/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_78-equ_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 01:56:10,173 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 01:56:10,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 01:56:10,196 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 01:56:10,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 01:56:10,197 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 01:56:10,198 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 01:56:10,199 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 01:56:10,200 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 01:56:10,201 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 01:56:10,201 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 01:56:10,202 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 01:56:10,202 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 01:56:10,203 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 01:56:10,204 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 01:56:10,204 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 01:56:10,205 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 01:56:10,205 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 01:56:10,206 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 01:56:10,207 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 01:56:10,208 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 01:56:10,209 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 01:56:10,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 01:56:10,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 01:56:10,212 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 01:56:10,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 01:56:10,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 01:56:10,217 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 01:56:10,218 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 01:56:10,231 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 01:56:10,232 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 01:56:10,232 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 01:56:10,232 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 01:56:10,233 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 01:56:10,233 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 01:56:10,233 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 01:56:10,233 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 01:56:10,233 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 01:56:10,233 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 01:56:10,233 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 01:56:10,233 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 01:56:10,233 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 01:56:10,233 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 01:56:10,234 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 01:56:10,234 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 01:56:10,234 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 01:56:10,234 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 01:56:10,234 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 01:56:10,234 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 01:56:10,234 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 01:56:10,234 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 01:56:10,234 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 01:56:10,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:56:10,234 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 01:56:10,234 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 01:56:10,235 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 01:56:10,235 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 01:56:10,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 01:56:10,235 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 01:56:10,235 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 01:56:10,235 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 01:56:10,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 01:56:10,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 01:56:10,401 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 01:56:10,401 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 01:56:10,402 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 01:56:10,404 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_78-equ_racing.i [2023-01-28 01:56:11,346 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 01:56:11,540 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 01:56:11,541 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_78-equ_racing.i [2023-01-28 01:56:11,554 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20a670bab/1868071d2aab4e22ba76fa4a1fa76631/FLAG5e34c8dcd [2023-01-28 01:56:11,574 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20a670bab/1868071d2aab4e22ba76fa4a1fa76631 [2023-01-28 01:56:11,576 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 01:56:11,577 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 01:56:11,578 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 01:56:11,578 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 01:56:11,580 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 01:56:11,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:56:11" (1/1) ... [2023-01-28 01:56:11,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f7a37f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:56:11, skipping insertion in model container [2023-01-28 01:56:11,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:56:11" (1/1) ... [2023-01-28 01:56:11,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 01:56:11,615 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 01:56:11,857 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_78-equ_racing.i[47038,47051] [2023-01-28 01:56:11,875 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:56:11,884 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 01:56:11,905 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_78-equ_racing.i[47038,47051] [2023-01-28 01:56:11,912 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:56:11,945 INFO L208 MainTranslator]: Completed translation [2023-01-28 01:56:11,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:56:11 WrapperNode [2023-01-28 01:56:11,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 01:56:11,946 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 01:56:11,946 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 01:56:11,946 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 01:56:11,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:56:11" (1/1) ... [2023-01-28 01:56:11,961 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:56:11" (1/1) ... [2023-01-28 01:56:11,978 INFO L138 Inliner]: procedures = 271, calls = 56, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 204 [2023-01-28 01:56:11,978 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 01:56:11,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 01:56:11,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 01:56:11,979 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 01:56:11,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:56:11" (1/1) ... [2023-01-28 01:56:11,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:56:11" (1/1) ... [2023-01-28 01:56:11,987 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:56:11" (1/1) ... [2023-01-28 01:56:11,987 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:56:11" (1/1) ... [2023-01-28 01:56:12,003 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:56:11" (1/1) ... [2023-01-28 01:56:12,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:56:11" (1/1) ... [2023-01-28 01:56:12,008 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:56:11" (1/1) ... [2023-01-28 01:56:12,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:56:11" (1/1) ... [2023-01-28 01:56:12,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 01:56:12,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 01:56:12,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 01:56:12,011 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 01:56:12,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:56:11" (1/1) ... [2023-01-28 01:56:12,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:56:12,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 01:56:12,046 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 01:56:12,057 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 01:56:12,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 01:56:12,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 01:56:12,076 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 01:56:12,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 01:56:12,076 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 01:56:12,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 01:56:12,076 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-01-28 01:56:12,077 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-01-28 01:56:12,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 01:56:12,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 01:56:12,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 01:56:12,078 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 01:56:12,218 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 01:56:12,219 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 01:56:12,423 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 01:56:12,444 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 01:56:12,444 INFO L302 CfgBuilder]: Removed 22 assume(true) statements. [2023-01-28 01:56:12,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:56:12 BoogieIcfgContainer [2023-01-28 01:56:12,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 01:56:12,447 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 01:56:12,447 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 01:56:12,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 01:56:12,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 01:56:11" (1/3) ... [2023-01-28 01:56:12,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30e9e9bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:56:12, skipping insertion in model container [2023-01-28 01:56:12,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:56:11" (2/3) ... [2023-01-28 01:56:12,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30e9e9bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:56:12, skipping insertion in model container [2023-01-28 01:56:12,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:56:12" (3/3) ... [2023-01-28 01:56:12,451 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_78-equ_racing.i [2023-01-28 01:56:12,462 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 01:56:12,462 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-01-28 01:56:12,462 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 01:56:12,511 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-01-28 01:56:12,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 201 transitions, 410 flow [2023-01-28 01:56:12,587 INFO L130 PetriNetUnfolder]: 43/271 cut-off events. [2023-01-28 01:56:12,587 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-28 01:56:12,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 271 events. 43/271 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 823 event pairs, 0 based on Foata normal form. 0/222 useless extension candidates. Maximal degree in co-relation 132. Up to 8 conditions per place. [2023-01-28 01:56:12,592 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 201 transitions, 410 flow [2023-01-28 01:56:12,596 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 194 transitions, 393 flow [2023-01-28 01:56:12,598 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:56:12,604 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 170 places, 194 transitions, 393 flow [2023-01-28 01:56:12,606 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 170 places, 194 transitions, 393 flow [2023-01-28 01:56:12,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 194 transitions, 393 flow [2023-01-28 01:56:12,634 INFO L130 PetriNetUnfolder]: 41/264 cut-off events. [2023-01-28 01:56:12,635 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:56:12,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 264 events. 41/264 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 803 event pairs, 0 based on Foata normal form. 0/216 useless extension candidates. Maximal degree in co-relation 132. Up to 8 conditions per place. [2023-01-28 01:56:12,639 INFO L119 LiptonReduction]: Number of co-enabled transitions 8664 [2023-01-28 01:56:18,529 INFO L134 LiptonReduction]: Checked pairs total: 18412 [2023-01-28 01:56:18,529 INFO L136 LiptonReduction]: Total number of compositions: 166 [2023-01-28 01:56:18,539 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:56:18,543 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;@39e3d9a8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:56:18,543 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:56:18,550 INFO L130 PetriNetUnfolder]: 11/39 cut-off events. [2023-01-28 01:56:18,551 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:56:18,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:56:18,551 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-01-28 01:56:18,552 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:56:18,555 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:56:18,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1260636167, now seen corresponding path program 1 times [2023-01-28 01:56:18,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:56:18,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779169901] [2023-01-28 01:56:18,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:56:18,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:56:18,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:56:18,709 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:56:18,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:56:18,769 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:56:18,770 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:56:18,771 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:56:18,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 01:56:18,773 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:56:18,778 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:56:18,778 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:56:18,778 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-01-28 01:56:18,805 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 01:56:18,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 260 transitions, 538 flow [2023-01-28 01:56:18,846 INFO L130 PetriNetUnfolder]: 72/424 cut-off events. [2023-01-28 01:56:18,846 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-01-28 01:56:18,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 438 conditions, 424 events. 72/424 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1596 event pairs, 0 based on Foata normal form. 0/343 useless extension candidates. Maximal degree in co-relation 273. Up to 12 conditions per place. [2023-01-28 01:56:18,850 INFO L82 GeneralOperation]: Start removeDead. Operand has 223 places, 260 transitions, 538 flow [2023-01-28 01:56:18,853 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 222 places, 258 transitions, 534 flow [2023-01-28 01:56:18,853 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:56:18,853 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 222 places, 258 transitions, 534 flow [2023-01-28 01:56:18,854 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 222 places, 258 transitions, 534 flow [2023-01-28 01:56:18,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 222 places, 258 transitions, 534 flow [2023-01-28 01:56:18,882 INFO L130 PetriNetUnfolder]: 71/422 cut-off events. [2023-01-28 01:56:18,882 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-01-28 01:56:18,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 436 conditions, 422 events. 71/422 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1612 event pairs, 0 based on Foata normal form. 0/342 useless extension candidates. Maximal degree in co-relation 271. Up to 12 conditions per place. [2023-01-28 01:56:18,896 INFO L119 LiptonReduction]: Number of co-enabled transitions 25080 [2023-01-28 01:56:24,818 INFO L134 LiptonReduction]: Checked pairs total: 57220 [2023-01-28 01:56:24,818 INFO L136 LiptonReduction]: Total number of compositions: 206 [2023-01-28 01:56:24,820 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:56:24,820 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;@39e3d9a8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:56:24,820 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:56:24,826 INFO L130 PetriNetUnfolder]: 36/109 cut-off events. [2023-01-28 01:56:24,826 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 01:56:24,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:56:24,826 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-01-28 01:56:24,826 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:56:24,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:56:24,827 INFO L85 PathProgramCache]: Analyzing trace with hash -147922955, now seen corresponding path program 1 times [2023-01-28 01:56:24,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:56:24,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966739950] [2023-01-28 01:56:24,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:56:24,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:56:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:56:24,847 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:56:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:56:24,866 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:56:24,866 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:56:24,867 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:56:24,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 01:56:24,867 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:56:24,867 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:56:24,868 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:56:24,868 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-01-28 01:56:24,883 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 01:56:24,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 271 places, 319 transitions, 668 flow [2023-01-28 01:56:24,932 INFO L130 PetriNetUnfolder]: 106/608 cut-off events. [2023-01-28 01:56:24,932 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-01-28 01:56:24,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 636 conditions, 608 events. 106/608 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2559 event pairs, 1 based on Foata normal form. 0/491 useless extension candidates. Maximal degree in co-relation 432. Up to 16 conditions per place. [2023-01-28 01:56:24,936 INFO L82 GeneralOperation]: Start removeDead. Operand has 271 places, 319 transitions, 668 flow [2023-01-28 01:56:24,940 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 270 places, 317 transitions, 664 flow [2023-01-28 01:56:24,940 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:56:24,941 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 270 places, 317 transitions, 664 flow [2023-01-28 01:56:24,941 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 270 places, 317 transitions, 664 flow [2023-01-28 01:56:24,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 270 places, 317 transitions, 664 flow [2023-01-28 01:56:24,987 INFO L130 PetriNetUnfolder]: 105/606 cut-off events. [2023-01-28 01:56:24,987 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-01-28 01:56:24,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 634 conditions, 606 events. 105/606 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2552 event pairs, 1 based on Foata normal form. 0/490 useless extension candidates. Maximal degree in co-relation 430. Up to 16 conditions per place. [2023-01-28 01:56:25,010 INFO L119 LiptonReduction]: Number of co-enabled transitions 47880 [2023-01-28 01:56:29,632 INFO L134 LiptonReduction]: Checked pairs total: 102219 [2023-01-28 01:56:29,633 INFO L136 LiptonReduction]: Total number of compositions: 243 [2023-01-28 01:56:29,640 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:56:29,641 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;@39e3d9a8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:56:29,641 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:56:29,651 INFO L130 PetriNetUnfolder]: 60/177 cut-off events. [2023-01-28 01:56:29,652 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-01-28 01:56:29,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:56:29,652 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-01-28 01:56:29,652 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:56:29,652 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:56:29,653 INFO L85 PathProgramCache]: Analyzing trace with hash -943329716, now seen corresponding path program 1 times [2023-01-28 01:56:29,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:56:29,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845467814] [2023-01-28 01:56:29,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:56:29,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:56:29,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:56:29,674 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:56:29,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:56:29,691 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:56:29,691 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:56:29,691 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:56:29,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 01:56:29,692 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:56:29,692 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:56:29,692 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:56:29,692 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-01-28 01:56:29,719 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-28 01:56:29,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 319 places, 378 transitions, 800 flow [2023-01-28 01:56:29,831 INFO L130 PetriNetUnfolder]: 152/856 cut-off events. [2023-01-28 01:56:29,832 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-01-28 01:56:29,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 911 conditions, 856 events. 152/856 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3889 event pairs, 6 based on Foata normal form. 0/695 useless extension candidates. Maximal degree in co-relation 628. Up to 32 conditions per place. [2023-01-28 01:56:29,840 INFO L82 GeneralOperation]: Start removeDead. Operand has 319 places, 378 transitions, 800 flow [2023-01-28 01:56:29,850 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 318 places, 376 transitions, 796 flow [2023-01-28 01:56:29,851 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:56:29,851 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 318 places, 376 transitions, 796 flow [2023-01-28 01:56:29,851 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 318 places, 376 transitions, 796 flow [2023-01-28 01:56:29,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 318 places, 376 transitions, 796 flow [2023-01-28 01:56:29,960 INFO L130 PetriNetUnfolder]: 151/854 cut-off events. [2023-01-28 01:56:29,960 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-01-28 01:56:29,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 909 conditions, 854 events. 151/854 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3888 event pairs, 6 based on Foata normal form. 0/694 useless extension candidates. Maximal degree in co-relation 626. Up to 32 conditions per place. [2023-01-28 01:56:29,984 INFO L119 LiptonReduction]: Number of co-enabled transitions 77520 [2023-01-28 01:56:35,097 INFO L134 LiptonReduction]: Checked pairs total: 171843 [2023-01-28 01:56:35,097 INFO L136 LiptonReduction]: Total number of compositions: 293 [2023-01-28 01:56:35,099 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:56:35,099 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;@39e3d9a8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:56:35,099 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:56:35,111 INFO L130 PetriNetUnfolder]: 91/255 cut-off events. [2023-01-28 01:56:35,112 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-01-28 01:56:35,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:56:35,112 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-01-28 01:56:35,112 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:56:35,112 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:56:35,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1089661587, now seen corresponding path program 1 times [2023-01-28 01:56:35,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:56:35,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910099375] [2023-01-28 01:56:35,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:56:35,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:56:35,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:56:35,132 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:56:35,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:56:35,170 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:56:35,171 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:56:35,171 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:56:35,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 01:56:35,171 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:56:35,171 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:56:35,172 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:56:35,172 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-01-28 01:56:35,197 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-01-28 01:56:35,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 367 places, 437 transitions, 934 flow [2023-01-28 01:56:35,347 INFO L130 PetriNetUnfolder]: 226/1236 cut-off events. [2023-01-28 01:56:35,348 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-01-28 01:56:35,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1347 conditions, 1236 events. 226/1236 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 6144 event pairs, 23 based on Foata normal form. 0/1015 useless extension candidates. Maximal degree in co-relation 901. Up to 80 conditions per place. [2023-01-28 01:56:35,364 INFO L82 GeneralOperation]: Start removeDead. Operand has 367 places, 437 transitions, 934 flow [2023-01-28 01:56:35,375 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 366 places, 435 transitions, 930 flow [2023-01-28 01:56:35,375 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:56:35,375 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 366 places, 435 transitions, 930 flow [2023-01-28 01:56:35,376 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 366 places, 435 transitions, 930 flow [2023-01-28 01:56:35,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 366 places, 435 transitions, 930 flow [2023-01-28 01:56:35,538 INFO L130 PetriNetUnfolder]: 225/1234 cut-off events. [2023-01-28 01:56:35,538 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-01-28 01:56:35,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1345 conditions, 1234 events. 225/1234 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 6161 event pairs, 23 based on Foata normal form. 0/1014 useless extension candidates. Maximal degree in co-relation 899. Up to 80 conditions per place. [2023-01-28 01:56:35,596 INFO L119 LiptonReduction]: Number of co-enabled transitions 114000 [2023-01-28 01:56:41,034 INFO L134 LiptonReduction]: Checked pairs total: 256844 [2023-01-28 01:56:41,034 INFO L136 LiptonReduction]: Total number of compositions: 332 [2023-01-28 01:56:41,036 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:56:41,036 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;@39e3d9a8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:56:41,036 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:56:41,053 INFO L130 PetriNetUnfolder]: 115/329 cut-off events. [2023-01-28 01:56:41,053 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-01-28 01:56:41,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:56:41,054 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:56:41,054 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:56:41,054 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:56:41,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1183226707, now seen corresponding path program 1 times [2023-01-28 01:56:41,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:56:41,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334944116] [2023-01-28 01:56:41,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:56:41,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:56:41,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:56:41,077 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:56:41,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:56:41,110 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:56:41,110 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:56:41,110 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:56:41,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 01:56:41,111 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:56:41,111 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:56:41,111 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:56:41,111 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-01-28 01:56:41,128 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-01-28 01:56:41,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 415 places, 496 transitions, 1070 flow [2023-01-28 01:56:41,462 INFO L130 PetriNetUnfolder]: 364/1888 cut-off events. [2023-01-28 01:56:41,463 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-01-28 01:56:41,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2120 conditions, 1888 events. 364/1888 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 10676 event pairs, 72 based on Foata normal form. 0/1575 useless extension candidates. Maximal degree in co-relation 1335. Up to 192 conditions per place. [2023-01-28 01:56:41,484 INFO L82 GeneralOperation]: Start removeDead. Operand has 415 places, 496 transitions, 1070 flow [2023-01-28 01:56:41,498 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 414 places, 494 transitions, 1066 flow [2023-01-28 01:56:41,498 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:56:41,499 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 414 places, 494 transitions, 1066 flow [2023-01-28 01:56:41,499 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 414 places, 494 transitions, 1066 flow [2023-01-28 01:56:41,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 414 places, 494 transitions, 1066 flow [2023-01-28 01:56:41,770 INFO L130 PetriNetUnfolder]: 363/1886 cut-off events. [2023-01-28 01:56:41,772 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-01-28 01:56:41,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2118 conditions, 1886 events. 363/1886 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 10777 event pairs, 72 based on Foata normal form. 0/1574 useless extension candidates. Maximal degree in co-relation 1333. Up to 192 conditions per place. [2023-01-28 01:56:41,901 INFO L119 LiptonReduction]: Number of co-enabled transitions 157320 [2023-01-28 01:56:47,115 INFO L134 LiptonReduction]: Checked pairs total: 350983 [2023-01-28 01:56:47,116 INFO L136 LiptonReduction]: Total number of compositions: 364 [2023-01-28 01:56:47,117 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:56:47,117 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;@39e3d9a8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:56:47,118 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:56:47,142 INFO L130 PetriNetUnfolder]: 144/419 cut-off events. [2023-01-28 01:56:47,142 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-01-28 01:56:47,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:56:47,142 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:56:47,143 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:56:47,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:56:47,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1486468492, now seen corresponding path program 1 times [2023-01-28 01:56:47,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:56:47,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284198124] [2023-01-28 01:56:47,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:56:47,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:56:47,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:56:47,161 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:56:47,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:56:47,174 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:56:47,174 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:56:47,175 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:56:47,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 01:56:47,175 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:56:47,175 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:56:47,175 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:56:47,175 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-01-28 01:56:47,197 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-01-28 01:56:47,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 463 places, 555 transitions, 1208 flow [2023-01-28 01:56:47,771 INFO L130 PetriNetUnfolder]: 646/3100 cut-off events. [2023-01-28 01:56:47,772 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-01-28 01:56:47,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3598 conditions, 3100 events. 646/3100 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 20606 event pairs, 201 based on Foata normal form. 0/2631 useless extension candidates. Maximal degree in co-relation 2106. Up to 448 conditions per place. [2023-01-28 01:56:47,812 INFO L82 GeneralOperation]: Start removeDead. Operand has 463 places, 555 transitions, 1208 flow [2023-01-28 01:56:47,836 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 462 places, 553 transitions, 1204 flow [2023-01-28 01:56:47,836 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:56:47,836 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 462 places, 553 transitions, 1204 flow [2023-01-28 01:56:47,836 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 462 places, 553 transitions, 1204 flow [2023-01-28 01:56:47,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 462 places, 553 transitions, 1204 flow [2023-01-28 01:56:48,354 INFO L130 PetriNetUnfolder]: 645/3098 cut-off events. [2023-01-28 01:56:48,354 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-01-28 01:56:48,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3596 conditions, 3098 events. 645/3098 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 20594 event pairs, 201 based on Foata normal form. 0/2630 useless extension candidates. Maximal degree in co-relation 2104. Up to 448 conditions per place. [2023-01-28 01:56:48,651 INFO L119 LiptonReduction]: Number of co-enabled transitions 207480 [2023-01-28 01:56:54,237 INFO L134 LiptonReduction]: Checked pairs total: 472511 [2023-01-28 01:56:54,237 INFO L136 LiptonReduction]: Total number of compositions: 411 [2023-01-28 01:56:54,239 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:56:54,239 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;@39e3d9a8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:56:54,239 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:56:54,271 INFO L130 PetriNetUnfolder]: 173/520 cut-off events. [2023-01-28 01:56:54,271 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-01-28 01:56:54,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:56:54,272 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:56:54,272 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:56:54,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:56:54,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1151230472, now seen corresponding path program 1 times [2023-01-28 01:56:54,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:56:54,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235714366] [2023-01-28 01:56:54,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:56:54,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:56:54,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:56:54,308 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:56:54,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:56:54,322 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:56:54,323 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:56:54,323 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:56:54,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 01:56:54,323 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:56:54,323 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:56:54,323 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:56:54,323 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-01-28 01:56:54,347 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-01-28 01:56:54,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 511 places, 614 transitions, 1348 flow [2023-01-28 01:56:55,577 INFO L130 PetriNetUnfolder]: 1248/5464 cut-off events. [2023-01-28 01:56:55,577 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-01-28 01:56:55,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6549 conditions, 5464 events. 1248/5464 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 42276 event pairs, 522 based on Foata normal form. 0/4711 useless extension candidates. Maximal degree in co-relation 3582. Up to 1024 conditions per place. [2023-01-28 01:56:55,670 INFO L82 GeneralOperation]: Start removeDead. Operand has 511 places, 614 transitions, 1348 flow [2023-01-28 01:56:55,741 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 510 places, 612 transitions, 1344 flow [2023-01-28 01:56:55,742 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:56:55,742 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 510 places, 612 transitions, 1344 flow [2023-01-28 01:56:55,742 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 510 places, 612 transitions, 1344 flow [2023-01-28 01:56:55,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 510 places, 612 transitions, 1344 flow [2023-01-28 01:56:56,864 INFO L130 PetriNetUnfolder]: 1247/5462 cut-off events. [2023-01-28 01:56:56,864 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-01-28 01:56:56,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6547 conditions, 5462 events. 1247/5462 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 42198 event pairs, 522 based on Foata normal form. 0/4710 useless extension candidates. Maximal degree in co-relation 3580. Up to 1024 conditions per place. [2023-01-28 01:56:57,284 INFO L119 LiptonReduction]: Number of co-enabled transitions 264480 [2023-01-28 01:57:03,257 INFO L134 LiptonReduction]: Checked pairs total: 613378 [2023-01-28 01:57:03,258 INFO L136 LiptonReduction]: Total number of compositions: 448 [2023-01-28 01:57:03,259 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:57:03,259 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;@39e3d9a8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:57:03,259 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:57:03,305 INFO L130 PetriNetUnfolder]: 220/661 cut-off events. [2023-01-28 01:57:03,306 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-01-28 01:57:03,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:57:03,306 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:57:03,306 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:57:03,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:57:03,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1748661837, now seen corresponding path program 1 times [2023-01-28 01:57:03,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:57:03,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808432293] [2023-01-28 01:57:03,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:57:03,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:57:03,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:57:03,323 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:57:03,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:57:03,340 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:57:03,340 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:57:03,340 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:57:03,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 01:57:03,341 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:57:03,341 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:57:03,341 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:57:03,341 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-01-28 01:57:03,371 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-01-28 01:57:03,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 559 places, 673 transitions, 1490 flow [2023-01-28 01:57:05,982 INFO L130 PetriNetUnfolder]: 2554/10196 cut-off events. [2023-01-28 01:57:05,983 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-01-28 01:57:06,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12573 conditions, 10196 events. 2554/10196 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 90882 event pairs, 1291 based on Foata normal form. 0/8903 useless extension candidates. Maximal degree in co-relation 6531. Up to 2304 conditions per place. [2023-01-28 01:57:06,151 INFO L82 GeneralOperation]: Start removeDead. Operand has 559 places, 673 transitions, 1490 flow [2023-01-28 01:57:06,278 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 558 places, 671 transitions, 1486 flow [2023-01-28 01:57:06,278 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:57:06,278 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 558 places, 671 transitions, 1486 flow [2023-01-28 01:57:06,278 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 558 places, 671 transitions, 1486 flow [2023-01-28 01:57:06,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 558 places, 671 transitions, 1486 flow [2023-01-28 01:57:08,833 INFO L130 PetriNetUnfolder]: 2553/10194 cut-off events. [2023-01-28 01:57:08,833 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-01-28 01:57:09,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12571 conditions, 10194 events. 2553/10194 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 90822 event pairs, 1291 based on Foata normal form. 0/8902 useless extension candidates. Maximal degree in co-relation 6529. Up to 2304 conditions per place. [2023-01-28 01:57:09,721 INFO L119 LiptonReduction]: Number of co-enabled transitions 328320 [2023-01-28 01:57:16,392 INFO L134 LiptonReduction]: Checked pairs total: 766536 [2023-01-28 01:57:16,393 INFO L136 LiptonReduction]: Total number of compositions: 494 [2023-01-28 01:57:16,394 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:57:16,394 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;@39e3d9a8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:57:16,395 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:57:16,492 INFO L130 PetriNetUnfolder]: 274/838 cut-off events. [2023-01-28 01:57:16,492 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-01-28 01:57:16,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:57:16,493 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:57:16,493 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:57:16,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:57:16,493 INFO L85 PathProgramCache]: Analyzing trace with hash 988407282, now seen corresponding path program 1 times [2023-01-28 01:57:16,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:57:16,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059861820] [2023-01-28 01:57:16,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:57:16,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:57:16,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:57:16,519 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:57:16,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:57:16,542 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:57:16,542 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:57:16,542 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:57:16,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 01:57:16,543 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:57:16,548 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:57:16,549 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:57:16,549 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-01-28 01:57:16,583 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-01-28 01:57:16,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 607 places, 732 transitions, 1634 flow [2023-01-28 01:57:22,188 INFO L130 PetriNetUnfolder]: 5396/19792 cut-off events. [2023-01-28 01:57:22,188 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-01-28 01:57:22,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24998 conditions, 19792 events. 5396/19792 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 201736 event pairs, 3084 based on Foata normal form. 0/17447 useless extension candidates. Maximal degree in co-relation 12553. Up to 5120 conditions per place. [2023-01-28 01:57:22,592 INFO L82 GeneralOperation]: Start removeDead. Operand has 607 places, 732 transitions, 1634 flow [2023-01-28 01:57:22,891 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 606 places, 730 transitions, 1630 flow [2023-01-28 01:57:22,892 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:57:22,892 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 606 places, 730 transitions, 1630 flow [2023-01-28 01:57:22,892 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 606 places, 730 transitions, 1630 flow [2023-01-28 01:57:22,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 606 places, 730 transitions, 1630 flow [2023-01-28 01:57:28,753 INFO L130 PetriNetUnfolder]: 5395/19790 cut-off events. [2023-01-28 01:57:28,753 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-01-28 01:57:29,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24996 conditions, 19790 events. 5395/19790 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 201870 event pairs, 3084 based on Foata normal form. 0/17446 useless extension candidates. Maximal degree in co-relation 12551. Up to 5120 conditions per place. [2023-01-28 01:57:30,546 INFO L119 LiptonReduction]: Number of co-enabled transitions 399000 [2023-01-28 01:57:37,091 INFO L134 LiptonReduction]: Checked pairs total: 928784 [2023-01-28 01:57:37,091 INFO L136 LiptonReduction]: Total number of compositions: 535 [2023-01-28 01:57:37,092 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:57:37,092 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;@39e3d9a8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:57:37,092 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:57:37,190 INFO L130 PetriNetUnfolder]: 371/1102 cut-off events. [2023-01-28 01:57:37,190 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-01-28 01:57:37,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:57:37,190 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:57:37,190 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:57:37,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:57:37,191 INFO L85 PathProgramCache]: Analyzing trace with hash -114241939, now seen corresponding path program 1 times [2023-01-28 01:57:37,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:57:37,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573876489] [2023-01-28 01:57:37,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:57:37,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:57:37,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:57:37,226 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:57:37,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:57:37,245 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:57:37,246 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:57:37,246 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:57:37,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 01:57:37,246 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:57:37,248 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:57:37,248 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:57:37,248 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-01-28 01:57:37,276 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-01-28 01:57:37,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 655 places, 791 transitions, 1780 flow [2023-01-28 01:57:49,644 INFO L130 PetriNetUnfolder]: 11566/39372 cut-off events. [2023-01-28 01:57:49,644 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-01-28 01:57:50,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50736 conditions, 39372 events. 11566/39372 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 744. Compared 446102 event pairs, 7181 based on Foata normal form. 0/34951 useless extension candidates. Maximal degree in co-relation 24976. Up to 11264 conditions per place. [2023-01-28 01:57:50,730 INFO L82 GeneralOperation]: Start removeDead. Operand has 655 places, 791 transitions, 1780 flow [2023-01-28 01:57:51,608 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 654 places, 789 transitions, 1776 flow [2023-01-28 01:57:51,609 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:57:51,609 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 654 places, 789 transitions, 1776 flow [2023-01-28 01:57:51,609 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 654 places, 789 transitions, 1776 flow [2023-01-28 01:57:51,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 654 places, 789 transitions, 1776 flow [2023-01-28 01:58:03,799 INFO L130 PetriNetUnfolder]: 11565/39370 cut-off events. [2023-01-28 01:58:03,799 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-01-28 01:58:04,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50734 conditions, 39370 events. 11565/39370 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 744. Compared 446115 event pairs, 7181 based on Foata normal form. 0/34950 useless extension candidates. Maximal degree in co-relation 24974. Up to 11264 conditions per place. [2023-01-28 01:58:07,974 INFO L119 LiptonReduction]: Number of co-enabled transitions 476520 [2023-01-28 01:58:16,363 INFO L134 LiptonReduction]: Checked pairs total: 1245810 [2023-01-28 01:58:16,363 INFO L136 LiptonReduction]: Total number of compositions: 576 [2023-01-28 01:58:16,364 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:58:16,364 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;@39e3d9a8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:58:16,364 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:58:16,510 INFO L130 PetriNetUnfolder]: 499/1469 cut-off events. [2023-01-28 01:58:16,510 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-01-28 01:58:16,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:58:16,510 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:58:16,510 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:58:16,511 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:58:16,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1853058232, now seen corresponding path program 1 times [2023-01-28 01:58:16,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:58:16,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341313465] [2023-01-28 01:58:16,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:58:16,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:58:16,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:58:16,532 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:58:16,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:58:16,562 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:58:16,562 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:58:16,562 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:58:16,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 01:58:16,562 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:58:16,563 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:58:16,563 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:58:16,563 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-01-28 01:58:16,596 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-01-28 01:58:16,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 703 places, 850 transitions, 1928 flow [2023-01-28 01:58:44,252 INFO L130 PetriNetUnfolder]: 24904/79432 cut-off events. [2023-01-28 01:58:44,252 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-01-28 01:58:48,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104123 conditions, 79432 events. 24904/79432 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1396. Compared 986443 event pairs, 16398 based on Foata normal form. 0/70887 useless extension candidates. Maximal degree in co-relation 50712. Up to 24576 conditions per place. [2023-01-28 01:58:48,802 INFO L82 GeneralOperation]: Start removeDead. Operand has 703 places, 850 transitions, 1928 flow [2023-01-28 01:58:51,327 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 702 places, 848 transitions, 1924 flow [2023-01-28 01:58:51,327 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:58:51,327 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 702 places, 848 transitions, 1924 flow [2023-01-28 01:58:51,327 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 702 places, 848 transitions, 1924 flow [2023-01-28 01:58:51,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 702 places, 848 transitions, 1924 flow [2023-01-28 01:59:17,875 INFO L130 PetriNetUnfolder]: 24903/79430 cut-off events. [2023-01-28 01:59:17,876 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-01-28 01:59:21,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104121 conditions, 79430 events. 24903/79430 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1396. Compared 986841 event pairs, 16398 based on Foata normal form. 0/70886 useless extension candidates. Maximal degree in co-relation 50710. Up to 24576 conditions per place. [2023-01-28 01:59:29,152 INFO L119 LiptonReduction]: Number of co-enabled transitions 560880 [2023-01-28 01:59:37,683 INFO L134 LiptonReduction]: Checked pairs total: 1450327 [2023-01-28 01:59:37,684 INFO L136 LiptonReduction]: Total number of compositions: 614 [2023-01-28 01:59:37,685 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:59:37,685 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;@39e3d9a8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:59:37,685 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:59:37,937 INFO L130 PetriNetUnfolder]: 736/2051 cut-off events. [2023-01-28 01:59:37,937 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-01-28 01:59:37,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:59:37,938 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 01:59:37,938 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:59:37,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:59:37,938 INFO L85 PathProgramCache]: Analyzing trace with hash -867930178, now seen corresponding path program 1 times [2023-01-28 01:59:37,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:59:37,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215009401] [2023-01-28 01:59:37,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:59:37,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:59:37,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:59:37,971 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:59:37,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:59:37,990 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:59:37,990 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:59:37,990 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:59:37,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 01:59:37,990 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:59:37,991 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:59:37,991 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:59:37,991 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-01-28 01:59:38,023 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-01-28 01:59:38,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 751 places, 909 transitions, 2078 flow [2023-01-28 02:00:44,408 INFO L130 PetriNetUnfolder]: 53602/161476 cut-off events. [2023-01-28 02:00:44,409 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-01-28 02:00:56,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214855 conditions, 161476 events. 53602/161476 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2778. Compared 2168093 event pairs, 36879 based on Foata normal form. 0/144711 useless extension candidates. Maximal degree in co-relation 104097. Up to 53248 conditions per place. [2023-01-28 02:00:56,412 INFO L82 GeneralOperation]: Start removeDead. Operand has 751 places, 909 transitions, 2078 flow [2023-01-28 02:01:03,956 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 750 places, 907 transitions, 2074 flow [2023-01-28 02:01:03,956 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 02:01:03,956 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 750 places, 907 transitions, 2074 flow [2023-01-28 02:01:03,957 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 750 places, 907 transitions, 2074 flow [2023-01-28 02:01:03,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 750 places, 907 transitions, 2074 flow