/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_51-mutexptr_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 01:50:15,461 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 01:50:15,462 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 01:50:15,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-01-28 01:50:15,494 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 01:50:15,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 01:50:15,499 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 01:50:15,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 01:50:15,500 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 01:50:15,501 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 01:50:15,502 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 01:50:15,507 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 01:50:15,507 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 01:50:15,508 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 01:50:15,509 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 01:50:15,509 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 01:50:15,513 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 01:50:15,518 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 01:50:15,518 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 01:50:15,519 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 01:50:15,519 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 01:50:15,544 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 01:50:15,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 01:50:15,545 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 01:50:15,545 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 01:50:15,546 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 01:50:15,546 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 01:50:15,546 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 01:50:15,546 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 01:50:15,546 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 01:50:15,547 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 01:50:15,547 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 01:50:15,547 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 01:50:15,547 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 01:50:15,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 01:50:15,548 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 01:50:15,548 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 01:50:15,548 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 01:50:15,548 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 01:50:15,548 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 01:50:15,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 01:50:15,548 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 01:50:15,548 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 01:50:15,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 01:50:15,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:50:15,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 01:50:15,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 01:50:15,549 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 01:50:15,549 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 01:50:15,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 01:50:15,549 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 01:50:15,549 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 01:50:15,549 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 01:50:15,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 01:50:15,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 01:50:15,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 01:50:15,739 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 01:50:15,739 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 01:50:15,740 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_51-mutexptr_racefree.i [2023-01-28 01:50:16,611 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 01:50:16,791 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 01:50:16,791 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_51-mutexptr_racefree.i [2023-01-28 01:50:16,816 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eab2bbfc7/ca9bf4e05c0846e6b254500669e4fa68/FLAG434e7a74e [2023-01-28 01:50:16,830 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eab2bbfc7/ca9bf4e05c0846e6b254500669e4fa68 [2023-01-28 01:50:16,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 01:50:16,833 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 01:50:16,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 01:50:16,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 01:50:16,835 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 01:50:16,836 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:50:16" (1/1) ... [2023-01-28 01:50:16,836 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e675e1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:16, skipping insertion in model container [2023-01-28 01:50:16,837 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:50:16" (1/1) ... [2023-01-28 01:50:16,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 01:50:16,869 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 01:50:17,071 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_51-mutexptr_racefree.i[30176,30189] [2023-01-28 01:50:17,087 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:50:17,097 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 01:50:17,126 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_51-mutexptr_racefree.i[30176,30189] [2023-01-28 01:50:17,143 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:50:17,167 INFO L208 MainTranslator]: Completed translation [2023-01-28 01:50:17,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:17 WrapperNode [2023-01-28 01:50:17,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 01:50:17,169 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 01:50:17,169 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 01:50:17,169 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 01:50:17,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:17" (1/1) ... [2023-01-28 01:50:17,186 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:17" (1/1) ... [2023-01-28 01:50:17,199 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 88 [2023-01-28 01:50:17,199 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 01:50:17,199 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 01:50:17,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 01:50:17,200 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 01:50:17,205 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:17" (1/1) ... [2023-01-28 01:50:17,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:17" (1/1) ... [2023-01-28 01:50:17,207 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:17" (1/1) ... [2023-01-28 01:50:17,207 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:17" (1/1) ... [2023-01-28 01:50:17,211 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:17" (1/1) ... [2023-01-28 01:50:17,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:17" (1/1) ... [2023-01-28 01:50:17,216 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:17" (1/1) ... [2023-01-28 01:50:17,216 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:17" (1/1) ... [2023-01-28 01:50:17,218 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 01:50:17,219 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 01:50:17,219 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 01:50:17,219 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 01:50:17,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:17" (1/1) ... [2023-01-28 01:50:17,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:50:17,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 01:50:17,240 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 01:50:17,244 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 01:50:17,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 01:50:17,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 01:50:17,270 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 01:50:17,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 01:50:17,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 01:50:17,270 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-01-28 01:50:17,270 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-01-28 01:50:17,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 01:50:17,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 01:50:17,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 01:50:17,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 01:50:17,271 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 01:50:17,418 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 01:50:17,419 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 01:50:17,586 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 01:50:17,591 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 01:50:17,591 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-01-28 01:50:17,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:50:17 BoogieIcfgContainer [2023-01-28 01:50:17,592 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 01:50:17,594 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 01:50:17,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 01:50:17,595 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 01:50:17,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 01:50:16" (1/3) ... [2023-01-28 01:50:17,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7225e92f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:50:17, skipping insertion in model container [2023-01-28 01:50:17,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:17" (2/3) ... [2023-01-28 01:50:17,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7225e92f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:50:17, skipping insertion in model container [2023-01-28 01:50:17,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:50:17" (3/3) ... [2023-01-28 01:50:17,597 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_51-mutexptr_racefree.i [2023-01-28 01:50:17,608 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 01:50:17,608 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 01:50:17,608 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 01:50:17,655 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-01-28 01:50:17,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 123 transitions, 254 flow [2023-01-28 01:50:17,716 INFO L130 PetriNetUnfolder]: 17/159 cut-off events. [2023-01-28 01:50:17,716 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-28 01:50:17,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 159 events. 17/159 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 361 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 76. Up to 4 conditions per place. [2023-01-28 01:50:17,720 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 123 transitions, 254 flow [2023-01-28 01:50:17,723 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 118 transitions, 241 flow [2023-01-28 01:50:17,725 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:50:17,731 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 110 places, 118 transitions, 241 flow [2023-01-28 01:50:17,733 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 110 places, 118 transitions, 241 flow [2023-01-28 01:50:17,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 118 transitions, 241 flow [2023-01-28 01:50:17,757 INFO L130 PetriNetUnfolder]: 16/154 cut-off events. [2023-01-28 01:50:17,757 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:50:17,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 154 events. 16/154 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 348 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 76. Up to 4 conditions per place. [2023-01-28 01:50:17,760 INFO L119 LiptonReduction]: Number of co-enabled transitions 2940 [2023-01-28 01:50:20,229 INFO L134 LiptonReduction]: Checked pairs total: 4871 [2023-01-28 01:50:20,229 INFO L136 LiptonReduction]: Total number of compositions: 100 [2023-01-28 01:50:20,249 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:50:20,254 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;@3a28f80b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:50:20,254 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:50:20,258 INFO L130 PetriNetUnfolder]: 3/20 cut-off events. [2023-01-28 01:50:20,258 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:50:20,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:50:20,259 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-01-28 01:50:20,259 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:50:20,262 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:50:20,262 INFO L85 PathProgramCache]: Analyzing trace with hash 846211692, now seen corresponding path program 1 times [2023-01-28 01:50:20,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:50:20,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436431765] [2023-01-28 01:50:20,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:50:20,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:50:20,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:50:20,347 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:50:20,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:50:20,374 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:50:20,375 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:50:20,375 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:50:20,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 01:50:20,377 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:50:20,378 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:50:20,379 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:50:20,379 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-01-28 01:50:20,394 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 01:50:20,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 160 transitions, 338 flow [2023-01-28 01:50:20,424 INFO L130 PetriNetUnfolder]: 31/256 cut-off events. [2023-01-28 01:50:20,424 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-01-28 01:50:20,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270 conditions, 256 events. 31/256 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 749 event pairs, 0 based on Foata normal form. 0/218 useless extension candidates. Maximal degree in co-relation 161. Up to 8 conditions per place. [2023-01-28 01:50:20,425 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 160 transitions, 338 flow [2023-01-28 01:50:20,427 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 160 transitions, 338 flow [2023-01-28 01:50:20,427 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:50:20,427 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 146 places, 160 transitions, 338 flow [2023-01-28 01:50:20,427 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 146 places, 160 transitions, 338 flow [2023-01-28 01:50:20,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 160 transitions, 338 flow [2023-01-28 01:50:20,449 INFO L130 PetriNetUnfolder]: 31/256 cut-off events. [2023-01-28 01:50:20,449 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-01-28 01:50:20,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270 conditions, 256 events. 31/256 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 749 event pairs, 0 based on Foata normal form. 0/218 useless extension candidates. Maximal degree in co-relation 161. Up to 8 conditions per place. [2023-01-28 01:50:20,455 INFO L119 LiptonReduction]: Number of co-enabled transitions 9100 [2023-01-28 01:50:23,005 INFO L134 LiptonReduction]: Checked pairs total: 17653 [2023-01-28 01:50:23,005 INFO L136 LiptonReduction]: Total number of compositions: 125 [2023-01-28 01:50:23,008 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:50:23,008 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;@3a28f80b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:50:23,008 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:50:23,012 INFO L130 PetriNetUnfolder]: 12/55 cut-off events. [2023-01-28 01:50:23,012 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 01:50:23,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:50:23,012 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-01-28 01:50:23,017 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:50:23,017 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:50:23,017 INFO L85 PathProgramCache]: Analyzing trace with hash -431453289, now seen corresponding path program 1 times [2023-01-28 01:50:23,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:50:23,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997071915] [2023-01-28 01:50:23,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:50:23,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:50:23,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:50:23,053 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:50:23,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:50:23,077 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:50:23,077 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:50:23,077 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:50:23,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 01:50:23,078 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:50:23,078 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:50:23,078 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:50:23,078 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-01-28 01:50:23,095 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 01:50:23,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 197 transitions, 424 flow [2023-01-28 01:50:23,142 INFO L130 PetriNetUnfolder]: 50/384 cut-off events. [2023-01-28 01:50:23,142 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-01-28 01:50:23,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 384 events. 50/384 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1280 event pairs, 1 based on Foata normal form. 0/326 useless extension candidates. Maximal degree in co-relation 264. Up to 16 conditions per place. [2023-01-28 01:50:23,146 INFO L82 GeneralOperation]: Start removeDead. Operand has 178 places, 197 transitions, 424 flow [2023-01-28 01:50:23,148 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 178 places, 197 transitions, 424 flow [2023-01-28 01:50:23,148 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:50:23,149 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 178 places, 197 transitions, 424 flow [2023-01-28 01:50:23,149 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 178 places, 197 transitions, 424 flow [2023-01-28 01:50:23,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 197 transitions, 424 flow [2023-01-28 01:50:23,180 INFO L130 PetriNetUnfolder]: 50/384 cut-off events. [2023-01-28 01:50:23,184 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-01-28 01:50:23,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 384 events. 50/384 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1280 event pairs, 1 based on Foata normal form. 0/326 useless extension candidates. Maximal degree in co-relation 264. Up to 16 conditions per place. [2023-01-28 01:50:23,196 INFO L119 LiptonReduction]: Number of co-enabled transitions 17640 [2023-01-28 01:50:25,959 INFO L134 LiptonReduction]: Checked pairs total: 41362 [2023-01-28 01:50:25,959 INFO L136 LiptonReduction]: Total number of compositions: 149 [2023-01-28 01:50:25,960 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:50:25,961 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;@3a28f80b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:50:25,961 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:50:25,965 INFO L130 PetriNetUnfolder]: 22/90 cut-off events. [2023-01-28 01:50:25,966 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-01-28 01:50:25,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:50:25,966 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-01-28 01:50:25,966 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:50:25,966 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:50:25,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1581675497, now seen corresponding path program 1 times [2023-01-28 01:50:25,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:50:25,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720072771] [2023-01-28 01:50:25,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:50:25,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:50:25,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:50:25,999 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:50:26,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:50:26,039 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:50:26,040 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:50:26,040 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:50:26,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 01:50:26,041 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:50:26,041 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:50:26,041 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:50:26,041 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-01-28 01:50:26,064 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-28 01:50:26,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 234 transitions, 512 flow [2023-01-28 01:50:26,117 INFO L130 PetriNetUnfolder]: 81/576 cut-off events. [2023-01-28 01:50:26,117 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-01-28 01:50:26,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 631 conditions, 576 events. 81/576 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2235 event pairs, 6 based on Foata normal form. 0/490 useless extension candidates. Maximal degree in co-relation 404. Up to 32 conditions per place. [2023-01-28 01:50:26,122 INFO L82 GeneralOperation]: Start removeDead. Operand has 210 places, 234 transitions, 512 flow [2023-01-28 01:50:26,124 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 210 places, 234 transitions, 512 flow [2023-01-28 01:50:26,125 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:50:26,125 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 210 places, 234 transitions, 512 flow [2023-01-28 01:50:26,125 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 210 places, 234 transitions, 512 flow [2023-01-28 01:50:26,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 234 transitions, 512 flow [2023-01-28 01:50:26,170 INFO L130 PetriNetUnfolder]: 81/576 cut-off events. [2023-01-28 01:50:26,171 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-01-28 01:50:26,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 631 conditions, 576 events. 81/576 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2235 event pairs, 6 based on Foata normal form. 0/490 useless extension candidates. Maximal degree in co-relation 404. Up to 32 conditions per place. [2023-01-28 01:50:26,188 INFO L119 LiptonReduction]: Number of co-enabled transitions 28840 [2023-01-28 01:50:29,199 INFO L134 LiptonReduction]: Checked pairs total: 68312 [2023-01-28 01:50:29,199 INFO L136 LiptonReduction]: Total number of compositions: 170 [2023-01-28 01:50:29,200 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:50:29,201 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;@3a28f80b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:50:29,201 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:50:29,209 INFO L130 PetriNetUnfolder]: 33/131 cut-off events. [2023-01-28 01:50:29,209 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-01-28 01:50:29,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:50:29,209 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-01-28 01:50:29,209 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:50:29,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:50:29,210 INFO L85 PathProgramCache]: Analyzing trace with hash -667862727, now seen corresponding path program 1 times [2023-01-28 01:50:29,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:50:29,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291373510] [2023-01-28 01:50:29,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:50:29,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:50:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:50:29,231 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:50:29,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:50:29,247 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:50:29,248 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:50:29,248 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:50:29,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 01:50:29,248 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:50:29,248 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:50:29,248 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:50:29,248 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-01-28 01:50:29,265 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-01-28 01:50:29,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 271 transitions, 602 flow [2023-01-28 01:50:29,405 INFO L130 PetriNetUnfolder]: 140/900 cut-off events. [2023-01-28 01:50:29,405 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-01-28 01:50:29,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1011 conditions, 900 events. 140/900 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4077 event pairs, 23 based on Foata normal form. 0/770 useless extension candidates. Maximal degree in co-relation 621. Up to 80 conditions per place. [2023-01-28 01:50:29,416 INFO L82 GeneralOperation]: Start removeDead. Operand has 242 places, 271 transitions, 602 flow [2023-01-28 01:50:29,422 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 242 places, 271 transitions, 602 flow [2023-01-28 01:50:29,422 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:50:29,422 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 242 places, 271 transitions, 602 flow [2023-01-28 01:50:29,422 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 242 places, 271 transitions, 602 flow [2023-01-28 01:50:29,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 271 transitions, 602 flow [2023-01-28 01:50:29,535 INFO L130 PetriNetUnfolder]: 140/900 cut-off events. [2023-01-28 01:50:29,535 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-01-28 01:50:29,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1011 conditions, 900 events. 140/900 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4077 event pairs, 23 based on Foata normal form. 0/770 useless extension candidates. Maximal degree in co-relation 621. Up to 80 conditions per place. [2023-01-28 01:50:29,567 INFO L119 LiptonReduction]: Number of co-enabled transitions 42700 [2023-01-28 01:50:32,442 INFO L134 LiptonReduction]: Checked pairs total: 103735 [2023-01-28 01:50:32,443 INFO L136 LiptonReduction]: Total number of compositions: 190 [2023-01-28 01:50:32,446 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:50:32,447 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;@3a28f80b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:50:32,448 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:50:32,457 INFO L130 PetriNetUnfolder]: 46/179 cut-off events. [2023-01-28 01:50:32,457 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-01-28 01:50:32,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:50:32,458 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:50:32,461 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:50:32,461 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:50:32,461 INFO L85 PathProgramCache]: Analyzing trace with hash -281911859, now seen corresponding path program 1 times [2023-01-28 01:50:32,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:50:32,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207925221] [2023-01-28 01:50:32,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:50:32,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:50:32,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:50:32,494 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:50:32,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:50:32,520 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:50:32,520 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:50:32,521 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:50:32,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 01:50:32,521 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:50:32,521 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:50:32,521 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:50:32,521 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-01-28 01:50:32,545 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-01-28 01:50:32,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 274 places, 308 transitions, 694 flow [2023-01-28 01:50:32,736 INFO L130 PetriNetUnfolder]: 263/1496 cut-off events. [2023-01-28 01:50:32,736 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-01-28 01:50:32,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1728 conditions, 1496 events. 263/1496 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 8213 event pairs, 72 based on Foata normal form. 0/1290 useless extension candidates. Maximal degree in co-relation 999. Up to 192 conditions per place. [2023-01-28 01:50:32,754 INFO L82 GeneralOperation]: Start removeDead. Operand has 274 places, 308 transitions, 694 flow [2023-01-28 01:50:32,765 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 274 places, 308 transitions, 694 flow [2023-01-28 01:50:32,765 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:50:32,765 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 274 places, 308 transitions, 694 flow [2023-01-28 01:50:32,765 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 274 places, 308 transitions, 694 flow [2023-01-28 01:50:32,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 274 places, 308 transitions, 694 flow [2023-01-28 01:50:32,934 INFO L130 PetriNetUnfolder]: 263/1496 cut-off events. [2023-01-28 01:50:32,934 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-01-28 01:50:32,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1728 conditions, 1496 events. 263/1496 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 8213 event pairs, 72 based on Foata normal form. 0/1290 useless extension candidates. Maximal degree in co-relation 999. Up to 192 conditions per place. [2023-01-28 01:50:33,006 INFO L119 LiptonReduction]: Number of co-enabled transitions 59220 [2023-01-28 01:50:36,144 INFO L134 LiptonReduction]: Checked pairs total: 147264 [2023-01-28 01:50:36,144 INFO L136 LiptonReduction]: Total number of compositions: 218 [2023-01-28 01:50:36,146 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:50:36,146 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;@3a28f80b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:50:36,146 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:50:36,164 INFO L130 PetriNetUnfolder]: 62/237 cut-off events. [2023-01-28 01:50:36,164 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-01-28 01:50:36,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:50:36,164 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:50:36,164 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:50:36,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:50:36,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1068875997, now seen corresponding path program 1 times [2023-01-28 01:50:36,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:50:36,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348406668] [2023-01-28 01:50:36,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:50:36,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:50:36,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:50:36,198 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:50:36,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:50:36,217 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:50:36,217 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:50:36,217 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:50:36,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 01:50:36,217 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:50:36,218 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:50:36,218 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:50:36,218 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-01-28 01:50:36,240 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-01-28 01:50:36,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 306 places, 345 transitions, 788 flow [2023-01-28 01:50:36,635 INFO L130 PetriNetUnfolder]: 530/2652 cut-off events. [2023-01-28 01:50:36,635 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-01-28 01:50:36,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3150 conditions, 2652 events. 530/2652 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 17482 event pairs, 201 based on Foata normal form. 0/2306 useless extension candidates. Maximal degree in co-relation 1714. Up to 448 conditions per place. [2023-01-28 01:50:36,691 INFO L82 GeneralOperation]: Start removeDead. Operand has 306 places, 345 transitions, 788 flow [2023-01-28 01:50:36,713 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 306 places, 345 transitions, 788 flow [2023-01-28 01:50:36,714 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:50:36,714 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 306 places, 345 transitions, 788 flow [2023-01-28 01:50:36,714 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 306 places, 345 transitions, 788 flow [2023-01-28 01:50:36,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 306 places, 345 transitions, 788 flow [2023-01-28 01:50:37,076 INFO L130 PetriNetUnfolder]: 530/2652 cut-off events. [2023-01-28 01:50:37,077 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-01-28 01:50:37,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3150 conditions, 2652 events. 530/2652 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 17482 event pairs, 201 based on Foata normal form. 0/2306 useless extension candidates. Maximal degree in co-relation 1714. Up to 448 conditions per place. [2023-01-28 01:50:37,228 INFO L119 LiptonReduction]: Number of co-enabled transitions 78400 [2023-01-28 01:50:40,546 INFO L134 LiptonReduction]: Checked pairs total: 198127 [2023-01-28 01:50:40,546 INFO L136 LiptonReduction]: Total number of compositions: 239 [2023-01-28 01:50:40,548 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:50:40,548 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;@3a28f80b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:50:40,548 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:50:40,568 INFO L130 PetriNetUnfolder]: 76/308 cut-off events. [2023-01-28 01:50:40,568 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-01-28 01:50:40,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:50:40,569 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:50:40,569 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:50:40,569 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:50:40,569 INFO L85 PathProgramCache]: Analyzing trace with hash -241256761, now seen corresponding path program 1 times [2023-01-28 01:50:40,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:50:40,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202863732] [2023-01-28 01:50:40,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:50:40,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:50:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:50:40,596 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:50:40,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:50:40,623 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:50:40,623 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:50:40,623 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:50:40,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 01:50:40,624 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:50:40,624 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:50:40,624 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:50:40,624 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-01-28 01:50:40,646 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-01-28 01:50:40,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 338 places, 382 transitions, 884 flow [2023-01-28 01:50:41,560 INFO L130 PetriNetUnfolder]: 1117/4960 cut-off events. [2023-01-28 01:50:41,560 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-01-28 01:50:41,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6045 conditions, 4960 events. 1117/4960 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 39165 event pairs, 522 based on Foata normal form. 0/4346 useless extension candidates. Maximal degree in co-relation 3134. Up to 1024 conditions per place. [2023-01-28 01:50:41,626 INFO L82 GeneralOperation]: Start removeDead. Operand has 338 places, 382 transitions, 884 flow [2023-01-28 01:50:41,664 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 338 places, 382 transitions, 884 flow [2023-01-28 01:50:41,664 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:50:41,665 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 338 places, 382 transitions, 884 flow [2023-01-28 01:50:41,665 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 338 places, 382 transitions, 884 flow [2023-01-28 01:50:41,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 338 places, 382 transitions, 884 flow [2023-01-28 01:50:42,479 INFO L130 PetriNetUnfolder]: 1117/4960 cut-off events. [2023-01-28 01:50:42,479 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-01-28 01:50:42,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6045 conditions, 4960 events. 1117/4960 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 39165 event pairs, 522 based on Foata normal form. 0/4346 useless extension candidates. Maximal degree in co-relation 3134. Up to 1024 conditions per place. [2023-01-28 01:50:42,800 INFO L119 LiptonReduction]: Number of co-enabled transitions 100240 [2023-01-28 01:50:46,607 INFO L134 LiptonReduction]: Checked pairs total: 260911 [2023-01-28 01:50:46,607 INFO L136 LiptonReduction]: Total number of compositions: 258 [2023-01-28 01:50:46,608 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:50:46,609 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;@3a28f80b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:50:46,609 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:50:46,659 INFO L130 PetriNetUnfolder]: 115/418 cut-off events. [2023-01-28 01:50:46,660 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-01-28 01:50:46,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:50:46,660 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:50:46,660 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:50:46,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:50:46,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1572287570, now seen corresponding path program 1 times [2023-01-28 01:50:46,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:50:46,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539179829] [2023-01-28 01:50:46,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:50:46,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:50:46,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:50:46,683 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:50:46,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:50:46,696 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:50:46,696 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:50:46,697 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:50:46,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 01:50:46,697 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:50:46,697 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:50:46,697 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:50:46,697 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-01-28 01:50:46,719 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-01-28 01:50:46,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 370 places, 419 transitions, 982 flow [2023-01-28 01:50:48,603 INFO L130 PetriNetUnfolder]: 2408/9636 cut-off events. [2023-01-28 01:50:48,603 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-01-28 01:50:48,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12013 conditions, 9636 events. 2408/9636 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 87224 event pairs, 1291 based on Foata normal form. 0/8498 useless extension candidates. Maximal degree in co-relation 6027. Up to 2304 conditions per place. [2023-01-28 01:50:48,745 INFO L82 GeneralOperation]: Start removeDead. Operand has 370 places, 419 transitions, 982 flow [2023-01-28 01:50:48,819 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 370 places, 419 transitions, 982 flow [2023-01-28 01:50:48,819 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:50:48,819 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 370 places, 419 transitions, 982 flow [2023-01-28 01:50:48,819 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 370 places, 419 transitions, 982 flow [2023-01-28 01:50:48,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 370 places, 419 transitions, 982 flow [2023-01-28 01:50:50,598 INFO L130 PetriNetUnfolder]: 2408/9636 cut-off events. [2023-01-28 01:50:50,598 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-01-28 01:50:50,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12013 conditions, 9636 events. 2408/9636 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 87224 event pairs, 1291 based on Foata normal form. 0/8498 useless extension candidates. Maximal degree in co-relation 6027. Up to 2304 conditions per place. [2023-01-28 01:50:51,253 INFO L119 LiptonReduction]: Number of co-enabled transitions 124740 [2023-01-28 01:50:55,226 INFO L134 LiptonReduction]: Checked pairs total: 322625 [2023-01-28 01:50:55,227 INFO L136 LiptonReduction]: Total number of compositions: 285 [2023-01-28 01:50:55,232 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:50:55,232 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;@3a28f80b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:50:55,232 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:50:55,280 INFO L130 PetriNetUnfolder]: 159/557 cut-off events. [2023-01-28 01:50:55,280 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-01-28 01:50:55,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:50:55,280 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:50:55,280 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:50:55,281 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:50:55,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1994085671, now seen corresponding path program 1 times [2023-01-28 01:50:55,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:50:55,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310560460] [2023-01-28 01:50:55,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:50:55,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:50:55,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:50:55,303 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:50:55,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:50:55,362 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:50:55,362 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:50:55,362 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:50:55,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 01:50:55,362 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:50:55,362 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:50:55,362 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:50:55,362 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-01-28 01:50:55,387 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-01-28 01:50:55,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 402 places, 456 transitions, 1082 flow [2023-01-28 01:50:59,575 INFO L130 PetriNetUnfolder]: 5235/19176 cut-off events. [2023-01-28 01:50:59,575 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-01-28 01:50:59,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24382 conditions, 19176 events. 5235/19176 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 195855 event pairs, 3084 based on Foata normal form. 0/17002 useless extension candidates. Maximal degree in co-relation 11993. Up to 5120 conditions per place. [2023-01-28 01:50:59,899 INFO L82 GeneralOperation]: Start removeDead. Operand has 402 places, 456 transitions, 1082 flow [2023-01-28 01:51:00,110 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 402 places, 456 transitions, 1082 flow [2023-01-28 01:51:00,110 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:51:00,110 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 402 places, 456 transitions, 1082 flow [2023-01-28 01:51:00,110 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 402 places, 456 transitions, 1082 flow [2023-01-28 01:51:00,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 402 places, 456 transitions, 1082 flow [2023-01-28 01:51:04,212 INFO L130 PetriNetUnfolder]: 5235/19176 cut-off events. [2023-01-28 01:51:04,212 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-01-28 01:51:04,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24382 conditions, 19176 events. 5235/19176 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 195855 event pairs, 3084 based on Foata normal form. 0/17002 useless extension candidates. Maximal degree in co-relation 11993. Up to 5120 conditions per place. [2023-01-28 01:51:05,500 INFO L119 LiptonReduction]: Number of co-enabled transitions 151900 [2023-01-28 01:51:09,412 INFO L134 LiptonReduction]: Checked pairs total: 391729 [2023-01-28 01:51:09,413 INFO L136 LiptonReduction]: Total number of compositions: 306 [2023-01-28 01:51:09,414 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:51:09,414 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;@3a28f80b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:51:09,414 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:51:09,468 INFO L130 PetriNetUnfolder]: 234/772 cut-off events. [2023-01-28 01:51:09,468 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-01-28 01:51:09,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:51:09,469 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:51:09,469 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:51:09,469 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:51:09,469 INFO L85 PathProgramCache]: Analyzing trace with hash 163156306, now seen corresponding path program 1 times [2023-01-28 01:51:09,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:51:09,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247759556] [2023-01-28 01:51:09,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:51:09,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:51:09,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:51:09,484 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:51:09,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:51:09,498 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:51:09,498 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:51:09,498 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:51:09,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 01:51:09,498 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:51:09,498 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:51:09,498 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:51:09,499 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-01-28 01:51:09,523 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-01-28 01:51:09,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 434 places, 493 transitions, 1184 flow [2023-01-28 01:51:18,898 INFO L130 PetriNetUnfolder]: 11390/38700 cut-off events. [2023-01-28 01:51:18,899 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-01-28 01:51:19,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50064 conditions, 38700 events. 11390/38700 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 442806 event pairs, 7181 based on Foata normal form. 0/34466 useless extension candidates. Maximal degree in co-relation 24360. Up to 11264 conditions per place. [2023-01-28 01:51:19,725 INFO L82 GeneralOperation]: Start removeDead. Operand has 434 places, 493 transitions, 1184 flow [2023-01-28 01:51:20,287 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 434 places, 493 transitions, 1184 flow [2023-01-28 01:51:20,287 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:51:20,287 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 434 places, 493 transitions, 1184 flow [2023-01-28 01:51:20,287 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 434 places, 493 transitions, 1184 flow [2023-01-28 01:51:20,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 434 places, 493 transitions, 1184 flow [2023-01-28 01:51:29,717 INFO L130 PetriNetUnfolder]: 11390/38700 cut-off events. [2023-01-28 01:51:29,718 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-01-28 01:51:30,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50064 conditions, 38700 events. 11390/38700 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 442806 event pairs, 7181 based on Foata normal form. 0/34466 useless extension candidates. Maximal degree in co-relation 24360. Up to 11264 conditions per place. [2023-01-28 01:51:32,805 INFO L119 LiptonReduction]: Number of co-enabled transitions 181720 [2023-01-28 01:51:37,053 INFO L134 LiptonReduction]: Checked pairs total: 470856 [2023-01-28 01:51:37,054 INFO L136 LiptonReduction]: Total number of compositions: 324 [2023-01-28 01:51:37,055 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:51:37,055 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;@3a28f80b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:51:37,055 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:51:37,141 INFO L130 PetriNetUnfolder]: 349/1091 cut-off events. [2023-01-28 01:51:37,142 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-01-28 01:51:37,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:51:37,142 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:51:37,142 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:51:37,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:51:37,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1397897506, now seen corresponding path program 1 times [2023-01-28 01:51:37,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:51:37,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060116885] [2023-01-28 01:51:37,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:51:37,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:51:37,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:51:37,159 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:51:37,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:51:37,174 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:51:37,174 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:51:37,174 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:51:37,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 01:51:37,175 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:51:37,175 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:51:37,175 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:51:37,175 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-01-28 01:51:37,205 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-01-28 01:51:37,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 466 places, 530 transitions, 1288 flow [2023-01-28 01:51:58,003 INFO L130 PetriNetUnfolder]: 24713/78704 cut-off events. [2023-01-28 01:51:58,003 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-01-28 01:52:02,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103395 conditions, 78704 events. 24713/78704 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1326. Compared 984993 event pairs, 16398 based on Foata normal form. 0/70362 useless extension candidates. Maximal degree in co-relation 50040. Up to 24576 conditions per place. [2023-01-28 01:52:02,330 INFO L82 GeneralOperation]: Start removeDead. Operand has 466 places, 530 transitions, 1288 flow [2023-01-28 01:52:03,794 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 466 places, 530 transitions, 1288 flow [2023-01-28 01:52:03,794 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:52:03,794 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 466 places, 530 transitions, 1288 flow [2023-01-28 01:52:03,795 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 466 places, 530 transitions, 1288 flow [2023-01-28 01:52:03,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 466 places, 530 transitions, 1288 flow [2023-01-28 01:52:24,641 INFO L130 PetriNetUnfolder]: 24713/78704 cut-off events. [2023-01-28 01:52:24,642 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-01-28 01:52:27,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103395 conditions, 78704 events. 24713/78704 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1326. Compared 984993 event pairs, 16398 based on Foata normal form. 0/70362 useless extension candidates. Maximal degree in co-relation 50040. Up to 24576 conditions per place. [2023-01-28 01:52:32,717 INFO L119 LiptonReduction]: Number of co-enabled transitions 214200 [2023-01-28 01:52:37,012 INFO L134 LiptonReduction]: Checked pairs total: 508192 [2023-01-28 01:52:37,012 INFO L136 LiptonReduction]: Total number of compositions: 351 [2023-01-28 01:52:37,013 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:52:37,014 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;@3a28f80b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:52:37,014 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:52:37,146 INFO L130 PetriNetUnfolder]: 560/1604 cut-off events. [2023-01-28 01:52:37,146 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-01-28 01:52:37,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:52:37,147 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 01:52:37,147 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:52:37,147 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:52:37,147 INFO L85 PathProgramCache]: Analyzing trace with hash -742386210, now seen corresponding path program 1 times [2023-01-28 01:52:37,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:52:37,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863690886] [2023-01-28 01:52:37,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:52:37,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:52:37,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:52:37,163 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:52:37,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:52:37,179 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:52:37,179 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:52:37,179 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:52:37,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 01:52:37,179 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:52:37,180 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:52:37,180 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:52:37,180 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-01-28 01:52:37,209 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-01-28 01:52:37,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 498 places, 567 transitions, 1394 flow [2023-01-28 01:53:24,381 INFO L130 PetriNetUnfolder]: 53396/160692 cut-off events. [2023-01-28 01:53:24,382 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-01-28 01:53:35,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214071 conditions, 160692 events. 53396/160692 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2609. Compared 2173229 event pairs, 36879 based on Foata normal form. 0/144146 useless extension candidates. Maximal degree in co-relation 103369. Up to 53248 conditions per place. [2023-01-28 01:53:35,823 INFO L82 GeneralOperation]: Start removeDead. Operand has 498 places, 567 transitions, 1394 flow [2023-01-28 01:53:39,478 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 498 places, 567 transitions, 1394 flow [2023-01-28 01:53:39,479 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:53:39,479 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 498 places, 567 transitions, 1394 flow [2023-01-28 01:53:39,479 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 498 places, 567 transitions, 1394 flow [2023-01-28 01:53:39,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 498 places, 567 transitions, 1394 flow [2023-01-28 01:54:26,117 INFO L130 PetriNetUnfolder]: 53396/160692 cut-off events. [2023-01-28 01:54:26,117 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-01-28 01:54:37,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214071 conditions, 160692 events. 53396/160692 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2609. Compared 2173229 event pairs, 36879 based on Foata normal form. 0/144146 useless extension candidates. Maximal degree in co-relation 103369. Up to 53248 conditions per place. [2023-01-28 01:54:55,692 INFO L119 LiptonReduction]: Number of co-enabled transitions 249340 [2023-01-28 01:55:00,184 INFO L134 LiptonReduction]: Checked pairs total: 590721 [2023-01-28 01:55:00,184 INFO L136 LiptonReduction]: Total number of compositions: 375 [2023-01-28 01:55:00,185 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:55:00,186 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;@3a28f80b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:55:00,186 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:55:00,409 INFO L130 PetriNetUnfolder]: 913/2408 cut-off events. [2023-01-28 01:55:00,409 INFO L131 PetriNetUnfolder]: For 1672/1672 co-relation queries the response was YES. [2023-01-28 01:55:00,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:55:00,409 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:55:00,409 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:55:00,410 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:55:00,410 INFO L85 PathProgramCache]: Analyzing trace with hash 999933196, now seen corresponding path program 1 times [2023-01-28 01:55:00,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:55:00,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110676302] [2023-01-28 01:55:00,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:55:00,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:55:00,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:55:00,430 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:55:00,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:55:00,453 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:55:00,453 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:55:00,453 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:55:00,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 01:55:00,453 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:55:00,453 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:55:00,453 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:55:00,453 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-01-28 01:55:00,482 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-01-28 01:55:00,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 530 places, 604 transitions, 1502 flow