/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_61-invariant_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 01:50:39,196 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 01:50:39,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 01:50:39,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 01:50:39,226 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 01:50:39,228 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 01:50:39,231 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 01:50:39,233 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 01:50:39,233 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 01:50:39,237 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 01:50:39,238 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 01:50:39,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 01:50:39,239 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 01:50:39,241 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 01:50:39,242 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 01:50:39,243 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 01:50:39,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 01:50:39,244 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 01:50:39,245 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 01:50:39,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 01:50:39,249 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 01:50:39,251 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 01:50:39,251 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 01:50:39,252 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 01:50:39,257 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 01:50:39,257 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 01:50:39,257 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 01:50:39,258 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 01:50:39,258 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 01:50:39,258 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 01:50:39,259 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 01:50:39,259 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 01:50:39,259 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 01:50:39,260 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 01:50:39,260 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 01:50:39,260 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 01:50:39,261 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 01:50:39,261 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 01:50:39,261 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 01:50:39,262 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 01:50:39,262 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 01:50:39,265 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 01:50:39,299 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 01:50:39,299 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 01:50:39,299 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 01:50:39,300 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 01:50:39,300 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 01:50:39,300 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 01:50:39,300 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 01:50:39,300 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 01:50:39,300 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 01:50:39,308 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 01:50:39,308 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 01:50:39,308 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 01:50:39,308 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 01:50:39,308 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 01:50:39,308 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 01:50:39,308 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 01:50:39,309 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 01:50:39,309 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 01:50:39,309 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 01:50:39,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 01:50:39,309 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 01:50:39,309 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 01:50:39,309 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 01:50:39,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:50:39,309 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 01:50:39,309 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 01:50:39,310 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 01:50:39,310 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 01:50:39,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 01:50:39,310 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 01:50:39,310 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 01:50:39,310 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 01:50:39,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 01:50:39,462 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 01:50:39,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 01:50:39,464 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 01:50:39,464 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 01:50:39,465 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_racing.i [2023-01-28 01:50:40,479 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 01:50:40,664 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 01:50:40,665 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_racing.i [2023-01-28 01:50:40,676 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12bbbc28f/4d09ba0016324723b2318289ecd2c251/FLAGddc95415e [2023-01-28 01:50:40,687 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12bbbc28f/4d09ba0016324723b2318289ecd2c251 [2023-01-28 01:50:40,689 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 01:50:40,691 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 01:50:40,692 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 01:50:40,692 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 01:50:40,694 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 01:50:40,694 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:50:40" (1/1) ... [2023-01-28 01:50:40,695 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@343f16b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:40, skipping insertion in model container [2023-01-28 01:50:40,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:50:40" (1/1) ... [2023-01-28 01:50:40,699 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 01:50:40,740 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 01:50:40,976 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_61-invariant_racing.i[30176,30189] [2023-01-28 01:50:40,992 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:50:41,000 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 01:50:41,028 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_61-invariant_racing.i[30176,30189] [2023-01-28 01:50:41,045 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:50:41,074 INFO L208 MainTranslator]: Completed translation [2023-01-28 01:50:41,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:41 WrapperNode [2023-01-28 01:50:41,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 01:50:41,076 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 01:50:41,076 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 01:50:41,076 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 01:50:41,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:41" (1/1) ... [2023-01-28 01:50:41,091 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:41" (1/1) ... [2023-01-28 01:50:41,104 INFO L138 Inliner]: procedures = 170, calls = 32, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 96 [2023-01-28 01:50:41,104 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 01:50:41,105 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 01:50:41,105 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 01:50:41,105 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 01:50:41,111 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:41" (1/1) ... [2023-01-28 01:50:41,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:41" (1/1) ... [2023-01-28 01:50:41,114 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:41" (1/1) ... [2023-01-28 01:50:41,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:41" (1/1) ... [2023-01-28 01:50:41,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:41" (1/1) ... [2023-01-28 01:50:41,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:41" (1/1) ... [2023-01-28 01:50:41,136 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:41" (1/1) ... [2023-01-28 01:50:41,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:41" (1/1) ... [2023-01-28 01:50:41,139 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 01:50:41,139 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 01:50:41,139 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 01:50:41,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 01:50:41,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:41" (1/1) ... [2023-01-28 01:50:41,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:50:41,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 01:50:41,162 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 01:50:41,191 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 01:50:41,211 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 01:50:41,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 01:50:41,211 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 01:50:41,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 01:50:41,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 01:50:41,212 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-01-28 01:50:41,212 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-01-28 01:50:41,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 01:50:41,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 01:50:41,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 01:50:41,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 01:50:41,214 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 01:50:41,383 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 01:50:41,384 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 01:50:41,573 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 01:50:41,578 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 01:50:41,578 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-01-28 01:50:41,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:50:41 BoogieIcfgContainer [2023-01-28 01:50:41,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 01:50:41,581 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 01:50:41,581 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 01:50:41,583 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 01:50:41,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 01:50:40" (1/3) ... [2023-01-28 01:50:41,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25959e8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:50:41, skipping insertion in model container [2023-01-28 01:50:41,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:50:41" (2/3) ... [2023-01-28 01:50:41,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25959e8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:50:41, skipping insertion in model container [2023-01-28 01:50:41,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:50:41" (3/3) ... [2023-01-28 01:50:41,587 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_61-invariant_racing.i [2023-01-28 01:50:41,598 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 01:50:41,599 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 01:50:41,599 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 01:50:41,657 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-01-28 01:50:41,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 124 transitions, 256 flow [2023-01-28 01:50:41,748 INFO L130 PetriNetUnfolder]: 30/179 cut-off events. [2023-01-28 01:50:41,749 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-28 01:50:41,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 179 events. 30/179 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 522 event pairs, 0 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 91. Up to 6 conditions per place. [2023-01-28 01:50:41,753 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 124 transitions, 256 flow [2023-01-28 01:50:41,757 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 119 transitions, 243 flow [2023-01-28 01:50:41,759 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:50:41,769 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 119 transitions, 243 flow [2023-01-28 01:50:41,771 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 119 transitions, 243 flow [2023-01-28 01:50:41,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 119 transitions, 243 flow [2023-01-28 01:50:41,837 INFO L130 PetriNetUnfolder]: 29/174 cut-off events. [2023-01-28 01:50:41,837 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:50:41,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 174 events. 29/174 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 512 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 91. Up to 6 conditions per place. [2023-01-28 01:50:41,840 INFO L119 LiptonReduction]: Number of co-enabled transitions 3782 [2023-01-28 01:50:43,575 INFO L134 LiptonReduction]: Checked pairs total: 9323 [2023-01-28 01:50:43,575 INFO L136 LiptonReduction]: Total number of compositions: 86 [2023-01-28 01:50:43,592 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:50:43,596 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;@66909202, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:50:43,597 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:50:43,600 INFO L130 PetriNetUnfolder]: 4/29 cut-off events. [2023-01-28 01:50:43,600 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:50:43,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:50:43,601 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-01-28 01:50:43,601 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:50:43,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:50:43,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1053724504, now seen corresponding path program 1 times [2023-01-28 01:50:43,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:50:43,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059522469] [2023-01-28 01:50:43,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:50:43,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:50:43,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:50:43,704 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:50:43,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:50:43,736 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:50:43,737 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:50:43,738 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:50:43,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 01:50:43,739 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:50:43,743 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:50:43,744 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:50:43,744 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-01-28 01:50:43,767 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 01:50:43,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 135 places, 157 transitions, 332 flow [2023-01-28 01:50:43,800 INFO L130 PetriNetUnfolder]: 51/291 cut-off events. [2023-01-28 01:50:43,800 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-01-28 01:50:43,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 291 events. 51/291 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 965 event pairs, 0 based on Foata normal form. 0/233 useless extension candidates. Maximal degree in co-relation 181. Up to 9 conditions per place. [2023-01-28 01:50:43,804 INFO L82 GeneralOperation]: Start removeDead. Operand has 135 places, 157 transitions, 332 flow [2023-01-28 01:50:43,805 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 157 transitions, 332 flow [2023-01-28 01:50:43,806 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:50:43,806 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 135 places, 157 transitions, 332 flow [2023-01-28 01:50:43,806 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 135 places, 157 transitions, 332 flow [2023-01-28 01:50:43,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 135 places, 157 transitions, 332 flow [2023-01-28 01:50:43,824 INFO L130 PetriNetUnfolder]: 51/291 cut-off events. [2023-01-28 01:50:43,824 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-01-28 01:50:43,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 291 events. 51/291 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 965 event pairs, 0 based on Foata normal form. 0/233 useless extension candidates. Maximal degree in co-relation 181. Up to 9 conditions per place. [2023-01-28 01:50:43,830 INFO L119 LiptonReduction]: Number of co-enabled transitions 10168 [2023-01-28 01:50:45,611 INFO L134 LiptonReduction]: Checked pairs total: 31064 [2023-01-28 01:50:45,611 INFO L136 LiptonReduction]: Total number of compositions: 103 [2023-01-28 01:50:45,613 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:50:45,614 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;@66909202, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:50:45,614 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:50:45,619 INFO L130 PetriNetUnfolder]: 22/88 cut-off events. [2023-01-28 01:50:45,619 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 01:50:45,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:50:45,619 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-01-28 01:50:45,620 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:50:45,620 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:50:45,620 INFO L85 PathProgramCache]: Analyzing trace with hash 964070072, now seen corresponding path program 1 times [2023-01-28 01:50:45,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:50:45,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223687055] [2023-01-28 01:50:45,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:50:45,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:50:45,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:50:45,642 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:50:45,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:50:45,656 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:50:45,656 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:50:45,656 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:50:45,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 01:50:45,656 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:50:45,657 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:50:45,657 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:50:45,657 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-01-28 01:50:45,671 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 01:50:45,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 190 transitions, 410 flow [2023-01-28 01:50:45,708 INFO L130 PetriNetUnfolder]: 77/434 cut-off events. [2023-01-28 01:50:45,708 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-01-28 01:50:45,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 434 events. 77/434 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1576 event pairs, 1 based on Foata normal form. 0/349 useless extension candidates. Maximal degree in co-relation 299. Up to 16 conditions per place. [2023-01-28 01:50:45,711 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 190 transitions, 410 flow [2023-01-28 01:50:45,713 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 190 transitions, 410 flow [2023-01-28 01:50:45,714 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:50:45,714 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 162 places, 190 transitions, 410 flow [2023-01-28 01:50:45,715 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 162 places, 190 transitions, 410 flow [2023-01-28 01:50:45,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 190 transitions, 410 flow [2023-01-28 01:50:45,757 INFO L130 PetriNetUnfolder]: 77/434 cut-off events. [2023-01-28 01:50:45,761 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-01-28 01:50:45,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 434 events. 77/434 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1576 event pairs, 1 based on Foata normal form. 0/349 useless extension candidates. Maximal degree in co-relation 299. Up to 16 conditions per place. [2023-01-28 01:50:45,774 INFO L119 LiptonReduction]: Number of co-enabled transitions 18414 [2023-01-28 01:50:47,556 INFO L134 LiptonReduction]: Checked pairs total: 61724 [2023-01-28 01:50:47,557 INFO L136 LiptonReduction]: Total number of compositions: 118 [2023-01-28 01:50:47,558 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:50:47,560 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;@66909202, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:50:47,560 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:50:47,566 INFO L130 PetriNetUnfolder]: 38/142 cut-off events. [2023-01-28 01:50:47,567 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-01-28 01:50:47,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:50:47,567 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-01-28 01:50:47,567 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:50:47,567 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:50:47,567 INFO L85 PathProgramCache]: Analyzing trace with hash 378172606, now seen corresponding path program 1 times [2023-01-28 01:50:47,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:50:47,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029209106] [2023-01-28 01:50:47,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:50:47,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:50:47,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:50:47,585 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:50:47,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:50:47,600 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:50:47,600 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:50:47,601 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:50:47,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 01:50:47,601 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:50:47,601 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:50:47,601 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:50:47,601 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-01-28 01:50:47,616 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-28 01:50:47,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 189 places, 223 transitions, 490 flow [2023-01-28 01:50:47,670 INFO L130 PetriNetUnfolder]: 115/641 cut-off events. [2023-01-28 01:50:47,670 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-01-28 01:50:47,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 696 conditions, 641 events. 115/641 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2577 event pairs, 6 based on Foata normal form. 0/521 useless extension candidates. Maximal degree in co-relation 454. Up to 32 conditions per place. [2023-01-28 01:50:47,676 INFO L82 GeneralOperation]: Start removeDead. Operand has 189 places, 223 transitions, 490 flow [2023-01-28 01:50:47,680 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 189 places, 223 transitions, 490 flow [2023-01-28 01:50:47,681 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:50:47,681 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 189 places, 223 transitions, 490 flow [2023-01-28 01:50:47,681 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 189 places, 223 transitions, 490 flow [2023-01-28 01:50:47,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 189 places, 223 transitions, 490 flow [2023-01-28 01:50:47,726 INFO L130 PetriNetUnfolder]: 115/641 cut-off events. [2023-01-28 01:50:47,726 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-01-28 01:50:47,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 696 conditions, 641 events. 115/641 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2577 event pairs, 6 based on Foata normal form. 0/521 useless extension candidates. Maximal degree in co-relation 454. Up to 32 conditions per place. [2023-01-28 01:50:47,743 INFO L119 LiptonReduction]: Number of co-enabled transitions 28768 [2023-01-28 01:50:49,395 INFO L134 LiptonReduction]: Checked pairs total: 101367 [2023-01-28 01:50:49,395 INFO L136 LiptonReduction]: Total number of compositions: 136 [2023-01-28 01:50:49,398 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:50:49,400 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;@66909202, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:50:49,400 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:50:49,442 INFO L130 PetriNetUnfolder]: 56/200 cut-off events. [2023-01-28 01:50:49,443 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2023-01-28 01:50:49,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:50:49,443 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-01-28 01:50:49,443 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:50:49,443 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:50:49,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1033447836, now seen corresponding path program 1 times [2023-01-28 01:50:49,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:50:49,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202014064] [2023-01-28 01:50:49,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:50:49,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:50:49,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:50:49,469 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:50:49,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:50:49,505 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:50:49,505 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:50:49,505 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:50:49,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 01:50:49,505 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:50:49,506 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:50:49,506 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:50:49,506 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-01-28 01:50:49,525 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-01-28 01:50:49,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 216 places, 256 transitions, 572 flow [2023-01-28 01:50:49,612 INFO L130 PetriNetUnfolder]: 181/980 cut-off events. [2023-01-28 01:50:49,613 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-01-28 01:50:49,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1091 conditions, 980 events. 181/980 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 4483 event pairs, 23 based on Foata normal form. 0/809 useless extension candidates. Maximal degree in co-relation 686. Up to 80 conditions per place. [2023-01-28 01:50:49,623 INFO L82 GeneralOperation]: Start removeDead. Operand has 216 places, 256 transitions, 572 flow [2023-01-28 01:50:49,629 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 216 places, 256 transitions, 572 flow [2023-01-28 01:50:49,629 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:50:49,629 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 216 places, 256 transitions, 572 flow [2023-01-28 01:50:49,629 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 216 places, 256 transitions, 572 flow [2023-01-28 01:50:49,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 216 places, 256 transitions, 572 flow [2023-01-28 01:50:49,710 INFO L130 PetriNetUnfolder]: 181/980 cut-off events. [2023-01-28 01:50:49,710 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-01-28 01:50:49,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1091 conditions, 980 events. 181/980 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 4483 event pairs, 23 based on Foata normal form. 0/809 useless extension candidates. Maximal degree in co-relation 686. Up to 80 conditions per place. [2023-01-28 01:50:49,736 INFO L119 LiptonReduction]: Number of co-enabled transitions 41230 [2023-01-28 01:50:51,679 INFO L134 LiptonReduction]: Checked pairs total: 148905 [2023-01-28 01:50:51,679 INFO L136 LiptonReduction]: Total number of compositions: 152 [2023-01-28 01:50:51,680 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:50:51,681 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;@66909202, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:50:51,681 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:50:51,696 INFO L130 PetriNetUnfolder]: 73/265 cut-off events. [2023-01-28 01:50:51,696 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2023-01-28 01:50:51,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:50:51,696 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:50:51,696 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:50:51,697 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:50:51,697 INFO L85 PathProgramCache]: Analyzing trace with hash -113812710, now seen corresponding path program 1 times [2023-01-28 01:50:51,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:50:51,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854591733] [2023-01-28 01:50:51,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:50:51,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:50:51,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:50:51,734 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:50:51,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:50:51,752 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:50:51,752 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:50:51,754 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:50:51,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 01:50:51,760 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:50:51,761 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:50:51,761 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:50:51,761 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-01-28 01:50:51,789 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-01-28 01:50:51,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 243 places, 289 transitions, 656 flow [2023-01-28 01:50:51,948 INFO L130 PetriNetUnfolder]: 311/1591 cut-off events. [2023-01-28 01:50:51,948 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-01-28 01:50:51,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1823 conditions, 1591 events. 311/1591 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 8718 event pairs, 72 based on Foata normal form. 0/1337 useless extension candidates. Maximal degree in co-relation 1079. Up to 192 conditions per place. [2023-01-28 01:50:51,970 INFO L82 GeneralOperation]: Start removeDead. Operand has 243 places, 289 transitions, 656 flow [2023-01-28 01:50:51,983 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 243 places, 289 transitions, 656 flow [2023-01-28 01:50:51,983 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:50:51,983 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 243 places, 289 transitions, 656 flow [2023-01-28 01:50:51,983 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 243 places, 289 transitions, 656 flow [2023-01-28 01:50:51,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 243 places, 289 transitions, 656 flow [2023-01-28 01:50:52,183 INFO L130 PetriNetUnfolder]: 311/1591 cut-off events. [2023-01-28 01:50:52,183 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-01-28 01:50:52,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1823 conditions, 1591 events. 311/1591 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 8718 event pairs, 72 based on Foata normal form. 0/1337 useless extension candidates. Maximal degree in co-relation 1079. Up to 192 conditions per place. [2023-01-28 01:50:52,248 INFO L119 LiptonReduction]: Number of co-enabled transitions 55800 [2023-01-28 01:50:54,231 INFO L134 LiptonReduction]: Checked pairs total: 204764 [2023-01-28 01:50:54,231 INFO L136 LiptonReduction]: Total number of compositions: 171 [2023-01-28 01:50:54,232 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:50:54,233 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;@66909202, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:50:54,233 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:50:54,250 INFO L130 PetriNetUnfolder]: 92/334 cut-off events. [2023-01-28 01:50:54,250 INFO L131 PetriNetUnfolder]: For 70/70 co-relation queries the response was YES. [2023-01-28 01:50:54,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:50:54,250 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:50:54,251 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:50:54,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:50:54,251 INFO L85 PathProgramCache]: Analyzing trace with hash 801598353, now seen corresponding path program 1 times [2023-01-28 01:50:54,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:50:54,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61633342] [2023-01-28 01:50:54,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:50:54,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:50:54,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:50:54,266 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:50:54,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:50:54,278 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:50:54,278 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:50:54,278 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:50:54,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 01:50:54,278 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:50:54,279 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:50:54,279 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:50:54,279 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-01-28 01:50:54,293 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-01-28 01:50:54,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 270 places, 322 transitions, 742 flow [2023-01-28 01:50:54,647 INFO L130 PetriNetUnfolder]: 585/2762 cut-off events. [2023-01-28 01:50:54,647 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-01-28 01:50:54,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3260 conditions, 2762 events. 585/2762 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 18067 event pairs, 201 based on Foata normal form. 0/2361 useless extension candidates. Maximal degree in co-relation 1809. Up to 448 conditions per place. [2023-01-28 01:50:54,709 INFO L82 GeneralOperation]: Start removeDead. Operand has 270 places, 322 transitions, 742 flow [2023-01-28 01:50:54,733 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 270 places, 322 transitions, 742 flow [2023-01-28 01:50:54,733 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:50:54,733 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 270 places, 322 transitions, 742 flow [2023-01-28 01:50:54,733 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 270 places, 322 transitions, 742 flow [2023-01-28 01:50:54,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 270 places, 322 transitions, 742 flow [2023-01-28 01:50:55,090 INFO L130 PetriNetUnfolder]: 585/2762 cut-off events. [2023-01-28 01:50:55,090 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-01-28 01:50:55,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3260 conditions, 2762 events. 585/2762 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 18067 event pairs, 201 based on Foata normal form. 0/2361 useless extension candidates. Maximal degree in co-relation 1809. Up to 448 conditions per place. [2023-01-28 01:50:55,192 INFO L119 LiptonReduction]: Number of co-enabled transitions 72478 [2023-01-28 01:50:57,211 INFO L134 LiptonReduction]: Checked pairs total: 274556 [2023-01-28 01:50:57,212 INFO L136 LiptonReduction]: Total number of compositions: 184 [2023-01-28 01:50:57,213 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:50:57,213 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;@66909202, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:50:57,213 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:50:57,239 INFO L130 PetriNetUnfolder]: 122/434 cut-off events. [2023-01-28 01:50:57,239 INFO L131 PetriNetUnfolder]: For 113/113 co-relation queries the response was YES. [2023-01-28 01:50:57,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:50:57,240 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:50:57,240 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:50:57,240 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:50:57,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1748661069, now seen corresponding path program 1 times [2023-01-28 01:50:57,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:50:57,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649675971] [2023-01-28 01:50:57,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:50:57,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:50:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:50:57,254 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:50:57,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:50:57,266 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:50:57,266 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:50:57,266 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:50:57,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 01:50:57,266 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:50:57,267 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:50:57,267 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:50:57,267 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-01-28 01:50:57,285 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-01-28 01:50:57,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 297 places, 355 transitions, 830 flow [2023-01-28 01:50:58,096 INFO L130 PetriNetUnfolder]: 1179/5085 cut-off events. [2023-01-28 01:50:58,096 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-01-28 01:50:58,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6170 conditions, 5085 events. 1179/5085 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 39262 event pairs, 522 based on Foata normal form. 0/4409 useless extension candidates. Maximal degree in co-relation 3244. Up to 1024 conditions per place. [2023-01-28 01:50:58,153 INFO L82 GeneralOperation]: Start removeDead. Operand has 297 places, 355 transitions, 830 flow [2023-01-28 01:50:58,184 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 297 places, 355 transitions, 830 flow [2023-01-28 01:50:58,184 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:50:58,185 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 297 places, 355 transitions, 830 flow [2023-01-28 01:50:58,185 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 297 places, 355 transitions, 830 flow [2023-01-28 01:50:58,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 297 places, 355 transitions, 830 flow [2023-01-28 01:50:58,913 INFO L130 PetriNetUnfolder]: 1179/5085 cut-off events. [2023-01-28 01:50:58,913 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-01-28 01:50:58,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6170 conditions, 5085 events. 1179/5085 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 39262 event pairs, 522 based on Foata normal form. 0/4409 useless extension candidates. Maximal degree in co-relation 3244. Up to 1024 conditions per place. [2023-01-28 01:50:59,104 INFO L119 LiptonReduction]: Number of co-enabled transitions 91264 [2023-01-28 01:51:01,352 INFO L134 LiptonReduction]: Checked pairs total: 346680 [2023-01-28 01:51:01,352 INFO L136 LiptonReduction]: Total number of compositions: 199 [2023-01-28 01:51:01,353 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:51:01,354 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;@66909202, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:51:01,354 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:51:01,395 INFO L130 PetriNetUnfolder]: 154/541 cut-off events. [2023-01-28 01:51:01,395 INFO L131 PetriNetUnfolder]: For 177/177 co-relation queries the response was YES. [2023-01-28 01:51:01,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:51:01,395 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:51:01,395 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:51:01,395 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:51:01,396 INFO L85 PathProgramCache]: Analyzing trace with hash -462159935, now seen corresponding path program 1 times [2023-01-28 01:51:01,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:51:01,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614005120] [2023-01-28 01:51:01,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:51:01,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:51:01,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:51:01,423 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:51:01,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:51:01,463 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:51:01,463 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:51:01,463 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:51:01,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 01:51:01,463 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:51:01,464 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:51:01,464 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:51:01,464 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-01-28 01:51:01,489 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-01-28 01:51:01,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 324 places, 388 transitions, 920 flow [2023-01-28 01:51:03,172 INFO L130 PetriNetUnfolder]: 2477/9776 cut-off events. [2023-01-28 01:51:03,172 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-01-28 01:51:03,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12153 conditions, 9776 events. 2477/9776 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 88837 event pairs, 1291 based on Foata normal form. 0/8569 useless extension candidates. Maximal degree in co-relation 6152. Up to 2304 conditions per place. [2023-01-28 01:51:03,304 INFO L82 GeneralOperation]: Start removeDead. Operand has 324 places, 388 transitions, 920 flow [2023-01-28 01:51:03,378 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 324 places, 388 transitions, 920 flow [2023-01-28 01:51:03,379 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:51:03,379 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 324 places, 388 transitions, 920 flow [2023-01-28 01:51:03,379 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 324 places, 388 transitions, 920 flow [2023-01-28 01:51:03,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 324 places, 388 transitions, 920 flow [2023-01-28 01:51:05,098 INFO L130 PetriNetUnfolder]: 2477/9776 cut-off events. [2023-01-28 01:51:05,098 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-01-28 01:51:05,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12153 conditions, 9776 events. 2477/9776 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 88837 event pairs, 1291 based on Foata normal form. 0/8569 useless extension candidates. Maximal degree in co-relation 6152. Up to 2304 conditions per place. [2023-01-28 01:51:05,531 INFO L119 LiptonReduction]: Number of co-enabled transitions 112158 [2023-01-28 01:51:07,889 INFO L134 LiptonReduction]: Checked pairs total: 438032 [2023-01-28 01:51:07,889 INFO L136 LiptonReduction]: Total number of compositions: 217 [2023-01-28 01:51:07,890 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:51:07,891 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;@66909202, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:51:07,891 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:51:07,940 INFO L130 PetriNetUnfolder]: 200/687 cut-off events. [2023-01-28 01:51:07,940 INFO L131 PetriNetUnfolder]: For 272/272 co-relation queries the response was YES. [2023-01-28 01:51:07,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:51:07,940 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:51:07,940 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:51:07,940 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:51:07,940 INFO L85 PathProgramCache]: Analyzing trace with hash 2043742784, now seen corresponding path program 1 times [2023-01-28 01:51:07,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:51:07,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563157484] [2023-01-28 01:51:07,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:51:07,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:51:07,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:51:07,954 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:51:07,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:51:07,967 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:51:07,967 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:51:07,968 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:51:07,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 01:51:07,968 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:51:07,968 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:51:07,968 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:51:07,968 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-01-28 01:51:07,988 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-01-28 01:51:07,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 351 places, 421 transitions, 1012 flow [2023-01-28 01:51:11,825 INFO L130 PetriNetUnfolder]: 5311/19331 cut-off events. [2023-01-28 01:51:11,826 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-01-28 01:51:12,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24537 conditions, 19331 events. 5311/19331 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 197972 event pairs, 3084 based on Foata normal form. 0/17081 useless extension candidates. Maximal degree in co-relation 12133. Up to 5120 conditions per place. [2023-01-28 01:51:12,291 INFO L82 GeneralOperation]: Start removeDead. Operand has 351 places, 421 transitions, 1012 flow [2023-01-28 01:51:12,464 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 351 places, 421 transitions, 1012 flow [2023-01-28 01:51:12,464 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:51:12,464 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 351 places, 421 transitions, 1012 flow [2023-01-28 01:51:12,465 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 351 places, 421 transitions, 1012 flow [2023-01-28 01:51:12,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 351 places, 421 transitions, 1012 flow [2023-01-28 01:51:16,209 INFO L130 PetriNetUnfolder]: 5311/19331 cut-off events. [2023-01-28 01:51:16,209 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-01-28 01:51:16,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24537 conditions, 19331 events. 5311/19331 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 197972 event pairs, 3084 based on Foata normal form. 0/17081 useless extension candidates. Maximal degree in co-relation 12133. Up to 5120 conditions per place. [2023-01-28 01:51:17,389 INFO L119 LiptonReduction]: Number of co-enabled transitions 135160 [2023-01-28 01:51:20,007 INFO L134 LiptonReduction]: Checked pairs total: 527991 [2023-01-28 01:51:20,007 INFO L136 LiptonReduction]: Total number of compositions: 234 [2023-01-28 01:51:20,008 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:51:20,008 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;@66909202, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:51:20,009 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:51:20,091 INFO L130 PetriNetUnfolder]: 265/878 cut-off events. [2023-01-28 01:51:20,091 INFO L131 PetriNetUnfolder]: For 408/408 co-relation queries the response was YES. [2023-01-28 01:51:20,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:51:20,092 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:51:20,092 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:51:20,092 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:51:20,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1554715236, now seen corresponding path program 1 times [2023-01-28 01:51:20,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:51:20,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043336080] [2023-01-28 01:51:20,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:51:20,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:51:20,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:51:20,110 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:51:20,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:51:20,124 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:51:20,125 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:51:20,125 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:51:20,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 01:51:20,125 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:51:20,125 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:51:20,125 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:51:20,125 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-01-28 01:51:20,149 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-01-28 01:51:20,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 378 places, 454 transitions, 1106 flow [2023-01-28 01:51:28,638 INFO L130 PetriNetUnfolder]: 11473/38870 cut-off events. [2023-01-28 01:51:28,638 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-01-28 01:51:29,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50234 conditions, 38870 events. 11473/38870 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 744. Compared 440222 event pairs, 7181 based on Foata normal form. 0/34553 useless extension candidates. Maximal degree in co-relation 24516. Up to 11264 conditions per place. [2023-01-28 01:51:29,454 INFO L82 GeneralOperation]: Start removeDead. Operand has 378 places, 454 transitions, 1106 flow [2023-01-28 01:51:30,075 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 378 places, 454 transitions, 1106 flow [2023-01-28 01:51:30,075 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:51:30,075 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 378 places, 454 transitions, 1106 flow [2023-01-28 01:51:30,075 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 378 places, 454 transitions, 1106 flow [2023-01-28 01:51:30,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 378 places, 454 transitions, 1106 flow [2023-01-28 01:51:38,662 INFO L130 PetriNetUnfolder]: 11473/38870 cut-off events. [2023-01-28 01:51:38,662 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-01-28 01:51:39,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50234 conditions, 38870 events. 11473/38870 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 744. Compared 440222 event pairs, 7181 based on Foata normal form. 0/34553 useless extension candidates. Maximal degree in co-relation 24516. Up to 11264 conditions per place. [2023-01-28 01:51:41,659 INFO L119 LiptonReduction]: Number of co-enabled transitions 160270 [2023-01-28 01:51:44,160 INFO L134 LiptonReduction]: Checked pairs total: 637991 [2023-01-28 01:51:44,161 INFO L136 LiptonReduction]: Total number of compositions: 253 [2023-01-28 01:51:44,162 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:51:44,163 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;@66909202, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:51:44,163 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:51:44,266 INFO L130 PetriNetUnfolder]: 360/1139 cut-off events. [2023-01-28 01:51:44,266 INFO L131 PetriNetUnfolder]: For 614/614 co-relation queries the response was YES. [2023-01-28 01:51:44,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:51:44,266 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:51:44,267 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:51:44,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:51:44,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1490923832, now seen corresponding path program 1 times [2023-01-28 01:51:44,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:51:44,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204458692] [2023-01-28 01:51:44,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:51:44,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:51:44,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:51:44,302 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:51:44,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:51:44,338 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:51:44,338 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:51:44,338 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:51:44,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 01:51:44,338 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:51:44,339 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:51:44,339 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:51:44,339 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-01-28 01:51:44,359 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-01-28 01:51:44,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 405 places, 487 transitions, 1202 flow [2023-01-28 01:52:03,274 INFO L130 PetriNetUnfolder]: 24803/78889 cut-off events. [2023-01-28 01:52:03,274 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-01-28 01:52:07,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103580 conditions, 78889 events. 24803/78889 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1398. Compared 985927 event pairs, 16398 based on Foata normal form. 0/70457 useless extension candidates. Maximal degree in co-relation 50213. Up to 24576 conditions per place. [2023-01-28 01:52:07,575 INFO L82 GeneralOperation]: Start removeDead. Operand has 405 places, 487 transitions, 1202 flow [2023-01-28 01:52:09,304 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 405 places, 487 transitions, 1202 flow [2023-01-28 01:52:09,305 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:52:09,305 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 405 places, 487 transitions, 1202 flow [2023-01-28 01:52:09,305 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 405 places, 487 transitions, 1202 flow [2023-01-28 01:52:09,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 405 places, 487 transitions, 1202 flow [2023-01-28 01:52:29,809 INFO L130 PetriNetUnfolder]: 24803/78889 cut-off events. [2023-01-28 01:52:29,809 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-01-28 01:52:34,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103580 conditions, 78889 events. 24803/78889 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1398. Compared 985927 event pairs, 16398 based on Foata normal form. 0/70457 useless extension candidates. Maximal degree in co-relation 50213. Up to 24576 conditions per place. [2023-01-28 01:52:41,709 INFO L119 LiptonReduction]: Number of co-enabled transitions 187488 [2023-01-28 01:52:43,615 INFO L134 LiptonReduction]: Checked pairs total: 737192 [2023-01-28 01:52:43,615 INFO L136 LiptonReduction]: Total number of compositions: 267 [2023-01-28 01:52:43,618 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:52:43,619 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;@66909202, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:52:43,619 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:52:43,781 INFO L130 PetriNetUnfolder]: 527/1554 cut-off events. [2023-01-28 01:52:43,781 INFO L131 PetriNetUnfolder]: For 921/921 co-relation queries the response was YES. [2023-01-28 01:52:43,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:52:43,781 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 01:52:43,781 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:52:43,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:52:43,781 INFO L85 PathProgramCache]: Analyzing trace with hash 147628838, now seen corresponding path program 1 times [2023-01-28 01:52:43,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:52:43,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384054729] [2023-01-28 01:52:43,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:52:43,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:52:43,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:52:43,818 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:52:43,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:52:43,836 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:52:43,837 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:52:43,837 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:52:43,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 01:52:43,837 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:52:43,839 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:52:43,839 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:52:43,840 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-01-28 01:52:43,867 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-01-28 01:52:43,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 432 places, 520 transitions, 1300 flow [2023-01-28 01:53:26,460 INFO L130 PetriNetUnfolder]: 53493/160892 cut-off events. [2023-01-28 01:53:26,460 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-01-28 01:53:36,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214271 conditions, 160892 events. 53493/160892 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2784. Compared 2179284 event pairs, 36879 based on Foata normal form. 0/144249 useless extension candidates. Maximal degree in co-relation 103559. Up to 53248 conditions per place. [2023-01-28 01:53:36,605 INFO L82 GeneralOperation]: Start removeDead. Operand has 432 places, 520 transitions, 1300 flow [2023-01-28 01:53:41,129 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 432 places, 520 transitions, 1300 flow [2023-01-28 01:53:41,130 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:53:41,131 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 432 places, 520 transitions, 1300 flow [2023-01-28 01:53:41,132 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 432 places, 520 transitions, 1300 flow [2023-01-28 01:53:41,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 432 places, 520 transitions, 1300 flow [2023-01-28 01:54:26,869 INFO L130 PetriNetUnfolder]: 53493/160892 cut-off events. [2023-01-28 01:54:26,869 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-01-28 01:54:37,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214271 conditions, 160892 events. 53493/160892 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2784. Compared 2179284 event pairs, 36879 based on Foata normal form. 0/144249 useless extension candidates. Maximal degree in co-relation 103559. Up to 53248 conditions per place. [2023-01-28 01:54:54,590 INFO L119 LiptonReduction]: Number of co-enabled transitions 216814 [2023-01-28 01:54:57,127 INFO L134 LiptonReduction]: Checked pairs total: 752280 [2023-01-28 01:54:57,127 INFO L136 LiptonReduction]: Total number of compositions: 285 [2023-01-28 01:54:57,128 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:54:57,129 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;@66909202, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:54:57,129 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:54:57,350 INFO L130 PetriNetUnfolder]: 715/2053 cut-off events. [2023-01-28 01:54:57,351 INFO L131 PetriNetUnfolder]: For 1282/1282 co-relation queries the response was YES. [2023-01-28 01:54:57,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:54:57,351 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 01:54:57,351 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:54:57,351 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:54:57,351 INFO L85 PathProgramCache]: Analyzing trace with hash -2001479185, now seen corresponding path program 1 times [2023-01-28 01:54:57,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:54:57,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118094428] [2023-01-28 01:54:57,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:54:57,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:54:57,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:54:57,367 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:54:57,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:54:57,381 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:54:57,382 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:54:57,382 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:54:57,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 01:54:57,382 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:54:57,382 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:54:57,382 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:54:57,382 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-01-28 01:54:57,407 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-01-28 01:54:57,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 459 places, 553 transitions, 1400 flow