/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_01-simple_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 01:29:06,214 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 01:29:06,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 01:29:06,235 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 01:29:06,235 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 01:29:06,236 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 01:29:06,240 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 01:29:06,242 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 01:29:06,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 01:29:06,247 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 01:29:06,248 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 01:29:06,249 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 01:29:06,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 01:29:06,252 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 01:29:06,253 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 01:29:06,253 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 01:29:06,254 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 01:29:06,255 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 01:29:06,257 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 01:29:06,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 01:29:06,261 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 01:29:06,262 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 01:29:06,263 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 01:29:06,264 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 01:29:06,269 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 01:29:06,270 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 01:29:06,270 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 01:29:06,271 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 01:29:06,271 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 01:29:06,272 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 01:29:06,272 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 01:29:06,272 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 01:29:06,273 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 01:29:06,274 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 01:29:06,274 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 01:29:06,275 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 01:29:06,275 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 01:29:06,275 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 01:29:06,275 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 01:29:06,276 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 01:29:06,276 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 01:29:06,277 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 01:29:06,302 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 01:29:06,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 01:29:06,303 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 01:29:06,303 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 01:29:06,304 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 01:29:06,304 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 01:29:06,304 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 01:29:06,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 01:29:06,304 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 01:29:06,304 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 01:29:06,305 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 01:29:06,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 01:29:06,305 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 01:29:06,305 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 01:29:06,305 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 01:29:06,305 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 01:29:06,305 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 01:29:06,305 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 01:29:06,305 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 01:29:06,306 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 01:29:06,306 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 01:29:06,306 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 01:29:06,306 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 01:29:06,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:29:06,306 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 01:29:06,306 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 01:29:06,306 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 01:29:06,306 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 01:29:06,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 01:29:06,306 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 01:29:06,307 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 01:29:06,307 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 01:29:06,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 01:29:06,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 01:29:06,499 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 01:29:06,500 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 01:29:06,500 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 01:29:06,501 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_racing.i [2023-01-28 01:29:07,448 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 01:29:07,630 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 01:29:07,630 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_racing.i [2023-01-28 01:29:07,638 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e131ec38/92b7581e742145c0ae05b04e9804b79b/FLAGc4ca04f31 [2023-01-28 01:29:07,651 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e131ec38/92b7581e742145c0ae05b04e9804b79b [2023-01-28 01:29:07,653 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 01:29:07,654 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 01:29:07,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 01:29:07,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 01:29:07,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 01:29:07,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:29:07" (1/1) ... [2023-01-28 01:29:07,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44ef3763 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:07, skipping insertion in model container [2023-01-28 01:29:07,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:29:07" (1/1) ... [2023-01-28 01:29:07,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 01:29:07,692 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 01:29:07,931 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_01-simple_racing.i[30176,30189] [2023-01-28 01:29:07,945 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:29:07,960 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 01:29:07,992 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_01-simple_racing.i[30176,30189] [2023-01-28 01:29:08,000 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:29:08,036 INFO L208 MainTranslator]: Completed translation [2023-01-28 01:29:08,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:08 WrapperNode [2023-01-28 01:29:08,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 01:29:08,038 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 01:29:08,038 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 01:29:08,038 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 01:29:08,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:08" (1/1) ... [2023-01-28 01:29:08,066 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:08" (1/1) ... [2023-01-28 01:29:08,087 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 79 [2023-01-28 01:29:08,088 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 01:29:08,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 01:29:08,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 01:29:08,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 01:29:08,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:08" (1/1) ... [2023-01-28 01:29:08,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:08" (1/1) ... [2023-01-28 01:29:08,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:08" (1/1) ... [2023-01-28 01:29:08,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:08" (1/1) ... [2023-01-28 01:29:08,112 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:08" (1/1) ... [2023-01-28 01:29:08,114 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:08" (1/1) ... [2023-01-28 01:29:08,115 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:08" (1/1) ... [2023-01-28 01:29:08,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:08" (1/1) ... [2023-01-28 01:29:08,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 01:29:08,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 01:29:08,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 01:29:08,118 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 01:29:08,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:08" (1/1) ... [2023-01-28 01:29:08,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:29:08,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 01:29:08,187 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 01:29:08,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 01:29:08,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 01:29:08,214 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 01:29:08,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 01:29:08,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 01:29:08,214 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-01-28 01:29:08,214 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-01-28 01:29:08,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 01:29:08,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 01:29:08,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 01:29:08,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 01:29:08,215 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 01:29:08,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 01:29:08,308 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 01:29:08,309 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 01:29:08,517 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 01:29:08,524 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 01:29:08,524 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-01-28 01:29:08,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:29:08 BoogieIcfgContainer [2023-01-28 01:29:08,526 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 01:29:08,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 01:29:08,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 01:29:08,529 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 01:29:08,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 01:29:07" (1/3) ... [2023-01-28 01:29:08,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19bdc2bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:29:08, skipping insertion in model container [2023-01-28 01:29:08,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:08" (2/3) ... [2023-01-28 01:29:08,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19bdc2bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:29:08, skipping insertion in model container [2023-01-28 01:29:08,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:29:08" (3/3) ... [2023-01-28 01:29:08,531 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_01-simple_racing.i [2023-01-28 01:29:08,542 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 01:29:08,543 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 01:29:08,543 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 01:29:08,613 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-01-28 01:29:08,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 106 transitions, 220 flow [2023-01-28 01:29:08,713 INFO L130 PetriNetUnfolder]: 17/139 cut-off events. [2023-01-28 01:29:08,713 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-28 01:29:08,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 139 events. 17/139 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 298 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 66. Up to 4 conditions per place. [2023-01-28 01:29:08,717 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 106 transitions, 220 flow [2023-01-28 01:29:08,721 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 101 transitions, 207 flow [2023-01-28 01:29:08,729 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:29:08,738 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 101 transitions, 207 flow [2023-01-28 01:29:08,741 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 101 transitions, 207 flow [2023-01-28 01:29:08,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 101 transitions, 207 flow [2023-01-28 01:29:08,775 INFO L130 PetriNetUnfolder]: 16/134 cut-off events. [2023-01-28 01:29:08,775 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:29:08,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 134 events. 16/134 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 288 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 66. Up to 4 conditions per place. [2023-01-28 01:29:08,778 INFO L119 LiptonReduction]: Number of co-enabled transitions 2184 [2023-01-28 01:29:10,892 INFO L134 LiptonReduction]: Checked pairs total: 3727 [2023-01-28 01:29:10,892 INFO L136 LiptonReduction]: Total number of compositions: 81 [2023-01-28 01:29:10,902 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:29:10,906 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;@4463749d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:29:10,906 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:29:10,909 INFO L130 PetriNetUnfolder]: 3/22 cut-off events. [2023-01-28 01:29:10,910 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:29:10,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:29:10,910 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-01-28 01:29:10,910 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:29:10,913 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:29:10,914 INFO L85 PathProgramCache]: Analyzing trace with hash -923603211, now seen corresponding path program 1 times [2023-01-28 01:29:10,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:29:10,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164171496] [2023-01-28 01:29:10,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:29:10,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:29:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:29:10,999 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:29:11,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:29:11,029 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:29:11,030 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:29:11,031 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:29:11,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 01:29:11,032 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:29:11,034 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:29:11,035 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:29:11,035 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-01-28 01:29:11,047 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 01:29:11,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 136 transitions, 290 flow [2023-01-28 01:29:11,070 INFO L130 PetriNetUnfolder]: 31/226 cut-off events. [2023-01-28 01:29:11,070 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-01-28 01:29:11,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 226 events. 31/226 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 596 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 141. Up to 8 conditions per place. [2023-01-28 01:29:11,071 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 136 transitions, 290 flow [2023-01-28 01:29:11,073 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 136 transitions, 290 flow [2023-01-28 01:29:11,073 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:29:11,073 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 122 places, 136 transitions, 290 flow [2023-01-28 01:29:11,073 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 122 places, 136 transitions, 290 flow [2023-01-28 01:29:11,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 136 transitions, 290 flow [2023-01-28 01:29:11,091 INFO L130 PetriNetUnfolder]: 31/226 cut-off events. [2023-01-28 01:29:11,091 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-01-28 01:29:11,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 226 events. 31/226 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 596 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 141. Up to 8 conditions per place. [2023-01-28 01:29:11,096 INFO L119 LiptonReduction]: Number of co-enabled transitions 6552 [2023-01-28 01:29:13,333 INFO L134 LiptonReduction]: Checked pairs total: 17341 [2023-01-28 01:29:13,333 INFO L136 LiptonReduction]: Total number of compositions: 95 [2023-01-28 01:29:13,335 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:29:13,336 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;@4463749d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:29:13,336 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:29:13,339 INFO L130 PetriNetUnfolder]: 12/57 cut-off events. [2023-01-28 01:29:13,339 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 01:29:13,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:29:13,339 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-01-28 01:29:13,340 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:29:13,340 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:29:13,340 INFO L85 PathProgramCache]: Analyzing trace with hash 358027829, now seen corresponding path program 1 times [2023-01-28 01:29:13,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:29:13,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555241794] [2023-01-28 01:29:13,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:29:13,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:29:13,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:29:13,398 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:29:13,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:29:13,431 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:29:13,432 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:29:13,432 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:29:13,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 01:29:13,432 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:29:13,432 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:29:13,433 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:29:13,433 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-01-28 01:29:13,456 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 01:29:13,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 166 transitions, 362 flow [2023-01-28 01:29:13,479 INFO L130 PetriNetUnfolder]: 50/344 cut-off events. [2023-01-28 01:29:13,479 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-01-28 01:29:13,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 372 conditions, 344 events. 50/344 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1037 event pairs, 1 based on Foata normal form. 0/286 useless extension candidates. Maximal degree in co-relation 234. Up to 16 conditions per place. [2023-01-28 01:29:13,482 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 166 transitions, 362 flow [2023-01-28 01:29:13,483 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 147 places, 166 transitions, 362 flow [2023-01-28 01:29:13,484 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:29:13,484 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 147 places, 166 transitions, 362 flow [2023-01-28 01:29:13,484 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 147 places, 166 transitions, 362 flow [2023-01-28 01:29:13,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 166 transitions, 362 flow [2023-01-28 01:29:13,527 INFO L130 PetriNetUnfolder]: 50/344 cut-off events. [2023-01-28 01:29:13,527 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-01-28 01:29:13,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 372 conditions, 344 events. 50/344 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1037 event pairs, 1 based on Foata normal form. 0/286 useless extension candidates. Maximal degree in co-relation 234. Up to 16 conditions per place. [2023-01-28 01:29:13,535 INFO L119 LiptonReduction]: Number of co-enabled transitions 12432 [2023-01-28 01:29:15,302 INFO L134 LiptonReduction]: Checked pairs total: 32834 [2023-01-28 01:29:15,302 INFO L136 LiptonReduction]: Total number of compositions: 113 [2023-01-28 01:29:15,303 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:29:15,304 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;@4463749d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:29:15,304 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:29:15,310 INFO L130 PetriNetUnfolder]: 21/92 cut-off events. [2023-01-28 01:29:15,311 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-01-28 01:29:15,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:29:15,311 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-01-28 01:29:15,311 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:29:15,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:29:15,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1122503872, now seen corresponding path program 1 times [2023-01-28 01:29:15,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:29:15,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821800226] [2023-01-28 01:29:15,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:29:15,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:29:15,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:29:15,339 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:29:15,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:29:15,368 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:29:15,377 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:29:15,378 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:29:15,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 01:29:15,379 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:29:15,382 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:29:15,382 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:29:15,382 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-01-28 01:29:15,405 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-28 01:29:15,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 172 places, 196 transitions, 436 flow [2023-01-28 01:29:15,456 INFO L130 PetriNetUnfolder]: 81/526 cut-off events. [2023-01-28 01:29:15,457 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-01-28 01:29:15,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 581 conditions, 526 events. 81/526 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1911 event pairs, 6 based on Foata normal form. 0/440 useless extension candidates. Maximal degree in co-relation 364. Up to 32 conditions per place. [2023-01-28 01:29:15,461 INFO L82 GeneralOperation]: Start removeDead. Operand has 172 places, 196 transitions, 436 flow [2023-01-28 01:29:15,464 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 172 places, 196 transitions, 436 flow [2023-01-28 01:29:15,464 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:29:15,464 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 172 places, 196 transitions, 436 flow [2023-01-28 01:29:15,464 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 172 places, 196 transitions, 436 flow [2023-01-28 01:29:15,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 172 places, 196 transitions, 436 flow [2023-01-28 01:29:15,530 INFO L130 PetriNetUnfolder]: 81/526 cut-off events. [2023-01-28 01:29:15,530 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-01-28 01:29:15,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 581 conditions, 526 events. 81/526 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1911 event pairs, 6 based on Foata normal form. 0/440 useless extension candidates. Maximal degree in co-relation 364. Up to 32 conditions per place. [2023-01-28 01:29:15,547 INFO L119 LiptonReduction]: Number of co-enabled transitions 20048 [2023-01-28 01:29:17,730 INFO L134 LiptonReduction]: Checked pairs total: 56129 [2023-01-28 01:29:17,730 INFO L136 LiptonReduction]: Total number of compositions: 125 [2023-01-28 01:29:17,733 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:29:17,734 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;@4463749d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:29:17,734 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:29:17,791 INFO L130 PetriNetUnfolder]: 33/136 cut-off events. [2023-01-28 01:29:17,791 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-01-28 01:29:17,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:29:17,792 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-01-28 01:29:17,792 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:29:17,793 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:29:17,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1464503797, now seen corresponding path program 1 times [2023-01-28 01:29:17,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:29:17,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271738027] [2023-01-28 01:29:17,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:29:17,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:29:17,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:29:17,823 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:29:17,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:29:17,860 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:29:17,860 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:29:17,861 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:29:17,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 01:29:17,861 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:29:17,861 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:29:17,861 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:29:17,861 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-01-28 01:29:17,883 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-01-28 01:29:17,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 226 transitions, 512 flow [2023-01-28 01:29:17,979 INFO L130 PetriNetUnfolder]: 140/840 cut-off events. [2023-01-28 01:29:17,979 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-01-28 01:29:17,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 951 conditions, 840 events. 140/840 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3585 event pairs, 23 based on Foata normal form. 0/710 useless extension candidates. Maximal degree in co-relation 571. Up to 80 conditions per place. [2023-01-28 01:29:17,987 INFO L82 GeneralOperation]: Start removeDead. Operand has 197 places, 226 transitions, 512 flow [2023-01-28 01:29:17,993 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 197 places, 226 transitions, 512 flow [2023-01-28 01:29:17,993 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:29:17,993 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 197 places, 226 transitions, 512 flow [2023-01-28 01:29:17,993 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 197 places, 226 transitions, 512 flow [2023-01-28 01:29:17,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 226 transitions, 512 flow [2023-01-28 01:29:18,070 INFO L130 PetriNetUnfolder]: 140/840 cut-off events. [2023-01-28 01:29:18,070 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-01-28 01:29:18,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 951 conditions, 840 events. 140/840 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3585 event pairs, 23 based on Foata normal form. 0/710 useless extension candidates. Maximal degree in co-relation 571. Up to 80 conditions per place. [2023-01-28 01:29:18,093 INFO L119 LiptonReduction]: Number of co-enabled transitions 29400 [2023-01-28 01:29:20,167 INFO L134 LiptonReduction]: Checked pairs total: 83915 [2023-01-28 01:29:20,167 INFO L136 LiptonReduction]: Total number of compositions: 143 [2023-01-28 01:29:20,168 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:29:20,169 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;@4463749d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:29:20,169 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:29:20,182 INFO L130 PetriNetUnfolder]: 43/179 cut-off events. [2023-01-28 01:29:20,182 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-01-28 01:29:20,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:29:20,182 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:29:20,182 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:29:20,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:29:20,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1210261088, now seen corresponding path program 1 times [2023-01-28 01:29:20,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:29:20,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020916789] [2023-01-28 01:29:20,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:29:20,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:29:20,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:29:20,219 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:29:20,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:29:20,240 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:29:20,241 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:29:20,241 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:29:20,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 01:29:20,241 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:29:20,241 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:29:20,241 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:29:20,242 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-01-28 01:29:20,260 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-01-28 01:29:20,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 222 places, 256 transitions, 590 flow [2023-01-28 01:29:20,401 INFO L130 PetriNetUnfolder]: 263/1426 cut-off events. [2023-01-28 01:29:20,401 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-01-28 01:29:20,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1658 conditions, 1426 events. 263/1426 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 7628 event pairs, 72 based on Foata normal form. 0/1220 useless extension candidates. Maximal degree in co-relation 939. Up to 192 conditions per place. [2023-01-28 01:29:20,420 INFO L82 GeneralOperation]: Start removeDead. Operand has 222 places, 256 transitions, 590 flow [2023-01-28 01:29:20,432 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 222 places, 256 transitions, 590 flow [2023-01-28 01:29:20,432 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:29:20,432 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 222 places, 256 transitions, 590 flow [2023-01-28 01:29:20,433 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 222 places, 256 transitions, 590 flow [2023-01-28 01:29:20,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 222 places, 256 transitions, 590 flow [2023-01-28 01:29:20,562 INFO L130 PetriNetUnfolder]: 263/1426 cut-off events. [2023-01-28 01:29:20,565 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-01-28 01:29:20,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1658 conditions, 1426 events. 263/1426 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 7628 event pairs, 72 based on Foata normal form. 0/1220 useless extension candidates. Maximal degree in co-relation 939. Up to 192 conditions per place. [2023-01-28 01:29:20,621 INFO L119 LiptonReduction]: Number of co-enabled transitions 40488 [2023-01-28 01:29:22,856 INFO L134 LiptonReduction]: Checked pairs total: 116062 [2023-01-28 01:29:22,857 INFO L136 LiptonReduction]: Total number of compositions: 158 [2023-01-28 01:29:22,858 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:29:22,858 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;@4463749d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:29:22,858 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:29:22,871 INFO L130 PetriNetUnfolder]: 58/234 cut-off events. [2023-01-28 01:29:22,871 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-01-28 01:29:22,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:29:22,871 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:29:22,871 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:29:22,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:29:22,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1894809051, now seen corresponding path program 1 times [2023-01-28 01:29:22,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:29:22,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530955720] [2023-01-28 01:29:22,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:29:22,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:29:22,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:29:22,887 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:29:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:29:22,899 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:29:22,899 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:29:22,899 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:29:22,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 01:29:22,899 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:29:22,900 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:29:22,900 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:29:22,900 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-01-28 01:29:22,916 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-01-28 01:29:22,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 247 places, 286 transitions, 670 flow [2023-01-28 01:29:23,247 INFO L130 PetriNetUnfolder]: 530/2572 cut-off events. [2023-01-28 01:29:23,247 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-01-28 01:29:23,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3070 conditions, 2572 events. 530/2572 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 16778 event pairs, 201 based on Foata normal form. 0/2226 useless extension candidates. Maximal degree in co-relation 1644. Up to 448 conditions per place. [2023-01-28 01:29:23,285 INFO L82 GeneralOperation]: Start removeDead. Operand has 247 places, 286 transitions, 670 flow [2023-01-28 01:29:23,301 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 247 places, 286 transitions, 670 flow [2023-01-28 01:29:23,302 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:29:23,302 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 247 places, 286 transitions, 670 flow [2023-01-28 01:29:23,302 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 247 places, 286 transitions, 670 flow [2023-01-28 01:29:23,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 247 places, 286 transitions, 670 flow [2023-01-28 01:29:23,645 INFO L130 PetriNetUnfolder]: 530/2572 cut-off events. [2023-01-28 01:29:23,646 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-01-28 01:29:23,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3070 conditions, 2572 events. 530/2572 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 16778 event pairs, 201 based on Foata normal form. 0/2226 useless extension candidates. Maximal degree in co-relation 1644. Up to 448 conditions per place. [2023-01-28 01:29:23,716 INFO L119 LiptonReduction]: Number of co-enabled transitions 53312 [2023-01-28 01:29:25,756 INFO L134 LiptonReduction]: Checked pairs total: 155430 [2023-01-28 01:29:25,757 INFO L136 LiptonReduction]: Total number of compositions: 170 [2023-01-28 01:29:25,758 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:29:25,760 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;@4463749d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:29:25,760 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:29:25,784 INFO L130 PetriNetUnfolder]: 83/324 cut-off events. [2023-01-28 01:29:25,784 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-01-28 01:29:25,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:29:25,784 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:29:25,785 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:29:25,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:29:25,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1073729781, now seen corresponding path program 1 times [2023-01-28 01:29:25,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:29:25,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529927929] [2023-01-28 01:29:25,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:29:25,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:29:25,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:29:25,814 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:29:25,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:29:25,837 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:29:25,837 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:29:25,837 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:29:25,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 01:29:25,837 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:29:25,838 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:29:25,838 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:29:25,838 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-01-28 01:29:25,858 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-01-28 01:29:25,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 272 places, 316 transitions, 752 flow [2023-01-28 01:29:26,621 INFO L130 PetriNetUnfolder]: 1117/4870 cut-off events. [2023-01-28 01:29:26,621 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-01-28 01:29:26,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5955 conditions, 4870 events. 1117/4870 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 38527 event pairs, 522 based on Foata normal form. 0/4256 useless extension candidates. Maximal degree in co-relation 3054. Up to 1024 conditions per place. [2023-01-28 01:29:26,676 INFO L82 GeneralOperation]: Start removeDead. Operand has 272 places, 316 transitions, 752 flow [2023-01-28 01:29:26,703 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 272 places, 316 transitions, 752 flow [2023-01-28 01:29:26,703 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:29:26,704 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 272 places, 316 transitions, 752 flow [2023-01-28 01:29:26,704 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 272 places, 316 transitions, 752 flow [2023-01-28 01:29:26,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 272 places, 316 transitions, 752 flow [2023-01-28 01:29:27,333 INFO L130 PetriNetUnfolder]: 1117/4870 cut-off events. [2023-01-28 01:29:27,333 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-01-28 01:29:27,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5955 conditions, 4870 events. 1117/4870 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 38527 event pairs, 522 based on Foata normal form. 0/4256 useless extension candidates. Maximal degree in co-relation 3054. Up to 1024 conditions per place. [2023-01-28 01:29:27,575 INFO L119 LiptonReduction]: Number of co-enabled transitions 67872 [2023-01-28 01:29:29,998 INFO L134 LiptonReduction]: Checked pairs total: 224972 [2023-01-28 01:29:29,998 INFO L136 LiptonReduction]: Total number of compositions: 188 [2023-01-28 01:29:30,000 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:29:30,001 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;@4463749d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:29:30,001 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:29:30,028 INFO L130 PetriNetUnfolder]: 107/410 cut-off events. [2023-01-28 01:29:30,028 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-01-28 01:29:30,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:29:30,028 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:29:30,028 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:29:30,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:29:30,029 INFO L85 PathProgramCache]: Analyzing trace with hash 661566965, now seen corresponding path program 1 times [2023-01-28 01:29:30,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:29:30,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883454117] [2023-01-28 01:29:30,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:29:30,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:29:30,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:29:30,056 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:29:30,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:29:30,075 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:29:30,075 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:29:30,075 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:29:30,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 01:29:30,076 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:29:30,076 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:29:30,076 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:29:30,076 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-01-28 01:29:30,099 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-01-28 01:29:30,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 297 places, 346 transitions, 836 flow [2023-01-28 01:29:31,719 INFO L130 PetriNetUnfolder]: 2408/9536 cut-off events. [2023-01-28 01:29:31,719 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-01-28 01:29:31,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11913 conditions, 9536 events. 2408/9536 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 86182 event pairs, 1291 based on Foata normal form. 0/8398 useless extension candidates. Maximal degree in co-relation 5937. Up to 2304 conditions per place. [2023-01-28 01:29:31,836 INFO L82 GeneralOperation]: Start removeDead. Operand has 297 places, 346 transitions, 836 flow [2023-01-28 01:29:31,899 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 297 places, 346 transitions, 836 flow [2023-01-28 01:29:31,899 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:29:31,900 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 297 places, 346 transitions, 836 flow [2023-01-28 01:29:31,900 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 297 places, 346 transitions, 836 flow [2023-01-28 01:29:31,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 297 places, 346 transitions, 836 flow [2023-01-28 01:29:33,444 INFO L130 PetriNetUnfolder]: 2408/9536 cut-off events. [2023-01-28 01:29:33,445 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-01-28 01:29:33,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11913 conditions, 9536 events. 2408/9536 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 86182 event pairs, 1291 based on Foata normal form. 0/8398 useless extension candidates. Maximal degree in co-relation 5937. Up to 2304 conditions per place. [2023-01-28 01:29:33,892 INFO L119 LiptonReduction]: Number of co-enabled transitions 84168 [2023-01-28 01:29:36,357 INFO L134 LiptonReduction]: Checked pairs total: 251928 [2023-01-28 01:29:36,357 INFO L136 LiptonReduction]: Total number of compositions: 200 [2023-01-28 01:29:36,378 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:29:36,380 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;@4463749d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:29:36,381 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:29:36,444 INFO L130 PetriNetUnfolder]: 159/566 cut-off events. [2023-01-28 01:29:36,444 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-01-28 01:29:36,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:29:36,445 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:29:36,445 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:29:36,445 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:29:36,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1173330805, now seen corresponding path program 1 times [2023-01-28 01:29:36,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:29:36,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776333750] [2023-01-28 01:29:36,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:29:36,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:29:36,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:29:36,460 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:29:36,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:29:36,474 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:29:36,474 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:29:36,474 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:29:36,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 01:29:36,474 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:29:36,474 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:29:36,475 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:29:36,475 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-01-28 01:29:36,498 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-01-28 01:29:36,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 322 places, 376 transitions, 922 flow [2023-01-28 01:29:39,877 INFO L130 PetriNetUnfolder]: 5235/19066 cut-off events. [2023-01-28 01:29:39,877 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-01-28 01:29:40,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24272 conditions, 19066 events. 5235/19066 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 195611 event pairs, 3084 based on Foata normal form. 0/16892 useless extension candidates. Maximal degree in co-relation 11893. Up to 5120 conditions per place. [2023-01-28 01:29:40,187 INFO L82 GeneralOperation]: Start removeDead. Operand has 322 places, 376 transitions, 922 flow [2023-01-28 01:29:40,523 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 322 places, 376 transitions, 922 flow [2023-01-28 01:29:40,523 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:29:40,524 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 322 places, 376 transitions, 922 flow [2023-01-28 01:29:40,524 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 322 places, 376 transitions, 922 flow [2023-01-28 01:29:40,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 322 places, 376 transitions, 922 flow [2023-01-28 01:29:44,062 INFO L130 PetriNetUnfolder]: 5235/19066 cut-off events. [2023-01-28 01:29:44,062 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-01-28 01:29:44,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24272 conditions, 19066 events. 5235/19066 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 195611 event pairs, 3084 based on Foata normal form. 0/16892 useless extension candidates. Maximal degree in co-relation 11893. Up to 5120 conditions per place. [2023-01-28 01:29:44,939 INFO L119 LiptonReduction]: Number of co-enabled transitions 102200 [2023-01-28 01:29:47,972 INFO L134 LiptonReduction]: Checked pairs total: 348428 [2023-01-28 01:29:47,973 INFO L136 LiptonReduction]: Total number of compositions: 215 [2023-01-28 01:29:47,974 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:29:47,974 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;@4463749d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:29:47,974 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:29:48,032 INFO L130 PetriNetUnfolder]: 234/799 cut-off events. [2023-01-28 01:29:48,032 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-01-28 01:29:48,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:29:48,032 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:29:48,032 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:29:48,032 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:29:48,033 INFO L85 PathProgramCache]: Analyzing trace with hash 2138108507, now seen corresponding path program 1 times [2023-01-28 01:29:48,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:29:48,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145953245] [2023-01-28 01:29:48,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:29:48,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:29:48,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:29:48,046 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:29:48,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:29:48,059 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:29:48,059 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:29:48,060 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:29:48,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 01:29:48,060 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:29:48,060 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:29:48,060 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:29:48,060 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-01-28 01:29:48,081 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-01-28 01:29:48,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 347 places, 406 transitions, 1010 flow [2023-01-28 01:29:56,179 INFO L130 PetriNetUnfolder]: 11390/38580 cut-off events. [2023-01-28 01:29:56,179 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-01-28 01:29:56,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49944 conditions, 38580 events. 11390/38580 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 443827 event pairs, 7181 based on Foata normal form. 0/34346 useless extension candidates. Maximal degree in co-relation 24250. Up to 11264 conditions per place. [2023-01-28 01:29:56,875 INFO L82 GeneralOperation]: Start removeDead. Operand has 347 places, 406 transitions, 1010 flow [2023-01-28 01:29:57,246 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 347 places, 406 transitions, 1010 flow [2023-01-28 01:29:57,246 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:29:57,246 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 347 places, 406 transitions, 1010 flow [2023-01-28 01:29:57,247 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 347 places, 406 transitions, 1010 flow [2023-01-28 01:29:57,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 347 places, 406 transitions, 1010 flow [2023-01-28 01:30:05,270 INFO L130 PetriNetUnfolder]: 11390/38580 cut-off events. [2023-01-28 01:30:05,271 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-01-28 01:30:06,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49944 conditions, 38580 events. 11390/38580 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 443827 event pairs, 7181 based on Foata normal form. 0/34346 useless extension candidates. Maximal degree in co-relation 24250. Up to 11264 conditions per place. [2023-01-28 01:30:07,806 INFO L119 LiptonReduction]: Number of co-enabled transitions 121968 [2023-01-28 01:30:10,228 INFO L134 LiptonReduction]: Checked pairs total: 373212 [2023-01-28 01:30:10,229 INFO L136 LiptonReduction]: Total number of compositions: 230 [2023-01-28 01:30:10,230 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:30:10,231 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;@4463749d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:30:10,231 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:30:10,317 INFO L130 PetriNetUnfolder]: 360/1114 cut-off events. [2023-01-28 01:30:10,318 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-01-28 01:30:10,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:30:10,318 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:30:10,318 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:30:10,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:30:10,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1088273120, now seen corresponding path program 1 times [2023-01-28 01:30:10,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:30:10,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899028931] [2023-01-28 01:30:10,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:30:10,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:30:10,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:30:10,335 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:30:10,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:30:10,348 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:30:10,349 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:30:10,349 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:30:10,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 01:30:10,349 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:30:10,349 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:30:10,349 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:30:10,349 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-01-28 01:30:10,373 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-01-28 01:30:10,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 372 places, 436 transitions, 1100 flow [2023-01-28 01:30:28,030 INFO L130 PetriNetUnfolder]: 24713/78574 cut-off events. [2023-01-28 01:30:28,030 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-01-28 01:30:31,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103265 conditions, 78574 events. 24713/78574 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1397. Compared 974954 event pairs, 16398 based on Foata normal form. 0/70232 useless extension candidates. Maximal degree in co-relation 49920. Up to 24576 conditions per place. [2023-01-28 01:30:31,513 INFO L82 GeneralOperation]: Start removeDead. Operand has 372 places, 436 transitions, 1100 flow [2023-01-28 01:30:32,526 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 372 places, 436 transitions, 1100 flow [2023-01-28 01:30:32,527 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:30:32,527 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 372 places, 436 transitions, 1100 flow [2023-01-28 01:30:32,527 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 372 places, 436 transitions, 1100 flow [2023-01-28 01:30:32,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 372 places, 436 transitions, 1100 flow [2023-01-28 01:30:50,150 INFO L130 PetriNetUnfolder]: 24713/78574 cut-off events. [2023-01-28 01:30:50,150 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-01-28 01:30:53,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103265 conditions, 78574 events. 24713/78574 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1397. Compared 974954 event pairs, 16398 based on Foata normal form. 0/70232 useless extension candidates. Maximal degree in co-relation 49920. Up to 24576 conditions per place. [2023-01-28 01:30:58,567 INFO L119 LiptonReduction]: Number of co-enabled transitions 143472 [2023-01-28 01:31:01,510 INFO L134 LiptonReduction]: Checked pairs total: 495099 [2023-01-28 01:31:01,510 INFO L136 LiptonReduction]: Total number of compositions: 245 [2023-01-28 01:31:01,511 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:31:01,512 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;@4463749d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:31:01,512 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:31:01,644 INFO L130 PetriNetUnfolder]: 572/1652 cut-off events. [2023-01-28 01:31:01,644 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-01-28 01:31:01,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:31:01,644 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 01:31:01,645 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:31:01,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:31:01,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1050289239, now seen corresponding path program 1 times [2023-01-28 01:31:01,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:31:01,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740102270] [2023-01-28 01:31:01,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:31:01,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:31:01,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:31:01,660 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:31:01,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:31:01,675 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:31:01,675 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:31:01,675 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:31:01,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 01:31:01,675 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:31:01,676 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:31:01,676 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:31:01,676 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-01-28 01:31:01,698 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-01-28 01:31:01,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 397 places, 466 transitions, 1192 flow [2023-01-28 01:31:41,034 INFO L130 PetriNetUnfolder]: 53396/160552 cut-off events. [2023-01-28 01:31:41,034 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-01-28 01:31:49,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213931 conditions, 160552 events. 53396/160552 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2777. Compared 2176341 event pairs, 36879 based on Foata normal form. 0/144006 useless extension candidates. Maximal degree in co-relation 103239. Up to 53248 conditions per place. [2023-01-28 01:31:49,700 INFO L82 GeneralOperation]: Start removeDead. Operand has 397 places, 466 transitions, 1192 flow [2023-01-28 01:31:53,318 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 397 places, 466 transitions, 1192 flow [2023-01-28 01:31:53,319 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:31:53,319 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 397 places, 466 transitions, 1192 flow [2023-01-28 01:31:53,319 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 397 places, 466 transitions, 1192 flow [2023-01-28 01:31:53,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 397 places, 466 transitions, 1192 flow [2023-01-28 01:32:33,214 INFO L130 PetriNetUnfolder]: 53396/160552 cut-off events. [2023-01-28 01:32:33,215 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-01-28 01:32:42,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213931 conditions, 160552 events. 53396/160552 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2777. Compared 2176341 event pairs, 36879 based on Foata normal form. 0/144006 useless extension candidates. Maximal degree in co-relation 103239. Up to 53248 conditions per place. [2023-01-28 01:32:58,302 INFO L119 LiptonReduction]: Number of co-enabled transitions 166712 [2023-01-28 01:33:00,926 INFO L134 LiptonReduction]: Checked pairs total: 575953 [2023-01-28 01:33:00,926 INFO L136 LiptonReduction]: Total number of compositions: 260 [2023-01-28 01:33:00,931 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:33:00,933 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;@4463749d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:33:00,933 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:33:01,155 INFO L130 PetriNetUnfolder]: 928/2481 cut-off events. [2023-01-28 01:33:01,155 INFO L131 PetriNetUnfolder]: For 1672/1672 co-relation queries the response was YES. [2023-01-28 01:33:01,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:33:01,155 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 01:33:01,156 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:33:01,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:33:01,156 INFO L85 PathProgramCache]: Analyzing trace with hash 728207007, now seen corresponding path program 1 times [2023-01-28 01:33:01,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:33:01,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974658944] [2023-01-28 01:33:01,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:33:01,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:33:01,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:33:01,177 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:33:01,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:33:01,193 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:33:01,193 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:33:01,194 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:33:01,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 01:33:01,194 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:33:01,194 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:33:01,194 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:33:01,194 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-01-28 01:33:01,216 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-01-28 01:33:01,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 422 places, 496 transitions, 1286 flow