./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows 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_61-invariant_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3465c34fa1c26a5c7a3494350123ab41e5828c33cb08ac3f67b81737d460e559 --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 06:53:13,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 06:53:13,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 06:53:13,557 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 06:53:13,567 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 06:53:13,568 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 06:53:13,571 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 06:53:13,575 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 06:53:13,576 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 06:53:13,578 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 06:53:13,579 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 06:53:13,580 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 06:53:13,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 06:53:13,584 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 06:53:13,585 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 06:53:13,587 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 06:53:13,589 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 06:53:13,594 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 06:53:13,595 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 06:53:13,597 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 06:53:13,598 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 06:53:13,599 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 06:53:13,600 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 06:53:13,600 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 06:53:13,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 06:53:13,604 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 06:53:13,604 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 06:53:13,605 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 06:53:13,605 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 06:53:13,606 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 06:53:13,606 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 06:53:13,607 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 06:53:13,607 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 06:53:13,608 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 06:53:13,609 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 06:53:13,609 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 06:53:13,610 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 06:53:13,610 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 06:53:13,610 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 06:53:13,611 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 06:53:13,612 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 06:53:13,619 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 06:53:13,658 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 06:53:13,658 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 06:53:13,659 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 06:53:13,659 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 06:53:13,660 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 06:53:13,661 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 06:53:13,661 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 06:53:13,661 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 06:53:13,661 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 06:53:13,662 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 06:53:13,662 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 06:53:13,663 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 06:53:13,663 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 06:53:13,663 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 06:53:13,663 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 06:53:13,663 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 06:53:13,663 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 06:53:13,664 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 06:53:13,664 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 06:53:13,664 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 06:53:13,664 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 06:53:13,664 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 06:53:13,664 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 06:53:13,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 06:53:13,665 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 06:53:13,665 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 06:53:13,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:53:13,665 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 06:53:13,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 06:53:13,666 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 06:53:13,666 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 06:53:13,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 06:53:13,666 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 06:53:13,667 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 06:53:13,667 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 06:53:13,667 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 06:53:13,667 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 06:53:13,667 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3465c34fa1c26a5c7a3494350123ab41e5828c33cb08ac3f67b81737d460e559 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 06:53:13,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 06:53:13,999 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 06:53:14,002 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 06:53:14,004 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 06:53:14,004 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 06:53:14,006 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_racing.i [2023-09-01 06:53:15,318 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 06:53:15,647 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 06:53:15,648 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_racing.i [2023-09-01 06:53:15,665 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b16a4cd28/6f78029b0e6d429cb922190be1be3ba6/FLAGfd3a3b9a0 [2023-09-01 06:53:15,681 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b16a4cd28/6f78029b0e6d429cb922190be1be3ba6 [2023-09-01 06:53:15,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 06:53:15,684 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 06:53:15,685 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 06:53:15,685 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 06:53:15,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 06:53:15,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:53:15" (1/1) ... [2023-09-01 06:53:15,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f90d7ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:53:15, skipping insertion in model container [2023-09-01 06:53:15,690 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:53:15" (1/1) ... [2023-09-01 06:53:15,696 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 06:53:15,725 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 06:53:16,019 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_racing.i[30176,30189] [2023-09-01 06:53:16,042 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:53:16,059 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 06:53:16,096 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_racing.i[30176,30189] [2023-09-01 06:53:16,113 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:53:16,162 INFO L208 MainTranslator]: Completed translation [2023-09-01 06:53:16,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:53:16 WrapperNode [2023-09-01 06:53:16,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 06:53:16,164 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 06:53:16,164 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 06:53:16,164 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 06:53:16,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:53:16" (1/1) ... [2023-09-01 06:53:16,198 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:53:16" (1/1) ... [2023-09-01 06:53:16,227 INFO L138 Inliner]: procedures = 170, calls = 32, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 104 [2023-09-01 06:53:16,227 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 06:53:16,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 06:53:16,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 06:53:16,229 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 06:53:16,237 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:53:16" (1/1) ... [2023-09-01 06:53:16,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:53:16" (1/1) ... [2023-09-01 06:53:16,253 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:53:16" (1/1) ... [2023-09-01 06:53:16,254 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:53:16" (1/1) ... [2023-09-01 06:53:16,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:53:16" (1/1) ... [2023-09-01 06:53:16,269 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:53:16" (1/1) ... [2023-09-01 06:53:16,272 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:53:16" (1/1) ... [2023-09-01 06:53:16,281 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:53:16" (1/1) ... [2023-09-01 06:53:16,283 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 06:53:16,287 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 06:53:16,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 06:53:16,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 06:53:16,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:53:16" (1/1) ... [2023-09-01 06:53:16,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:53:16,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:53:16,330 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 06:53:16,346 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 06:53:16,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 06:53:16,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 06:53:16,371 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 06:53:16,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 06:53:16,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 06:53:16,371 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 06:53:16,371 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 06:53:16,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 06:53:16,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 06:53:16,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 06:53:16,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 06:53:16,374 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 06:53:16,530 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 06:53:16,532 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 06:53:16,794 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 06:53:16,801 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 06:53:16,801 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-09-01 06:53:16,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:53:16 BoogieIcfgContainer [2023-09-01 06:53:16,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 06:53:16,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 06:53:16,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 06:53:16,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 06:53:16,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 06:53:15" (1/3) ... [2023-09-01 06:53:16,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4670ff61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:53:16, skipping insertion in model container [2023-09-01 06:53:16,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:53:16" (2/3) ... [2023-09-01 06:53:16,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4670ff61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:53:16, skipping insertion in model container [2023-09-01 06:53:16,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:53:16" (3/3) ... [2023-09-01 06:53:16,811 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_61-invariant_racing.i [2023-09-01 06:53:16,817 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 06:53:16,825 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 06:53:16,825 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-09-01 06:53:16,825 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 06:53:16,883 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 06:53:16,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 147 transitions, 302 flow [2023-09-01 06:53:16,989 INFO L130 PetriNetUnfolder]: 30/209 cut-off events. [2023-09-01 06:53:16,989 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 06:53:16,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 209 events. 30/209 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 663 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 110. Up to 6 conditions per place. [2023-09-01 06:53:16,996 INFO L82 GeneralOperation]: Start removeDead. Operand has 131 places, 147 transitions, 302 flow [2023-09-01 06:53:17,001 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 138 transitions, 281 flow [2023-09-01 06:53:17,006 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:53:17,028 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 123 places, 138 transitions, 281 flow [2023-09-01 06:53:17,031 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 123 places, 138 transitions, 281 flow [2023-09-01 06:53:17,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 138 transitions, 281 flow [2023-09-01 06:53:17,065 INFO L130 PetriNetUnfolder]: 29/200 cut-off events. [2023-09-01 06:53:17,066 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:53:17,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205 conditions, 200 events. 29/200 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 647 event pairs, 0 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 110. Up to 6 conditions per place. [2023-09-01 06:53:17,070 INFO L119 LiptonReduction]: Number of co-enabled transitions 5616 [2023-09-01 06:53:19,529 INFO L134 LiptonReduction]: Checked pairs total: 14467 [2023-09-01 06:53:19,530 INFO L136 LiptonReduction]: Total number of compositions: 107 [2023-09-01 06:53:19,550 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:53:19,557 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;@7475fcad, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:53:19,558 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:53:19,572 INFO L130 PetriNetUnfolder]: 8/44 cut-off events. [2023-09-01 06:53:19,572 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:53:19,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:53:19,573 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 06:53:19,574 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:53:19,578 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:53:19,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1020334724, now seen corresponding path program 1 times [2023-09-01 06:53:19,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:53:19,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361588997] [2023-09-01 06:53:19,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:53:19,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:53:19,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:53:19,678 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:53:19,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:53:19,714 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:53:19,716 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:53:19,717 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:53:19,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 06:53:19,719 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:53:19,721 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:53:19,722 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:53:19,722 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 06:53:19,741 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 06:53:19,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 188 transitions, 394 flow [2023-09-01 06:53:19,790 INFO L130 PetriNetUnfolder]: 51/348 cut-off events. [2023-09-01 06:53:19,790 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 06:53:19,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 348 events. 51/348 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1277 event pairs, 0 based on Foata normal form. 0/263 useless extension candidates. Maximal degree in co-relation 211. Up to 9 conditions per place. [2023-09-01 06:53:19,795 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 188 transitions, 394 flow [2023-09-01 06:53:19,798 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 188 transitions, 394 flow [2023-09-01 06:53:19,798 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:53:19,798 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 188 transitions, 394 flow [2023-09-01 06:53:19,798 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 188 transitions, 394 flow [2023-09-01 06:53:19,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 188 transitions, 394 flow [2023-09-01 06:53:19,833 INFO L130 PetriNetUnfolder]: 51/348 cut-off events. [2023-09-01 06:53:19,833 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 06:53:19,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 348 events. 51/348 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1277 event pairs, 0 based on Foata normal form. 0/263 useless extension candidates. Maximal degree in co-relation 211. Up to 9 conditions per place. [2023-09-01 06:53:19,848 INFO L119 LiptonReduction]: Number of co-enabled transitions 15756 [2023-09-01 06:53:22,379 INFO L134 LiptonReduction]: Checked pairs total: 41959 [2023-09-01 06:53:22,379 INFO L136 LiptonReduction]: Total number of compositions: 135 [2023-09-01 06:53:22,381 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:53:22,382 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;@7475fcad, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:53:22,383 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:53:22,390 INFO L130 PetriNetUnfolder]: 24/107 cut-off events. [2023-09-01 06:53:22,390 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 06:53:22,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:53:22,391 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 06:53:22,391 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:53:22,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:53:22,392 INFO L85 PathProgramCache]: Analyzing trace with hash 149735028, now seen corresponding path program 1 times [2023-09-01 06:53:22,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:53:22,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255421550] [2023-09-01 06:53:22,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:53:22,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:53:22,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:53:22,418 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:53:22,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:53:22,443 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:53:22,443 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:53:22,444 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:53:22,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 06:53:22,444 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:53:22,445 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:53:22,445 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:53:22,445 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 06:53:22,466 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 06:53:22,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 201 places, 229 transitions, 488 flow [2023-09-01 06:53:22,545 INFO L130 PetriNetUnfolder]: 77/526 cut-off events. [2023-09-01 06:53:22,545 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 06:53:22,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 554 conditions, 526 events. 77/526 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2100 event pairs, 1 based on Foata normal form. 0/397 useless extension candidates. Maximal degree in co-relation 356. Up to 16 conditions per place. [2023-09-01 06:53:22,555 INFO L82 GeneralOperation]: Start removeDead. Operand has 201 places, 229 transitions, 488 flow [2023-09-01 06:53:22,560 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 201 places, 229 transitions, 488 flow [2023-09-01 06:53:22,561 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:53:22,561 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 201 places, 229 transitions, 488 flow [2023-09-01 06:53:22,561 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 201 places, 229 transitions, 488 flow [2023-09-01 06:53:22,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 201 places, 229 transitions, 488 flow [2023-09-01 06:53:22,623 INFO L130 PetriNetUnfolder]: 77/526 cut-off events. [2023-09-01 06:53:22,624 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 06:53:22,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 554 conditions, 526 events. 77/526 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2100 event pairs, 1 based on Foata normal form. 0/397 useless extension candidates. Maximal degree in co-relation 356. Up to 16 conditions per place. [2023-09-01 06:53:22,651 INFO L119 LiptonReduction]: Number of co-enabled transitions 28548 [2023-09-01 06:53:25,215 INFO L134 LiptonReduction]: Checked pairs total: 96206 [2023-09-01 06:53:25,216 INFO L136 LiptonReduction]: Total number of compositions: 166 [2023-09-01 06:53:25,217 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:53:25,218 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;@7475fcad, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:53:25,219 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:53:25,230 INFO L130 PetriNetUnfolder]: 41/174 cut-off events. [2023-09-01 06:53:25,230 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 06:53:25,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:53:25,230 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 06:53:25,231 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:53:25,231 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:53:25,231 INFO L85 PathProgramCache]: Analyzing trace with hash -257348497, now seen corresponding path program 1 times [2023-09-01 06:53:25,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:53:25,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983661896] [2023-09-01 06:53:25,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:53:25,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:53:25,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:53:25,256 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:53:25,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:53:25,278 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:53:25,278 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:53:25,279 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:53:25,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 06:53:25,279 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:53:25,280 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:53:25,280 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:53:25,280 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 06:53:25,301 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 06:53:25,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 270 transitions, 584 flow [2023-09-01 06:53:25,413 INFO L130 PetriNetUnfolder]: 115/784 cut-off events. [2023-09-01 06:53:25,413 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 06:53:25,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 839 conditions, 784 events. 115/784 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3460 event pairs, 6 based on Foata normal form. 0/595 useless extension candidates. Maximal degree in co-relation 546. Up to 32 conditions per place. [2023-09-01 06:53:25,418 INFO L82 GeneralOperation]: Start removeDead. Operand has 236 places, 270 transitions, 584 flow [2023-09-01 06:53:25,423 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 236 places, 270 transitions, 584 flow [2023-09-01 06:53:25,424 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:53:25,424 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 236 places, 270 transitions, 584 flow [2023-09-01 06:53:25,424 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 236 places, 270 transitions, 584 flow [2023-09-01 06:53:25,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 270 transitions, 584 flow [2023-09-01 06:53:25,518 INFO L130 PetriNetUnfolder]: 115/784 cut-off events. [2023-09-01 06:53:25,518 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 06:53:25,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 839 conditions, 784 events. 115/784 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3460 event pairs, 6 based on Foata normal form. 0/595 useless extension candidates. Maximal degree in co-relation 546. Up to 32 conditions per place. [2023-09-01 06:53:25,552 INFO L119 LiptonReduction]: Number of co-enabled transitions 44616 [2023-09-01 06:53:28,302 INFO L134 LiptonReduction]: Checked pairs total: 155244 [2023-09-01 06:53:28,306 INFO L136 LiptonReduction]: Total number of compositions: 191 [2023-09-01 06:53:28,310 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:53:28,310 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;@7475fcad, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:53:28,310 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:53:28,333 INFO L130 PetriNetUnfolder]: 58/246 cut-off events. [2023-09-01 06:53:28,334 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2023-09-01 06:53:28,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:53:28,334 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 06:53:28,335 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:53:28,335 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:53:28,335 INFO L85 PathProgramCache]: Analyzing trace with hash -405846441, now seen corresponding path program 1 times [2023-09-01 06:53:28,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:53:28,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105940777] [2023-09-01 06:53:28,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:53:28,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:53:28,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:53:28,389 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:53:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:53:28,427 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:53:28,432 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:53:28,432 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:53:28,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 06:53:28,433 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:53:28,433 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:53:28,434 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:53:28,434 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 06:53:28,464 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 06:53:28,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 271 places, 311 transitions, 682 flow [2023-09-01 06:53:28,662 INFO L130 PetriNetUnfolder]: 181/1206 cut-off events. [2023-09-01 06:53:28,663 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 06:53:28,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1317 conditions, 1206 events. 181/1206 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 5924 event pairs, 23 based on Foata normal form. 0/925 useless extension candidates. Maximal degree in co-relation 829. Up to 80 conditions per place. [2023-09-01 06:53:28,675 INFO L82 GeneralOperation]: Start removeDead. Operand has 271 places, 311 transitions, 682 flow [2023-09-01 06:53:28,688 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 271 places, 311 transitions, 682 flow [2023-09-01 06:53:28,689 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:53:28,689 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 271 places, 311 transitions, 682 flow [2023-09-01 06:53:28,689 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 271 places, 311 transitions, 682 flow [2023-09-01 06:53:28,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 271 places, 311 transitions, 682 flow [2023-09-01 06:53:28,879 INFO L130 PetriNetUnfolder]: 181/1206 cut-off events. [2023-09-01 06:53:28,879 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 06:53:28,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1317 conditions, 1206 events. 181/1206 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 5924 event pairs, 23 based on Foata normal form. 0/925 useless extension candidates. Maximal degree in co-relation 829. Up to 80 conditions per place. [2023-09-01 06:53:28,929 INFO L119 LiptonReduction]: Number of co-enabled transitions 63960 [2023-09-01 06:53:31,830 INFO L134 LiptonReduction]: Checked pairs total: 255746 [2023-09-01 06:53:31,830 INFO L136 LiptonReduction]: Total number of compositions: 218 [2023-09-01 06:53:31,834 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:53:31,836 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;@7475fcad, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:53:31,836 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:53:31,860 INFO L130 PetriNetUnfolder]: 76/326 cut-off events. [2023-09-01 06:53:31,860 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2023-09-01 06:53:31,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:53:31,860 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:53:31,861 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:53:31,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:53:31,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1937805598, now seen corresponding path program 1 times [2023-09-01 06:53:31,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:53:31,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938527335] [2023-09-01 06:53:31,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:53:31,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:53:31,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:53:31,896 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:53:31,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:53:31,913 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:53:31,913 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:53:31,914 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:53:31,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 06:53:31,914 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:53:31,915 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:53:31,915 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:53:31,915 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 06:53:31,951 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 06:53:31,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 306 places, 352 transitions, 782 flow [2023-09-01 06:53:32,319 INFO L130 PetriNetUnfolder]: 311/1964 cut-off events. [2023-09-01 06:53:32,320 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 06:53:32,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2196 conditions, 1964 events. 311/1964 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 11511 event pairs, 72 based on Foata normal form. 0/1527 useless extension candidates. Maximal degree in co-relation 1305. Up to 192 conditions per place. [2023-09-01 06:53:32,349 INFO L82 GeneralOperation]: Start removeDead. Operand has 306 places, 352 transitions, 782 flow [2023-09-01 06:53:32,410 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 306 places, 352 transitions, 782 flow [2023-09-01 06:53:32,411 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:53:32,411 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 306 places, 352 transitions, 782 flow [2023-09-01 06:53:32,412 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 306 places, 352 transitions, 782 flow [2023-09-01 06:53:32,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 306 places, 352 transitions, 782 flow [2023-09-01 06:53:32,792 INFO L130 PetriNetUnfolder]: 311/1964 cut-off events. [2023-09-01 06:53:32,792 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 06:53:32,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2196 conditions, 1964 events. 311/1964 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 11511 event pairs, 72 based on Foata normal form. 0/1527 useless extension candidates. Maximal degree in co-relation 1305. Up to 192 conditions per place. [2023-09-01 06:53:32,928 INFO L119 LiptonReduction]: Number of co-enabled transitions 86580 [2023-09-01 06:53:36,237 INFO L134 LiptonReduction]: Checked pairs total: 350651 [2023-09-01 06:53:36,238 INFO L136 LiptonReduction]: Total number of compositions: 248 [2023-09-01 06:53:36,239 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:53:36,240 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;@7475fcad, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:53:36,240 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:53:36,274 INFO L130 PetriNetUnfolder]: 96/415 cut-off events. [2023-09-01 06:53:36,274 INFO L131 PetriNetUnfolder]: For 70/70 co-relation queries the response was YES. [2023-09-01 06:53:36,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:53:36,275 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:53:36,275 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:53:36,275 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:53:36,275 INFO L85 PathProgramCache]: Analyzing trace with hash 25138526, now seen corresponding path program 1 times [2023-09-01 06:53:36,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:53:36,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147899400] [2023-09-01 06:53:36,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:53:36,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:53:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:53:36,301 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:53:36,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:53:36,321 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:53:36,321 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:53:36,321 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:53:36,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 06:53:36,322 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:53:36,322 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:53:36,322 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:53:36,322 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 06:53:36,356 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 06:53:36,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 341 places, 393 transitions, 884 flow [2023-09-01 06:53:37,017 INFO L130 PetriNetUnfolder]: 585/3410 cut-off events. [2023-09-01 06:53:37,017 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 06:53:37,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3908 conditions, 3410 events. 585/3410 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 23756 event pairs, 201 based on Foata normal form. 0/2689 useless extension candidates. Maximal degree in co-relation 2182. Up to 448 conditions per place. [2023-09-01 06:53:37,054 INFO L82 GeneralOperation]: Start removeDead. Operand has 341 places, 393 transitions, 884 flow [2023-09-01 06:53:37,088 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 341 places, 393 transitions, 884 flow [2023-09-01 06:53:37,088 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:53:37,088 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 341 places, 393 transitions, 884 flow [2023-09-01 06:53:37,090 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 341 places, 393 transitions, 884 flow [2023-09-01 06:53:37,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 341 places, 393 transitions, 884 flow [2023-09-01 06:53:37,820 INFO L130 PetriNetUnfolder]: 585/3410 cut-off events. [2023-09-01 06:53:37,820 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 06:53:37,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3908 conditions, 3410 events. 585/3410 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 23756 event pairs, 201 based on Foata normal form. 0/2689 useless extension candidates. Maximal degree in co-relation 2182. Up to 448 conditions per place. [2023-09-01 06:53:38,009 INFO L119 LiptonReduction]: Number of co-enabled transitions 112476 [2023-09-01 06:53:41,445 INFO L134 LiptonReduction]: Checked pairs total: 414617 [2023-09-01 06:53:41,445 INFO L136 LiptonReduction]: Total number of compositions: 271 [2023-09-01 06:53:41,446 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:53:41,447 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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;@7475fcad, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:53:41,447 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:53:41,505 INFO L130 PetriNetUnfolder]: 120/522 cut-off events. [2023-09-01 06:53:41,505 INFO L131 PetriNetUnfolder]: For 113/113 co-relation queries the response was YES. [2023-09-01 06:53:41,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:53:41,506 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:53:41,506 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:53:41,506 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:53:41,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1981697095, now seen corresponding path program 1 times [2023-09-01 06:53:41,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:53:41,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151231733] [2023-09-01 06:53:41,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:53:41,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:53:41,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:53:41,530 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:53:41,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:53:41,549 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:53:41,549 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:53:41,549 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:53:41,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 06:53:41,550 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:53:41,550 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:53:41,551 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:53:41,551 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 06:53:41,581 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 06:53:41,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 376 places, 434 transitions, 988 flow [2023-09-01 06:53:42,895 INFO L130 PetriNetUnfolder]: 1179/6264 cut-off events. [2023-09-01 06:53:42,896 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 06:53:42,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7349 conditions, 6264 events. 1179/6264 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 51778 event pairs, 522 based on Foata normal form. 0/5003 useless extension candidates. Maximal degree in co-relation 3892. Up to 1024 conditions per place. [2023-09-01 06:53:42,996 INFO L82 GeneralOperation]: Start removeDead. Operand has 376 places, 434 transitions, 988 flow [2023-09-01 06:53:43,223 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 376 places, 434 transitions, 988 flow [2023-09-01 06:53:43,224 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:53:43,224 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 376 places, 434 transitions, 988 flow [2023-09-01 06:53:43,224 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 376 places, 434 transitions, 988 flow [2023-09-01 06:53:43,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 376 places, 434 transitions, 988 flow [2023-09-01 06:53:44,454 INFO L130 PetriNetUnfolder]: 1179/6264 cut-off events. [2023-09-01 06:53:44,454 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 06:53:44,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7349 conditions, 6264 events. 1179/6264 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 51778 event pairs, 522 based on Foata normal form. 0/5003 useless extension candidates. Maximal degree in co-relation 3892. Up to 1024 conditions per place. [2023-09-01 06:53:44,750 INFO L119 LiptonReduction]: Number of co-enabled transitions 141648 [2023-09-01 06:53:48,484 INFO L134 LiptonReduction]: Checked pairs total: 526683 [2023-09-01 06:53:48,484 INFO L136 LiptonReduction]: Total number of compositions: 294 [2023-09-01 06:53:48,486 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:53:48,486 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;@7475fcad, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:53:48,486 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:53:48,550 INFO L130 PetriNetUnfolder]: 152/658 cut-off events. [2023-09-01 06:53:48,550 INFO L131 PetriNetUnfolder]: For 177/177 co-relation queries the response was YES. [2023-09-01 06:53:48,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:53:48,550 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:53:48,551 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:53:48,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:53:48,551 INFO L85 PathProgramCache]: Analyzing trace with hash -243530496, now seen corresponding path program 1 times [2023-09-01 06:53:48,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:53:48,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143187462] [2023-09-01 06:53:48,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:53:48,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:53:48,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:53:48,574 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:53:48,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:53:48,594 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:53:48,595 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:53:48,595 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:53:48,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 06:53:48,595 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:53:48,596 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:53:48,596 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:53:48,596 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 06:53:48,625 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 06:53:48,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 411 places, 475 transitions, 1094 flow [2023-09-01 06:53:51,247 INFO L130 PetriNetUnfolder]: 2477/11998 cut-off events. [2023-09-01 06:53:51,248 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 06:53:51,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14375 conditions, 11998 events. 2477/11998 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 115844 event pairs, 1291 based on Foata normal form. 0/9685 useless extension candidates. Maximal degree in co-relation 7332. Up to 2304 conditions per place. [2023-09-01 06:53:51,423 INFO L82 GeneralOperation]: Start removeDead. Operand has 411 places, 475 transitions, 1094 flow [2023-09-01 06:53:51,641 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 411 places, 475 transitions, 1094 flow [2023-09-01 06:53:51,641 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:53:51,641 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 411 places, 475 transitions, 1094 flow [2023-09-01 06:53:51,642 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 411 places, 475 transitions, 1094 flow [2023-09-01 06:53:51,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 411 places, 475 transitions, 1094 flow [2023-09-01 06:53:54,251 INFO L130 PetriNetUnfolder]: 2477/11998 cut-off events. [2023-09-01 06:53:54,252 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 06:53:54,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14375 conditions, 11998 events. 2477/11998 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 115844 event pairs, 1291 based on Foata normal form. 0/9685 useless extension candidates. Maximal degree in co-relation 7332. Up to 2304 conditions per place. [2023-09-01 06:53:54,990 INFO L119 LiptonReduction]: Number of co-enabled transitions 174096 [2023-09-01 06:53:58,739 INFO L134 LiptonReduction]: Checked pairs total: 648434 [2023-09-01 06:53:58,739 INFO L136 LiptonReduction]: Total number of compositions: 321 [2023-09-01 06:53:58,740 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:53:58,741 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;@7475fcad, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:53:58,741 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:53:58,821 INFO L130 PetriNetUnfolder]: 198/837 cut-off events. [2023-09-01 06:53:58,821 INFO L131 PetriNetUnfolder]: For 272/272 co-relation queries the response was YES. [2023-09-01 06:53:58,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:53:58,821 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:53:58,821 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:53:58,822 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:53:58,822 INFO L85 PathProgramCache]: Analyzing trace with hash -165544609, now seen corresponding path program 1 times [2023-09-01 06:53:58,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:53:58,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729287475] [2023-09-01 06:53:58,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:53:58,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:53:58,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:53:58,861 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:53:58,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:53:58,892 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:53:58,892 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:53:58,892 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:53:58,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 06:53:58,893 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:53:58,893 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:53:58,893 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:53:58,893 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 06:53:58,926 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 06:53:58,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 446 places, 516 transitions, 1202 flow [2023-09-01 06:54:04,933 INFO L130 PetriNetUnfolder]: 5311/23620 cut-off events. [2023-09-01 06:54:04,934 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 06:54:05,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28826 conditions, 23620 events. 5311/23620 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 258350 event pairs, 3084 based on Foata normal form. 0/19231 useless extension candidates. Maximal degree in co-relation 14358. Up to 5120 conditions per place. [2023-09-01 06:54:05,339 INFO L82 GeneralOperation]: Start removeDead. Operand has 446 places, 516 transitions, 1202 flow [2023-09-01 06:54:05,796 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 446 places, 516 transitions, 1202 flow [2023-09-01 06:54:05,797 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:54:05,797 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 446 places, 516 transitions, 1202 flow [2023-09-01 06:54:05,797 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 446 places, 516 transitions, 1202 flow [2023-09-01 06:54:05,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 446 places, 516 transitions, 1202 flow [2023-09-01 06:54:12,425 INFO L130 PetriNetUnfolder]: 5311/23620 cut-off events. [2023-09-01 06:54:12,425 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 06:54:12,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28826 conditions, 23620 events. 5311/23620 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 258350 event pairs, 3084 based on Foata normal form. 0/19231 useless extension candidates. Maximal degree in co-relation 14358. Up to 5120 conditions per place. [2023-09-01 06:54:14,263 INFO L119 LiptonReduction]: Number of co-enabled transitions 209820 [2023-09-01 06:54:18,497 INFO L134 LiptonReduction]: Checked pairs total: 681581 [2023-09-01 06:54:18,497 INFO L136 LiptonReduction]: Total number of compositions: 343 [2023-09-01 06:54:18,501 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:54:18,502 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;@7475fcad, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:54:18,502 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:54:18,614 INFO L130 PetriNetUnfolder]: 267/1083 cut-off events. [2023-09-01 06:54:18,614 INFO L131 PetriNetUnfolder]: For 412/412 co-relation queries the response was YES. [2023-09-01 06:54:18,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:54:18,614 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:54:18,614 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:54:18,615 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:54:18,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1310615890, now seen corresponding path program 1 times [2023-09-01 06:54:18,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:54:18,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042604504] [2023-09-01 06:54:18,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:54:18,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:54:18,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:54:18,640 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:54:18,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:54:18,664 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:54:18,664 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:54:18,664 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:54:18,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 06:54:18,665 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:54:18,665 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:54:18,665 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:54:18,665 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 06:54:18,701 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 06:54:18,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 481 places, 557 transitions, 1312 flow [2023-09-01 06:54:31,956 INFO L130 PetriNetUnfolder]: 11473/47274 cut-off events. [2023-09-01 06:54:31,956 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 06:54:33,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58638 conditions, 47274 events. 11473/47274 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 578493 event pairs, 7181 based on Foata normal form. 0/38761 useless extension candidates. Maximal degree in co-relation 28809. Up to 11264 conditions per place. [2023-09-01 06:54:33,550 INFO L82 GeneralOperation]: Start removeDead. Operand has 481 places, 557 transitions, 1312 flow [2023-09-01 06:54:34,342 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 481 places, 557 transitions, 1312 flow [2023-09-01 06:54:34,342 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:54:34,342 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 481 places, 557 transitions, 1312 flow [2023-09-01 06:54:34,343 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 481 places, 557 transitions, 1312 flow [2023-09-01 06:54:34,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 481 places, 557 transitions, 1312 flow [2023-09-01 06:54:47,510 INFO L130 PetriNetUnfolder]: 11473/47274 cut-off events. [2023-09-01 06:54:47,511 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 06:54:49,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58638 conditions, 47274 events. 11473/47274 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 578493 event pairs, 7181 based on Foata normal form. 0/38761 useless extension candidates. Maximal degree in co-relation 28809. Up to 11264 conditions per place. [2023-09-01 06:54:52,374 INFO L119 LiptonReduction]: Number of co-enabled transitions 248820 [2023-09-01 06:54:56,541 INFO L134 LiptonReduction]: Checked pairs total: 824657 [2023-09-01 06:54:56,541 INFO L136 LiptonReduction]: Total number of compositions: 371 [2023-09-01 06:54:56,543 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:54:56,543 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;@7475fcad, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:54:56,543 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:54:56,695 INFO L130 PetriNetUnfolder]: 374/1433 cut-off events. [2023-09-01 06:54:56,696 INFO L131 PetriNetUnfolder]: For 619/619 co-relation queries the response was YES. [2023-09-01 06:54:56,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:54:56,696 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:54:56,696 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:54:56,697 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:54:56,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1835294137, now seen corresponding path program 1 times [2023-09-01 06:54:56,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:54:56,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3911674] [2023-09-01 06:54:56,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:54:56,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:54:56,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:54:56,725 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:54:56,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:54:56,749 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:54:56,750 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:54:56,750 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:54:56,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 06:54:56,750 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:54:56,751 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:54:56,751 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:54:56,752 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 06:54:56,785 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 06:54:56,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 516 places, 598 transitions, 1424 flow [2023-09-01 06:55:31,105 INFO L130 PetriNetUnfolder]: 24803/95504 cut-off events. [2023-09-01 06:55:31,106 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 06:55:35,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120195 conditions, 95504 events. 24803/95504 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1476. Compared 1285525 event pairs, 16398 based on Foata normal form. 0/78771 useless extension candidates. Maximal degree in co-relation 58621. Up to 24576 conditions per place. [2023-09-01 06:55:35,780 INFO L82 GeneralOperation]: Start removeDead. Operand has 516 places, 598 transitions, 1424 flow [2023-09-01 06:55:37,893 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 516 places, 598 transitions, 1424 flow [2023-09-01 06:55:37,894 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:55:37,894 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 516 places, 598 transitions, 1424 flow [2023-09-01 06:55:37,894 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 516 places, 598 transitions, 1424 flow [2023-09-01 06:55:37,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 516 places, 598 transitions, 1424 flow [2023-09-01 06:56:08,285 INFO L130 PetriNetUnfolder]: 24803/95504 cut-off events. [2023-09-01 06:56:08,285 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 06:56:13,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120195 conditions, 95504 events. 24803/95504 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1476. Compared 1285525 event pairs, 16398 based on Foata normal form. 0/78771 useless extension candidates. Maximal degree in co-relation 58621. Up to 24576 conditions per place. [2023-09-01 06:56:23,585 INFO L119 LiptonReduction]: Number of co-enabled transitions 291096 [2023-09-01 06:56:28,223 INFO L134 LiptonReduction]: Checked pairs total: 1107718 [2023-09-01 06:56:28,223 INFO L136 LiptonReduction]: Total number of compositions: 396 [2023-09-01 06:56:28,224 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:56:28,225 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;@7475fcad, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:56:28,225 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:56:28,441 INFO L130 PetriNetUnfolder]: 543/1942 cut-off events. [2023-09-01 06:56:28,441 INFO L131 PetriNetUnfolder]: For 927/927 co-relation queries the response was YES. [2023-09-01 06:56:28,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:56:28,441 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 06:56:28,442 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:56:28,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:56:28,442 INFO L85 PathProgramCache]: Analyzing trace with hash -411436682, now seen corresponding path program 1 times [2023-09-01 06:56:28,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:56:28,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60880055] [2023-09-01 06:56:28,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:56:28,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:56:28,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:56:28,490 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:56:28,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:56:28,516 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:56:28,516 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:56:28,516 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:56:28,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 06:56:28,517 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:56:28,517 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:56:28,517 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:56:28,518 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 06:56:28,553 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 06:56:28,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 551 places, 639 transitions, 1538 flow [2023-09-01 06:57:38,091 INFO L130 PetriNetUnfolder]: 53493/193910 cut-off events. [2023-09-01 06:57:38,091 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 06:57:48,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247289 conditions, 193910 events. 53493/193910 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2901. Compared 2840869 event pairs, 36879 based on Foata normal form. 0/160765 useless extension candidates. Maximal degree in co-relation 120178. Up to 53248 conditions per place. [2023-09-01 06:57:48,778 INFO L82 GeneralOperation]: Start removeDead. Operand has 551 places, 639 transitions, 1538 flow [2023-09-01 06:57:53,730 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 551 places, 639 transitions, 1538 flow [2023-09-01 06:57:53,730 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:57:53,730 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 551 places, 639 transitions, 1538 flow [2023-09-01 06:57:53,731 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 551 places, 639 transitions, 1538 flow [2023-09-01 06:57:53,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 551 places, 639 transitions, 1538 flow [2023-09-01 06:59:03,002 INFO L130 PetriNetUnfolder]: 53493/193910 cut-off events. [2023-09-01 06:59:03,002 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 06:59:14,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247289 conditions, 193910 events. 53493/193910 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2901. Compared 2840869 event pairs, 36879 based on Foata normal form. 0/160765 useless extension candidates. Maximal degree in co-relation 120178. Up to 53248 conditions per place. [2023-09-01 06:59:41,551 INFO L119 LiptonReduction]: Number of co-enabled transitions 336648 [2023-09-01 06:59:46,466 INFO L134 LiptonReduction]: Checked pairs total: 1298085 [2023-09-01 06:59:46,466 INFO L136 LiptonReduction]: Total number of compositions: 429 [2023-09-01 06:59:46,468 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:59:46,469 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;@7475fcad, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:59:46,469 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:59:46,774 INFO L130 PetriNetUnfolder]: 811/2694 cut-off events. [2023-09-01 06:59:46,774 INFO L131 PetriNetUnfolder]: For 1387/1387 co-relation queries the response was YES. [2023-09-01 06:59:46,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:59:46,775 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 06:59:46,775 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:59:46,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:59:46,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1167679005, now seen corresponding path program 1 times [2023-09-01 06:59:46,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:59:46,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237864354] [2023-09-01 06:59:46,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:59:46,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:59:46,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:59:46,821 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:59:46,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:59:46,853 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:59:46,853 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:59:46,854 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:59:46,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 06:59:46,854 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:59:46,855 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:59:46,855 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:59:46,855 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-09-01 06:59:46,900 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-09-01 06:59:46,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 586 places, 680 transitions, 1654 flow