./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_51-mutexptr_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_51-mutexptr_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f222d5749b9bb10b4d4c09b2c40e45ee19dec77732a8593ce917652e8ca8a43e --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 11:04:24,277 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 11:04:24,279 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 11:04:24,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 11:04:24,299 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 11:04:24,300 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 11:04:24,300 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 11:04:24,302 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 11:04:24,303 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 11:04:24,306 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 11:04:24,306 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 11:04:24,309 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 11:04:24,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 11:04:24,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 11:04:24,312 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 11:04:24,314 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 11:04:24,315 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 11:04:24,316 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 11:04:24,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 11:04:24,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 11:04:24,329 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 11:04:24,331 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 11:04:24,332 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 11:04:24,333 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 11:04:24,335 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 11:04:24,337 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 11:04:24,338 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 11:04:24,338 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 11:04:24,339 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 11:04:24,340 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 11:04:24,342 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 11:04:24,342 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 11:04:24,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 11:04:24,344 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 11:04:24,345 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 11:04:24,345 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 11:04:24,346 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 11:04:24,346 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 11:04:24,346 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 11:04:24,346 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 11:04:24,347 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 11:04:24,348 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 11:04:24,369 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 11:04:24,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 11:04:24,370 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 11:04:24,370 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 11:04:24,371 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 11:04:24,371 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 11:04:24,371 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 11:04:24,371 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 11:04:24,371 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 11:04:24,372 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 11:04:24,372 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 11:04:24,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 11:04:24,372 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 11:04:24,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 11:04:24,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 11:04:24,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 11:04:24,373 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 11:04:24,373 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 11:04:24,373 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 11:04:24,373 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 11:04:24,374 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 11:04:24,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 11:04:24,374 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 11:04:24,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 11:04:24,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 11:04:24,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 11:04:24,375 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 11:04:24,375 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 11:04:24,375 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 11:04:24,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 11:04:24,375 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 11:04:24,375 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 11:04:24,375 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 11:04:24,376 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 11:04:24,376 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 11:04:24,376 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f222d5749b9bb10b4d4c09b2c40e45ee19dec77732a8593ce917652e8ca8a43e Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 11:04:24,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 11:04:24,633 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 11:04:24,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 11:04:24,635 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 11:04:24,636 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 11:04:24,636 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_51-mutexptr_racefree.i [2023-09-01 11:04:25,559 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 11:04:25,749 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 11:04:25,754 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_51-mutexptr_racefree.i [2023-09-01 11:04:25,766 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e4774770/fdf0fad961c1437190f03b6e06f1abe9/FLAG179ad4275 [2023-09-01 11:04:25,774 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e4774770/fdf0fad961c1437190f03b6e06f1abe9 [2023-09-01 11:04:25,776 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 11:04:25,777 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 11:04:25,778 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 11:04:25,778 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 11:04:25,780 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 11:04:25,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 11:04:25" (1/1) ... [2023-09-01 11:04:25,781 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e13a232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:04:25, skipping insertion in model container [2023-09-01 11:04:25,781 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 11:04:25" (1/1) ... [2023-09-01 11:04:25,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 11:04:25,826 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 11:04:26,068 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_51-mutexptr_racefree.i[30176,30189] [2023-09-01 11:04:26,082 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 11:04:26,095 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 11:04:26,126 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_51-mutexptr_racefree.i[30176,30189] [2023-09-01 11:04:26,138 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 11:04:26,168 INFO L208 MainTranslator]: Completed translation [2023-09-01 11:04:26,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:04:26 WrapperNode [2023-09-01 11:04:26,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 11:04:26,169 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 11:04:26,169 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 11:04:26,170 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 11:04:26,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:04:26" (1/1) ... [2023-09-01 11:04:26,185 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:04:26" (1/1) ... [2023-09-01 11:04:26,213 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 88 [2023-09-01 11:04:26,213 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 11:04:26,214 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 11:04:26,214 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 11:04:26,214 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 11:04:26,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:04:26" (1/1) ... [2023-09-01 11:04:26,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:04:26" (1/1) ... [2023-09-01 11:04:26,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:04:26" (1/1) ... [2023-09-01 11:04:26,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:04:26" (1/1) ... [2023-09-01 11:04:26,236 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:04:26" (1/1) ... [2023-09-01 11:04:26,240 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:04:26" (1/1) ... [2023-09-01 11:04:26,257 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:04:26" (1/1) ... [2023-09-01 11:04:26,282 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:04:26" (1/1) ... [2023-09-01 11:04:26,284 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 11:04:26,284 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 11:04:26,285 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 11:04:26,285 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 11:04:26,285 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:04:26" (1/1) ... [2023-09-01 11:04:26,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 11:04:26,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 11:04:26,316 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) [2023-09-01 11:04:26,334 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 [2023-09-01 11:04:26,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 11:04:26,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 11:04:26,346 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 11:04:26,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 11:04:26,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 11:04:26,347 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 11:04:26,347 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 11:04:26,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 11:04:26,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 11:04:26,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 11:04:26,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 11:04:26,348 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 11:04:26,465 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 11:04:26,467 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 11:04:26,656 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 11:04:26,661 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 11:04:26,661 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-09-01 11:04:26,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 11:04:26 BoogieIcfgContainer [2023-09-01 11:04:26,663 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 11:04:26,664 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 11:04:26,664 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 11:04:26,666 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 11:04:26,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 11:04:25" (1/3) ... [2023-09-01 11:04:26,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dfacff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 11:04:26, skipping insertion in model container [2023-09-01 11:04:26,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:04:26" (2/3) ... [2023-09-01 11:04:26,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dfacff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 11:04:26, skipping insertion in model container [2023-09-01 11:04:26,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 11:04:26" (3/3) ... [2023-09-01 11:04:26,668 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_51-mutexptr_racefree.i [2023-09-01 11:04:26,673 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 11:04:26,679 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 11:04:26,680 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 11:04:26,680 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 11:04:26,732 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 11:04:26,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 123 transitions, 254 flow [2023-09-01 11:04:26,817 INFO L130 PetriNetUnfolder]: 17/159 cut-off events. [2023-09-01 11:04:26,818 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 11:04:26,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 159 events. 17/159 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 361 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 76. Up to 4 conditions per place. [2023-09-01 11:04:26,823 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 123 transitions, 254 flow [2023-09-01 11:04:26,828 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 118 transitions, 241 flow [2023-09-01 11:04:26,831 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:04:26,841 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 110 places, 118 transitions, 241 flow [2023-09-01 11:04:26,848 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 110 places, 118 transitions, 241 flow [2023-09-01 11:04:26,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 118 transitions, 241 flow [2023-09-01 11:04:26,892 INFO L130 PetriNetUnfolder]: 16/154 cut-off events. [2023-09-01 11:04:26,894 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 11:04:26,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 154 events. 16/154 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 348 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 76. Up to 4 conditions per place. [2023-09-01 11:04:26,898 INFO L119 LiptonReduction]: Number of co-enabled transitions 2940 [2023-09-01 11:04:29,884 INFO L134 LiptonReduction]: Checked pairs total: 4871 [2023-09-01 11:04:29,884 INFO L136 LiptonReduction]: Total number of compositions: 100 [2023-09-01 11:04:29,901 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:04:29,906 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, 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;@78795542, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:04:29,906 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:04:29,912 INFO L130 PetriNetUnfolder]: 3/20 cut-off events. [2023-09-01 11:04:29,912 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 11:04:29,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:04:29,913 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 11:04:29,913 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:04:29,917 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:04:29,917 INFO L85 PathProgramCache]: Analyzing trace with hash 846211692, now seen corresponding path program 1 times [2023-09-01 11:04:29,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:04:29,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136741490] [2023-09-01 11:04:29,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:04:29,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:04:30,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:04:30,036 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:04:30,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:04:30,087 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:04:30,089 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:04:30,089 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:04:30,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 11:04:30,091 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:04:30,094 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:04:30,094 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:04:30,094 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 11:04:30,117 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 11:04:30,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 160 transitions, 338 flow [2023-09-01 11:04:30,171 INFO L130 PetriNetUnfolder]: 31/256 cut-off events. [2023-09-01 11:04:30,171 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 11:04:30,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270 conditions, 256 events. 31/256 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 749 event pairs, 0 based on Foata normal form. 0/218 useless extension candidates. Maximal degree in co-relation 161. Up to 8 conditions per place. [2023-09-01 11:04:30,175 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 160 transitions, 338 flow [2023-09-01 11:04:30,177 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 160 transitions, 338 flow [2023-09-01 11:04:30,177 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:04:30,177 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 146 places, 160 transitions, 338 flow [2023-09-01 11:04:30,177 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 146 places, 160 transitions, 338 flow [2023-09-01 11:04:30,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 160 transitions, 338 flow [2023-09-01 11:04:30,206 INFO L130 PetriNetUnfolder]: 31/256 cut-off events. [2023-09-01 11:04:30,206 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 11:04:30,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270 conditions, 256 events. 31/256 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 749 event pairs, 0 based on Foata normal form. 0/218 useless extension candidates. Maximal degree in co-relation 161. Up to 8 conditions per place. [2023-09-01 11:04:30,212 INFO L119 LiptonReduction]: Number of co-enabled transitions 9100 [2023-09-01 11:04:33,097 INFO L134 LiptonReduction]: Checked pairs total: 17653 [2023-09-01 11:04:33,097 INFO L136 LiptonReduction]: Total number of compositions: 125 [2023-09-01 11:04:33,098 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:04:33,099 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, 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;@78795542, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:04:33,099 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:04:33,107 INFO L130 PetriNetUnfolder]: 12/56 cut-off events. [2023-09-01 11:04:33,108 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 11:04:33,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:04:33,108 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 11:04:33,109 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:04:33,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:04:33,109 INFO L85 PathProgramCache]: Analyzing trace with hash -431453289, now seen corresponding path program 1 times [2023-09-01 11:04:33,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:04:33,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650993963] [2023-09-01 11:04:33,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:04:33,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:04:33,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:04:33,136 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:04:33,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:04:33,158 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:04:33,159 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:04:33,159 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:04:33,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 11:04:33,159 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:04:33,160 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:04:33,160 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:04:33,161 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 11:04:33,181 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 11:04:33,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 197 transitions, 424 flow [2023-09-01 11:04:33,229 INFO L130 PetriNetUnfolder]: 50/384 cut-off events. [2023-09-01 11:04:33,229 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 11:04:33,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 384 events. 50/384 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1280 event pairs, 1 based on Foata normal form. 0/326 useless extension candidates. Maximal degree in co-relation 264. Up to 16 conditions per place. [2023-09-01 11:04:33,233 INFO L82 GeneralOperation]: Start removeDead. Operand has 178 places, 197 transitions, 424 flow [2023-09-01 11:04:33,236 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 178 places, 197 transitions, 424 flow [2023-09-01 11:04:33,236 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:04:33,236 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 178 places, 197 transitions, 424 flow [2023-09-01 11:04:33,236 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 178 places, 197 transitions, 424 flow [2023-09-01 11:04:33,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 197 transitions, 424 flow [2023-09-01 11:04:33,274 INFO L130 PetriNetUnfolder]: 50/384 cut-off events. [2023-09-01 11:04:33,274 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 11:04:33,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 384 events. 50/384 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1280 event pairs, 1 based on Foata normal form. 0/326 useless extension candidates. Maximal degree in co-relation 264. Up to 16 conditions per place. [2023-09-01 11:04:33,291 INFO L119 LiptonReduction]: Number of co-enabled transitions 17640 [2023-09-01 11:04:36,461 INFO L134 LiptonReduction]: Checked pairs total: 41362 [2023-09-01 11:04:36,461 INFO L136 LiptonReduction]: Total number of compositions: 149 [2023-09-01 11:04:36,464 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:04:36,465 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=true, 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;@78795542, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:04:36,465 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:04:36,470 INFO L130 PetriNetUnfolder]: 24/97 cut-off events. [2023-09-01 11:04:36,470 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 11:04:36,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:04:36,471 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 11:04:36,471 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:04:36,471 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:04:36,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1581675497, now seen corresponding path program 1 times [2023-09-01 11:04:36,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:04:36,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651147353] [2023-09-01 11:04:36,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:04:36,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:04:36,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:04:36,500 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:04:36,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:04:36,529 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:04:36,530 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:04:36,531 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:04:36,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 11:04:36,531 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:04:36,532 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:04:36,532 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:04:36,532 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 11:04:36,566 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 11:04:36,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 234 transitions, 512 flow [2023-09-01 11:04:36,640 INFO L130 PetriNetUnfolder]: 81/576 cut-off events. [2023-09-01 11:04:36,640 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 11:04:36,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 631 conditions, 576 events. 81/576 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2235 event pairs, 6 based on Foata normal form. 0/490 useless extension candidates. Maximal degree in co-relation 404. Up to 32 conditions per place. [2023-09-01 11:04:36,646 INFO L82 GeneralOperation]: Start removeDead. Operand has 210 places, 234 transitions, 512 flow [2023-09-01 11:04:36,649 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 210 places, 234 transitions, 512 flow [2023-09-01 11:04:36,650 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:04:36,650 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 210 places, 234 transitions, 512 flow [2023-09-01 11:04:36,650 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 210 places, 234 transitions, 512 flow [2023-09-01 11:04:36,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 234 transitions, 512 flow [2023-09-01 11:04:36,709 INFO L130 PetriNetUnfolder]: 81/576 cut-off events. [2023-09-01 11:04:36,709 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 11:04:36,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 631 conditions, 576 events. 81/576 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2235 event pairs, 6 based on Foata normal form. 0/490 useless extension candidates. Maximal degree in co-relation 404. Up to 32 conditions per place. [2023-09-01 11:04:36,726 INFO L119 LiptonReduction]: Number of co-enabled transitions 28840 [2023-09-01 11:04:39,871 INFO L134 LiptonReduction]: Checked pairs total: 68312 [2023-09-01 11:04:39,872 INFO L136 LiptonReduction]: Total number of compositions: 170 [2023-09-01 11:04:39,873 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:04:39,874 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=true, 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;@78795542, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:04:39,874 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:04:39,880 INFO L130 PetriNetUnfolder]: 33/134 cut-off events. [2023-09-01 11:04:39,880 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-09-01 11:04:39,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:04:39,881 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 11:04:39,881 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:04:39,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:04:39,881 INFO L85 PathProgramCache]: Analyzing trace with hash -667862727, now seen corresponding path program 1 times [2023-09-01 11:04:39,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:04:39,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065192619] [2023-09-01 11:04:39,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:04:39,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:04:39,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:04:39,937 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:04:39,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:04:39,952 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:04:39,952 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:04:39,952 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:04:39,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 11:04:39,952 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:04:39,969 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:04:39,969 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:04:39,969 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 11:04:39,984 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 11:04:39,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 271 transitions, 602 flow [2023-09-01 11:04:40,096 INFO L130 PetriNetUnfolder]: 140/900 cut-off events. [2023-09-01 11:04:40,097 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 11:04:40,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1011 conditions, 900 events. 140/900 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4077 event pairs, 23 based on Foata normal form. 0/770 useless extension candidates. Maximal degree in co-relation 621. Up to 80 conditions per place. [2023-09-01 11:04:40,105 INFO L82 GeneralOperation]: Start removeDead. Operand has 242 places, 271 transitions, 602 flow [2023-09-01 11:04:40,111 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 242 places, 271 transitions, 602 flow [2023-09-01 11:04:40,111 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:04:40,111 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 242 places, 271 transitions, 602 flow [2023-09-01 11:04:40,111 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 242 places, 271 transitions, 602 flow [2023-09-01 11:04:40,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 271 transitions, 602 flow [2023-09-01 11:04:40,213 INFO L130 PetriNetUnfolder]: 140/900 cut-off events. [2023-09-01 11:04:40,213 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 11:04:40,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1011 conditions, 900 events. 140/900 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4077 event pairs, 23 based on Foata normal form. 0/770 useless extension candidates. Maximal degree in co-relation 621. Up to 80 conditions per place. [2023-09-01 11:04:40,236 INFO L119 LiptonReduction]: Number of co-enabled transitions 42700 [2023-09-01 11:04:43,339 INFO L134 LiptonReduction]: Checked pairs total: 103735 [2023-09-01 11:04:43,339 INFO L136 LiptonReduction]: Total number of compositions: 190 [2023-09-01 11:04:43,340 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:04:43,341 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=true, 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;@78795542, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:04:43,341 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:04:43,350 INFO L130 PetriNetUnfolder]: 48/188 cut-off events. [2023-09-01 11:04:43,350 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-09-01 11:04:43,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:04:43,351 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:04:43,351 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:04:43,351 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:04:43,351 INFO L85 PathProgramCache]: Analyzing trace with hash -281911859, now seen corresponding path program 1 times [2023-09-01 11:04:43,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:04:43,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833020464] [2023-09-01 11:04:43,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:04:43,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:04:43,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:04:43,368 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:04:43,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:04:43,382 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:04:43,382 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:04:43,382 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:04:43,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 11:04:43,383 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:04:43,383 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:04:43,383 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:04:43,383 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 11:04:43,402 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 11:04:43,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 274 places, 308 transitions, 694 flow [2023-09-01 11:04:43,569 INFO L130 PetriNetUnfolder]: 263/1496 cut-off events. [2023-09-01 11:04:43,569 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 11:04:43,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1728 conditions, 1496 events. 263/1496 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 8213 event pairs, 72 based on Foata normal form. 0/1290 useless extension candidates. Maximal degree in co-relation 999. Up to 192 conditions per place. [2023-09-01 11:04:43,588 INFO L82 GeneralOperation]: Start removeDead. Operand has 274 places, 308 transitions, 694 flow [2023-09-01 11:04:43,601 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 274 places, 308 transitions, 694 flow [2023-09-01 11:04:43,602 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:04:43,602 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 274 places, 308 transitions, 694 flow [2023-09-01 11:04:43,602 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 274 places, 308 transitions, 694 flow [2023-09-01 11:04:43,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 274 places, 308 transitions, 694 flow [2023-09-01 11:04:43,774 INFO L130 PetriNetUnfolder]: 263/1496 cut-off events. [2023-09-01 11:04:43,775 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 11:04:43,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1728 conditions, 1496 events. 263/1496 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 8213 event pairs, 72 based on Foata normal form. 0/1290 useless extension candidates. Maximal degree in co-relation 999. Up to 192 conditions per place. [2023-09-01 11:04:43,849 INFO L119 LiptonReduction]: Number of co-enabled transitions 59220 [2023-09-01 11:04:46,931 INFO L134 LiptonReduction]: Checked pairs total: 147264 [2023-09-01 11:04:46,931 INFO L136 LiptonReduction]: Total number of compositions: 218 [2023-09-01 11:04:46,933 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:04:46,933 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, 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;@78795542, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:04:46,933 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:04:46,946 INFO L130 PetriNetUnfolder]: 64/248 cut-off events. [2023-09-01 11:04:46,946 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-09-01 11:04:46,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:04:46,946 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:04:46,947 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:04:46,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:04:46,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1068875997, now seen corresponding path program 1 times [2023-09-01 11:04:46,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:04:46,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401464263] [2023-09-01 11:04:46,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:04:46,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:04:46,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:04:46,988 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:04:46,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:04:47,002 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:04:47,002 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:04:47,002 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:04:47,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 11:04:47,002 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:04:47,003 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:04:47,003 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:04:47,003 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 11:04:47,028 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 11:04:47,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 306 places, 345 transitions, 788 flow [2023-09-01 11:04:47,416 INFO L130 PetriNetUnfolder]: 530/2652 cut-off events. [2023-09-01 11:04:47,416 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 11:04:47,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3150 conditions, 2652 events. 530/2652 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 17482 event pairs, 201 based on Foata normal form. 0/2306 useless extension candidates. Maximal degree in co-relation 1714. Up to 448 conditions per place. [2023-09-01 11:04:47,453 INFO L82 GeneralOperation]: Start removeDead. Operand has 306 places, 345 transitions, 788 flow [2023-09-01 11:04:47,501 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 306 places, 345 transitions, 788 flow [2023-09-01 11:04:47,502 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:04:47,502 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 306 places, 345 transitions, 788 flow [2023-09-01 11:04:47,502 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 306 places, 345 transitions, 788 flow [2023-09-01 11:04:47,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 306 places, 345 transitions, 788 flow [2023-09-01 11:04:47,874 INFO L130 PetriNetUnfolder]: 530/2652 cut-off events. [2023-09-01 11:04:47,875 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 11:04:47,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3150 conditions, 2652 events. 530/2652 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 17482 event pairs, 201 based on Foata normal form. 0/2306 useless extension candidates. Maximal degree in co-relation 1714. Up to 448 conditions per place. [2023-09-01 11:04:47,974 INFO L119 LiptonReduction]: Number of co-enabled transitions 78400 [2023-09-01 11:04:51,389 INFO L134 LiptonReduction]: Checked pairs total: 198127 [2023-09-01 11:04:51,389 INFO L136 LiptonReduction]: Total number of compositions: 239 [2023-09-01 11:04:51,390 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:04:51,390 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=true, 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;@78795542, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:04:51,390 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:04:51,411 INFO L130 PetriNetUnfolder]: 76/316 cut-off events. [2023-09-01 11:04:51,411 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-09-01 11:04:51,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:04:51,411 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:04:51,411 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:04:51,411 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:04:51,412 INFO L85 PathProgramCache]: Analyzing trace with hash -241256761, now seen corresponding path program 1 times [2023-09-01 11:04:51,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:04:51,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546185448] [2023-09-01 11:04:51,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:04:51,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:04:51,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:04:51,444 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:04:51,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:04:51,474 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:04:51,474 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:04:51,475 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:04:51,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 11:04:51,475 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:04:51,475 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:04:51,475 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:04:51,475 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 11:04:51,497 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 11:04:51,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 338 places, 382 transitions, 884 flow [2023-09-01 11:04:52,380 INFO L130 PetriNetUnfolder]: 1117/4960 cut-off events. [2023-09-01 11:04:52,380 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 11:04:52,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6045 conditions, 4960 events. 1117/4960 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 39165 event pairs, 522 based on Foata normal form. 0/4346 useless extension candidates. Maximal degree in co-relation 3134. Up to 1024 conditions per place. [2023-09-01 11:04:52,453 INFO L82 GeneralOperation]: Start removeDead. Operand has 338 places, 382 transitions, 884 flow [2023-09-01 11:04:52,492 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 338 places, 382 transitions, 884 flow [2023-09-01 11:04:52,492 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:04:52,493 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 338 places, 382 transitions, 884 flow [2023-09-01 11:04:52,493 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 338 places, 382 transitions, 884 flow [2023-09-01 11:04:52,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 338 places, 382 transitions, 884 flow [2023-09-01 11:04:53,427 INFO L130 PetriNetUnfolder]: 1117/4960 cut-off events. [2023-09-01 11:04:53,427 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 11:04:53,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6045 conditions, 4960 events. 1117/4960 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 39165 event pairs, 522 based on Foata normal form. 0/4346 useless extension candidates. Maximal degree in co-relation 3134. Up to 1024 conditions per place. [2023-09-01 11:04:53,719 INFO L119 LiptonReduction]: Number of co-enabled transitions 100240 [2023-09-01 11:04:57,953 INFO L134 LiptonReduction]: Checked pairs total: 260911 [2023-09-01 11:04:57,953 INFO L136 LiptonReduction]: Total number of compositions: 258 [2023-09-01 11:04:57,956 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:04:57,957 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=true, 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;@78795542, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:04:57,957 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:04:58,002 INFO L130 PetriNetUnfolder]: 115/432 cut-off events. [2023-09-01 11:04:58,002 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-09-01 11:04:58,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:04:58,003 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:04:58,003 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:04:58,003 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:04:58,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1572287570, now seen corresponding path program 1 times [2023-09-01 11:04:58,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:04:58,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195455944] [2023-09-01 11:04:58,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:04:58,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:04:58,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:04:58,024 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:04:58,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:04:58,043 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:04:58,043 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:04:58,043 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:04:58,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 11:04:58,044 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:04:58,044 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:04:58,044 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:04:58,044 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 11:04:58,077 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 11:04:58,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 370 places, 419 transitions, 982 flow [2023-09-01 11:04:59,946 INFO L130 PetriNetUnfolder]: 2408/9636 cut-off events. [2023-09-01 11:04:59,947 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 11:05:00,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12013 conditions, 9636 events. 2408/9636 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 87224 event pairs, 1291 based on Foata normal form. 0/8498 useless extension candidates. Maximal degree in co-relation 6027. Up to 2304 conditions per place. [2023-09-01 11:05:00,100 INFO L82 GeneralOperation]: Start removeDead. Operand has 370 places, 419 transitions, 982 flow [2023-09-01 11:05:00,184 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 370 places, 419 transitions, 982 flow [2023-09-01 11:05:00,184 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:05:00,184 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 370 places, 419 transitions, 982 flow [2023-09-01 11:05:00,184 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 370 places, 419 transitions, 982 flow [2023-09-01 11:05:00,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 370 places, 419 transitions, 982 flow [2023-09-01 11:05:01,908 INFO L130 PetriNetUnfolder]: 2408/9636 cut-off events. [2023-09-01 11:05:01,909 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 11:05:02,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12013 conditions, 9636 events. 2408/9636 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 87224 event pairs, 1291 based on Foata normal form. 0/8498 useless extension candidates. Maximal degree in co-relation 6027. Up to 2304 conditions per place. [2023-09-01 11:05:02,559 INFO L119 LiptonReduction]: Number of co-enabled transitions 124740 [2023-09-01 11:05:06,826 INFO L134 LiptonReduction]: Checked pairs total: 322625 [2023-09-01 11:05:06,826 INFO L136 LiptonReduction]: Total number of compositions: 285 [2023-09-01 11:05:06,828 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:05:06,828 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=true, 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;@78795542, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:05:06,828 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:05:06,874 INFO L130 PetriNetUnfolder]: 159/579 cut-off events. [2023-09-01 11:05:06,874 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-09-01 11:05:06,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:05:06,875 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:05:06,875 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:05:06,875 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:05:06,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1994085671, now seen corresponding path program 1 times [2023-09-01 11:05:06,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:05:06,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541513949] [2023-09-01 11:05:06,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:05:06,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:05:06,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:05:06,890 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:05:06,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:05:06,903 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:05:06,903 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:05:06,904 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:05:06,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 11:05:06,904 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:05:06,904 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:05:06,904 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:05:06,905 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 11:05:06,928 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 11:05:06,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 402 places, 456 transitions, 1082 flow [2023-09-01 11:05:10,771 INFO L130 PetriNetUnfolder]: 5235/19176 cut-off events. [2023-09-01 11:05:10,771 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 11:05:11,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24382 conditions, 19176 events. 5235/19176 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 195855 event pairs, 3084 based on Foata normal form. 0/17002 useless extension candidates. Maximal degree in co-relation 11993. Up to 5120 conditions per place. [2023-09-01 11:05:11,117 INFO L82 GeneralOperation]: Start removeDead. Operand has 402 places, 456 transitions, 1082 flow [2023-09-01 11:05:11,370 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 402 places, 456 transitions, 1082 flow [2023-09-01 11:05:11,370 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:05:11,370 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 402 places, 456 transitions, 1082 flow [2023-09-01 11:05:11,370 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 402 places, 456 transitions, 1082 flow [2023-09-01 11:05:11,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 402 places, 456 transitions, 1082 flow [2023-09-01 11:05:15,324 INFO L130 PetriNetUnfolder]: 5235/19176 cut-off events. [2023-09-01 11:05:15,324 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 11:05:15,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24382 conditions, 19176 events. 5235/19176 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 195855 event pairs, 3084 based on Foata normal form. 0/17002 useless extension candidates. Maximal degree in co-relation 11993. Up to 5120 conditions per place. [2023-09-01 11:05:16,595 INFO L119 LiptonReduction]: Number of co-enabled transitions 151900 [2023-09-01 11:05:20,939 INFO L134 LiptonReduction]: Checked pairs total: 391729 [2023-09-01 11:05:20,940 INFO L136 LiptonReduction]: Total number of compositions: 306 [2023-09-01 11:05:20,941 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:05:20,941 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=true, 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;@78795542, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:05:20,941 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:05:20,995 INFO L130 PetriNetUnfolder]: 236/811 cut-off events. [2023-09-01 11:05:20,995 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-09-01 11:05:20,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:05:20,995 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:05:20,995 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:05:20,995 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:05:20,996 INFO L85 PathProgramCache]: Analyzing trace with hash 163156306, now seen corresponding path program 1 times [2023-09-01 11:05:20,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:05:20,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158735942] [2023-09-01 11:05:20,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:05:20,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:05:21,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:05:21,010 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:05:21,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:05:21,023 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:05:21,036 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:05:21,037 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:05:21,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 11:05:21,037 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:05:21,037 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:05:21,037 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:05:21,037 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 11:05:21,074 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 11:05:21,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 434 places, 493 transitions, 1184 flow [2023-09-01 11:05:29,763 INFO L130 PetriNetUnfolder]: 11390/38700 cut-off events. [2023-09-01 11:05:29,763 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 11:05:30,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50064 conditions, 38700 events. 11390/38700 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 442806 event pairs, 7181 based on Foata normal form. 0/34466 useless extension candidates. Maximal degree in co-relation 24360. Up to 11264 conditions per place. [2023-09-01 11:05:30,575 INFO L82 GeneralOperation]: Start removeDead. Operand has 434 places, 493 transitions, 1184 flow [2023-09-01 11:05:31,129 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 434 places, 493 transitions, 1184 flow [2023-09-01 11:05:31,129 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:05:31,129 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 434 places, 493 transitions, 1184 flow [2023-09-01 11:05:31,129 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 434 places, 493 transitions, 1184 flow [2023-09-01 11:05:31,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 434 places, 493 transitions, 1184 flow [2023-09-01 11:05:39,763 INFO L130 PetriNetUnfolder]: 11390/38700 cut-off events. [2023-09-01 11:05:39,763 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 11:05:40,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50064 conditions, 38700 events. 11390/38700 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 442806 event pairs, 7181 based on Foata normal form. 0/34466 useless extension candidates. Maximal degree in co-relation 24360. Up to 11264 conditions per place. [2023-09-01 11:05:42,325 INFO L119 LiptonReduction]: Number of co-enabled transitions 181720 [2023-09-01 11:05:46,766 INFO L134 LiptonReduction]: Checked pairs total: 470856 [2023-09-01 11:05:46,766 INFO L136 LiptonReduction]: Total number of compositions: 324 [2023-09-01 11:05:46,767 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:05:46,768 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=true, 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;@78795542, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:05:46,768 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:05:46,870 INFO L130 PetriNetUnfolder]: 349/1145 cut-off events. [2023-09-01 11:05:46,871 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-09-01 11:05:46,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:05:46,871 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:05:46,871 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:05:46,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:05:46,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1397897506, now seen corresponding path program 1 times [2023-09-01 11:05:46,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:05:46,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016363481] [2023-09-01 11:05:46,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:05:46,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:05:46,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:05:46,893 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:05:46,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:05:46,914 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:05:46,916 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:05:46,916 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:05:46,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 11:05:46,917 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:05:46,918 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:05:46,918 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:05:46,918 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 11:05:46,954 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 11:05:46,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 466 places, 530 transitions, 1288 flow [2023-09-01 11:06:06,075 INFO L130 PetriNetUnfolder]: 24713/78704 cut-off events. [2023-09-01 11:06:06,075 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 11:06:08,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103395 conditions, 78704 events. 24713/78704 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1326. Compared 984993 event pairs, 16398 based on Foata normal form. 0/70362 useless extension candidates. Maximal degree in co-relation 50040. Up to 24576 conditions per place. [2023-09-01 11:06:08,843 INFO L82 GeneralOperation]: Start removeDead. Operand has 466 places, 530 transitions, 1288 flow [2023-09-01 11:06:09,993 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 466 places, 530 transitions, 1288 flow [2023-09-01 11:06:09,993 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:06:09,993 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 466 places, 530 transitions, 1288 flow [2023-09-01 11:06:09,994 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 466 places, 530 transitions, 1288 flow [2023-09-01 11:06:09,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 466 places, 530 transitions, 1288 flow [2023-09-01 11:06:29,021 INFO L130 PetriNetUnfolder]: 24713/78704 cut-off events. [2023-09-01 11:06:29,021 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 11:06:31,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103395 conditions, 78704 events. 24713/78704 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1326. Compared 984993 event pairs, 16398 based on Foata normal form. 0/70362 useless extension candidates. Maximal degree in co-relation 50040. Up to 24576 conditions per place. [2023-09-01 11:06:36,468 INFO L119 LiptonReduction]: Number of co-enabled transitions 214200 [2023-09-01 11:06:40,831 INFO L134 LiptonReduction]: Checked pairs total: 508192 [2023-09-01 11:06:40,831 INFO L136 LiptonReduction]: Total number of compositions: 351 [2023-09-01 11:06:40,832 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:06:40,833 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=true, 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;@78795542, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:06:40,833 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:06:40,963 INFO L130 PetriNetUnfolder]: 560/1683 cut-off events. [2023-09-01 11:06:40,963 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-09-01 11:06:40,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:06:40,963 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:06:40,964 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:06:40,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:06:40,964 INFO L85 PathProgramCache]: Analyzing trace with hash -742386210, now seen corresponding path program 1 times [2023-09-01 11:06:40,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:06:40,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499571054] [2023-09-01 11:06:40,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:06:40,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:06:40,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:06:40,980 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:06:40,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:06:40,997 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:06:40,997 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:06:40,997 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:06:40,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 11:06:40,997 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:06:40,998 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:06:40,998 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:06:40,998 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 11:06:41,026 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 11:06:41,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 498 places, 567 transitions, 1394 flow [2023-09-01 11:07:23,891 INFO L130 PetriNetUnfolder]: 53396/160692 cut-off events. [2023-09-01 11:07:23,891 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 11:07:34,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214071 conditions, 160692 events. 53396/160692 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2609. Compared 2173229 event pairs, 36879 based on Foata normal form. 0/144146 useless extension candidates. Maximal degree in co-relation 103369. Up to 53248 conditions per place. [2023-09-01 11:07:34,234 INFO L82 GeneralOperation]: Start removeDead. Operand has 498 places, 567 transitions, 1394 flow [2023-09-01 11:07:37,387 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 498 places, 567 transitions, 1394 flow [2023-09-01 11:07:37,387 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:07:37,387 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 498 places, 567 transitions, 1394 flow [2023-09-01 11:07:37,387 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 498 places, 567 transitions, 1394 flow [2023-09-01 11:07:37,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 498 places, 567 transitions, 1394 flow [2023-09-01 11:08:19,455 INFO L130 PetriNetUnfolder]: 53396/160692 cut-off events. [2023-09-01 11:08:19,456 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 11:08:29,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214071 conditions, 160692 events. 53396/160692 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2609. Compared 2173229 event pairs, 36879 based on Foata normal form. 0/144146 useless extension candidates. Maximal degree in co-relation 103369. Up to 53248 conditions per place. [2023-09-01 11:08:45,141 INFO L119 LiptonReduction]: Number of co-enabled transitions 249340 [2023-09-01 11:08:49,657 INFO L134 LiptonReduction]: Checked pairs total: 590721 [2023-09-01 11:08:49,658 INFO L136 LiptonReduction]: Total number of compositions: 375 [2023-09-01 11:08:49,659 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:08:49,659 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=true, 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;@78795542, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:08:49,659 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:08:49,872 INFO L130 PetriNetUnfolder]: 913/2530 cut-off events. [2023-09-01 11:08:49,872 INFO L131 PetriNetUnfolder]: For 1672/1672 co-relation queries the response was YES. [2023-09-01 11:08:49,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:08:49,872 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:08:49,873 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:08:49,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:08:49,873 INFO L85 PathProgramCache]: Analyzing trace with hash 999933196, now seen corresponding path program 1 times [2023-09-01 11:08:49,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:08:49,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564297843] [2023-09-01 11:08:49,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:08:49,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:08:49,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:08:49,890 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:08:49,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:08:49,909 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:08:49,909 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:08:49,909 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:08:49,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 11:08:49,909 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:08:49,910 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:08:49,910 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:08:49,910 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-09-01 11:08:49,942 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-09-01 11:08:49,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 530 places, 604 transitions, 1502 flow