/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_03-munge_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 01:29:21,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 01:29:21,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 01:29:21,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-01-28 01:29:21,250 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 01:29:21,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 01:29:21,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 01:29:21,257 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 01:29:21,258 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 01:29:21,258 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 01:29:21,260 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 01:29:21,265 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 01:29:21,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 01:29:21,267 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 01:29:21,269 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 01:29:21,270 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 01:29:21,276 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 01:29:21,283 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 01:29:21,283 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 01:29:21,284 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 01:29:21,285 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 01:29:21,311 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 01:29:21,311 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 01:29:21,313 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 01:29:21,313 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 01:29:21,314 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 01:29:21,314 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 01:29:21,314 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 01:29:21,314 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 01:29:21,314 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 01:29:21,314 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 01:29:21,315 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 01:29:21,315 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 01:29:21,315 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 01:29:21,316 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 01:29:21,316 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 01:29:21,316 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 01:29:21,316 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 01:29:21,316 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 01:29:21,316 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 01:29:21,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 01:29:21,316 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 01:29:21,317 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 01:29:21,317 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 01:29:21,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:29:21,317 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 01:29:21,317 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 01:29:21,317 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 01:29:21,317 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 01:29:21,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 01:29:21,318 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 01:29:21,318 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 01:29:21,318 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 01:29:21,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 01:29:21,563 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 01:29:21,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 01:29:21,566 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 01:29:21,566 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 01:29:21,567 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_03-munge_racing.i [2023-01-28 01:29:22,671 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 01:29:22,936 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 01:29:22,937 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_03-munge_racing.i [2023-01-28 01:29:22,954 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afbad04c6/2abcde8d04a841d1b58562252b607352/FLAGef503f55f [2023-01-28 01:29:22,967 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afbad04c6/2abcde8d04a841d1b58562252b607352 [2023-01-28 01:29:22,970 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 01:29:22,971 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 01:29:22,972 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 01:29:22,972 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 01:29:22,976 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 01:29:22,977 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:29:22" (1/1) ... [2023-01-28 01:29:22,978 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@746b79b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:22, skipping insertion in model container [2023-01-28 01:29:22,978 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:29:22" (1/1) ... [2023-01-28 01:29:22,983 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 01:29:23,025 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 01:29:23,238 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_03-munge_racing.i[30176,30189] [2023-01-28 01:29:23,263 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:29:23,274 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 01:29:23,302 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_03-munge_racing.i[30176,30189] [2023-01-28 01:29:23,310 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:29:23,338 INFO L208 MainTranslator]: Completed translation [2023-01-28 01:29:23,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:23 WrapperNode [2023-01-28 01:29:23,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 01:29:23,341 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 01:29:23,341 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 01:29:23,341 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 01:29:23,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:23" (1/1) ... [2023-01-28 01:29:23,375 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:23" (1/1) ... [2023-01-28 01:29:23,405 INFO L138 Inliner]: procedures = 172, calls = 43, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 201 [2023-01-28 01:29:23,406 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 01:29:23,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 01:29:23,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 01:29:23,407 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 01:29:23,413 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:23" (1/1) ... [2023-01-28 01:29:23,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:23" (1/1) ... [2023-01-28 01:29:23,426 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:23" (1/1) ... [2023-01-28 01:29:23,427 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:23" (1/1) ... [2023-01-28 01:29:23,432 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:23" (1/1) ... [2023-01-28 01:29:23,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:23" (1/1) ... [2023-01-28 01:29:23,453 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:23" (1/1) ... [2023-01-28 01:29:23,455 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:23" (1/1) ... [2023-01-28 01:29:23,464 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 01:29:23,465 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 01:29:23,465 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 01:29:23,465 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 01:29:23,466 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:23" (1/1) ... [2023-01-28 01:29:23,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:29:23,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 01:29:23,502 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 01:29:23,528 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 01:29:23,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 01:29:23,544 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-01-28 01:29:23,545 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-01-28 01:29:23,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 01:29:23,545 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 01:29:23,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 01:29:23,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 01:29:23,545 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-01-28 01:29:23,545 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-01-28 01:29:23,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 01:29:23,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 01:29:23,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 01:29:23,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 01:29:23,547 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 01:29:23,722 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 01:29:23,724 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 01:29:23,999 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 01:29:24,007 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 01:29:24,007 INFO L302 CfgBuilder]: Removed 24 assume(true) statements. [2023-01-28 01:29:24,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:29:24 BoogieIcfgContainer [2023-01-28 01:29:24,009 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 01:29:24,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 01:29:24,011 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 01:29:24,014 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 01:29:24,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 01:29:22" (1/3) ... [2023-01-28 01:29:24,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32169724 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:29:24, skipping insertion in model container [2023-01-28 01:29:24,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:23" (2/3) ... [2023-01-28 01:29:24,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32169724 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:29:24, skipping insertion in model container [2023-01-28 01:29:24,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:29:24" (3/3) ... [2023-01-28 01:29:24,015 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_03-munge_racing.i [2023-01-28 01:29:24,029 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 01:29:24,030 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-01-28 01:29:24,030 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 01:29:24,141 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-28 01:29:24,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 198 transitions, 418 flow [2023-01-28 01:29:24,284 INFO L130 PetriNetUnfolder]: 58/356 cut-off events. [2023-01-28 01:29:24,285 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-01-28 01:29:24,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 376 conditions, 356 events. 58/356 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1472 event pairs, 0 based on Foata normal form. 0/289 useless extension candidates. Maximal degree in co-relation 189. Up to 8 conditions per place. [2023-01-28 01:29:24,303 INFO L82 GeneralOperation]: Start removeDead. Operand has 171 places, 198 transitions, 418 flow [2023-01-28 01:29:24,309 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 171 places, 198 transitions, 418 flow [2023-01-28 01:29:24,311 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:29:24,327 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 171 places, 198 transitions, 418 flow [2023-01-28 01:29:24,329 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 171 places, 198 transitions, 418 flow [2023-01-28 01:29:24,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 198 transitions, 418 flow [2023-01-28 01:29:24,400 INFO L130 PetriNetUnfolder]: 58/356 cut-off events. [2023-01-28 01:29:24,400 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-01-28 01:29:24,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 376 conditions, 356 events. 58/356 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1472 event pairs, 0 based on Foata normal form. 0/289 useless extension candidates. Maximal degree in co-relation 189. Up to 8 conditions per place. [2023-01-28 01:29:24,413 INFO L119 LiptonReduction]: Number of co-enabled transitions 15876 [2023-01-28 01:29:28,038 INFO L134 LiptonReduction]: Checked pairs total: 30997 [2023-01-28 01:29:28,038 INFO L136 LiptonReduction]: Total number of compositions: 140 [2023-01-28 01:29:28,050 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:29:28,056 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;@6940ef57, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:29:28,057 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-01-28 01:29:28,060 INFO L130 PetriNetUnfolder]: 1/21 cut-off events. [2023-01-28 01:29:28,060 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:29:28,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:29:28,061 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-01-28 01:29:28,062 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:29:28,066 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:29:28,066 INFO L85 PathProgramCache]: Analyzing trace with hash -2102750666, now seen corresponding path program 1 times [2023-01-28 01:29:28,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:29:28,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455090405] [2023-01-28 01:29:28,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:29:28,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:29:28,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:29:28,180 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:29:28,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:29:28,222 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:29:28,224 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:29:28,225 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-01-28 01:29:28,226 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-01-28 01:29:28,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 01:29:28,227 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:29:28,229 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-01-28 01:29:28,230 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:29:28,230 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-01-28 01:29:28,276 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-01-28 01:29:28,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 312 transitions, 672 flow [2023-01-28 01:29:28,457 INFO L130 PetriNetUnfolder]: 197/1044 cut-off events. [2023-01-28 01:29:28,458 INFO L131 PetriNetUnfolder]: For 72/75 co-relation queries the response was YES. [2023-01-28 01:29:28,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1141 conditions, 1044 events. 197/1044 cut-off events. For 72/75 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 6019 event pairs, 1 based on Foata normal form. 0/852 useless extension candidates. Maximal degree in co-relation 645. Up to 32 conditions per place. [2023-01-28 01:29:28,473 INFO L82 GeneralOperation]: Start removeDead. Operand has 261 places, 312 transitions, 672 flow [2023-01-28 01:29:28,484 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 261 places, 312 transitions, 672 flow [2023-01-28 01:29:28,484 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:29:28,484 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 261 places, 312 transitions, 672 flow [2023-01-28 01:29:28,485 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 261 places, 312 transitions, 672 flow [2023-01-28 01:29:28,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 312 transitions, 672 flow [2023-01-28 01:29:28,660 INFO L130 PetriNetUnfolder]: 197/1044 cut-off events. [2023-01-28 01:29:28,661 INFO L131 PetriNetUnfolder]: For 72/75 co-relation queries the response was YES. [2023-01-28 01:29:28,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1141 conditions, 1044 events. 197/1044 cut-off events. For 72/75 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 6019 event pairs, 1 based on Foata normal form. 0/852 useless extension candidates. Maximal degree in co-relation 645. Up to 32 conditions per place. [2023-01-28 01:29:28,717 INFO L119 LiptonReduction]: Number of co-enabled transitions 57240 [2023-01-28 01:29:32,433 INFO L134 LiptonReduction]: Checked pairs total: 122272 [2023-01-28 01:29:32,434 INFO L136 LiptonReduction]: Total number of compositions: 209 [2023-01-28 01:29:32,436 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:29:32,437 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;@6940ef57, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:29:32,437 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-01-28 01:29:32,445 INFO L130 PetriNetUnfolder]: 32/126 cut-off events. [2023-01-28 01:29:32,446 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-01-28 01:29:32,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:29:32,446 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-01-28 01:29:32,446 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:29:32,446 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:29:32,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1506749400, now seen corresponding path program 1 times [2023-01-28 01:29:32,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:29:32,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816435588] [2023-01-28 01:29:32,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:29:32,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:29:32,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:29:32,471 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:29:32,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:29:32,492 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:29:32,492 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:29:32,492 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-01-28 01:29:32,493 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-01-28 01:29:32,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 01:29:32,493 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:29:32,493 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-01-28 01:29:32,493 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:29:32,494 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-01-28 01:29:32,533 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-01-28 01:29:32,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 351 places, 426 transitions, 930 flow [2023-01-28 01:29:33,212 INFO L130 PetriNetUnfolder]: 664/2994 cut-off events. [2023-01-28 01:29:33,213 INFO L131 PetriNetUnfolder]: For 419/431 co-relation queries the response was YES. [2023-01-28 01:29:33,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3445 conditions, 2994 events. 664/2994 cut-off events. For 419/431 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 21390 event pairs, 32 based on Foata normal form. 0/2503 useless extension candidates. Maximal degree in co-relation 1922. Up to 192 conditions per place. [2023-01-28 01:29:33,277 INFO L82 GeneralOperation]: Start removeDead. Operand has 351 places, 426 transitions, 930 flow [2023-01-28 01:29:33,377 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 351 places, 426 transitions, 930 flow [2023-01-28 01:29:33,377 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:29:33,382 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 351 places, 426 transitions, 930 flow [2023-01-28 01:29:33,383 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 351 places, 426 transitions, 930 flow [2023-01-28 01:29:33,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 351 places, 426 transitions, 930 flow [2023-01-28 01:29:34,065 INFO L130 PetriNetUnfolder]: 664/2994 cut-off events. [2023-01-28 01:29:34,065 INFO L131 PetriNetUnfolder]: For 419/431 co-relation queries the response was YES. [2023-01-28 01:29:34,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3445 conditions, 2994 events. 664/2994 cut-off events. For 419/431 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 21390 event pairs, 32 based on Foata normal form. 0/2503 useless extension candidates. Maximal degree in co-relation 1922. Up to 192 conditions per place. [2023-01-28 01:29:34,317 INFO L119 LiptonReduction]: Number of co-enabled transitions 124092 [2023-01-28 01:29:38,538 INFO L134 LiptonReduction]: Checked pairs total: 277996 [2023-01-28 01:29:38,539 INFO L136 LiptonReduction]: Total number of compositions: 276 [2023-01-28 01:29:38,541 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:29:38,542 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;@6940ef57, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:29:38,542 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-01-28 01:29:38,557 INFO L130 PetriNetUnfolder]: 71/259 cut-off events. [2023-01-28 01:29:38,557 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2023-01-28 01:29:38,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:29:38,558 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-01-28 01:29:38,558 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:29:38,558 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:29:38,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1946457780, now seen corresponding path program 1 times [2023-01-28 01:29:38,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:29:38,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899849316] [2023-01-28 01:29:38,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:29:38,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:29:38,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:29:38,605 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:29:38,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:29:38,638 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:29:38,638 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:29:38,639 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-01-28 01:29:38,639 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-01-28 01:29:38,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 01:29:38,639 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:29:38,639 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-01-28 01:29:38,640 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:29:38,640 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-01-28 01:29:38,689 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2023-01-28 01:29:38,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 441 places, 540 transitions, 1192 flow [2023-01-28 01:29:41,375 INFO L130 PetriNetUnfolder]: 2647/9878 cut-off events. [2023-01-28 01:29:41,375 INFO L131 PetriNetUnfolder]: For 2144/2159 co-relation queries the response was YES. [2023-01-28 01:29:41,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12043 conditions, 9878 events. 2647/9878 cut-off events. For 2144/2159 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 86952 event pairs, 313 based on Foata normal form. 0/8482 useless extension candidates. Maximal degree in co-relation 6273. Up to 1024 conditions per place. [2023-01-28 01:29:41,537 INFO L82 GeneralOperation]: Start removeDead. Operand has 441 places, 540 transitions, 1192 flow [2023-01-28 01:29:41,811 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 441 places, 540 transitions, 1192 flow [2023-01-28 01:29:41,811 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:29:41,812 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 441 places, 540 transitions, 1192 flow [2023-01-28 01:29:41,812 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 441 places, 540 transitions, 1192 flow [2023-01-28 01:29:41,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 441 places, 540 transitions, 1192 flow [2023-01-28 01:29:44,093 INFO L130 PetriNetUnfolder]: 2647/9878 cut-off events. [2023-01-28 01:29:44,093 INFO L131 PetriNetUnfolder]: For 2144/2159 co-relation queries the response was YES. [2023-01-28 01:29:44,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12043 conditions, 9878 events. 2647/9878 cut-off events. For 2144/2159 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 86952 event pairs, 313 based on Foata normal form. 0/8482 useless extension candidates. Maximal degree in co-relation 6273. Up to 1024 conditions per place. [2023-01-28 01:29:44,936 INFO L119 LiptonReduction]: Number of co-enabled transitions 216432 [2023-01-28 01:29:49,797 INFO L134 LiptonReduction]: Checked pairs total: 498247 [2023-01-28 01:29:49,798 INFO L136 LiptonReduction]: Total number of compositions: 347 [2023-01-28 01:29:49,800 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:29:49,800 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;@6940ef57, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:29:49,801 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-01-28 01:29:49,830 INFO L130 PetriNetUnfolder]: 128/456 cut-off events. [2023-01-28 01:29:49,830 INFO L131 PetriNetUnfolder]: For 74/74 co-relation queries the response was YES. [2023-01-28 01:29:49,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:29:49,830 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-01-28 01:29:49,831 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:29:49,831 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:29:49,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1646597577, now seen corresponding path program 1 times [2023-01-28 01:29:49,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:29:49,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200639492] [2023-01-28 01:29:49,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:29:49,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:29:49,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:29:49,869 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:29:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:29:49,890 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:29:49,890 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:29:49,890 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-01-28 01:29:49,891 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-01-28 01:29:49,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 01:29:49,891 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:29:49,891 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-01-28 01:29:49,891 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:29:49,892 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-01-28 01:29:49,936 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2023-01-28 01:29:49,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 531 places, 654 transitions, 1458 flow [2023-01-28 01:30:01,736 INFO L130 PetriNetUnfolder]: 11762/37248 cut-off events. [2023-01-28 01:30:01,737 INFO L131 PetriNetUnfolder]: For 10450/10468 co-relation queries the response was YES. [2023-01-28 01:30:03,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47674 conditions, 37248 events. 11762/37248 cut-off events. For 10450/10468 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 399854 event pairs, 2148 based on Foata normal form. 0/32613 useless extension candidates. Maximal degree in co-relation 23645. Up to 5120 conditions per place. [2023-01-28 01:30:03,016 INFO L82 GeneralOperation]: Start removeDead. Operand has 531 places, 654 transitions, 1458 flow [2023-01-28 01:30:03,799 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 531 places, 654 transitions, 1458 flow [2023-01-28 01:30:03,799 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:30:03,799 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 531 places, 654 transitions, 1458 flow [2023-01-28 01:30:03,799 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 531 places, 654 transitions, 1458 flow [2023-01-28 01:30:03,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 531 places, 654 transitions, 1458 flow [2023-01-28 01:30:15,110 INFO L130 PetriNetUnfolder]: 11762/37248 cut-off events. [2023-01-28 01:30:15,110 INFO L131 PetriNetUnfolder]: For 10450/10468 co-relation queries the response was YES. [2023-01-28 01:30:16,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47674 conditions, 37248 events. 11762/37248 cut-off events. For 10450/10468 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 399854 event pairs, 2148 based on Foata normal form. 0/32613 useless extension candidates. Maximal degree in co-relation 23645. Up to 5120 conditions per place. [2023-01-28 01:30:19,076 INFO L119 LiptonReduction]: Number of co-enabled transitions 334260 [2023-01-28 01:30:24,079 INFO L134 LiptonReduction]: Checked pairs total: 791125 [2023-01-28 01:30:24,079 INFO L136 LiptonReduction]: Total number of compositions: 416 [2023-01-28 01:30:24,081 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:30:24,081 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;@6940ef57, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:30:24,082 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-01-28 01:30:24,130 INFO L130 PetriNetUnfolder]: 225/769 cut-off events. [2023-01-28 01:30:24,130 INFO L131 PetriNetUnfolder]: For 165/165 co-relation queries the response was YES. [2023-01-28 01:30:24,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:30:24,130 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:30:24,130 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:30:24,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:30:24,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1723365914, now seen corresponding path program 1 times [2023-01-28 01:30:24,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:30:24,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016539085] [2023-01-28 01:30:24,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:30:24,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:30:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:30:24,177 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:30:24,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:30:24,201 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:30:24,201 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:30:24,201 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-01-28 01:30:24,202 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-01-28 01:30:24,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 01:30:24,202 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:30:24,202 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-01-28 01:30:24,202 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:30:24,202 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-01-28 01:30:24,264 INFO L144 ThreadInstanceAdder]: Constructed 24 joinOtherThreadTransitions. [2023-01-28 01:30:24,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 621 places, 768 transitions, 1728 flow [2023-01-28 01:31:30,764 INFO L130 PetriNetUnfolder]: 53929/150768 cut-off events. [2023-01-28 01:31:30,765 INFO L131 PetriNetUnfolder]: For 49552/49573 co-relation queries the response was YES. [2023-01-28 01:31:39,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200197 conditions, 150768 events. 53929/150768 cut-off events. For 49552/49573 co-relation queries the response was YES. Maximal size of possible extension queue 1866. Compared 1913768 event pairs, 12465 based on Foata normal form. 0/133648 useless extension candidates. Maximal degree in co-relation 97243. Up to 24576 conditions per place. [2023-01-28 01:31:39,044 INFO L82 GeneralOperation]: Start removeDead. Operand has 621 places, 768 transitions, 1728 flow [2023-01-28 01:31:44,411 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 621 places, 768 transitions, 1728 flow [2023-01-28 01:31:44,412 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:31:44,412 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 621 places, 768 transitions, 1728 flow [2023-01-28 01:31:44,412 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 621 places, 768 transitions, 1728 flow [2023-01-28 01:31:44,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 621 places, 768 transitions, 1728 flow [2023-01-28 01:32:46,093 INFO L130 PetriNetUnfolder]: 53929/150768 cut-off events. [2023-01-28 01:32:46,094 INFO L131 PetriNetUnfolder]: For 49552/49573 co-relation queries the response was YES. [2023-01-28 01:32:54,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200197 conditions, 150768 events. 53929/150768 cut-off events. For 49552/49573 co-relation queries the response was YES. Maximal size of possible extension queue 1866. Compared 1913768 event pairs, 12465 based on Foata normal form. 0/133648 useless extension candidates. Maximal degree in co-relation 97243. Up to 24576 conditions per place. [2023-01-28 01:33:17,870 INFO L119 LiptonReduction]: Number of co-enabled transitions 477576 [2023-01-28 01:33:24,216 INFO L134 LiptonReduction]: Checked pairs total: 1138993 [2023-01-28 01:33:24,216 INFO L136 LiptonReduction]: Total number of compositions: 489 [2023-01-28 01:33:24,219 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:33:24,220 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;@6940ef57, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:33:24,221 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-01-28 01:33:24,314 INFO L130 PetriNetUnfolder]: 345/1143 cut-off events. [2023-01-28 01:33:24,314 INFO L131 PetriNetUnfolder]: For 324/324 co-relation queries the response was YES. [2023-01-28 01:33:24,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:33:24,314 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:33:24,314 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:33:24,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:33:24,315 INFO L85 PathProgramCache]: Analyzing trace with hash 181207630, now seen corresponding path program 1 times [2023-01-28 01:33:24,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:33:24,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838811353] [2023-01-28 01:33:24,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:33:24,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:33:24,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:33:24,351 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:33:24,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:33:24,390 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:33:24,390 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:33:24,390 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-01-28 01:33:24,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-01-28 01:33:24,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 01:33:24,391 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:33:24,391 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-01-28 01:33:24,391 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:33:24,392 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-01-28 01:33:24,497 INFO L144 ThreadInstanceAdder]: Constructed 28 joinOtherThreadTransitions. [2023-01-28 01:33:24,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 711 places, 882 transitions, 2002 flow