/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_28-funptr_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 01:44:34,239 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 01:44:34,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 01:44:34,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 01:44:34,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 01:44:34,282 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 01:44:34,284 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 01:44:34,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 01:44:34,285 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 01:44:34,286 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 01:44:34,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 01:44:34,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 01:44:34,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 01:44:34,288 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 01:44:34,288 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 01:44:34,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 01:44:34,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 01:44:34,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 01:44:34,291 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 01:44:34,292 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 01:44:34,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 01:44:34,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 01:44:34,302 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 01:44:34,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 01:44:34,311 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 01:44:34,311 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 01:44:34,311 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 01:44:34,312 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 01:44:34,312 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 01:44:34,313 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 01:44:34,313 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 01:44:34,314 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 01:44:34,315 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 01:44:34,315 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 01:44:34,316 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 01:44:34,316 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 01:44:34,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 01:44:34,316 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 01:44:34,316 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 01:44:34,317 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 01:44:34,317 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 01:44:34,319 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 01:44:34,341 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 01:44:34,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 01:44:34,342 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 01:44:34,342 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 01:44:34,342 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 01:44:34,342 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 01:44:34,342 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 01:44:34,343 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 01:44:34,343 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 01:44:34,343 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 01:44:34,343 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 01:44:34,343 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 01:44:34,344 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 01:44:34,344 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 01:44:34,344 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 01:44:34,344 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 01:44:34,344 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 01:44:34,344 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 01:44:34,344 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 01:44:34,344 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 01:44:34,344 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 01:44:34,344 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 01:44:34,344 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 01:44:34,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:44:34,345 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 01:44:34,345 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 01:44:34,345 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 01:44:34,345 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 01:44:34,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 01:44:34,345 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 01:44:34,345 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 01:44:34,345 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 01:44:34,501 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 01:44:34,513 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 01:44:34,515 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 01:44:34,515 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 01:44:34,516 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 01:44:34,516 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_28-funptr_racefree.i [2023-01-28 01:44:35,586 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 01:44:35,872 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 01:44:35,873 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_28-funptr_racefree.i [2023-01-28 01:44:35,891 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0f20c800/0c8bcc45b4f643b6b50fb1e519b13f4e/FLAGa248b884d [2023-01-28 01:44:35,905 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0f20c800/0c8bcc45b4f643b6b50fb1e519b13f4e [2023-01-28 01:44:35,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 01:44:35,908 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 01:44:35,910 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 01:44:35,910 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 01:44:35,912 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 01:44:35,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:44:35" (1/1) ... [2023-01-28 01:44:35,913 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fc237d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:44:35, skipping insertion in model container [2023-01-28 01:44:35,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:44:35" (1/1) ... [2023-01-28 01:44:35,918 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 01:44:35,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 01:44:36,269 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_28-funptr_racefree.i[41323,41336] [2023-01-28 01:44:36,285 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:44:36,320 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 01:44:36,351 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_28-funptr_racefree.i[41323,41336] [2023-01-28 01:44:36,371 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:44:36,408 WARN L667 CHandler]: The function g is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 01:44:36,413 INFO L208 MainTranslator]: Completed translation [2023-01-28 01:44:36,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:44:36 WrapperNode [2023-01-28 01:44:36,414 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 01:44:36,415 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 01:44:36,415 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 01:44:36,415 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 01:44:36,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:44:36" (1/1) ... [2023-01-28 01:44:36,445 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:44:36" (1/1) ... [2023-01-28 01:44:36,479 INFO L138 Inliner]: procedures = 273, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 122 [2023-01-28 01:44:36,479 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 01:44:36,480 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 01:44:36,480 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 01:44:36,480 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 01:44:36,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:44:36" (1/1) ... [2023-01-28 01:44:36,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:44:36" (1/1) ... [2023-01-28 01:44:36,508 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:44:36" (1/1) ... [2023-01-28 01:44:36,508 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:44:36" (1/1) ... [2023-01-28 01:44:36,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:44:36" (1/1) ... [2023-01-28 01:44:36,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:44:36" (1/1) ... [2023-01-28 01:44:36,515 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:44:36" (1/1) ... [2023-01-28 01:44:36,516 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:44:36" (1/1) ... [2023-01-28 01:44:36,538 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 01:44:36,539 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 01:44:36,539 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 01:44:36,539 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 01:44:36,540 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:44:36" (1/1) ... [2023-01-28 01:44:36,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:44:36,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 01:44:36,571 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 01:44:36,573 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 01:44:36,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 01:44:36,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 01:44:36,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 01:44:36,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 01:44:36,629 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 01:44:36,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 01:44:36,630 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-01-28 01:44:36,630 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-01-28 01:44:36,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 01:44:36,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 01:44:36,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 01:44:36,632 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 01:44:36,718 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 01:44:36,719 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 01:44:36,890 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 01:44:36,895 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 01:44:36,895 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-01-28 01:44:36,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:44:36 BoogieIcfgContainer [2023-01-28 01:44:36,897 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 01:44:36,898 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 01:44:36,898 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 01:44:36,900 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 01:44:36,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 01:44:35" (1/3) ... [2023-01-28 01:44:36,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@656374bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:44:36, skipping insertion in model container [2023-01-28 01:44:36,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:44:36" (2/3) ... [2023-01-28 01:44:36,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@656374bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:44:36, skipping insertion in model container [2023-01-28 01:44:36,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:44:36" (3/3) ... [2023-01-28 01:44:36,902 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_28-funptr_racefree.i [2023-01-28 01:44:36,915 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 01:44:36,915 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 01:44:36,915 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 01:44:36,958 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-01-28 01:44:36,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 119 transitions, 246 flow [2023-01-28 01:44:37,022 INFO L130 PetriNetUnfolder]: 17/156 cut-off events. [2023-01-28 01:44:37,023 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-28 01:44:37,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 156 events. 17/156 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 352 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 78. Up to 4 conditions per place. [2023-01-28 01:44:37,028 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 119 transitions, 246 flow [2023-01-28 01:44:37,031 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 114 transitions, 233 flow [2023-01-28 01:44:37,033 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:44:37,039 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 106 places, 114 transitions, 233 flow [2023-01-28 01:44:37,040 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 106 places, 114 transitions, 233 flow [2023-01-28 01:44:37,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 114 transitions, 233 flow [2023-01-28 01:44:37,063 INFO L130 PetriNetUnfolder]: 16/151 cut-off events. [2023-01-28 01:44:37,064 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:44:37,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 151 events. 16/151 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 339 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 78. Up to 4 conditions per place. [2023-01-28 01:44:37,066 INFO L119 LiptonReduction]: Number of co-enabled transitions 3096 [2023-01-28 01:44:39,134 INFO L134 LiptonReduction]: Checked pairs total: 6627 [2023-01-28 01:44:39,135 INFO L136 LiptonReduction]: Total number of compositions: 91 [2023-01-28 01:44:39,158 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:44:39,163 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@481c65cf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:44:39,163 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:44:39,169 INFO L130 PetriNetUnfolder]: 0/12 cut-off events. [2023-01-28 01:44:39,169 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:44:39,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:44:39,170 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-01-28 01:44:39,170 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:44:39,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:44:39,175 INFO L85 PathProgramCache]: Analyzing trace with hash 432317202, now seen corresponding path program 1 times [2023-01-28 01:44:39,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:44:39,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651444229] [2023-01-28 01:44:39,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:44:39,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:44:39,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:44:39,307 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:44:39,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:44:39,360 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:44:39,361 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:44:39,362 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:44:39,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 01:44:39,363 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:44:39,369 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:44:39,370 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:44:39,370 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-01-28 01:44:39,405 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 01:44:39,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 157 transitions, 332 flow [2023-01-28 01:44:39,469 INFO L130 PetriNetUnfolder]: 31/255 cut-off events. [2023-01-28 01:44:39,469 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-01-28 01:44:39,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 255 events. 31/255 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 755 event pairs, 0 based on Foata normal form. 0/217 useless extension candidates. Maximal degree in co-relation 158. Up to 8 conditions per place. [2023-01-28 01:44:39,473 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 157 transitions, 332 flow [2023-01-28 01:44:39,475 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 157 transitions, 332 flow [2023-01-28 01:44:39,475 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:44:39,475 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 143 places, 157 transitions, 332 flow [2023-01-28 01:44:39,476 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 143 places, 157 transitions, 332 flow [2023-01-28 01:44:39,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 157 transitions, 332 flow [2023-01-28 01:44:39,507 INFO L130 PetriNetUnfolder]: 31/255 cut-off events. [2023-01-28 01:44:39,507 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-01-28 01:44:39,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 255 events. 31/255 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 755 event pairs, 0 based on Foata normal form. 0/217 useless extension candidates. Maximal degree in co-relation 158. Up to 8 conditions per place. [2023-01-28 01:44:39,513 INFO L119 LiptonReduction]: Number of co-enabled transitions 9576 [2023-01-28 01:44:41,790 INFO L134 LiptonReduction]: Checked pairs total: 23792 [2023-01-28 01:44:41,790 INFO L136 LiptonReduction]: Total number of compositions: 111 [2023-01-28 01:44:41,791 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:44:41,792 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;@481c65cf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:44:41,792 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:44:41,795 INFO L130 PetriNetUnfolder]: 6/50 cut-off events. [2023-01-28 01:44:41,795 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 01:44:41,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:44:41,796 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-01-28 01:44:41,796 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:44:41,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:44:41,796 INFO L85 PathProgramCache]: Analyzing trace with hash -2038109542, now seen corresponding path program 1 times [2023-01-28 01:44:41,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:44:41,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110047849] [2023-01-28 01:44:41,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:44:41,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:44:41,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:44:41,819 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:44:41,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:44:41,840 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:44:41,840 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:44:41,841 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:44:41,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 01:44:41,841 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:44:41,841 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:44:41,841 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:44:41,841 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-01-28 01:44:41,863 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 01:44:41,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 195 transitions, 420 flow [2023-01-28 01:44:41,902 INFO L130 PetriNetUnfolder]: 50/385 cut-off events. [2023-01-28 01:44:41,902 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-01-28 01:44:41,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 413 conditions, 385 events. 50/385 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1323 event pairs, 1 based on Foata normal form. 0/327 useless extension candidates. Maximal degree in co-relation 263. Up to 16 conditions per place. [2023-01-28 01:44:41,904 INFO L82 GeneralOperation]: Start removeDead. Operand has 176 places, 195 transitions, 420 flow [2023-01-28 01:44:41,906 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 176 places, 195 transitions, 420 flow [2023-01-28 01:44:41,907 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:44:41,907 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 176 places, 195 transitions, 420 flow [2023-01-28 01:44:41,909 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 176 places, 195 transitions, 420 flow [2023-01-28 01:44:41,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 195 transitions, 420 flow [2023-01-28 01:44:41,940 INFO L130 PetriNetUnfolder]: 50/385 cut-off events. [2023-01-28 01:44:41,941 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-01-28 01:44:41,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 413 conditions, 385 events. 50/385 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1323 event pairs, 1 based on Foata normal form. 0/327 useless extension candidates. Maximal degree in co-relation 263. Up to 16 conditions per place. [2023-01-28 01:44:41,951 INFO L119 LiptonReduction]: Number of co-enabled transitions 18576 [2023-01-28 01:44:44,294 INFO L134 LiptonReduction]: Checked pairs total: 54923 [2023-01-28 01:44:44,295 INFO L136 LiptonReduction]: Total number of compositions: 132 [2023-01-28 01:44:44,296 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:44:44,297 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;@481c65cf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:44:44,297 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:44:44,306 INFO L130 PetriNetUnfolder]: 12/84 cut-off events. [2023-01-28 01:44:44,307 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-01-28 01:44:44,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:44:44,307 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-01-28 01:44:44,310 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:44:44,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:44:44,311 INFO L85 PathProgramCache]: Analyzing trace with hash -732255667, now seen corresponding path program 1 times [2023-01-28 01:44:44,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:44:44,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143251934] [2023-01-28 01:44:44,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:44:44,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:44:44,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:44:44,378 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:44:44,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:44:44,420 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:44:44,420 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:44:44,421 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:44:44,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 01:44:44,426 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:44:44,427 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:44:44,427 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:44:44,427 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-01-28 01:44:44,465 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-28 01:44:44,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 233 transitions, 510 flow [2023-01-28 01:44:44,559 INFO L130 PetriNetUnfolder]: 81/579 cut-off events. [2023-01-28 01:44:44,559 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-01-28 01:44:44,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 634 conditions, 579 events. 81/579 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2270 event pairs, 6 based on Foata normal form. 0/493 useless extension candidates. Maximal degree in co-relation 405. Up to 32 conditions per place. [2023-01-28 01:44:44,563 INFO L82 GeneralOperation]: Start removeDead. Operand has 209 places, 233 transitions, 510 flow [2023-01-28 01:44:44,566 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 233 transitions, 510 flow [2023-01-28 01:44:44,584 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:44:44,585 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 209 places, 233 transitions, 510 flow [2023-01-28 01:44:44,585 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 209 places, 233 transitions, 510 flow [2023-01-28 01:44:44,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 233 transitions, 510 flow [2023-01-28 01:44:44,662 INFO L130 PetriNetUnfolder]: 81/579 cut-off events. [2023-01-28 01:44:44,663 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-01-28 01:44:44,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 634 conditions, 579 events. 81/579 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2270 event pairs, 6 based on Foata normal form. 0/493 useless extension candidates. Maximal degree in co-relation 405. Up to 32 conditions per place. [2023-01-28 01:44:44,701 INFO L119 LiptonReduction]: Number of co-enabled transitions 30384 [2023-01-28 01:44:47,189 INFO L134 LiptonReduction]: Checked pairs total: 94715 [2023-01-28 01:44:47,190 INFO L136 LiptonReduction]: Total number of compositions: 153 [2023-01-28 01:44:47,191 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:44:47,191 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;@481c65cf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:44:47,191 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:44:47,198 INFO L130 PetriNetUnfolder]: 21/123 cut-off events. [2023-01-28 01:44:47,198 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-01-28 01:44:47,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:44:47,198 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-01-28 01:44:47,198 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:44:47,198 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:44:47,198 INFO L85 PathProgramCache]: Analyzing trace with hash -2147103074, now seen corresponding path program 1 times [2023-01-28 01:44:47,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:44:47,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511635316] [2023-01-28 01:44:47,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:44:47,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:44:47,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:44:47,231 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:44:47,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:44:47,253 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:44:47,253 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:44:47,253 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:44:47,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 01:44:47,253 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:44:47,253 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:44:47,254 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:44:47,254 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-01-28 01:44:47,276 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-01-28 01:44:47,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 271 transitions, 602 flow [2023-01-28 01:44:47,368 INFO L130 PetriNetUnfolder]: 140/905 cut-off events. [2023-01-28 01:44:47,368 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-01-28 01:44:47,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1016 conditions, 905 events. 140/905 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4184 event pairs, 23 based on Foata normal form. 0/775 useless extension candidates. Maximal degree in co-relation 624. Up to 80 conditions per place. [2023-01-28 01:44:47,379 INFO L82 GeneralOperation]: Start removeDead. Operand has 242 places, 271 transitions, 602 flow [2023-01-28 01:44:47,384 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 242 places, 271 transitions, 602 flow [2023-01-28 01:44:47,385 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:44:47,385 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 242 places, 271 transitions, 602 flow [2023-01-28 01:44:47,385 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 242 places, 271 transitions, 602 flow [2023-01-28 01:44:47,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 271 transitions, 602 flow [2023-01-28 01:44:47,510 INFO L130 PetriNetUnfolder]: 140/905 cut-off events. [2023-01-28 01:44:47,511 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-01-28 01:44:47,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1016 conditions, 905 events. 140/905 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4184 event pairs, 23 based on Foata normal form. 0/775 useless extension candidates. Maximal degree in co-relation 624. Up to 80 conditions per place. [2023-01-28 01:44:47,533 INFO L119 LiptonReduction]: Number of co-enabled transitions 45000 [2023-01-28 01:44:50,061 INFO L134 LiptonReduction]: Checked pairs total: 129227 [2023-01-28 01:44:50,062 INFO L136 LiptonReduction]: Total number of compositions: 174 [2023-01-28 01:44:50,063 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:44:50,063 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;@481c65cf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:44:50,063 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:44:50,072 INFO L130 PetriNetUnfolder]: 30/165 cut-off events. [2023-01-28 01:44:50,072 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-01-28 01:44:50,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:44:50,072 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:44:50,072 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:44:50,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:44:50,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1627041130, now seen corresponding path program 1 times [2023-01-28 01:44:50,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:44:50,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541821777] [2023-01-28 01:44:50,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:44:50,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:44:50,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:44:50,125 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:44:50,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:44:50,138 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:44:50,138 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:44:50,139 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:44:50,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 01:44:50,139 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:44:50,139 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:44:50,139 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:44:50,139 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-01-28 01:44:50,158 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-01-28 01:44:50,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 275 places, 309 transitions, 696 flow [2023-01-28 01:44:50,337 INFO L130 PetriNetUnfolder]: 263/1503 cut-off events. [2023-01-28 01:44:50,337 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-01-28 01:44:50,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1735 conditions, 1503 events. 263/1503 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 8279 event pairs, 72 based on Foata normal form. 0/1297 useless extension candidates. Maximal degree in co-relation 1004. Up to 192 conditions per place. [2023-01-28 01:44:50,362 INFO L82 GeneralOperation]: Start removeDead. Operand has 275 places, 309 transitions, 696 flow [2023-01-28 01:44:50,374 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 275 places, 309 transitions, 696 flow [2023-01-28 01:44:50,374 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:44:50,374 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 275 places, 309 transitions, 696 flow [2023-01-28 01:44:50,375 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 275 places, 309 transitions, 696 flow [2023-01-28 01:44:50,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 275 places, 309 transitions, 696 flow [2023-01-28 01:44:50,566 INFO L130 PetriNetUnfolder]: 263/1503 cut-off events. [2023-01-28 01:44:50,567 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-01-28 01:44:50,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1735 conditions, 1503 events. 263/1503 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 8279 event pairs, 72 based on Foata normal form. 0/1297 useless extension candidates. Maximal degree in co-relation 1004. Up to 192 conditions per place. [2023-01-28 01:44:50,618 INFO L119 LiptonReduction]: Number of co-enabled transitions 62424 [2023-01-28 01:44:53,081 INFO L134 LiptonReduction]: Checked pairs total: 206454 [2023-01-28 01:44:53,081 INFO L136 LiptonReduction]: Total number of compositions: 195 [2023-01-28 01:44:53,082 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:44:53,083 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;@481c65cf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:44:53,083 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:44:53,095 INFO L130 PetriNetUnfolder]: 40/214 cut-off events. [2023-01-28 01:44:53,095 INFO L131 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2023-01-28 01:44:53,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:44:53,095 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:44:53,095 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:44:53,096 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:44:53,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1190858011, now seen corresponding path program 1 times [2023-01-28 01:44:53,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:44:53,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330094363] [2023-01-28 01:44:53,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:44:53,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:44:53,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:44:53,109 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:44:53,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:44:53,122 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:44:53,123 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:44:53,123 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:44:53,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 01:44:53,123 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:44:53,123 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:44:53,123 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:44:53,123 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-01-28 01:44:53,142 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-01-28 01:44:53,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 308 places, 347 transitions, 792 flow [2023-01-28 01:44:53,554 INFO L130 PetriNetUnfolder]: 530/2661 cut-off events. [2023-01-28 01:44:53,554 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-01-28 01:44:53,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3159 conditions, 2661 events. 530/2661 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 17467 event pairs, 201 based on Foata normal form. 0/2315 useless extension candidates. Maximal degree in co-relation 1721. Up to 448 conditions per place. [2023-01-28 01:44:53,588 INFO L82 GeneralOperation]: Start removeDead. Operand has 308 places, 347 transitions, 792 flow [2023-01-28 01:44:53,606 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 308 places, 347 transitions, 792 flow [2023-01-28 01:44:53,606 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:44:53,606 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 308 places, 347 transitions, 792 flow [2023-01-28 01:44:53,606 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 308 places, 347 transitions, 792 flow [2023-01-28 01:44:53,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 308 places, 347 transitions, 792 flow [2023-01-28 01:44:53,958 INFO L130 PetriNetUnfolder]: 530/2661 cut-off events. [2023-01-28 01:44:53,958 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-01-28 01:44:54,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3159 conditions, 2661 events. 530/2661 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 17467 event pairs, 201 based on Foata normal form. 0/2315 useless extension candidates. Maximal degree in co-relation 1721. Up to 448 conditions per place. [2023-01-28 01:44:54,138 INFO L119 LiptonReduction]: Number of co-enabled transitions 82656 [2023-01-28 01:44:56,714 INFO L134 LiptonReduction]: Checked pairs total: 249313 [2023-01-28 01:44:56,714 INFO L136 LiptonReduction]: Total number of compositions: 216 [2023-01-28 01:44:56,715 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:44:56,715 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;@481c65cf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:44:56,715 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:44:56,756 INFO L130 PetriNetUnfolder]: 54/274 cut-off events. [2023-01-28 01:44:56,756 INFO L131 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2023-01-28 01:44:56,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:44:56,756 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:44:56,756 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:44:56,757 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:44:56,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1911528724, now seen corresponding path program 1 times [2023-01-28 01:44:56,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:44:56,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46287928] [2023-01-28 01:44:56,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:44:56,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:44:56,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:44:56,789 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:44:56,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:44:56,815 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:44:56,815 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:44:56,815 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:44:56,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 01:44:56,816 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:44:56,816 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:44:56,816 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:44:56,816 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-01-28 01:44:56,844 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-01-28 01:44:56,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 341 places, 385 transitions, 890 flow [2023-01-28 01:44:57,607 INFO L130 PetriNetUnfolder]: 1117/4971 cut-off events. [2023-01-28 01:44:57,608 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-01-28 01:44:57,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6056 conditions, 4971 events. 1117/4971 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 38730 event pairs, 522 based on Foata normal form. 0/4357 useless extension candidates. Maximal degree in co-relation 3143. Up to 1024 conditions per place. [2023-01-28 01:44:57,702 INFO L82 GeneralOperation]: Start removeDead. Operand has 341 places, 385 transitions, 890 flow [2023-01-28 01:44:57,741 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 341 places, 385 transitions, 890 flow [2023-01-28 01:44:57,741 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:44:57,741 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 341 places, 385 transitions, 890 flow [2023-01-28 01:44:57,741 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 341 places, 385 transitions, 890 flow [2023-01-28 01:44:57,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 341 places, 385 transitions, 890 flow [2023-01-28 01:44:58,738 INFO L130 PetriNetUnfolder]: 1117/4971 cut-off events. [2023-01-28 01:44:58,739 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-01-28 01:44:58,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6056 conditions, 4971 events. 1117/4971 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 38730 event pairs, 522 based on Foata normal form. 0/4357 useless extension candidates. Maximal degree in co-relation 3143. Up to 1024 conditions per place. [2023-01-28 01:44:58,986 INFO L119 LiptonReduction]: Number of co-enabled transitions 105696 [2023-01-28 01:45:01,807 INFO L134 LiptonReduction]: Checked pairs total: 357916 [2023-01-28 01:45:01,807 INFO L136 LiptonReduction]: Total number of compositions: 237 [2023-01-28 01:45:01,810 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:45:01,811 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;@481c65cf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:45:01,811 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:45:01,841 INFO L130 PetriNetUnfolder]: 67/332 cut-off events. [2023-01-28 01:45:01,841 INFO L131 PetriNetUnfolder]: For 147/147 co-relation queries the response was YES. [2023-01-28 01:45:01,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:45:01,841 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:45:01,842 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:45:01,842 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:45:01,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1054347176, now seen corresponding path program 1 times [2023-01-28 01:45:01,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:45:01,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493284523] [2023-01-28 01:45:01,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:45:01,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:45:01,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:01,866 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:45:01,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:01,898 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:45:01,898 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:45:01,898 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:45:01,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 01:45:01,899 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:45:01,900 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:45:01,900 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:45:01,900 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-01-28 01:45:01,935 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-01-28 01:45:01,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 374 places, 423 transitions, 990 flow [2023-01-28 01:45:03,818 INFO L130 PetriNetUnfolder]: 2408/9649 cut-off events. [2023-01-28 01:45:03,818 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-01-28 01:45:03,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12026 conditions, 9649 events. 2408/9649 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 87511 event pairs, 1291 based on Foata normal form. 0/8511 useless extension candidates. Maximal degree in co-relation 6038. Up to 2304 conditions per place. [2023-01-28 01:45:03,974 INFO L82 GeneralOperation]: Start removeDead. Operand has 374 places, 423 transitions, 990 flow [2023-01-28 01:45:04,153 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 374 places, 423 transitions, 990 flow [2023-01-28 01:45:04,153 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:45:04,153 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 374 places, 423 transitions, 990 flow [2023-01-28 01:45:04,155 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 374 places, 423 transitions, 990 flow [2023-01-28 01:45:04,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 374 places, 423 transitions, 990 flow [2023-01-28 01:45:06,182 INFO L130 PetriNetUnfolder]: 2408/9649 cut-off events. [2023-01-28 01:45:06,182 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-01-28 01:45:06,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12026 conditions, 9649 events. 2408/9649 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 87511 event pairs, 1291 based on Foata normal form. 0/8511 useless extension candidates. Maximal degree in co-relation 6038. Up to 2304 conditions per place. [2023-01-28 01:45:06,748 INFO L119 LiptonReduction]: Number of co-enabled transitions 131544 [2023-01-28 01:45:09,515 INFO L134 LiptonReduction]: Checked pairs total: 453920 [2023-01-28 01:45:09,516 INFO L136 LiptonReduction]: Total number of compositions: 257 [2023-01-28 01:45:09,517 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:45:09,517 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;@481c65cf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:45:09,517 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:45:09,552 INFO L130 PetriNetUnfolder]: 97/432 cut-off events. [2023-01-28 01:45:09,552 INFO L131 PetriNetUnfolder]: For 215/215 co-relation queries the response was YES. [2023-01-28 01:45:09,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:45:09,553 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:45:09,553 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:45:09,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:45:09,553 INFO L85 PathProgramCache]: Analyzing trace with hash 534894791, now seen corresponding path program 1 times [2023-01-28 01:45:09,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:45:09,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642246964] [2023-01-28 01:45:09,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:45:09,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:45:09,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:09,568 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:45:09,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:09,582 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:45:09,582 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:45:09,582 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:45:09,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 01:45:09,583 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:45:09,583 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:45:09,583 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:45:09,583 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-01-28 01:45:09,649 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-01-28 01:45:09,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 407 places, 461 transitions, 1092 flow [2023-01-28 01:45:14,089 INFO L130 PetriNetUnfolder]: 5235/19191 cut-off events. [2023-01-28 01:45:14,089 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-01-28 01:45:14,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24397 conditions, 19191 events. 5235/19191 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 195624 event pairs, 3084 based on Foata normal form. 0/17017 useless extension candidates. Maximal degree in co-relation 12006. Up to 5120 conditions per place. [2023-01-28 01:45:14,471 INFO L82 GeneralOperation]: Start removeDead. Operand has 407 places, 461 transitions, 1092 flow [2023-01-28 01:45:14,655 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 407 places, 461 transitions, 1092 flow [2023-01-28 01:45:14,655 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:45:14,655 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 407 places, 461 transitions, 1092 flow [2023-01-28 01:45:14,655 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 407 places, 461 transitions, 1092 flow [2023-01-28 01:45:14,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 407 places, 461 transitions, 1092 flow [2023-01-28 01:45:19,240 INFO L130 PetriNetUnfolder]: 5235/19191 cut-off events. [2023-01-28 01:45:19,240 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-01-28 01:45:19,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24397 conditions, 19191 events. 5235/19191 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 195624 event pairs, 3084 based on Foata normal form. 0/17017 useless extension candidates. Maximal degree in co-relation 12006. Up to 5120 conditions per place. [2023-01-28 01:45:20,525 INFO L119 LiptonReduction]: Number of co-enabled transitions 160200 [2023-01-28 01:45:23,631 INFO L134 LiptonReduction]: Checked pairs total: 484924 [2023-01-28 01:45:23,631 INFO L136 LiptonReduction]: Total number of compositions: 280 [2023-01-28 01:45:23,632 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:45:23,633 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;@481c65cf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:45:23,633 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:45:23,672 INFO L130 PetriNetUnfolder]: 125/536 cut-off events. [2023-01-28 01:45:23,672 INFO L131 PetriNetUnfolder]: For 308/308 co-relation queries the response was YES. [2023-01-28 01:45:23,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:45:23,672 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:45:23,672 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:45:23,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:45:23,672 INFO L85 PathProgramCache]: Analyzing trace with hash 887428732, now seen corresponding path program 1 times [2023-01-28 01:45:23,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:45:23,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191763066] [2023-01-28 01:45:23,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:45:23,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:45:23,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:23,687 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:45:23,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:23,700 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:45:23,700 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:45:23,700 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:45:23,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 01:45:23,701 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:45:23,701 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:45:23,701 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:45:23,701 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-01-28 01:45:23,727 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-01-28 01:45:23,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 440 places, 499 transitions, 1196 flow [2023-01-28 01:45:33,653 INFO L130 PetriNetUnfolder]: 11390/38717 cut-off events. [2023-01-28 01:45:33,653 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-01-28 01:45:34,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50081 conditions, 38717 events. 11390/38717 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 730. Compared 439453 event pairs, 7181 based on Foata normal form. 0/34483 useless extension candidates. Maximal degree in co-relation 24375. Up to 11264 conditions per place. [2023-01-28 01:45:34,489 INFO L82 GeneralOperation]: Start removeDead. Operand has 440 places, 499 transitions, 1196 flow [2023-01-28 01:45:35,122 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 440 places, 499 transitions, 1196 flow [2023-01-28 01:45:35,122 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:45:35,122 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 440 places, 499 transitions, 1196 flow [2023-01-28 01:45:35,122 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 440 places, 499 transitions, 1196 flow [2023-01-28 01:45:35,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 440 places, 499 transitions, 1196 flow [2023-01-28 01:45:44,979 INFO L130 PetriNetUnfolder]: 11390/38717 cut-off events. [2023-01-28 01:45:44,979 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-01-28 01:45:45,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50081 conditions, 38717 events. 11390/38717 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 730. Compared 439453 event pairs, 7181 based on Foata normal form. 0/34483 useless extension candidates. Maximal degree in co-relation 24375. Up to 11264 conditions per place. [2023-01-28 01:45:47,750 INFO L119 LiptonReduction]: Number of co-enabled transitions 191664 [2023-01-28 01:45:50,652 INFO L134 LiptonReduction]: Checked pairs total: 586549 [2023-01-28 01:45:50,652 INFO L136 LiptonReduction]: Total number of compositions: 301 [2023-01-28 01:45:50,653 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:45:50,653 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;@481c65cf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:45:50,653 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:45:50,733 INFO L130 PetriNetUnfolder]: 170/679 cut-off events. [2023-01-28 01:45:50,733 INFO L131 PetriNetUnfolder]: For 436/436 co-relation queries the response was YES. [2023-01-28 01:45:50,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:45:50,733 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:45:50,734 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:45:50,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:45:50,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1830681937, now seen corresponding path program 1 times [2023-01-28 01:45:50,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:45:50,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435769956] [2023-01-28 01:45:50,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:45:50,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:45:50,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:50,750 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:45:50,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:45:50,763 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:45:50,764 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:45:50,764 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:45:50,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 01:45:50,764 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:45:50,764 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:45:50,764 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:45:50,764 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-01-28 01:45:50,793 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-01-28 01:45:50,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 473 places, 537 transitions, 1302 flow [2023-01-28 01:46:12,316 INFO L130 PetriNetUnfolder]: 24713/78723 cut-off events. [2023-01-28 01:46:12,316 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-01-28 01:46:15,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103414 conditions, 78723 events. 24713/78723 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1375. Compared 982420 event pairs, 16398 based on Foata normal form. 0/70381 useless extension candidates. Maximal degree in co-relation 50057. Up to 24576 conditions per place. [2023-01-28 01:46:15,753 INFO L82 GeneralOperation]: Start removeDead. Operand has 473 places, 537 transitions, 1302 flow [2023-01-28 01:46:17,134 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 473 places, 537 transitions, 1302 flow [2023-01-28 01:46:17,134 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:46:17,134 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 473 places, 537 transitions, 1302 flow [2023-01-28 01:46:17,134 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 473 places, 537 transitions, 1302 flow [2023-01-28 01:46:17,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 473 places, 537 transitions, 1302 flow [2023-01-28 01:46:38,917 INFO L130 PetriNetUnfolder]: 24713/78723 cut-off events. [2023-01-28 01:46:38,917 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-01-28 01:46:43,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103414 conditions, 78723 events. 24713/78723 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1375. Compared 982420 event pairs, 16398 based on Foata normal form. 0/70381 useless extension candidates. Maximal degree in co-relation 50057. Up to 24576 conditions per place. [2023-01-28 01:46:49,305 INFO L119 LiptonReduction]: Number of co-enabled transitions 225936 [2023-01-28 01:46:52,874 INFO L134 LiptonReduction]: Checked pairs total: 715578 [2023-01-28 01:46:52,874 INFO L136 LiptonReduction]: Total number of compositions: 322 [2023-01-28 01:46:52,875 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:46:52,875 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;@481c65cf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:46:52,875 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:46:52,954 INFO L130 PetriNetUnfolder]: 239/877 cut-off events. [2023-01-28 01:46:52,954 INFO L131 PetriNetUnfolder]: For 613/613 co-relation queries the response was YES. [2023-01-28 01:46:52,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:46:52,954 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 01:46:52,954 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:46:52,954 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:46:52,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1511832203, now seen corresponding path program 1 times [2023-01-28 01:46:52,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:46:52,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293446183] [2023-01-28 01:46:52,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:46:52,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:46:52,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:46:52,975 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:46:52,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:46:52,992 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:46:52,992 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:46:52,992 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:46:52,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 01:46:52,993 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:46:52,994 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:46:52,994 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:46:52,995 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-01-28 01:46:53,027 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-01-28 01:46:53,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 506 places, 575 transitions, 1410 flow [2023-01-28 01:47:42,941 INFO L130 PetriNetUnfolder]: 53396/160713 cut-off events. [2023-01-28 01:47:42,941 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-01-28 01:47:54,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214092 conditions, 160713 events. 53396/160713 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2706. Compared 2157497 event pairs, 36879 based on Foata normal form. 0/144167 useless extension candidates. Maximal degree in co-relation 103388. Up to 53248 conditions per place. [2023-01-28 01:47:54,463 INFO L82 GeneralOperation]: Start removeDead. Operand has 506 places, 575 transitions, 1410 flow [2023-01-28 01:47:58,272 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 506 places, 575 transitions, 1410 flow [2023-01-28 01:47:58,273 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:47:58,277 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 506 places, 575 transitions, 1410 flow [2023-01-28 01:47:58,278 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 506 places, 575 transitions, 1410 flow [2023-01-28 01:47:58,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 506 places, 575 transitions, 1410 flow [2023-01-28 01:48:47,576 INFO L130 PetriNetUnfolder]: 53396/160713 cut-off events. [2023-01-28 01:48:47,577 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-01-28 01:48:59,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214092 conditions, 160713 events. 53396/160713 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2706. Compared 2157497 event pairs, 36879 based on Foata normal form. 0/144167 useless extension candidates. Maximal degree in co-relation 103388. Up to 53248 conditions per place. [2023-01-28 01:49:17,355 INFO L119 LiptonReduction]: Number of co-enabled transitions 263016 [2023-01-28 01:49:20,043 INFO L134 LiptonReduction]: Checked pairs total: 818836 [2023-01-28 01:49:20,043 INFO L136 LiptonReduction]: Total number of compositions: 343 [2023-01-28 01:49:20,044 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:49:20,047 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;@481c65cf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:49:20,047 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:49:20,157 INFO L130 PetriNetUnfolder]: 349/1177 cut-off events. [2023-01-28 01:49:20,157 INFO L131 PetriNetUnfolder]: For 861/861 co-relation queries the response was YES. [2023-01-28 01:49:20,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:49:20,157 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 01:49:20,157 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:49:20,158 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:49:20,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1025883357, now seen corresponding path program 1 times [2023-01-28 01:49:20,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:49:20,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574273228] [2023-01-28 01:49:20,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:49:20,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:49:20,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:49:20,180 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:49:20,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:49:20,200 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:49:20,200 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:49:20,200 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:49:20,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 01:49:20,200 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:49:20,201 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:49:20,201 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:49:20,201 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-01-28 01:49:20,235 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-01-28 01:49:20,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 539 places, 613 transitions, 1520 flow