INFO L131 PetriNetUnfolder]: For 447/447 co-relation queries the response was YES. [2023-01-28 02:08:38,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:08:38,256 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:08:38,257 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:08:38,257 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:08:38,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1253916555, now seen corresponding path program 1 times [2023-01-28 02:08:38,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:08:38,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936565687] [2023-01-28 02:08:38,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:08:38,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:08:38,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 02:08:38,293 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 02:08:38,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 02:08:38,325 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 02:08:38,325 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 02:08:38,325 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 02:08:38,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 02:08:38,326 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 02:08:38,328 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 02:08:38,328 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 02:08:38,328 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-01-28 02:08:38,406 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-01-28 02:08:38,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1042 places, 1200 transitions, 2660 flow