./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-ext/01b_inc.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) 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/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread-ext/01b_inc.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a50cd99e32ae608752174b749acce795b64973c8c13edb78d7146b3ab3630fc9 --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 [2023-08-31 22:26:59,139 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 22:26:59,141 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 22:26:59,165 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 22:26:59,165 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 22:26:59,166 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 22:26:59,168 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 22:26:59,170 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 22:26:59,171 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 22:26:59,172 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 22:26:59,173 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 22:26:59,175 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 22:26:59,175 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 22:26:59,176 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 22:26:59,177 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 22:26:59,178 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 22:26:59,179 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 22:26:59,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 22:26:59,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 22:26:59,183 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 22:26:59,185 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 22:26:59,186 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 22:26:59,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 22:26:59,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 22:26:59,192 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 22:26:59,192 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 22:26:59,192 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 22:26:59,193 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 22:26:59,194 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 22:26:59,195 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 22:26:59,195 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 22:26:59,196 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 22:26:59,196 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 22:26:59,197 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 22:26:59,198 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 22:26:59,198 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 22:26:59,199 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 22:26:59,199 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 22:26:59,200 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 22:26:59,201 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 22:26:59,201 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 22:26:59,202 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-31 22:26:59,224 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 22:26:59,225 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 22:26:59,225 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 22:26:59,225 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 22:26:59,226 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 22:26:59,226 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 22:26:59,227 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 22:26:59,227 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 22:26:59,227 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 22:26:59,227 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 22:26:59,228 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 22:26:59,228 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 22:26:59,228 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 22:26:59,228 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 22:26:59,228 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 22:26:59,229 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-31 22:26:59,229 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-31 22:26:59,229 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-31 22:26:59,229 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 22:26:59,229 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-31 22:26:59,230 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 22:26:59,230 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 22:26:59,230 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 22:26:59,233 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 22:26:59,234 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 22:26:59,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 22:26:59,234 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 22:26:59,234 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 22:26:59,235 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 22:26:59,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 22:26:59,235 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 22:26:59,235 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 22:26:59,235 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 22:26:59,236 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 22:26:59,236 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a50cd99e32ae608752174b749acce795b64973c8c13edb78d7146b3ab3630fc9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 22:26:59,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 22:26:59,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 22:26:59,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 22:26:59,604 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 22:26:59,604 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 22:26:59,606 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/01b_inc.i [2023-08-31 22:27:00,797 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 22:27:01,026 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 22:27:01,027 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/01b_inc.i [2023-08-31 22:27:01,039 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db7a9810b/0f2da10bb5c14248924e0a354403dd3a/FLAG4422959d5 [2023-08-31 22:27:01,052 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db7a9810b/0f2da10bb5c14248924e0a354403dd3a [2023-08-31 22:27:01,054 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 22:27:01,055 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 22:27:01,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 22:27:01,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 22:27:01,060 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 22:27:01,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 10:27:01" (1/1) ... [2023-08-31 22:27:01,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61aec68a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:27:01, skipping insertion in model container [2023-08-31 22:27:01,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 10:27:01" (1/1) ... [2023-08-31 22:27:01,067 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 22:27:01,121 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 22:27:01,251 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-31 22:27:01,380 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/01b_inc.i[31005,31018] [2023-08-31 22:27:01,391 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 22:27:01,402 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 22:27:01,428 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-31 22:27:01,448 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/01b_inc.i[31005,31018] [2023-08-31 22:27:01,459 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 22:27:01,506 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 22:27:01,507 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 22:27:01,507 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 22:27:01,513 INFO L208 MainTranslator]: Completed translation [2023-08-31 22:27:01,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:27:01 WrapperNode [2023-08-31 22:27:01,514 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 22:27:01,515 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 22:27:01,515 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 22:27:01,515 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 22:27:01,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:27:01" (1/1) ... [2023-08-31 22:27:01,551 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:27:01" (1/1) ... [2023-08-31 22:27:01,574 INFO L138 Inliner]: procedures = 173, calls = 20, calls flagged for inlining = 7, calls inlined = 8, statements flattened = 62 [2023-08-31 22:27:01,575 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 22:27:01,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 22:27:01,576 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 22:27:01,576 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 22:27:01,583 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:27:01" (1/1) ... [2023-08-31 22:27:01,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:27:01" (1/1) ... [2023-08-31 22:27:01,589 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:27:01" (1/1) ... [2023-08-31 22:27:01,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:27:01" (1/1) ... [2023-08-31 22:27:01,602 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:27:01" (1/1) ... [2023-08-31 22:27:01,606 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:27:01" (1/1) ... [2023-08-31 22:27:01,613 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:27:01" (1/1) ... [2023-08-31 22:27:01,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:27:01" (1/1) ... [2023-08-31 22:27:01,620 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 22:27:01,625 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 22:27:01,625 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 22:27:01,625 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 22:27:01,626 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:27:01" (1/1) ... [2023-08-31 22:27:01,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 22:27:01,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 22:27:01,658 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) [2023-08-31 22:27:01,681 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 [2023-08-31 22:27:01,694 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-31 22:27:01,694 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-31 22:27:01,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 22:27:01,694 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 22:27:01,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 22:27:01,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 22:27:01,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 22:27:01,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 22:27:01,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 22:27:01,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 22:27:01,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 22:27:01,696 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 22:27:01,823 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 22:27:01,825 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 22:27:01,984 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 22:27:02,062 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 22:27:02,068 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-31 22:27:02,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 10:27:02 BoogieIcfgContainer [2023-08-31 22:27:02,070 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 22:27:02,072 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 22:27:02,072 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 22:27:02,075 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 22:27:02,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 10:27:01" (1/3) ... [2023-08-31 22:27:02,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fff10f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 10:27:02, skipping insertion in model container [2023-08-31 22:27:02,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:27:01" (2/3) ... [2023-08-31 22:27:02,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fff10f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 10:27:02, skipping insertion in model container [2023-08-31 22:27:02,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 10:27:02" (3/3) ... [2023-08-31 22:27:02,078 INFO L112 eAbstractionObserver]: Analyzing ICFG 01b_inc.i [2023-08-31 22:27:02,094 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 22:27:02,095 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-31 22:27:02,095 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 22:27:02,168 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:27:02,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 46 transitions, 97 flow [2023-08-31 22:27:02,234 INFO L130 PetriNetUnfolder]: 3/61 cut-off events. [2023-08-31 22:27:02,234 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 22:27:02,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 61 events. 3/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 119 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 31. Up to 4 conditions per place. [2023-08-31 22:27:02,238 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 46 transitions, 97 flow [2023-08-31 22:27:02,241 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 46 transitions, 97 flow [2023-08-31 22:27:02,244 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:27:02,252 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 47 places, 46 transitions, 97 flow [2023-08-31 22:27:02,255 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 47 places, 46 transitions, 97 flow [2023-08-31 22:27:02,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 46 transitions, 97 flow [2023-08-31 22:27:02,274 INFO L130 PetriNetUnfolder]: 3/61 cut-off events. [2023-08-31 22:27:02,277 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 22:27:02,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 61 events. 3/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 119 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 31. Up to 4 conditions per place. [2023-08-31 22:27:02,280 INFO L119 LiptonReduction]: Number of co-enabled transitions 504 [2023-08-31 22:27:04,242 INFO L134 LiptonReduction]: Checked pairs total: 456 [2023-08-31 22:27:04,242 INFO L136 LiptonReduction]: Total number of compositions: 45 [2023-08-31 22:27:04,254 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:27:04,259 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:27:04,260 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:27:04,264 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-08-31 22:27:04,264 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 22:27:04,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:27:04,265 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-31 22:27:04,265 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:27:04,269 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:27:04,269 INFO L85 PathProgramCache]: Analyzing trace with hash -847831811, now seen corresponding path program 1 times [2023-08-31 22:27:04,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:27:04,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708233674] [2023-08-31 22:27:04,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:27:04,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:27:04,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:27:04,424 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:27:04,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:27:04,455 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:27:04,457 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:27:04,458 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:27:04,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 22:27:04,460 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:27:04,462 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:27:04,463 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:27:04,463 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-31 22:27:04,478 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:27:04,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 61 transitions, 134 flow [2023-08-31 22:27:04,494 INFO L130 PetriNetUnfolder]: 5/93 cut-off events. [2023-08-31 22:27:04,495 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 22:27:04,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 93 events. 5/93 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 213 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 62. Up to 6 conditions per place. [2023-08-31 22:27:04,496 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 61 transitions, 134 flow [2023-08-31 22:27:04,497 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 61 transitions, 134 flow [2023-08-31 22:27:04,497 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:27:04,497 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 61 transitions, 134 flow [2023-08-31 22:27:04,497 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 61 transitions, 134 flow [2023-08-31 22:27:04,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 61 transitions, 134 flow [2023-08-31 22:27:04,510 INFO L130 PetriNetUnfolder]: 5/93 cut-off events. [2023-08-31 22:27:04,510 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 22:27:04,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 93 events. 5/93 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 213 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 62. Up to 6 conditions per place. [2023-08-31 22:27:04,512 INFO L119 LiptonReduction]: Number of co-enabled transitions 1428 [2023-08-31 22:27:05,561 INFO L134 LiptonReduction]: Checked pairs total: 4514 [2023-08-31 22:27:05,561 INFO L136 LiptonReduction]: Total number of compositions: 39 [2023-08-31 22:27:05,563 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:27:05,564 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:27:05,564 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:27:05,570 INFO L130 PetriNetUnfolder]: 1/36 cut-off events. [2023-08-31 22:27:05,570 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 22:27:05,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:27:05,570 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-31 22:27:05,571 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:27:05,571 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:27:05,571 INFO L85 PathProgramCache]: Analyzing trace with hash -820594224, now seen corresponding path program 1 times [2023-08-31 22:27:05,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:27:05,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585316242] [2023-08-31 22:27:05,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:27:05,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:27:05,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:27:05,593 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:27:05,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:27:05,609 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:27:05,609 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:27:05,609 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:27:05,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 22:27:05,610 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:27:05,611 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:27:05,611 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:27:05,611 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-31 22:27:05,626 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:27:05,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 76 transitions, 173 flow [2023-08-31 22:27:05,643 INFO L130 PetriNetUnfolder]: 7/125 cut-off events. [2023-08-31 22:27:05,643 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-31 22:27:05,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 125 events. 7/125 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 321 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 97. Up to 8 conditions per place. [2023-08-31 22:27:05,644 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 76 transitions, 173 flow [2023-08-31 22:27:05,645 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 76 transitions, 173 flow [2023-08-31 22:27:05,645 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:27:05,646 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 76 transitions, 173 flow [2023-08-31 22:27:05,646 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 76 transitions, 173 flow [2023-08-31 22:27:05,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 76 transitions, 173 flow [2023-08-31 22:27:05,659 INFO L130 PetriNetUnfolder]: 7/125 cut-off events. [2023-08-31 22:27:05,659 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-31 22:27:05,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 125 events. 7/125 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 321 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 97. Up to 8 conditions per place. [2023-08-31 22:27:05,662 INFO L119 LiptonReduction]: Number of co-enabled transitions 2772 [2023-08-31 22:27:06,950 INFO L134 LiptonReduction]: Checked pairs total: 10276 [2023-08-31 22:27:06,951 INFO L136 LiptonReduction]: Total number of compositions: 45 [2023-08-31 22:27:06,952 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:27:06,953 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:27:06,953 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:27:06,959 INFO L130 PetriNetUnfolder]: 2/53 cut-off events. [2023-08-31 22:27:06,960 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-31 22:27:06,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:27:06,960 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-31 22:27:06,960 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:27:06,961 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:27:06,961 INFO L85 PathProgramCache]: Analyzing trace with hash -743523345, now seen corresponding path program 1 times [2023-08-31 22:27:06,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:27:06,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660525192] [2023-08-31 22:27:06,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:27:06,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:27:06,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:27:06,982 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:27:06,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:27:07,001 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:27:07,002 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:27:07,002 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:27:07,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 22:27:07,002 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:27:07,003 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:27:07,003 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:27:07,003 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-31 22:27:07,023 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:27:07,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 91 transitions, 214 flow [2023-08-31 22:27:07,042 INFO L130 PetriNetUnfolder]: 9/157 cut-off events. [2023-08-31 22:27:07,042 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-31 22:27:07,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 157 events. 9/157 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 407 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 133. Up to 10 conditions per place. [2023-08-31 22:27:07,044 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 91 transitions, 214 flow [2023-08-31 22:27:07,045 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 91 transitions, 214 flow [2023-08-31 22:27:07,045 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:27:07,045 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 91 transitions, 214 flow [2023-08-31 22:27:07,045 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 91 transitions, 214 flow [2023-08-31 22:27:07,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 91 transitions, 214 flow [2023-08-31 22:27:07,067 INFO L130 PetriNetUnfolder]: 9/157 cut-off events. [2023-08-31 22:27:07,067 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-31 22:27:07,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 157 events. 9/157 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 407 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 133. Up to 10 conditions per place. [2023-08-31 22:27:07,072 INFO L119 LiptonReduction]: Number of co-enabled transitions 4536 [2023-08-31 22:27:08,496 INFO L134 LiptonReduction]: Checked pairs total: 16958 [2023-08-31 22:27:08,497 INFO L136 LiptonReduction]: Total number of compositions: 51 [2023-08-31 22:27:08,499 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:27:08,500 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:27:08,500 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:27:08,507 INFO L130 PetriNetUnfolder]: 3/70 cut-off events. [2023-08-31 22:27:08,507 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-31 22:27:08,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:27:08,508 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-31 22:27:08,508 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:27:08,508 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:27:08,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1349310829, now seen corresponding path program 1 times [2023-08-31 22:27:08,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:27:08,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151821551] [2023-08-31 22:27:08,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:27:08,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:27:08,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:27:08,530 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:27:08,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:27:08,554 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:27:08,555 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:27:08,558 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:27:08,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 22:27:08,560 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:27:08,561 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:27:08,561 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:27:08,561 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-31 22:27:08,584 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:27:08,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 106 transitions, 257 flow [2023-08-31 22:27:08,603 INFO L130 PetriNetUnfolder]: 11/189 cut-off events. [2023-08-31 22:27:08,603 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-31 22:27:08,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220 conditions, 189 events. 11/189 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 510 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 170. Up to 12 conditions per place. [2023-08-31 22:27:08,605 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 106 transitions, 257 flow [2023-08-31 22:27:08,606 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 106 transitions, 257 flow [2023-08-31 22:27:08,606 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:27:08,607 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 111 places, 106 transitions, 257 flow [2023-08-31 22:27:08,607 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 111 places, 106 transitions, 257 flow [2023-08-31 22:27:08,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 106 transitions, 257 flow [2023-08-31 22:27:08,626 INFO L130 PetriNetUnfolder]: 11/189 cut-off events. [2023-08-31 22:27:08,626 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-31 22:27:08,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220 conditions, 189 events. 11/189 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 510 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 170. Up to 12 conditions per place. [2023-08-31 22:27:08,631 INFO L119 LiptonReduction]: Number of co-enabled transitions 6720 [2023-08-31 22:27:10,136 INFO L134 LiptonReduction]: Checked pairs total: 30428 [2023-08-31 22:27:10,136 INFO L136 LiptonReduction]: Total number of compositions: 57 [2023-08-31 22:27:10,138 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:27:10,138 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:27:10,139 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:27:10,146 INFO L130 PetriNetUnfolder]: 4/87 cut-off events. [2023-08-31 22:27:10,146 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-31 22:27:10,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:27:10,147 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:27:10,147 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:27:10,147 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:27:10,147 INFO L85 PathProgramCache]: Analyzing trace with hash 865524255, now seen corresponding path program 1 times [2023-08-31 22:27:10,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:27:10,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688674321] [2023-08-31 22:27:10,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:27:10,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:27:10,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:27:10,174 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:27:10,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:27:10,192 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:27:10,192 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:27:10,192 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:27:10,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 22:27:10,193 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:27:10,193 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:27:10,193 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:27:10,194 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-31 22:27:10,219 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:27:10,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 121 transitions, 302 flow [2023-08-31 22:27:10,242 INFO L130 PetriNetUnfolder]: 13/221 cut-off events. [2023-08-31 22:27:10,242 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-31 22:27:10,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 221 events. 13/221 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 626 event pairs, 0 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 209. Up to 14 conditions per place. [2023-08-31 22:27:10,244 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 121 transitions, 302 flow [2023-08-31 22:27:10,245 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 121 transitions, 302 flow [2023-08-31 22:27:10,245 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:27:10,246 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 127 places, 121 transitions, 302 flow [2023-08-31 22:27:10,246 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 127 places, 121 transitions, 302 flow [2023-08-31 22:27:10,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 121 transitions, 302 flow [2023-08-31 22:27:10,275 INFO L130 PetriNetUnfolder]: 13/221 cut-off events. [2023-08-31 22:27:10,276 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-31 22:27:10,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 221 events. 13/221 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 626 event pairs, 0 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 209. Up to 14 conditions per place. [2023-08-31 22:27:10,284 INFO L119 LiptonReduction]: Number of co-enabled transitions 9324 [2023-08-31 22:27:12,066 INFO L134 LiptonReduction]: Checked pairs total: 43933 [2023-08-31 22:27:12,066 INFO L136 LiptonReduction]: Total number of compositions: 63 [2023-08-31 22:27:12,068 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:27:12,068 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:27:12,068 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:27:12,078 INFO L130 PetriNetUnfolder]: 5/104 cut-off events. [2023-08-31 22:27:12,078 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-31 22:27:12,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:27:12,079 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:27:12,079 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:27:12,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:27:12,080 INFO L85 PathProgramCache]: Analyzing trace with hash 962725765, now seen corresponding path program 1 times [2023-08-31 22:27:12,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:27:12,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848419283] [2023-08-31 22:27:12,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:27:12,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:27:12,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:27:12,127 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:27:12,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:27:12,151 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:27:12,151 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:27:12,151 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:27:12,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 22:27:12,152 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:27:12,152 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:27:12,153 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:27:12,153 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-31 22:27:12,190 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:27:12,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 136 transitions, 349 flow [2023-08-31 22:27:12,250 INFO L130 PetriNetUnfolder]: 15/253 cut-off events. [2023-08-31 22:27:12,250 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-31 22:27:12,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 253 events. 15/253 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 713 event pairs, 0 based on Foata normal form. 0/199 useless extension candidates. Maximal degree in co-relation 250. Up to 16 conditions per place. [2023-08-31 22:27:12,252 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 136 transitions, 349 flow [2023-08-31 22:27:12,253 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 136 transitions, 349 flow [2023-08-31 22:27:12,254 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:27:12,254 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 143 places, 136 transitions, 349 flow [2023-08-31 22:27:12,254 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 143 places, 136 transitions, 349 flow [2023-08-31 22:27:12,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 136 transitions, 349 flow [2023-08-31 22:27:12,285 INFO L130 PetriNetUnfolder]: 15/253 cut-off events. [2023-08-31 22:27:12,285 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-31 22:27:12,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 253 events. 15/253 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 713 event pairs, 0 based on Foata normal form. 0/199 useless extension candidates. Maximal degree in co-relation 250. Up to 16 conditions per place. [2023-08-31 22:27:12,297 INFO L119 LiptonReduction]: Number of co-enabled transitions 12348 [2023-08-31 22:27:14,182 INFO L134 LiptonReduction]: Checked pairs total: 59214 [2023-08-31 22:27:14,182 INFO L136 LiptonReduction]: Total number of compositions: 69 [2023-08-31 22:27:14,183 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:27:14,184 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:27:14,184 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:27:14,197 INFO L130 PetriNetUnfolder]: 6/121 cut-off events. [2023-08-31 22:27:14,197 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-31 22:27:14,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:27:14,198 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:27:14,198 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:27:14,198 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:27:14,198 INFO L85 PathProgramCache]: Analyzing trace with hash -527317777, now seen corresponding path program 1 times [2023-08-31 22:27:14,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:27:14,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769324571] [2023-08-31 22:27:14,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:27:14,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:27:14,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:27:14,253 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:27:14,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:27:14,286 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:27:14,287 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:27:14,287 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:27:14,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 22:27:14,287 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:27:14,288 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:27:14,288 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:27:14,288 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-31 22:27:14,320 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:27:14,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 151 transitions, 398 flow [2023-08-31 22:27:14,355 INFO L130 PetriNetUnfolder]: 17/285 cut-off events. [2023-08-31 22:27:14,355 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-31 22:27:14,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346 conditions, 285 events. 17/285 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 830 event pairs, 0 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 292. Up to 18 conditions per place. [2023-08-31 22:27:14,358 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 151 transitions, 398 flow [2023-08-31 22:27:14,360 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 151 transitions, 398 flow [2023-08-31 22:27:14,360 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:27:14,360 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 159 places, 151 transitions, 398 flow [2023-08-31 22:27:14,361 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 159 places, 151 transitions, 398 flow [2023-08-31 22:27:14,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 151 transitions, 398 flow [2023-08-31 22:27:14,389 INFO L130 PetriNetUnfolder]: 17/285 cut-off events. [2023-08-31 22:27:14,389 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-31 22:27:14,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346 conditions, 285 events. 17/285 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 830 event pairs, 0 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 292. Up to 18 conditions per place. [2023-08-31 22:27:14,397 INFO L119 LiptonReduction]: Number of co-enabled transitions 15792 [2023-08-31 22:27:16,447 INFO L134 LiptonReduction]: Checked pairs total: 66377 [2023-08-31 22:27:16,448 INFO L136 LiptonReduction]: Total number of compositions: 75 [2023-08-31 22:27:16,449 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:27:16,450 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:27:16,450 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:27:16,470 INFO L130 PetriNetUnfolder]: 7/138 cut-off events. [2023-08-31 22:27:16,470 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-31 22:27:16,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:27:16,471 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:27:16,471 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:27:16,471 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:27:16,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1014350794, now seen corresponding path program 1 times [2023-08-31 22:27:16,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:27:16,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115996989] [2023-08-31 22:27:16,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:27:16,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:27:16,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:27:16,497 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:27:16,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:27:16,527 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:27:16,528 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:27:16,528 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:27:16,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 22:27:16,529 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:27:16,532 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:27:16,535 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:27:16,535 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-31 22:27:16,564 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:27:16,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 166 transitions, 449 flow [2023-08-31 22:27:16,601 INFO L130 PetriNetUnfolder]: 19/317 cut-off events. [2023-08-31 22:27:16,602 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-08-31 22:27:16,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 390 conditions, 317 events. 19/317 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 922 event pairs, 0 based on Foata normal form. 0/249 useless extension candidates. Maximal degree in co-relation 335. Up to 20 conditions per place. [2023-08-31 22:27:16,604 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 166 transitions, 449 flow [2023-08-31 22:27:16,606 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 175 places, 166 transitions, 449 flow [2023-08-31 22:27:16,607 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:27:16,611 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 175 places, 166 transitions, 449 flow [2023-08-31 22:27:16,612 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 175 places, 166 transitions, 449 flow [2023-08-31 22:27:16,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 166 transitions, 449 flow [2023-08-31 22:27:16,647 INFO L130 PetriNetUnfolder]: 19/317 cut-off events. [2023-08-31 22:27:16,647 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-08-31 22:27:16,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 390 conditions, 317 events. 19/317 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 922 event pairs, 0 based on Foata normal form. 0/249 useless extension candidates. Maximal degree in co-relation 335. Up to 20 conditions per place. [2023-08-31 22:27:16,660 INFO L119 LiptonReduction]: Number of co-enabled transitions 19656 [2023-08-31 22:27:18,940 INFO L134 LiptonReduction]: Checked pairs total: 99221 [2023-08-31 22:27:18,940 INFO L136 LiptonReduction]: Total number of compositions: 81 [2023-08-31 22:27:18,941 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:27:18,941 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:27:18,942 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:27:18,956 INFO L130 PetriNetUnfolder]: 8/155 cut-off events. [2023-08-31 22:27:18,956 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-08-31 22:27:18,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:27:18,956 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:27:18,956 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:27:18,957 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:27:18,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1171468705, now seen corresponding path program 1 times [2023-08-31 22:27:18,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:27:18,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264185321] [2023-08-31 22:27:18,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:27:18,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:27:18,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:27:18,975 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:27:18,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:27:18,989 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:27:18,989 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:27:18,990 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:27:18,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 22:27:18,990 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:27:18,990 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:27:18,991 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:27:18,991 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-31 22:27:19,014 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:27:19,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 191 places, 181 transitions, 502 flow [2023-08-31 22:27:19,054 INFO L130 PetriNetUnfolder]: 21/349 cut-off events. [2023-08-31 22:27:19,054 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-08-31 22:27:19,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 435 conditions, 349 events. 21/349 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1015 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 379. Up to 22 conditions per place. [2023-08-31 22:27:19,058 INFO L82 GeneralOperation]: Start removeDead. Operand has 191 places, 181 transitions, 502 flow [2023-08-31 22:27:19,060 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 191 places, 181 transitions, 502 flow [2023-08-31 22:27:19,060 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:27:19,060 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 191 places, 181 transitions, 502 flow [2023-08-31 22:27:19,060 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 191 places, 181 transitions, 502 flow [2023-08-31 22:27:19,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 191 places, 181 transitions, 502 flow [2023-08-31 22:27:19,103 INFO L130 PetriNetUnfolder]: 21/349 cut-off events. [2023-08-31 22:27:19,104 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-08-31 22:27:19,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 435 conditions, 349 events. 21/349 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1015 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 379. Up to 22 conditions per place. [2023-08-31 22:27:19,115 INFO L119 LiptonReduction]: Number of co-enabled transitions 23940 [2023-08-31 22:27:21,468 INFO L134 LiptonReduction]: Checked pairs total: 119448 [2023-08-31 22:27:21,468 INFO L136 LiptonReduction]: Total number of compositions: 87 [2023-08-31 22:27:21,470 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:27:21,470 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:27:21,470 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:27:21,486 INFO L130 PetriNetUnfolder]: 9/172 cut-off events. [2023-08-31 22:27:21,486 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-08-31 22:27:21,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:27:21,486 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:27:21,486 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:27:21,487 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:27:21,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1707436083, now seen corresponding path program 1 times [2023-08-31 22:27:21,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:27:21,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561309811] [2023-08-31 22:27:21,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:27:21,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:27:21,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:27:21,505 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:27:21,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:27:21,521 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:27:21,521 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:27:21,521 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:27:21,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 22:27:21,522 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:27:21,522 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:27:21,522 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:27:21,523 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-31 22:27:21,549 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:27:21,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 196 transitions, 557 flow [2023-08-31 22:27:21,612 INFO L130 PetriNetUnfolder]: 23/381 cut-off events. [2023-08-31 22:27:21,612 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2023-08-31 22:27:21,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 481 conditions, 381 events. 23/381 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1117 event pairs, 0 based on Foata normal form. 0/299 useless extension candidates. Maximal degree in co-relation 424. Up to 24 conditions per place. [2023-08-31 22:27:21,616 INFO L82 GeneralOperation]: Start removeDead. Operand has 207 places, 196 transitions, 557 flow [2023-08-31 22:27:21,618 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 207 places, 196 transitions, 557 flow [2023-08-31 22:27:21,618 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:27:21,618 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 207 places, 196 transitions, 557 flow [2023-08-31 22:27:21,619 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 207 places, 196 transitions, 557 flow [2023-08-31 22:27:21,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 196 transitions, 557 flow [2023-08-31 22:27:21,667 INFO L130 PetriNetUnfolder]: 23/381 cut-off events. [2023-08-31 22:27:21,667 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2023-08-31 22:27:21,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 481 conditions, 381 events. 23/381 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1117 event pairs, 0 based on Foata normal form. 0/299 useless extension candidates. Maximal degree in co-relation 424. Up to 24 conditions per place. [2023-08-31 22:27:21,680 INFO L119 LiptonReduction]: Number of co-enabled transitions 28644 [2023-08-31 22:27:24,059 INFO L134 LiptonReduction]: Checked pairs total: 138950 [2023-08-31 22:27:24,059 INFO L136 LiptonReduction]: Total number of compositions: 93 [2023-08-31 22:27:24,060 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:27:24,061 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:27:24,061 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:27:24,088 INFO L130 PetriNetUnfolder]: 10/189 cut-off events. [2023-08-31 22:27:24,089 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2023-08-31 22:27:24,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:27:24,089 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:27:24,089 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:27:24,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:27:24,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1983559569, now seen corresponding path program 1 times [2023-08-31 22:27:24,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:27:24,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37243989] [2023-08-31 22:27:24,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:27:24,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:27:24,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:27:24,120 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:27:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:27:24,144 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:27:24,145 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:27:24,145 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:27:24,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 22:27:24,145 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:27:24,147 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:27:24,147 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:27:24,149 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-31 22:27:24,184 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:27:24,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 211 transitions, 614 flow [2023-08-31 22:27:24,241 INFO L130 PetriNetUnfolder]: 25/413 cut-off events. [2023-08-31 22:27:24,241 INFO L131 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2023-08-31 22:27:24,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 528 conditions, 413 events. 25/413 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1238 event pairs, 0 based on Foata normal form. 0/324 useless extension candidates. Maximal degree in co-relation 470. Up to 26 conditions per place. [2023-08-31 22:27:24,245 INFO L82 GeneralOperation]: Start removeDead. Operand has 223 places, 211 transitions, 614 flow [2023-08-31 22:27:24,248 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 223 places, 211 transitions, 614 flow [2023-08-31 22:27:24,248 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:27:24,248 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 223 places, 211 transitions, 614 flow [2023-08-31 22:27:24,249 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 223 places, 211 transitions, 614 flow [2023-08-31 22:27:24,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 211 transitions, 614 flow [2023-08-31 22:27:24,300 INFO L130 PetriNetUnfolder]: 25/413 cut-off events. [2023-08-31 22:27:24,300 INFO L131 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2023-08-31 22:27:24,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 528 conditions, 413 events. 25/413 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1238 event pairs, 0 based on Foata normal form. 0/324 useless extension candidates. Maximal degree in co-relation 470. Up to 26 conditions per place. [2023-08-31 22:27:24,317 INFO L119 LiptonReduction]: Number of co-enabled transitions 33768 [2023-08-31 22:27:26,837 INFO L134 LiptonReduction]: Checked pairs total: 174206 [2023-08-31 22:27:26,837 INFO L136 LiptonReduction]: Total number of compositions: 99 [2023-08-31 22:27:26,838 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:27:26,838 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:27:26,839 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:27:26,870 INFO L130 PetriNetUnfolder]: 11/206 cut-off events. [2023-08-31 22:27:26,870 INFO L131 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2023-08-31 22:27:26,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:27:26,871 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:27:26,871 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:27:26,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:27:26,872 INFO L85 PathProgramCache]: Analyzing trace with hash 659069267, now seen corresponding path program 1 times [2023-08-31 22:27:26,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:27:26,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796714337] [2023-08-31 22:27:26,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:27:26,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:27:26,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:27:26,894 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:27:26,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:27:26,915 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:27:26,916 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:27:26,916 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:27:26,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 22:27:26,916 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:27:26,919 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:27:26,920 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:27:26,920 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-31 22:27:26,950 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:27:26,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 239 places, 226 transitions, 673 flow [2023-08-31 22:27:27,008 INFO L130 PetriNetUnfolder]: 27/445 cut-off events. [2023-08-31 22:27:27,008 INFO L131 PetriNetUnfolder]: For 442/442 co-relation queries the response was YES. [2023-08-31 22:27:27,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 576 conditions, 445 events. 27/445 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1351 event pairs, 0 based on Foata normal form. 0/349 useless extension candidates. Maximal degree in co-relation 517. Up to 28 conditions per place. [2023-08-31 22:27:27,014 INFO L82 GeneralOperation]: Start removeDead. Operand has 239 places, 226 transitions, 673 flow [2023-08-31 22:27:27,017 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 239 places, 226 transitions, 673 flow [2023-08-31 22:27:27,017 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:27:27,017 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 239 places, 226 transitions, 673 flow [2023-08-31 22:27:27,017 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 239 places, 226 transitions, 673 flow [2023-08-31 22:27:27,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 239 places, 226 transitions, 673 flow [2023-08-31 22:27:27,071 INFO L130 PetriNetUnfolder]: 27/445 cut-off events. [2023-08-31 22:27:27,072 INFO L131 PetriNetUnfolder]: For 442/442 co-relation queries the response was YES. [2023-08-31 22:27:27,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 576 conditions, 445 events. 27/445 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1351 event pairs, 0 based on Foata normal form. 0/349 useless extension candidates. Maximal degree in co-relation 517. Up to 28 conditions per place. [2023-08-31 22:27:27,109 INFO L119 LiptonReduction]: Number of co-enabled transitions 39312 [2023-08-31 22:27:29,746 INFO L134 LiptonReduction]: Checked pairs total: 177923 [2023-08-31 22:27:29,746 INFO L136 LiptonReduction]: Total number of compositions: 105 [2023-08-31 22:27:29,747 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:27:29,750 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:27:29,751 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:27:29,775 INFO L130 PetriNetUnfolder]: 12/223 cut-off events. [2023-08-31 22:27:29,776 INFO L131 PetriNetUnfolder]: For 442/442 co-relation queries the response was YES. [2023-08-31 22:27:29,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:27:29,776 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:27:29,776 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:27:29,776 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:27:29,776 INFO L85 PathProgramCache]: Analyzing trace with hash -427260641, now seen corresponding path program 1 times [2023-08-31 22:27:29,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:27:29,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331031960] [2023-08-31 22:27:29,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:27:29,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:27:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:27:29,799 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:27:29,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:27:29,836 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:27:29,836 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:27:29,837 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:27:29,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-31 22:27:29,837 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:27:29,838 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:27:29,838 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:27:29,838 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-08-31 22:27:29,880 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:27:29,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 255 places, 241 transitions, 734 flow [2023-08-31 22:27:29,945 INFO L130 PetriNetUnfolder]: 29/477 cut-off events. [2023-08-31 22:27:29,946 INFO L131 PetriNetUnfolder]: For 546/546 co-relation queries the response was YES. [2023-08-31 22:27:29,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 625 conditions, 477 events. 29/477 cut-off events. For 546/546 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1453 event pairs, 0 based on Foata normal form. 0/374 useless extension candidates. Maximal degree in co-relation 565. Up to 30 conditions per place. [2023-08-31 22:27:29,952 INFO L82 GeneralOperation]: Start removeDead. Operand has 255 places, 241 transitions, 734 flow [2023-08-31 22:27:29,955 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 255 places, 241 transitions, 734 flow [2023-08-31 22:27:29,955 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:27:29,955 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 255 places, 241 transitions, 734 flow [2023-08-31 22:27:29,955 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 255 places, 241 transitions, 734 flow [2023-08-31 22:27:29,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 255 places, 241 transitions, 734 flow [2023-08-31 22:27:30,018 INFO L130 PetriNetUnfolder]: 29/477 cut-off events. [2023-08-31 22:27:30,019 INFO L131 PetriNetUnfolder]: For 546/546 co-relation queries the response was YES. [2023-08-31 22:27:30,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 625 conditions, 477 events. 29/477 cut-off events. For 546/546 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1453 event pairs, 0 based on Foata normal form. 0/374 useless extension candidates. Maximal degree in co-relation 565. Up to 30 conditions per place. [2023-08-31 22:27:30,041 INFO L119 LiptonReduction]: Number of co-enabled transitions 45276 [2023-08-31 22:27:32,960 INFO L134 LiptonReduction]: Checked pairs total: 200770 [2023-08-31 22:27:32,961 INFO L136 LiptonReduction]: Total number of compositions: 111 [2023-08-31 22:27:32,961 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:27:32,962 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:27:32,962 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:27:32,987 INFO L130 PetriNetUnfolder]: 13/240 cut-off events. [2023-08-31 22:27:32,987 INFO L131 PetriNetUnfolder]: For 546/546 co-relation queries the response was YES. [2023-08-31 22:27:32,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:27:32,988 INFO L208 CegarLoopForPetriNet]: trace histogram [15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:27:32,988 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:27:32,988 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:27:32,988 INFO L85 PathProgramCache]: Analyzing trace with hash 838546963, now seen corresponding path program 1 times [2023-08-31 22:27:32,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:27:32,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076981040] [2023-08-31 22:27:32,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:27:32,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:27:33,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:27:33,008 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:27:33,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:27:33,027 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:27:33,027 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:27:33,027 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:27:33,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-31 22:27:33,028 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:27:33,028 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:27:33,028 WARN L233 ceAbstractionStarter]: 14 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:27:33,029 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 15 thread instances. [2023-08-31 22:27:33,063 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:27:33,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 271 places, 256 transitions, 797 flow [2023-08-31 22:27:33,155 INFO L130 PetriNetUnfolder]: 31/509 cut-off events. [2023-08-31 22:27:33,155 INFO L131 PetriNetUnfolder]: For 665/665 co-relation queries the response was YES. [2023-08-31 22:27:33,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 675 conditions, 509 events. 31/509 cut-off events. For 665/665 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1528 event pairs, 0 based on Foata normal form. 0/399 useless extension candidates. Maximal degree in co-relation 614. Up to 32 conditions per place. [2023-08-31 22:27:33,162 INFO L82 GeneralOperation]: Start removeDead. Operand has 271 places, 256 transitions, 797 flow [2023-08-31 22:27:33,165 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 271 places, 256 transitions, 797 flow [2023-08-31 22:27:33,165 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:27:33,165 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 271 places, 256 transitions, 797 flow [2023-08-31 22:27:33,166 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 271 places, 256 transitions, 797 flow [2023-08-31 22:27:33,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 271 places, 256 transitions, 797 flow [2023-08-31 22:27:33,235 INFO L130 PetriNetUnfolder]: 31/509 cut-off events. [2023-08-31 22:27:33,235 INFO L131 PetriNetUnfolder]: For 665/665 co-relation queries the response was YES. [2023-08-31 22:27:33,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 675 conditions, 509 events. 31/509 cut-off events. For 665/665 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1528 event pairs, 0 based on Foata normal form. 0/399 useless extension candidates. Maximal degree in co-relation 614. Up to 32 conditions per place. [2023-08-31 22:27:33,259 INFO L119 LiptonReduction]: Number of co-enabled transitions 51660 [2023-08-31 22:27:36,202 INFO L134 LiptonReduction]: Checked pairs total: 227492 [2023-08-31 22:27:36,203 INFO L136 LiptonReduction]: Total number of compositions: 117 [2023-08-31 22:27:36,204 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:27:36,204 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:27:36,204 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:27:36,233 INFO L130 PetriNetUnfolder]: 14/257 cut-off events. [2023-08-31 22:27:36,233 INFO L131 PetriNetUnfolder]: For 665/665 co-relation queries the response was YES. [2023-08-31 22:27:36,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:27:36,234 INFO L208 CegarLoopForPetriNet]: trace histogram [16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:27:36,234 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:27:36,234 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:27:36,234 INFO L85 PathProgramCache]: Analyzing trace with hash 635720238, now seen corresponding path program 1 times [2023-08-31 22:27:36,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:27:36,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091413873] [2023-08-31 22:27:36,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:27:36,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:27:36,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:27:36,262 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:27:36,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:27:36,287 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:27:36,287 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:27:36,288 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:27:36,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-31 22:27:36,289 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:27:36,289 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:27:36,290 WARN L233 ceAbstractionStarter]: 15 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:27:36,290 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 16 thread instances. [2023-08-31 22:27:36,328 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:27:36,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 287 places, 271 transitions, 862 flow [2023-08-31 22:27:36,422 INFO L130 PetriNetUnfolder]: 33/541 cut-off events. [2023-08-31 22:27:36,422 INFO L131 PetriNetUnfolder]: For 800/800 co-relation queries the response was YES. [2023-08-31 22:27:36,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 726 conditions, 541 events. 33/541 cut-off events. For 800/800 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1615 event pairs, 0 based on Foata normal form. 0/424 useless extension candidates. Maximal degree in co-relation 664. Up to 34 conditions per place. [2023-08-31 22:27:36,429 INFO L82 GeneralOperation]: Start removeDead. Operand has 287 places, 271 transitions, 862 flow [2023-08-31 22:27:36,432 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 287 places, 271 transitions, 862 flow [2023-08-31 22:27:36,432 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:27:36,433 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 287 places, 271 transitions, 862 flow [2023-08-31 22:27:36,433 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 287 places, 271 transitions, 862 flow [2023-08-31 22:27:36,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 287 places, 271 transitions, 862 flow [2023-08-31 22:27:36,504 INFO L130 PetriNetUnfolder]: 33/541 cut-off events. [2023-08-31 22:27:36,504 INFO L131 PetriNetUnfolder]: For 800/800 co-relation queries the response was YES. [2023-08-31 22:27:36,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 726 conditions, 541 events. 33/541 cut-off events. For 800/800 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1615 event pairs, 0 based on Foata normal form. 0/424 useless extension candidates. Maximal degree in co-relation 664. Up to 34 conditions per place. [2023-08-31 22:27:36,521 INFO L119 LiptonReduction]: Number of co-enabled transitions 58464 [2023-08-31 22:27:39,569 INFO L134 LiptonReduction]: Checked pairs total: 263134 [2023-08-31 22:27:39,570 INFO L136 LiptonReduction]: Total number of compositions: 123 [2023-08-31 22:27:39,571 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:27:39,571 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:27:39,571 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:27:39,603 INFO L130 PetriNetUnfolder]: 15/274 cut-off events. [2023-08-31 22:27:39,603 INFO L131 PetriNetUnfolder]: For 800/800 co-relation queries the response was YES. [2023-08-31 22:27:39,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:27:39,603 INFO L208 CegarLoopForPetriNet]: trace histogram [17, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:27:39,603 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:27:39,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:27:39,604 INFO L85 PathProgramCache]: Analyzing trace with hash 562107570, now seen corresponding path program 1 times [2023-08-31 22:27:39,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:27:39,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480031282] [2023-08-31 22:27:39,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:27:39,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:27:39,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:27:39,626 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:27:39,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:27:39,650 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:27:39,651 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:27:39,651 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:27:39,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-31 22:27:39,651 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:27:39,652 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:27:39,652 WARN L233 ceAbstractionStarter]: 16 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:27:39,652 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 17 thread instances. [2023-08-31 22:27:39,692 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:27:39,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 303 places, 286 transitions, 929 flow [2023-08-31 22:27:39,781 INFO L130 PetriNetUnfolder]: 35/573 cut-off events. [2023-08-31 22:27:39,781 INFO L131 PetriNetUnfolder]: For 952/952 co-relation queries the response was YES. [2023-08-31 22:27:39,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 778 conditions, 573 events. 35/573 cut-off events. For 952/952 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1719 event pairs, 0 based on Foata normal form. 0/449 useless extension candidates. Maximal degree in co-relation 715. Up to 36 conditions per place. [2023-08-31 22:27:39,790 INFO L82 GeneralOperation]: Start removeDead. Operand has 303 places, 286 transitions, 929 flow [2023-08-31 22:27:39,793 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 303 places, 286 transitions, 929 flow [2023-08-31 22:27:39,793 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:27:39,794 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 303 places, 286 transitions, 929 flow [2023-08-31 22:27:39,794 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 303 places, 286 transitions, 929 flow [2023-08-31 22:27:39,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 303 places, 286 transitions, 929 flow [2023-08-31 22:27:39,903 INFO L130 PetriNetUnfolder]: 35/573 cut-off events. [2023-08-31 22:27:39,903 INFO L131 PetriNetUnfolder]: For 952/952 co-relation queries the response was YES. [2023-08-31 22:27:39,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 778 conditions, 573 events. 35/573 cut-off events. For 952/952 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1719 event pairs, 0 based on Foata normal form. 0/449 useless extension candidates. Maximal degree in co-relation 715. Up to 36 conditions per place. [2023-08-31 22:27:39,926 INFO L119 LiptonReduction]: Number of co-enabled transitions 65688 [2023-08-31 22:27:43,193 INFO L134 LiptonReduction]: Checked pairs total: 342428 [2023-08-31 22:27:43,193 INFO L136 LiptonReduction]: Total number of compositions: 129 [2023-08-31 22:27:43,194 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:27:43,194 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:27:43,194 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:27:43,228 INFO L130 PetriNetUnfolder]: 16/291 cut-off events. [2023-08-31 22:27:43,228 INFO L131 PetriNetUnfolder]: For 952/952 co-relation queries the response was YES. [2023-08-31 22:27:43,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:27:43,228 INFO L208 CegarLoopForPetriNet]: trace histogram [18, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:27:43,229 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:27:43,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:27:43,229 INFO L85 PathProgramCache]: Analyzing trace with hash 22318687, now seen corresponding path program 1 times [2023-08-31 22:27:43,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:27:43,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753262392] [2023-08-31 22:27:43,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:27:43,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:27:43,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:27:43,251 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:27:43,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:27:43,276 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:27:43,276 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:27:43,276 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:27:43,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-31 22:27:43,277 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:27:43,277 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:27:43,277 WARN L233 ceAbstractionStarter]: 17 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:27:43,277 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 18 thread instances. [2023-08-31 22:27:43,317 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:27:43,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 319 places, 301 transitions, 998 flow [2023-08-31 22:27:43,429 INFO L130 PetriNetUnfolder]: 37/605 cut-off events. [2023-08-31 22:27:43,429 INFO L131 PetriNetUnfolder]: For 1122/1122 co-relation queries the response was YES. [2023-08-31 22:27:43,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 831 conditions, 605 events. 37/605 cut-off events. For 1122/1122 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1819 event pairs, 0 based on Foata normal form. 0/474 useless extension candidates. Maximal degree in co-relation 767. Up to 38 conditions per place. [2023-08-31 22:27:43,438 INFO L82 GeneralOperation]: Start removeDead. Operand has 319 places, 301 transitions, 998 flow [2023-08-31 22:27:43,441 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 319 places, 301 transitions, 998 flow [2023-08-31 22:27:43,441 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:27:43,441 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 319 places, 301 transitions, 998 flow [2023-08-31 22:27:43,442 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 319 places, 301 transitions, 998 flow [2023-08-31 22:27:43,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 319 places, 301 transitions, 998 flow [2023-08-31 22:27:43,521 INFO L130 PetriNetUnfolder]: 37/605 cut-off events. [2023-08-31 22:27:43,521 INFO L131 PetriNetUnfolder]: For 1122/1122 co-relation queries the response was YES. [2023-08-31 22:27:43,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 831 conditions, 605 events. 37/605 cut-off events. For 1122/1122 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1819 event pairs, 0 based on Foata normal form. 0/474 useless extension candidates. Maximal degree in co-relation 767. Up to 38 conditions per place. [2023-08-31 22:27:43,543 INFO L119 LiptonReduction]: Number of co-enabled transitions 73332 [2023-08-31 22:27:46,984 INFO L134 LiptonReduction]: Checked pairs total: 388322 [2023-08-31 22:27:46,985 INFO L136 LiptonReduction]: Total number of compositions: 135 [2023-08-31 22:27:46,985 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:27:46,986 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:27:46,986 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:27:47,023 INFO L130 PetriNetUnfolder]: 17/308 cut-off events. [2023-08-31 22:27:47,024 INFO L131 PetriNetUnfolder]: For 1122/1122 co-relation queries the response was YES. [2023-08-31 22:27:47,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:27:47,024 INFO L208 CegarLoopForPetriNet]: trace histogram [19, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:27:47,024 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:27:47,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:27:47,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1213463155, now seen corresponding path program 1 times [2023-08-31 22:27:47,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:27:47,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060308125] [2023-08-31 22:27:47,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:27:47,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:27:47,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:27:47,047 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:27:47,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:27:47,074 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:27:47,075 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:27:47,075 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:27:47,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-31 22:27:47,075 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:27:47,075 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:27:47,076 WARN L233 ceAbstractionStarter]: 18 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:27:47,076 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 19 thread instances. [2023-08-31 22:27:47,119 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:27:47,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 335 places, 316 transitions, 1069 flow [2023-08-31 22:27:47,220 INFO L130 PetriNetUnfolder]: 39/637 cut-off events. [2023-08-31 22:27:47,220 INFO L131 PetriNetUnfolder]: For 1311/1311 co-relation queries the response was YES. [2023-08-31 22:27:47,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 885 conditions, 637 events. 39/637 cut-off events. For 1311/1311 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1927 event pairs, 0 based on Foata normal form. 0/499 useless extension candidates. Maximal degree in co-relation 820. Up to 40 conditions per place. [2023-08-31 22:27:47,232 INFO L82 GeneralOperation]: Start removeDead. Operand has 335 places, 316 transitions, 1069 flow [2023-08-31 22:27:47,241 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 335 places, 316 transitions, 1069 flow [2023-08-31 22:27:47,241 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:27:47,241 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 335 places, 316 transitions, 1069 flow [2023-08-31 22:27:47,241 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 335 places, 316 transitions, 1069 flow [2023-08-31 22:27:47,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 335 places, 316 transitions, 1069 flow [2023-08-31 22:27:47,381 INFO L130 PetriNetUnfolder]: 39/637 cut-off events. [2023-08-31 22:27:47,381 INFO L131 PetriNetUnfolder]: For 1311/1311 co-relation queries the response was YES. [2023-08-31 22:27:47,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 885 conditions, 637 events. 39/637 cut-off events. For 1311/1311 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1927 event pairs, 0 based on Foata normal form. 0/499 useless extension candidates. Maximal degree in co-relation 820. Up to 40 conditions per place. [2023-08-31 22:27:47,426 INFO L119 LiptonReduction]: Number of co-enabled transitions 81396 [2023-08-31 22:27:51,117 INFO L134 LiptonReduction]: Checked pairs total: 419816 [2023-08-31 22:27:51,117 INFO L136 LiptonReduction]: Total number of compositions: 141 [2023-08-31 22:27:51,119 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:27:51,119 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:27:51,119 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:27:51,178 INFO L130 PetriNetUnfolder]: 18/325 cut-off events. [2023-08-31 22:27:51,178 INFO L131 PetriNetUnfolder]: For 1311/1311 co-relation queries the response was YES. [2023-08-31 22:27:51,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:27:51,178 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:27:51,178 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:27:51,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:27:51,178 INFO L85 PathProgramCache]: Analyzing trace with hash 121594311, now seen corresponding path program 1 times [2023-08-31 22:27:51,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:27:51,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538214532] [2023-08-31 22:27:51,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:27:51,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:27:51,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:27:51,202 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:27:51,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:27:51,231 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:27:51,231 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:27:51,231 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:27:51,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-31 22:27:51,231 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:27:51,232 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:27:51,232 WARN L233 ceAbstractionStarter]: 19 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:27:51,232 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 20 thread instances. [2023-08-31 22:27:51,277 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:27:51,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 351 places, 331 transitions, 1142 flow [2023-08-31 22:27:51,386 INFO L130 PetriNetUnfolder]: 41/669 cut-off events. [2023-08-31 22:27:51,386 INFO L131 PetriNetUnfolder]: For 1520/1520 co-relation queries the response was YES. [2023-08-31 22:27:51,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 940 conditions, 669 events. 41/669 cut-off events. For 1520/1520 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 2016 event pairs, 0 based on Foata normal form. 0/524 useless extension candidates. Maximal degree in co-relation 874. Up to 42 conditions per place. [2023-08-31 22:27:51,399 INFO L82 GeneralOperation]: Start removeDead. Operand has 351 places, 331 transitions, 1142 flow [2023-08-31 22:27:51,403 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 351 places, 331 transitions, 1142 flow [2023-08-31 22:27:51,403 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:27:51,403 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 351 places, 331 transitions, 1142 flow [2023-08-31 22:27:51,404 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 351 places, 331 transitions, 1142 flow [2023-08-31 22:27:51,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 351 places, 331 transitions, 1142 flow [2023-08-31 22:27:51,528 INFO L130 PetriNetUnfolder]: 41/669 cut-off events. [2023-08-31 22:27:51,529 INFO L131 PetriNetUnfolder]: For 1520/1520 co-relation queries the response was YES. [2023-08-31 22:27:51,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 940 conditions, 669 events. 41/669 cut-off events. For 1520/1520 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 2016 event pairs, 0 based on Foata normal form. 0/524 useless extension candidates. Maximal degree in co-relation 874. Up to 42 conditions per place. [2023-08-31 22:27:51,570 INFO L119 LiptonReduction]: Number of co-enabled transitions 89880 [2023-08-31 22:27:55,385 INFO L134 LiptonReduction]: Checked pairs total: 408436 [2023-08-31 22:27:55,385 INFO L136 LiptonReduction]: Total number of compositions: 147 [2023-08-31 22:27:55,386 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:27:55,386 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:27:55,386 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:27:55,425 INFO L130 PetriNetUnfolder]: 19/342 cut-off events. [2023-08-31 22:27:55,425 INFO L131 PetriNetUnfolder]: For 1520/1520 co-relation queries the response was YES. [2023-08-31 22:27:55,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:27:55,426 INFO L208 CegarLoopForPetriNet]: trace histogram [21, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:27:55,426 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:27:55,426 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:27:55,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1454959698, now seen corresponding path program 1 times [2023-08-31 22:27:55,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:27:55,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806342136] [2023-08-31 22:27:55,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:27:55,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:27:55,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:27:55,468 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:27:55,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:27:55,499 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:27:55,500 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:27:55,500 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:27:55,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-31 22:27:55,500 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:27:55,501 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:27:55,501 WARN L233 ceAbstractionStarter]: 20 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:27:55,501 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 21 thread instances. [2023-08-31 22:27:55,549 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:27:55,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 367 places, 346 transitions, 1217 flow [2023-08-31 22:27:55,737 INFO L130 PetriNetUnfolder]: 43/701 cut-off events. [2023-08-31 22:27:55,737 INFO L131 PetriNetUnfolder]: For 1750/1750 co-relation queries the response was YES. [2023-08-31 22:27:55,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 996 conditions, 701 events. 43/701 cut-off events. For 1750/1750 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 2124 event pairs, 0 based on Foata normal form. 0/549 useless extension candidates. Maximal degree in co-relation 929. Up to 44 conditions per place. [2023-08-31 22:27:55,749 INFO L82 GeneralOperation]: Start removeDead. Operand has 367 places, 346 transitions, 1217 flow [2023-08-31 22:27:55,753 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 367 places, 346 transitions, 1217 flow [2023-08-31 22:27:55,753 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:27:55,753 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 367 places, 346 transitions, 1217 flow [2023-08-31 22:27:55,753 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 367 places, 346 transitions, 1217 flow [2023-08-31 22:27:55,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 367 places, 346 transitions, 1217 flow [2023-08-31 22:27:55,879 INFO L130 PetriNetUnfolder]: 43/701 cut-off events. [2023-08-31 22:27:55,879 INFO L131 PetriNetUnfolder]: For 1750/1750 co-relation queries the response was YES. [2023-08-31 22:27:55,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 996 conditions, 701 events. 43/701 cut-off events. For 1750/1750 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 2124 event pairs, 0 based on Foata normal form. 0/549 useless extension candidates. Maximal degree in co-relation 929. Up to 44 conditions per place. [2023-08-31 22:27:55,925 INFO L119 LiptonReduction]: Number of co-enabled transitions 98784 [2023-08-31 22:27:59,768 INFO L134 LiptonReduction]: Checked pairs total: 443302 [2023-08-31 22:27:59,768 INFO L136 LiptonReduction]: Total number of compositions: 153 [2023-08-31 22:27:59,769 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:27:59,770 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:27:59,770 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:27:59,802 INFO L130 PetriNetUnfolder]: 20/359 cut-off events. [2023-08-31 22:27:59,802 INFO L131 PetriNetUnfolder]: For 1750/1750 co-relation queries the response was YES. [2023-08-31 22:27:59,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:27:59,803 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:27:59,803 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:27:59,803 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:27:59,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1102342366, now seen corresponding path program 1 times [2023-08-31 22:27:59,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:27:59,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496022889] [2023-08-31 22:27:59,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:27:59,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:27:59,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:27:59,841 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:27:59,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:27:59,890 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:27:59,890 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:27:59,890 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:27:59,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-31 22:27:59,891 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:27:59,891 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:27:59,891 WARN L233 ceAbstractionStarter]: 21 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:27:59,891 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 22 thread instances. [2023-08-31 22:27:59,956 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:27:59,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 383 places, 361 transitions, 1294 flow [2023-08-31 22:28:00,089 INFO L130 PetriNetUnfolder]: 45/733 cut-off events. [2023-08-31 22:28:00,089 INFO L131 PetriNetUnfolder]: For 2002/2002 co-relation queries the response was YES. [2023-08-31 22:28:00,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1053 conditions, 733 events. 45/733 cut-off events. For 2002/2002 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 2208 event pairs, 0 based on Foata normal form. 0/574 useless extension candidates. Maximal degree in co-relation 985. Up to 46 conditions per place. [2023-08-31 22:28:00,105 INFO L82 GeneralOperation]: Start removeDead. Operand has 383 places, 361 transitions, 1294 flow [2023-08-31 22:28:00,109 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 383 places, 361 transitions, 1294 flow [2023-08-31 22:28:00,109 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:28:00,109 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 383 places, 361 transitions, 1294 flow [2023-08-31 22:28:00,109 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 383 places, 361 transitions, 1294 flow [2023-08-31 22:28:00,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 383 places, 361 transitions, 1294 flow [2023-08-31 22:28:00,213 INFO L130 PetriNetUnfolder]: 45/733 cut-off events. [2023-08-31 22:28:00,214 INFO L131 PetriNetUnfolder]: For 2002/2002 co-relation queries the response was YES. [2023-08-31 22:28:00,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1053 conditions, 733 events. 45/733 cut-off events. For 2002/2002 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 2208 event pairs, 0 based on Foata normal form. 0/574 useless extension candidates. Maximal degree in co-relation 985. Up to 46 conditions per place. [2023-08-31 22:28:00,264 INFO L119 LiptonReduction]: Number of co-enabled transitions 108108 [2023-08-31 22:28:04,415 INFO L134 LiptonReduction]: Checked pairs total: 495212 [2023-08-31 22:28:04,415 INFO L136 LiptonReduction]: Total number of compositions: 159 [2023-08-31 22:28:04,416 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:28:04,416 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:28:04,417 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:28:04,468 INFO L130 PetriNetUnfolder]: 21/376 cut-off events. [2023-08-31 22:28:04,468 INFO L131 PetriNetUnfolder]: For 2002/2002 co-relation queries the response was YES. [2023-08-31 22:28:04,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:28:04,468 INFO L208 CegarLoopForPetriNet]: trace histogram [23, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:28:04,469 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:28:04,469 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:28:04,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1401928850, now seen corresponding path program 1 times [2023-08-31 22:28:04,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:28:04,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53731552] [2023-08-31 22:28:04,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:28:04,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:28:04,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:28:04,495 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:28:04,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:28:04,530 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:28:04,530 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:28:04,530 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:28:04,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-31 22:28:04,530 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:28:04,531 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:28:04,531 WARN L233 ceAbstractionStarter]: 22 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:28:04,531 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 23 thread instances. [2023-08-31 22:28:04,585 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:28:04,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 399 places, 376 transitions, 1373 flow [2023-08-31 22:28:04,714 INFO L130 PetriNetUnfolder]: 47/765 cut-off events. [2023-08-31 22:28:04,715 INFO L131 PetriNetUnfolder]: For 2277/2277 co-relation queries the response was YES. [2023-08-31 22:28:04,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1111 conditions, 765 events. 47/765 cut-off events. For 2277/2277 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 2332 event pairs, 0 based on Foata normal form. 0/599 useless extension candidates. Maximal degree in co-relation 1042. Up to 48 conditions per place. [2023-08-31 22:28:04,730 INFO L82 GeneralOperation]: Start removeDead. Operand has 399 places, 376 transitions, 1373 flow [2023-08-31 22:28:04,734 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 399 places, 376 transitions, 1373 flow [2023-08-31 22:28:04,734 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:28:04,734 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 399 places, 376 transitions, 1373 flow [2023-08-31 22:28:04,734 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 399 places, 376 transitions, 1373 flow [2023-08-31 22:28:04,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 399 places, 376 transitions, 1373 flow [2023-08-31 22:28:04,921 INFO L130 PetriNetUnfolder]: 47/765 cut-off events. [2023-08-31 22:28:04,922 INFO L131 PetriNetUnfolder]: For 2277/2277 co-relation queries the response was YES. [2023-08-31 22:28:04,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1111 conditions, 765 events. 47/765 cut-off events. For 2277/2277 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 2332 event pairs, 0 based on Foata normal form. 0/599 useless extension candidates. Maximal degree in co-relation 1042. Up to 48 conditions per place. [2023-08-31 22:28:04,963 INFO L119 LiptonReduction]: Number of co-enabled transitions 117852 [2023-08-31 22:28:09,251 INFO L134 LiptonReduction]: Checked pairs total: 619090 [2023-08-31 22:28:09,251 INFO L136 LiptonReduction]: Total number of compositions: 165 [2023-08-31 22:28:09,252 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:28:09,252 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:28:09,252 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:28:09,296 INFO L130 PetriNetUnfolder]: 22/393 cut-off events. [2023-08-31 22:28:09,296 INFO L131 PetriNetUnfolder]: For 2277/2277 co-relation queries the response was YES. [2023-08-31 22:28:09,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:28:09,297 INFO L208 CegarLoopForPetriNet]: trace histogram [24, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:28:09,297 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:28:09,297 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:28:09,297 INFO L85 PathProgramCache]: Analyzing trace with hash 636244463, now seen corresponding path program 1 times [2023-08-31 22:28:09,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:28:09,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297875235] [2023-08-31 22:28:09,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:28:09,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:28:09,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:28:09,327 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:28:09,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:28:09,362 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:28:09,362 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:28:09,362 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:28:09,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-31 22:28:09,362 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:28:09,363 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:28:09,363 WARN L233 ceAbstractionStarter]: 23 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:28:09,363 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 24 thread instances. [2023-08-31 22:28:09,416 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:28:09,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 415 places, 391 transitions, 1454 flow [2023-08-31 22:28:09,574 INFO L130 PetriNetUnfolder]: 49/797 cut-off events. [2023-08-31 22:28:09,575 INFO L131 PetriNetUnfolder]: For 2576/2576 co-relation queries the response was YES. [2023-08-31 22:28:09,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1170 conditions, 797 events. 49/797 cut-off events. For 2576/2576 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 2446 event pairs, 0 based on Foata normal form. 0/624 useless extension candidates. Maximal degree in co-relation 1100. Up to 50 conditions per place. [2023-08-31 22:28:09,587 INFO L82 GeneralOperation]: Start removeDead. Operand has 415 places, 391 transitions, 1454 flow [2023-08-31 22:28:09,591 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 415 places, 391 transitions, 1454 flow [2023-08-31 22:28:09,591 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:28:09,591 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 415 places, 391 transitions, 1454 flow [2023-08-31 22:28:09,592 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 415 places, 391 transitions, 1454 flow [2023-08-31 22:28:09,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 415 places, 391 transitions, 1454 flow [2023-08-31 22:28:09,780 INFO L130 PetriNetUnfolder]: 49/797 cut-off events. [2023-08-31 22:28:09,780 INFO L131 PetriNetUnfolder]: For 2576/2576 co-relation queries the response was YES. [2023-08-31 22:28:09,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1170 conditions, 797 events. 49/797 cut-off events. For 2576/2576 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 2446 event pairs, 0 based on Foata normal form. 0/624 useless extension candidates. Maximal degree in co-relation 1100. Up to 50 conditions per place. [2023-08-31 22:28:09,823 INFO L119 LiptonReduction]: Number of co-enabled transitions 128016 [2023-08-31 22:28:14,174 INFO L134 LiptonReduction]: Checked pairs total: 580490 [2023-08-31 22:28:14,174 INFO L136 LiptonReduction]: Total number of compositions: 171 [2023-08-31 22:28:14,175 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:28:14,175 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:28:14,175 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:28:14,216 INFO L130 PetriNetUnfolder]: 23/410 cut-off events. [2023-08-31 22:28:14,216 INFO L131 PetriNetUnfolder]: For 2576/2576 co-relation queries the response was YES. [2023-08-31 22:28:14,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:28:14,217 INFO L208 CegarLoopForPetriNet]: trace histogram [25, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:28:14,217 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:28:14,217 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:28:14,217 INFO L85 PathProgramCache]: Analyzing trace with hash 910052217, now seen corresponding path program 1 times [2023-08-31 22:28:14,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:28:14,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835865084] [2023-08-31 22:28:14,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:28:14,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:28:14,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:28:14,250 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:28:14,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:28:14,289 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:28:14,290 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:28:14,290 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:28:14,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-31 22:28:14,290 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:28:14,290 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:28:14,290 WARN L233 ceAbstractionStarter]: 24 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:28:14,291 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 25 thread instances. [2023-08-31 22:28:14,347 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:28:14,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 431 places, 406 transitions, 1537 flow [2023-08-31 22:28:14,562 INFO L130 PetriNetUnfolder]: 51/829 cut-off events. [2023-08-31 22:28:14,562 INFO L131 PetriNetUnfolder]: For 2900/2900 co-relation queries the response was YES. [2023-08-31 22:28:14,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1230 conditions, 829 events. 51/829 cut-off events. For 2900/2900 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 2534 event pairs, 0 based on Foata normal form. 0/649 useless extension candidates. Maximal degree in co-relation 1159. Up to 52 conditions per place. [2023-08-31 22:28:14,580 INFO L82 GeneralOperation]: Start removeDead. Operand has 431 places, 406 transitions, 1537 flow [2023-08-31 22:28:14,585 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 431 places, 406 transitions, 1537 flow [2023-08-31 22:28:14,586 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:28:14,586 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 431 places, 406 transitions, 1537 flow [2023-08-31 22:28:14,586 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 431 places, 406 transitions, 1537 flow [2023-08-31 22:28:14,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 431 places, 406 transitions, 1537 flow [2023-08-31 22:28:14,789 INFO L130 PetriNetUnfolder]: 51/829 cut-off events. [2023-08-31 22:28:14,790 INFO L131 PetriNetUnfolder]: For 2900/2900 co-relation queries the response was YES. [2023-08-31 22:28:14,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1230 conditions, 829 events. 51/829 cut-off events. For 2900/2900 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 2534 event pairs, 0 based on Foata normal form. 0/649 useless extension candidates. Maximal degree in co-relation 1159. Up to 52 conditions per place. [2023-08-31 22:28:14,859 INFO L119 LiptonReduction]: Number of co-enabled transitions 138600 [2023-08-31 22:28:19,678 INFO L134 LiptonReduction]: Checked pairs total: 627551 [2023-08-31 22:28:19,679 INFO L136 LiptonReduction]: Total number of compositions: 177 [2023-08-31 22:28:19,680 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:28:19,680 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:28:19,680 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:28:19,727 INFO L130 PetriNetUnfolder]: 24/427 cut-off events. [2023-08-31 22:28:19,727 INFO L131 PetriNetUnfolder]: For 2900/2900 co-relation queries the response was YES. [2023-08-31 22:28:19,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:28:19,727 INFO L208 CegarLoopForPetriNet]: trace histogram [26, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:28:19,727 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:28:19,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:28:19,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1978128479, now seen corresponding path program 1 times [2023-08-31 22:28:19,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:28:19,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067832948] [2023-08-31 22:28:19,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:28:19,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:28:19,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:28:19,754 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:28:19,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:28:19,797 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:28:19,797 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:28:19,797 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:28:19,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-31 22:28:19,797 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:28:19,798 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:28:19,798 WARN L233 ceAbstractionStarter]: 25 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:28:19,798 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 26 thread instances. [2023-08-31 22:28:19,851 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:28:19,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 447 places, 421 transitions, 1622 flow [2023-08-31 22:28:20,115 INFO L130 PetriNetUnfolder]: 53/861 cut-off events. [2023-08-31 22:28:20,115 INFO L131 PetriNetUnfolder]: For 3250/3250 co-relation queries the response was YES. [2023-08-31 22:28:20,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1291 conditions, 861 events. 53/861 cut-off events. For 3250/3250 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 2700 event pairs, 0 based on Foata normal form. 0/674 useless extension candidates. Maximal degree in co-relation 1219. Up to 54 conditions per place. [2023-08-31 22:28:20,134 INFO L82 GeneralOperation]: Start removeDead. Operand has 447 places, 421 transitions, 1622 flow [2023-08-31 22:28:20,138 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 447 places, 421 transitions, 1622 flow [2023-08-31 22:28:20,138 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:28:20,139 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 447 places, 421 transitions, 1622 flow [2023-08-31 22:28:20,139 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 447 places, 421 transitions, 1622 flow [2023-08-31 22:28:20,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 447 places, 421 transitions, 1622 flow [2023-08-31 22:28:20,283 INFO L130 PetriNetUnfolder]: 53/861 cut-off events. [2023-08-31 22:28:20,284 INFO L131 PetriNetUnfolder]: For 3250/3250 co-relation queries the response was YES. [2023-08-31 22:28:20,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1291 conditions, 861 events. 53/861 cut-off events. For 3250/3250 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 2700 event pairs, 0 based on Foata normal form. 0/674 useless extension candidates. Maximal degree in co-relation 1219. Up to 54 conditions per place. [2023-08-31 22:28:20,333 INFO L119 LiptonReduction]: Number of co-enabled transitions 149604 [2023-08-31 22:28:25,193 INFO L134 LiptonReduction]: Checked pairs total: 797619 [2023-08-31 22:28:25,193 INFO L136 LiptonReduction]: Total number of compositions: 183 [2023-08-31 22:28:25,194 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:28:25,194 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:28:25,195 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:28:25,246 INFO L130 PetriNetUnfolder]: 25/444 cut-off events. [2023-08-31 22:28:25,246 INFO L131 PetriNetUnfolder]: For 3250/3250 co-relation queries the response was YES. [2023-08-31 22:28:25,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:28:25,246 INFO L208 CegarLoopForPetriNet]: trace histogram [27, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:28:25,246 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:28:25,247 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:28:25,247 INFO L85 PathProgramCache]: Analyzing trace with hash 337159859, now seen corresponding path program 1 times [2023-08-31 22:28:25,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:28:25,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982048606] [2023-08-31 22:28:25,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:28:25,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:28:25,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:28:25,275 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:28:25,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:28:25,320 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:28:25,320 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:28:25,320 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:28:25,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-31 22:28:25,320 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:28:25,321 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:28:25,321 WARN L233 ceAbstractionStarter]: 26 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:28:25,321 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 27 thread instances. [2023-08-31 22:28:25,377 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:28:25,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 463 places, 436 transitions, 1709 flow [2023-08-31 22:28:25,609 INFO L130 PetriNetUnfolder]: 55/893 cut-off events. [2023-08-31 22:28:25,610 INFO L131 PetriNetUnfolder]: For 3627/3627 co-relation queries the response was YES. [2023-08-31 22:28:25,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1353 conditions, 893 events. 55/893 cut-off events. For 3627/3627 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 2800 event pairs, 0 based on Foata normal form. 0/699 useless extension candidates. Maximal degree in co-relation 1280. Up to 56 conditions per place. [2023-08-31 22:28:25,626 INFO L82 GeneralOperation]: Start removeDead. Operand has 463 places, 436 transitions, 1709 flow [2023-08-31 22:28:25,630 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 463 places, 436 transitions, 1709 flow [2023-08-31 22:28:25,631 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:28:25,631 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 463 places, 436 transitions, 1709 flow [2023-08-31 22:28:25,631 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 463 places, 436 transitions, 1709 flow [2023-08-31 22:28:25,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 463 places, 436 transitions, 1709 flow [2023-08-31 22:28:25,791 INFO L130 PetriNetUnfolder]: 55/893 cut-off events. [2023-08-31 22:28:25,791 INFO L131 PetriNetUnfolder]: For 3627/3627 co-relation queries the response was YES. [2023-08-31 22:28:25,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1353 conditions, 893 events. 55/893 cut-off events. For 3627/3627 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 2800 event pairs, 0 based on Foata normal form. 0/699 useless extension candidates. Maximal degree in co-relation 1280. Up to 56 conditions per place. [2023-08-31 22:28:25,864 INFO L119 LiptonReduction]: Number of co-enabled transitions 161028 [2023-08-31 22:28:30,831 INFO L134 LiptonReduction]: Checked pairs total: 860376 [2023-08-31 22:28:30,831 INFO L136 LiptonReduction]: Total number of compositions: 189 [2023-08-31 22:28:30,832 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:28:30,832 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:28:30,832 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:28:30,886 INFO L130 PetriNetUnfolder]: 26/461 cut-off events. [2023-08-31 22:28:30,886 INFO L131 PetriNetUnfolder]: For 3627/3627 co-relation queries the response was YES. [2023-08-31 22:28:30,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:28:30,886 INFO L208 CegarLoopForPetriNet]: trace histogram [28, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:28:30,886 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:28:30,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:28:30,887 INFO L85 PathProgramCache]: Analyzing trace with hash -938778769, now seen corresponding path program 1 times [2023-08-31 22:28:30,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:28:30,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207518211] [2023-08-31 22:28:30,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:28:30,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:28:30,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:28:30,918 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:28:30,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:28:30,961 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:28:30,961 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:28:30,961 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:28:30,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-31 22:28:30,961 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:28:30,962 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:28:30,962 WARN L233 ceAbstractionStarter]: 27 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:28:30,962 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 28 thread instances. [2023-08-31 22:28:31,025 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:28:31,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 479 places, 451 transitions, 1798 flow [2023-08-31 22:28:31,252 INFO L130 PetriNetUnfolder]: 57/925 cut-off events. [2023-08-31 22:28:31,252 INFO L131 PetriNetUnfolder]: For 4032/4032 co-relation queries the response was YES. [2023-08-31 22:28:31,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1416 conditions, 925 events. 57/925 cut-off events. For 4032/4032 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 2895 event pairs, 0 based on Foata normal form. 0/724 useless extension candidates. Maximal degree in co-relation 1342. Up to 58 conditions per place. [2023-08-31 22:28:31,266 INFO L82 GeneralOperation]: Start removeDead. Operand has 479 places, 451 transitions, 1798 flow [2023-08-31 22:28:31,269 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 479 places, 451 transitions, 1798 flow [2023-08-31 22:28:31,269 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:28:31,270 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 479 places, 451 transitions, 1798 flow [2023-08-31 22:28:31,270 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 479 places, 451 transitions, 1798 flow [2023-08-31 22:28:31,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 479 places, 451 transitions, 1798 flow [2023-08-31 22:28:31,431 INFO L130 PetriNetUnfolder]: 57/925 cut-off events. [2023-08-31 22:28:31,431 INFO L131 PetriNetUnfolder]: For 4032/4032 co-relation queries the response was YES. [2023-08-31 22:28:31,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1416 conditions, 925 events. 57/925 cut-off events. For 4032/4032 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 2895 event pairs, 0 based on Foata normal form. 0/724 useless extension candidates. Maximal degree in co-relation 1342. Up to 58 conditions per place. [2023-08-31 22:28:31,492 INFO L119 LiptonReduction]: Number of co-enabled transitions 172872 [2023-08-31 22:28:36,534 INFO L134 LiptonReduction]: Checked pairs total: 917483 [2023-08-31 22:28:36,534 INFO L136 LiptonReduction]: Total number of compositions: 195 [2023-08-31 22:28:36,535 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:28:36,536 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:28:36,536 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:28:36,603 INFO L130 PetriNetUnfolder]: 27/478 cut-off events. [2023-08-31 22:28:36,603 INFO L131 PetriNetUnfolder]: For 4032/4032 co-relation queries the response was YES. [2023-08-31 22:28:36,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:28:36,603 INFO L208 CegarLoopForPetriNet]: trace histogram [29, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:28:36,604 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:28:36,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:28:36,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1001139411, now seen corresponding path program 1 times [2023-08-31 22:28:36,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:28:36,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688691627] [2023-08-31 22:28:36,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:28:36,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:28:36,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:28:36,638 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:28:36,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:28:36,686 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:28:36,686 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:28:36,686 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:28:36,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-31 22:28:36,687 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:28:36,687 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:28:36,687 WARN L233 ceAbstractionStarter]: 28 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:28:36,687 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 29 thread instances. [2023-08-31 22:28:36,746 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:28:36,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 495 places, 466 transitions, 1889 flow [2023-08-31 22:28:36,951 INFO L130 PetriNetUnfolder]: 59/957 cut-off events. [2023-08-31 22:28:36,951 INFO L131 PetriNetUnfolder]: For 4466/4466 co-relation queries the response was YES. [2023-08-31 22:28:36,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1480 conditions, 957 events. 59/957 cut-off events. For 4466/4466 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 3054 event pairs, 0 based on Foata normal form. 0/749 useless extension candidates. Maximal degree in co-relation 1405. Up to 60 conditions per place. [2023-08-31 22:28:36,974 INFO L82 GeneralOperation]: Start removeDead. Operand has 495 places, 466 transitions, 1889 flow [2023-08-31 22:28:36,978 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 495 places, 466 transitions, 1889 flow [2023-08-31 22:28:36,978 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:28:36,978 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 495 places, 466 transitions, 1889 flow [2023-08-31 22:28:36,978 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 495 places, 466 transitions, 1889 flow [2023-08-31 22:28:36,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 495 places, 466 transitions, 1889 flow [2023-08-31 22:28:37,199 INFO L130 PetriNetUnfolder]: 59/957 cut-off events. [2023-08-31 22:28:37,199 INFO L131 PetriNetUnfolder]: For 4466/4466 co-relation queries the response was YES. [2023-08-31 22:28:37,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1480 conditions, 957 events. 59/957 cut-off events. For 4466/4466 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 3054 event pairs, 0 based on Foata normal form. 0/749 useless extension candidates. Maximal degree in co-relation 1405. Up to 60 conditions per place. [2023-08-31 22:28:37,275 INFO L119 LiptonReduction]: Number of co-enabled transitions 185136 [2023-08-31 22:28:42,517 INFO L134 LiptonReduction]: Checked pairs total: 1003096 [2023-08-31 22:28:42,518 INFO L136 LiptonReduction]: Total number of compositions: 201 [2023-08-31 22:28:42,518 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:28:42,519 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:28:42,519 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:28:42,577 INFO L130 PetriNetUnfolder]: 28/495 cut-off events. [2023-08-31 22:28:42,577 INFO L131 PetriNetUnfolder]: For 4466/4466 co-relation queries the response was YES. [2023-08-31 22:28:42,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:28:42,577 INFO L208 CegarLoopForPetriNet]: trace histogram [30, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:28:42,578 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:28:42,578 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:28:42,578 INFO L85 PathProgramCache]: Analyzing trace with hash 839137567, now seen corresponding path program 1 times [2023-08-31 22:28:42,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:28:42,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556689024] [2023-08-31 22:28:42,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:28:42,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:28:42,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:28:42,610 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:28:42,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:28:42,664 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:28:42,664 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:28:42,665 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:28:42,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-31 22:28:42,665 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:28:42,665 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:28:42,666 WARN L233 ceAbstractionStarter]: 29 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:28:42,666 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 30 thread instances. [2023-08-31 22:28:42,727 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:28:42,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 511 places, 481 transitions, 1982 flow [2023-08-31 22:28:42,912 INFO L130 PetriNetUnfolder]: 61/989 cut-off events. [2023-08-31 22:28:42,912 INFO L131 PetriNetUnfolder]: For 4930/4930 co-relation queries the response was YES. [2023-08-31 22:28:42,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1545 conditions, 989 events. 61/989 cut-off events. For 4930/4930 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 3122 event pairs, 0 based on Foata normal form. 0/774 useless extension candidates. Maximal degree in co-relation 1469. Up to 62 conditions per place. [2023-08-31 22:28:42,934 INFO L82 GeneralOperation]: Start removeDead. Operand has 511 places, 481 transitions, 1982 flow [2023-08-31 22:28:42,938 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 511 places, 481 transitions, 1982 flow [2023-08-31 22:28:42,938 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:28:42,938 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 511 places, 481 transitions, 1982 flow [2023-08-31 22:28:42,938 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 511 places, 481 transitions, 1982 flow [2023-08-31 22:28:42,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 511 places, 481 transitions, 1982 flow [2023-08-31 22:28:43,104 INFO L130 PetriNetUnfolder]: 61/989 cut-off events. [2023-08-31 22:28:43,104 INFO L131 PetriNetUnfolder]: For 4930/4930 co-relation queries the response was YES. [2023-08-31 22:28:43,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1545 conditions, 989 events. 61/989 cut-off events. For 4930/4930 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 3122 event pairs, 0 based on Foata normal form. 0/774 useless extension candidates. Maximal degree in co-relation 1469. Up to 62 conditions per place. [2023-08-31 22:28:43,184 INFO L119 LiptonReduction]: Number of co-enabled transitions 197820 [2023-08-31 22:28:48,635 INFO L134 LiptonReduction]: Checked pairs total: 1071314 [2023-08-31 22:28:48,635 INFO L136 LiptonReduction]: Total number of compositions: 207 [2023-08-31 22:28:48,636 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:28:48,637 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:28:48,637 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:28:48,700 INFO L130 PetriNetUnfolder]: 29/512 cut-off events. [2023-08-31 22:28:48,700 INFO L131 PetriNetUnfolder]: For 4930/4930 co-relation queries the response was YES. [2023-08-31 22:28:48,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:28:48,701 INFO L208 CegarLoopForPetriNet]: trace histogram [31, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:28:48,701 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:28:48,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:28:48,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1414319404, now seen corresponding path program 1 times [2023-08-31 22:28:48,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:28:48,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945779031] [2023-08-31 22:28:48,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:28:48,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:28:48,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:28:48,734 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:28:48,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:28:48,819 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:28:48,820 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:28:48,820 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:28:48,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-31 22:28:48,820 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:28:48,820 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:28:48,821 WARN L233 ceAbstractionStarter]: 30 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:28:48,821 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 31 thread instances. [2023-08-31 22:28:48,883 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:28:48,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 527 places, 496 transitions, 2077 flow [2023-08-31 22:28:49,095 INFO L130 PetriNetUnfolder]: 63/1021 cut-off events. [2023-08-31 22:28:49,095 INFO L131 PetriNetUnfolder]: For 5425/5425 co-relation queries the response was YES. [2023-08-31 22:28:49,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1611 conditions, 1021 events. 63/1021 cut-off events. For 5425/5425 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 3222 event pairs, 0 based on Foata normal form. 0/799 useless extension candidates. Maximal degree in co-relation 1534. Up to 64 conditions per place. [2023-08-31 22:28:49,118 INFO L82 GeneralOperation]: Start removeDead. Operand has 527 places, 496 transitions, 2077 flow [2023-08-31 22:28:49,122 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 527 places, 496 transitions, 2077 flow [2023-08-31 22:28:49,122 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:28:49,122 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 527 places, 496 transitions, 2077 flow [2023-08-31 22:28:49,123 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 527 places, 496 transitions, 2077 flow [2023-08-31 22:28:49,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 527 places, 496 transitions, 2077 flow [2023-08-31 22:28:49,315 INFO L130 PetriNetUnfolder]: 63/1021 cut-off events. [2023-08-31 22:28:49,315 INFO L131 PetriNetUnfolder]: For 5425/5425 co-relation queries the response was YES. [2023-08-31 22:28:49,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1611 conditions, 1021 events. 63/1021 cut-off events. For 5425/5425 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 3222 event pairs, 0 based on Foata normal form. 0/799 useless extension candidates. Maximal degree in co-relation 1534. Up to 64 conditions per place. [2023-08-31 22:28:49,394 INFO L119 LiptonReduction]: Number of co-enabled transitions 210924 [2023-08-31 22:28:55,100 INFO L134 LiptonReduction]: Checked pairs total: 1119524 [2023-08-31 22:28:55,100 INFO L136 LiptonReduction]: Total number of compositions: 213 [2023-08-31 22:28:55,101 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:28:55,101 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:28:55,101 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:28:55,168 INFO L130 PetriNetUnfolder]: 30/529 cut-off events. [2023-08-31 22:28:55,168 INFO L131 PetriNetUnfolder]: For 5425/5425 co-relation queries the response was YES. [2023-08-31 22:28:55,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:28:55,169 INFO L208 CegarLoopForPetriNet]: trace histogram [32, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:28:55,169 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:28:55,169 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:28:55,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1689274513, now seen corresponding path program 1 times [2023-08-31 22:28:55,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:28:55,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72164805] [2023-08-31 22:28:55,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:28:55,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:28:55,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:28:55,206 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:28:55,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:28:55,259 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:28:55,259 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:28:55,260 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:28:55,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-31 22:28:55,260 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:28:55,260 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:28:55,261 WARN L233 ceAbstractionStarter]: 31 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:28:55,261 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 32 thread instances. [2023-08-31 22:28:55,326 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:28:55,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 543 places, 511 transitions, 2174 flow [2023-08-31 22:28:55,601 INFO L130 PetriNetUnfolder]: 65/1053 cut-off events. [2023-08-31 22:28:55,601 INFO L131 PetriNetUnfolder]: For 5952/5952 co-relation queries the response was YES. [2023-08-31 22:28:55,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1678 conditions, 1053 events. 65/1053 cut-off events. For 5952/5952 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 3315 event pairs, 0 based on Foata normal form. 0/824 useless extension candidates. Maximal degree in co-relation 1600. Up to 66 conditions per place. [2023-08-31 22:28:55,625 INFO L82 GeneralOperation]: Start removeDead. Operand has 543 places, 511 transitions, 2174 flow [2023-08-31 22:28:55,629 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 543 places, 511 transitions, 2174 flow [2023-08-31 22:28:55,629 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:28:55,629 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 543 places, 511 transitions, 2174 flow [2023-08-31 22:28:55,629 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 543 places, 511 transitions, 2174 flow [2023-08-31 22:28:55,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 543 places, 511 transitions, 2174 flow [2023-08-31 22:28:55,824 INFO L130 PetriNetUnfolder]: 65/1053 cut-off events. [2023-08-31 22:28:55,824 INFO L131 PetriNetUnfolder]: For 5952/5952 co-relation queries the response was YES. [2023-08-31 22:28:55,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1678 conditions, 1053 events. 65/1053 cut-off events. For 5952/5952 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 3315 event pairs, 0 based on Foata normal form. 0/824 useless extension candidates. Maximal degree in co-relation 1600. Up to 66 conditions per place. [2023-08-31 22:28:55,909 INFO L119 LiptonReduction]: Number of co-enabled transitions 224448 [2023-08-31 22:29:01,810 INFO L134 LiptonReduction]: Checked pairs total: 1199334 [2023-08-31 22:29:01,810 INFO L136 LiptonReduction]: Total number of compositions: 219 [2023-08-31 22:29:01,811 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:29:01,812 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:29:01,812 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:29:01,884 INFO L130 PetriNetUnfolder]: 31/546 cut-off events. [2023-08-31 22:29:01,884 INFO L131 PetriNetUnfolder]: For 5952/5952 co-relation queries the response was YES. [2023-08-31 22:29:01,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:29:01,884 INFO L208 CegarLoopForPetriNet]: trace histogram [33, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:29:01,884 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:29:01,884 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:29:01,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1845919219, now seen corresponding path program 1 times [2023-08-31 22:29:01,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:29:01,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676847968] [2023-08-31 22:29:01,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:29:01,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:29:01,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:29:01,928 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:29:01,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:29:01,988 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:29:01,989 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:29:01,989 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:29:01,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-31 22:29:01,989 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:29:01,990 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:29:01,990 WARN L233 ceAbstractionStarter]: 32 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:29:01,990 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 33 thread instances. [2023-08-31 22:29:02,061 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:29:02,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 559 places, 526 transitions, 2273 flow [2023-08-31 22:29:02,328 INFO L130 PetriNetUnfolder]: 67/1085 cut-off events. [2023-08-31 22:29:02,328 INFO L131 PetriNetUnfolder]: For 6512/6512 co-relation queries the response was YES. [2023-08-31 22:29:02,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1746 conditions, 1085 events. 67/1085 cut-off events. For 6512/6512 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 3409 event pairs, 0 based on Foata normal form. 0/849 useless extension candidates. Maximal degree in co-relation 1667. Up to 68 conditions per place. [2023-08-31 22:29:02,350 INFO L82 GeneralOperation]: Start removeDead. Operand has 559 places, 526 transitions, 2273 flow [2023-08-31 22:29:02,355 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 559 places, 526 transitions, 2273 flow [2023-08-31 22:29:02,355 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:29:02,355 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 559 places, 526 transitions, 2273 flow [2023-08-31 22:29:02,355 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 559 places, 526 transitions, 2273 flow [2023-08-31 22:29:02,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 559 places, 526 transitions, 2273 flow [2023-08-31 22:29:02,556 INFO L130 PetriNetUnfolder]: 67/1085 cut-off events. [2023-08-31 22:29:02,556 INFO L131 PetriNetUnfolder]: For 6512/6512 co-relation queries the response was YES. [2023-08-31 22:29:02,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1746 conditions, 1085 events. 67/1085 cut-off events. For 6512/6512 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 3409 event pairs, 0 based on Foata normal form. 0/849 useless extension candidates. Maximal degree in co-relation 1667. Up to 68 conditions per place. [2023-08-31 22:29:02,644 INFO L119 LiptonReduction]: Number of co-enabled transitions 238392 [2023-08-31 22:29:08,616 INFO L134 LiptonReduction]: Checked pairs total: 1281436 [2023-08-31 22:29:08,617 INFO L136 LiptonReduction]: Total number of compositions: 225 [2023-08-31 22:29:08,618 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:29:08,618 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:29:08,618 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:29:08,698 INFO L130 PetriNetUnfolder]: 32/563 cut-off events. [2023-08-31 22:29:08,698 INFO L131 PetriNetUnfolder]: For 6512/6512 co-relation queries the response was YES. [2023-08-31 22:29:08,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:29:08,699 INFO L208 CegarLoopForPetriNet]: trace histogram [34, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:29:08,699 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:29:08,699 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:29:08,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1646794139, now seen corresponding path program 1 times [2023-08-31 22:29:08,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:29:08,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974357203] [2023-08-31 22:29:08,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:29:08,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:29:08,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:29:08,737 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:29:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:29:08,797 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:29:08,797 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:29:08,797 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:29:08,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-31 22:29:08,797 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:29:08,798 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:29:08,798 WARN L233 ceAbstractionStarter]: 33 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:29:08,798 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 34 thread instances. [2023-08-31 22:29:08,867 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:29:08,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 575 places, 541 transitions, 2374 flow [2023-08-31 22:29:09,242 INFO L130 PetriNetUnfolder]: 69/1117 cut-off events. [2023-08-31 22:29:09,242 INFO L131 PetriNetUnfolder]: For 7106/7106 co-relation queries the response was YES. [2023-08-31 22:29:09,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1815 conditions, 1117 events. 69/1117 cut-off events. For 7106/7106 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 3518 event pairs, 0 based on Foata normal form. 0/874 useless extension candidates. Maximal degree in co-relation 1735. Up to 70 conditions per place. [2023-08-31 22:29:09,264 INFO L82 GeneralOperation]: Start removeDead. Operand has 575 places, 541 transitions, 2374 flow [2023-08-31 22:29:09,268 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 575 places, 541 transitions, 2374 flow [2023-08-31 22:29:09,268 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:29:09,268 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 575 places, 541 transitions, 2374 flow [2023-08-31 22:29:09,269 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 575 places, 541 transitions, 2374 flow [2023-08-31 22:29:09,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 575 places, 541 transitions, 2374 flow [2023-08-31 22:29:09,496 INFO L130 PetriNetUnfolder]: 69/1117 cut-off events. [2023-08-31 22:29:09,496 INFO L131 PetriNetUnfolder]: For 7106/7106 co-relation queries the response was YES. [2023-08-31 22:29:09,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1815 conditions, 1117 events. 69/1117 cut-off events. For 7106/7106 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 3518 event pairs, 0 based on Foata normal form. 0/874 useless extension candidates. Maximal degree in co-relation 1735. Up to 70 conditions per place. [2023-08-31 22:29:09,596 INFO L119 LiptonReduction]: Number of co-enabled transitions 252756 [2023-08-31 22:29:15,778 INFO L134 LiptonReduction]: Checked pairs total: 1371688 [2023-08-31 22:29:15,779 INFO L136 LiptonReduction]: Total number of compositions: 231 [2023-08-31 22:29:15,779 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:29:15,780 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:29:15,780 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:29:15,866 INFO L130 PetriNetUnfolder]: 33/580 cut-off events. [2023-08-31 22:29:15,867 INFO L131 PetriNetUnfolder]: For 7106/7106 co-relation queries the response was YES. [2023-08-31 22:29:15,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:29:15,867 INFO L208 CegarLoopForPetriNet]: trace histogram [35, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:29:15,867 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:29:15,868 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:29:15,868 INFO L85 PathProgramCache]: Analyzing trace with hash -852041040, now seen corresponding path program 1 times [2023-08-31 22:29:15,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:29:15,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369339369] [2023-08-31 22:29:15,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:29:15,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:29:15,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:29:15,906 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:29:15,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:29:15,977 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:29:15,978 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:29:15,978 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:29:15,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-31 22:29:15,978 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:29:15,979 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:29:15,979 WARN L233 ceAbstractionStarter]: 34 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:29:15,979 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 35 thread instances. [2023-08-31 22:29:16,043 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:29:16,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 591 places, 556 transitions, 2477 flow [2023-08-31 22:29:16,289 INFO L130 PetriNetUnfolder]: 71/1149 cut-off events. [2023-08-31 22:29:16,289 INFO L131 PetriNetUnfolder]: For 7735/7735 co-relation queries the response was YES. [2023-08-31 22:29:16,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1885 conditions, 1149 events. 71/1149 cut-off events. For 7735/7735 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 3601 event pairs, 0 based on Foata normal form. 0/899 useless extension candidates. Maximal degree in co-relation 1804. Up to 72 conditions per place. [2023-08-31 22:29:16,319 INFO L82 GeneralOperation]: Start removeDead. Operand has 591 places, 556 transitions, 2477 flow [2023-08-31 22:29:16,326 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 591 places, 556 transitions, 2477 flow [2023-08-31 22:29:16,326 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:29:16,326 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 591 places, 556 transitions, 2477 flow [2023-08-31 22:29:16,326 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 591 places, 556 transitions, 2477 flow [2023-08-31 22:29:16,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 591 places, 556 transitions, 2477 flow [2023-08-31 22:29:16,607 INFO L130 PetriNetUnfolder]: 71/1149 cut-off events. [2023-08-31 22:29:16,607 INFO L131 PetriNetUnfolder]: For 7735/7735 co-relation queries the response was YES. [2023-08-31 22:29:16,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1885 conditions, 1149 events. 71/1149 cut-off events. For 7735/7735 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 3601 event pairs, 0 based on Foata normal form. 0/899 useless extension candidates. Maximal degree in co-relation 1804. Up to 72 conditions per place. [2023-08-31 22:29:16,700 INFO L119 LiptonReduction]: Number of co-enabled transitions 267540 [2023-08-31 22:29:22,964 INFO L134 LiptonReduction]: Checked pairs total: 1436979 [2023-08-31 22:29:22,965 INFO L136 LiptonReduction]: Total number of compositions: 237 [2023-08-31 22:29:22,965 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:29:22,966 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:29:22,966 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:29:23,076 INFO L130 PetriNetUnfolder]: 34/597 cut-off events. [2023-08-31 22:29:23,076 INFO L131 PetriNetUnfolder]: For 7735/7735 co-relation queries the response was YES. [2023-08-31 22:29:23,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:29:23,077 INFO L208 CegarLoopForPetriNet]: trace histogram [36, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:29:23,077 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:29:23,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:29:23,077 INFO L85 PathProgramCache]: Analyzing trace with hash 2061756911, now seen corresponding path program 1 times [2023-08-31 22:29:23,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:29:23,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090111907] [2023-08-31 22:29:23,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:29:23,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:29:23,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:29:23,117 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:29:23,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:29:23,196 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:29:23,196 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:29:23,197 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:29:23,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-31 22:29:23,197 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:29:23,197 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:29:23,197 WARN L233 ceAbstractionStarter]: 35 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:29:23,198 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 36 thread instances. [2023-08-31 22:29:23,298 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:29:23,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 607 places, 571 transitions, 2582 flow [2023-08-31 22:29:23,576 INFO L130 PetriNetUnfolder]: 73/1181 cut-off events. [2023-08-31 22:29:23,576 INFO L131 PetriNetUnfolder]: For 8400/8400 co-relation queries the response was YES. [2023-08-31 22:29:23,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1956 conditions, 1181 events. 73/1181 cut-off events. For 8400/8400 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 3753 event pairs, 0 based on Foata normal form. 0/924 useless extension candidates. Maximal degree in co-relation 1874. Up to 74 conditions per place. [2023-08-31 22:29:23,608 INFO L82 GeneralOperation]: Start removeDead. Operand has 607 places, 571 transitions, 2582 flow [2023-08-31 22:29:23,614 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 607 places, 571 transitions, 2582 flow [2023-08-31 22:29:23,614 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:29:23,614 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 607 places, 571 transitions, 2582 flow [2023-08-31 22:29:23,614 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 607 places, 571 transitions, 2582 flow [2023-08-31 22:29:23,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 607 places, 571 transitions, 2582 flow [2023-08-31 22:29:23,868 INFO L130 PetriNetUnfolder]: 73/1181 cut-off events. [2023-08-31 22:29:23,868 INFO L131 PetriNetUnfolder]: For 8400/8400 co-relation queries the response was YES. [2023-08-31 22:29:23,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1956 conditions, 1181 events. 73/1181 cut-off events. For 8400/8400 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 3753 event pairs, 0 based on Foata normal form. 0/924 useless extension candidates. Maximal degree in co-relation 1874. Up to 74 conditions per place. [2023-08-31 22:29:23,983 INFO L119 LiptonReduction]: Number of co-enabled transitions 282744 [2023-08-31 22:29:30,515 INFO L134 LiptonReduction]: Checked pairs total: 1519177 [2023-08-31 22:29:30,515 INFO L136 LiptonReduction]: Total number of compositions: 243 [2023-08-31 22:29:30,516 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:29:30,516 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:29:30,516 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:29:30,609 INFO L130 PetriNetUnfolder]: 35/614 cut-off events. [2023-08-31 22:29:30,609 INFO L131 PetriNetUnfolder]: For 8400/8400 co-relation queries the response was YES. [2023-08-31 22:29:30,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:29:30,609 INFO L208 CegarLoopForPetriNet]: trace histogram [37, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:29:30,610 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:29:30,610 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:29:30,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1224520301, now seen corresponding path program 1 times [2023-08-31 22:29:30,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:29:30,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11223726] [2023-08-31 22:29:30,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:29:30,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:29:30,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:29:30,646 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:29:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:29:30,716 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:29:30,716 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:29:30,717 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:29:30,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-08-31 22:29:30,717 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:29:30,717 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:29:30,717 WARN L233 ceAbstractionStarter]: 36 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:29:30,717 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 37 thread instances. [2023-08-31 22:29:30,792 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:29:30,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 623 places, 586 transitions, 2689 flow [2023-08-31 22:29:31,235 INFO L130 PetriNetUnfolder]: 75/1213 cut-off events. [2023-08-31 22:29:31,235 INFO L131 PetriNetUnfolder]: For 9102/9102 co-relation queries the response was YES. [2023-08-31 22:29:31,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2028 conditions, 1213 events. 75/1213 cut-off events. For 9102/9102 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 3835 event pairs, 0 based on Foata normal form. 0/949 useless extension candidates. Maximal degree in co-relation 1945. Up to 76 conditions per place. [2023-08-31 22:29:31,262 INFO L82 GeneralOperation]: Start removeDead. Operand has 623 places, 586 transitions, 2689 flow [2023-08-31 22:29:31,268 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 623 places, 586 transitions, 2689 flow [2023-08-31 22:29:31,268 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:29:31,268 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 623 places, 586 transitions, 2689 flow [2023-08-31 22:29:31,268 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 623 places, 586 transitions, 2689 flow [2023-08-31 22:29:31,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 623 places, 586 transitions, 2689 flow [2023-08-31 22:29:31,529 INFO L130 PetriNetUnfolder]: 75/1213 cut-off events. [2023-08-31 22:29:31,529 INFO L131 PetriNetUnfolder]: For 9102/9102 co-relation queries the response was YES. [2023-08-31 22:29:31,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2028 conditions, 1213 events. 75/1213 cut-off events. For 9102/9102 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 3835 event pairs, 0 based on Foata normal form. 0/949 useless extension candidates. Maximal degree in co-relation 1945. Up to 76 conditions per place. [2023-08-31 22:29:31,646 INFO L119 LiptonReduction]: Number of co-enabled transitions 298368 [2023-08-31 22:29:38,276 INFO L134 LiptonReduction]: Checked pairs total: 1615330 [2023-08-31 22:29:38,277 INFO L136 LiptonReduction]: Total number of compositions: 249 [2023-08-31 22:29:38,277 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:29:38,278 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:29:38,278 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:29:38,376 INFO L130 PetriNetUnfolder]: 36/631 cut-off events. [2023-08-31 22:29:38,376 INFO L131 PetriNetUnfolder]: For 9102/9102 co-relation queries the response was YES. [2023-08-31 22:29:38,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:29:38,377 INFO L208 CegarLoopForPetriNet]: trace histogram [38, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:29:38,377 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:29:38,377 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:29:38,377 INFO L85 PathProgramCache]: Analyzing trace with hash 720948793, now seen corresponding path program 1 times [2023-08-31 22:29:38,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:29:38,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924534675] [2023-08-31 22:29:38,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:29:38,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:29:38,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:29:38,417 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:29:38,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:29:38,491 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:29:38,491 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:29:38,491 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:29:38,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-08-31 22:29:38,492 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:29:38,492 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:29:38,492 WARN L233 ceAbstractionStarter]: 37 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:29:38,492 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 38 thread instances. [2023-08-31 22:29:38,570 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:29:38,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 639 places, 601 transitions, 2798 flow [2023-08-31 22:29:38,910 INFO L130 PetriNetUnfolder]: 77/1245 cut-off events. [2023-08-31 22:29:38,911 INFO L131 PetriNetUnfolder]: For 9842/9842 co-relation queries the response was YES. [2023-08-31 22:29:38,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2101 conditions, 1245 events. 77/1245 cut-off events. For 9842/9842 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 3925 event pairs, 0 based on Foata normal form. 0/974 useless extension candidates. Maximal degree in co-relation 2017. Up to 78 conditions per place. [2023-08-31 22:29:38,944 INFO L82 GeneralOperation]: Start removeDead. Operand has 639 places, 601 transitions, 2798 flow [2023-08-31 22:29:38,951 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 639 places, 601 transitions, 2798 flow [2023-08-31 22:29:38,952 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:29:38,952 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 639 places, 601 transitions, 2798 flow [2023-08-31 22:29:38,952 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 639 places, 601 transitions, 2798 flow [2023-08-31 22:29:38,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 639 places, 601 transitions, 2798 flow [2023-08-31 22:29:39,308 INFO L130 PetriNetUnfolder]: 77/1245 cut-off events. [2023-08-31 22:29:39,308 INFO L131 PetriNetUnfolder]: For 9842/9842 co-relation queries the response was YES. [2023-08-31 22:29:39,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2101 conditions, 1245 events. 77/1245 cut-off events. For 9842/9842 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 3925 event pairs, 0 based on Foata normal form. 0/974 useless extension candidates. Maximal degree in co-relation 2017. Up to 78 conditions per place. [2023-08-31 22:29:39,420 INFO L119 LiptonReduction]: Number of co-enabled transitions 314412 [2023-08-31 22:29:46,384 INFO L134 LiptonReduction]: Checked pairs total: 1685663 [2023-08-31 22:29:46,384 INFO L136 LiptonReduction]: Total number of compositions: 255 [2023-08-31 22:29:46,385 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:29:46,386 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:29:46,386 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:29:46,492 INFO L130 PetriNetUnfolder]: 37/648 cut-off events. [2023-08-31 22:29:46,493 INFO L131 PetriNetUnfolder]: For 9842/9842 co-relation queries the response was YES. [2023-08-31 22:29:46,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:29:46,493 INFO L208 CegarLoopForPetriNet]: trace histogram [39, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:29:46,493 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:29:46,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:29:46,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1758596653, now seen corresponding path program 1 times [2023-08-31 22:29:46,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:29:46,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911159182] [2023-08-31 22:29:46,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:29:46,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:29:46,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:29:46,536 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:29:46,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:29:46,615 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:29:46,616 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:29:46,616 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:29:46,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-08-31 22:29:46,616 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:29:46,616 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:29:46,616 WARN L233 ceAbstractionStarter]: 38 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:29:46,616 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 39 thread instances. [2023-08-31 22:29:46,684 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:29:46,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 655 places, 616 transitions, 2909 flow [2023-08-31 22:29:47,016 INFO L130 PetriNetUnfolder]: 79/1277 cut-off events. [2023-08-31 22:29:47,017 INFO L131 PetriNetUnfolder]: For 10621/10621 co-relation queries the response was YES. [2023-08-31 22:29:47,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2175 conditions, 1277 events. 79/1277 cut-off events. For 10621/10621 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 4045 event pairs, 0 based on Foata normal form. 0/999 useless extension candidates. Maximal degree in co-relation 2090. Up to 80 conditions per place. [2023-08-31 22:29:47,054 INFO L82 GeneralOperation]: Start removeDead. Operand has 655 places, 616 transitions, 2909 flow [2023-08-31 22:29:47,061 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 655 places, 616 transitions, 2909 flow [2023-08-31 22:29:47,061 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:29:47,061 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 655 places, 616 transitions, 2909 flow [2023-08-31 22:29:47,061 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 655 places, 616 transitions, 2909 flow [2023-08-31 22:29:47,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 655 places, 616 transitions, 2909 flow [2023-08-31 22:29:47,361 INFO L130 PetriNetUnfolder]: 79/1277 cut-off events. [2023-08-31 22:29:47,361 INFO L131 PetriNetUnfolder]: For 10621/10621 co-relation queries the response was YES. [2023-08-31 22:29:47,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2175 conditions, 1277 events. 79/1277 cut-off events. For 10621/10621 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 4045 event pairs, 0 based on Foata normal form. 0/999 useless extension candidates. Maximal degree in co-relation 2090. Up to 80 conditions per place. [2023-08-31 22:29:47,501 INFO L119 LiptonReduction]: Number of co-enabled transitions 330876 [2023-08-31 22:29:54,649 INFO L134 LiptonReduction]: Checked pairs total: 1780803 [2023-08-31 22:29:54,649 INFO L136 LiptonReduction]: Total number of compositions: 261 [2023-08-31 22:29:54,650 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:29:54,651 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:29:54,651 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:29:54,763 INFO L130 PetriNetUnfolder]: 38/665 cut-off events. [2023-08-31 22:29:54,763 INFO L131 PetriNetUnfolder]: For 10621/10621 co-relation queries the response was YES. [2023-08-31 22:29:54,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:29:54,763 INFO L208 CegarLoopForPetriNet]: trace histogram [40, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:29:54,763 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:29:54,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:29:54,764 INFO L85 PathProgramCache]: Analyzing trace with hash -554531089, now seen corresponding path program 1 times [2023-08-31 22:29:54,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:29:54,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095905520] [2023-08-31 22:29:54,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:29:54,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:29:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:29:54,813 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:29:54,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:29:54,868 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:29:54,868 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:29:54,869 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:29:54,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-08-31 22:29:54,869 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:29:54,869 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:29:54,869 WARN L233 ceAbstractionStarter]: 39 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:29:54,870 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 40 thread instances. [2023-08-31 22:29:55,003 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:29:55,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 671 places, 631 transitions, 3022 flow [2023-08-31 22:29:55,345 INFO L130 PetriNetUnfolder]: 81/1309 cut-off events. [2023-08-31 22:29:55,346 INFO L131 PetriNetUnfolder]: For 11440/11440 co-relation queries the response was YES. [2023-08-31 22:29:55,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2250 conditions, 1309 events. 81/1309 cut-off events. For 11440/11440 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 4141 event pairs, 0 based on Foata normal form. 0/1024 useless extension candidates. Maximal degree in co-relation 2164. Up to 82 conditions per place. [2023-08-31 22:29:55,384 INFO L82 GeneralOperation]: Start removeDead. Operand has 671 places, 631 transitions, 3022 flow [2023-08-31 22:29:55,391 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 671 places, 631 transitions, 3022 flow [2023-08-31 22:29:55,391 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:29:55,391 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 671 places, 631 transitions, 3022 flow [2023-08-31 22:29:55,391 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 671 places, 631 transitions, 3022 flow [2023-08-31 22:29:55,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 671 places, 631 transitions, 3022 flow [2023-08-31 22:29:55,703 INFO L130 PetriNetUnfolder]: 81/1309 cut-off events. [2023-08-31 22:29:55,703 INFO L131 PetriNetUnfolder]: For 11440/11440 co-relation queries the response was YES. [2023-08-31 22:29:55,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2250 conditions, 1309 events. 81/1309 cut-off events. For 11440/11440 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 4141 event pairs, 0 based on Foata normal form. 0/1024 useless extension candidates. Maximal degree in co-relation 2164. Up to 82 conditions per place. [2023-08-31 22:29:55,847 INFO L119 LiptonReduction]: Number of co-enabled transitions 347760 [2023-08-31 22:30:03,117 INFO L134 LiptonReduction]: Checked pairs total: 1877624 [2023-08-31 22:30:03,117 INFO L136 LiptonReduction]: Total number of compositions: 267 [2023-08-31 22:30:03,118 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:30:03,118 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:30:03,118 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:30:03,233 INFO L130 PetriNetUnfolder]: 39/682 cut-off events. [2023-08-31 22:30:03,234 INFO L131 PetriNetUnfolder]: For 11440/11440 co-relation queries the response was YES. [2023-08-31 22:30:03,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:30:03,234 INFO L208 CegarLoopForPetriNet]: trace histogram [41, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:30:03,234 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:30:03,234 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:30:03,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1779248051, now seen corresponding path program 1 times [2023-08-31 22:30:03,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:30:03,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382548845] [2023-08-31 22:30:03,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:30:03,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:30:03,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:30:03,273 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:30:03,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:30:03,332 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:30:03,333 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:30:03,333 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:30:03,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-08-31 22:30:03,333 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:30:03,333 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:30:03,334 WARN L233 ceAbstractionStarter]: 40 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:30:03,334 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 41 thread instances. [2023-08-31 22:30:03,416 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:30:03,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 687 places, 646 transitions, 3137 flow [2023-08-31 22:30:03,822 INFO L130 PetriNetUnfolder]: 83/1341 cut-off events. [2023-08-31 22:30:03,822 INFO L131 PetriNetUnfolder]: For 12300/12300 co-relation queries the response was YES. [2023-08-31 22:30:03,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2326 conditions, 1341 events. 83/1341 cut-off events. For 12300/12300 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 4305 event pairs, 0 based on Foata normal form. 0/1049 useless extension candidates. Maximal degree in co-relation 2239. Up to 84 conditions per place. [2023-08-31 22:30:03,857 INFO L82 GeneralOperation]: Start removeDead. Operand has 687 places, 646 transitions, 3137 flow [2023-08-31 22:30:03,863 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 687 places, 646 transitions, 3137 flow [2023-08-31 22:30:03,863 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:30:03,863 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 687 places, 646 transitions, 3137 flow [2023-08-31 22:30:03,863 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 687 places, 646 transitions, 3137 flow [2023-08-31 22:30:03,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 687 places, 646 transitions, 3137 flow [2023-08-31 22:30:04,191 INFO L130 PetriNetUnfolder]: 83/1341 cut-off events. [2023-08-31 22:30:04,191 INFO L131 PetriNetUnfolder]: For 12300/12300 co-relation queries the response was YES. [2023-08-31 22:30:04,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2326 conditions, 1341 events. 83/1341 cut-off events. For 12300/12300 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 4305 event pairs, 0 based on Foata normal form. 0/1049 useless extension candidates. Maximal degree in co-relation 2239. Up to 84 conditions per place. [2023-08-31 22:30:04,344 INFO L119 LiptonReduction]: Number of co-enabled transitions 365064 [2023-08-31 22:30:11,669 INFO L134 LiptonReduction]: Checked pairs total: 1994630 [2023-08-31 22:30:11,669 INFO L136 LiptonReduction]: Total number of compositions: 273 [2023-08-31 22:30:11,670 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:30:11,670 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:30:11,670 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:30:11,792 INFO L130 PetriNetUnfolder]: 40/699 cut-off events. [2023-08-31 22:30:11,792 INFO L131 PetriNetUnfolder]: For 12300/12300 co-relation queries the response was YES. [2023-08-31 22:30:11,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:30:11,792 INFO L208 CegarLoopForPetriNet]: trace histogram [42, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:30:11,792 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:30:11,793 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:30:11,793 INFO L85 PathProgramCache]: Analyzing trace with hash -593294753, now seen corresponding path program 1 times [2023-08-31 22:30:11,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:30:11,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046968408] [2023-08-31 22:30:11,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:30:11,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:30:11,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:30:11,833 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:30:11,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:30:11,901 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:30:11,901 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:30:11,901 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:30:11,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-08-31 22:30:11,901 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:30:11,902 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:30:11,902 WARN L233 ceAbstractionStarter]: 41 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:30:11,902 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 42 thread instances. [2023-08-31 22:30:11,988 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:30:11,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 703 places, 661 transitions, 3254 flow [2023-08-31 22:30:12,428 INFO L130 PetriNetUnfolder]: 85/1373 cut-off events. [2023-08-31 22:30:12,428 INFO L131 PetriNetUnfolder]: For 13202/13202 co-relation queries the response was YES. [2023-08-31 22:30:12,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2403 conditions, 1373 events. 85/1373 cut-off events. For 13202/13202 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 4351 event pairs, 0 based on Foata normal form. 0/1074 useless extension candidates. Maximal degree in co-relation 2315. Up to 86 conditions per place. [2023-08-31 22:30:12,464 INFO L82 GeneralOperation]: Start removeDead. Operand has 703 places, 661 transitions, 3254 flow [2023-08-31 22:30:12,470 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 703 places, 661 transitions, 3254 flow [2023-08-31 22:30:12,470 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:30:12,470 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 703 places, 661 transitions, 3254 flow [2023-08-31 22:30:12,470 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 703 places, 661 transitions, 3254 flow [2023-08-31 22:30:12,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 703 places, 661 transitions, 3254 flow [2023-08-31 22:30:12,816 INFO L130 PetriNetUnfolder]: 85/1373 cut-off events. [2023-08-31 22:30:12,816 INFO L131 PetriNetUnfolder]: For 13202/13202 co-relation queries the response was YES. [2023-08-31 22:30:12,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2403 conditions, 1373 events. 85/1373 cut-off events. For 13202/13202 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 4351 event pairs, 0 based on Foata normal form. 0/1074 useless extension candidates. Maximal degree in co-relation 2315. Up to 86 conditions per place. [2023-08-31 22:30:12,977 INFO L119 LiptonReduction]: Number of co-enabled transitions 382788 [2023-08-31 22:30:20,796 INFO L134 LiptonReduction]: Checked pairs total: 2082404 [2023-08-31 22:30:20,796 INFO L136 LiptonReduction]: Total number of compositions: 279 [2023-08-31 22:30:20,797 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:30:20,797 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:30:20,797 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:30:20,928 INFO L130 PetriNetUnfolder]: 41/716 cut-off events. [2023-08-31 22:30:20,928 INFO L131 PetriNetUnfolder]: For 13202/13202 co-relation queries the response was YES. [2023-08-31 22:30:20,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:30:20,929 INFO L208 CegarLoopForPetriNet]: trace histogram [43, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:30:20,929 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:30:20,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:30:20,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1618268515, now seen corresponding path program 1 times [2023-08-31 22:30:20,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:30:20,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842554435] [2023-08-31 22:30:20,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:30:20,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:30:20,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:30:20,976 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:30:20,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:30:21,042 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:30:21,043 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:30:21,043 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:30:21,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-08-31 22:30:21,043 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:30:21,044 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:30:21,044 WARN L233 ceAbstractionStarter]: 42 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:30:21,044 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 43 thread instances. [2023-08-31 22:30:21,126 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:30:21,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 719 places, 676 transitions, 3373 flow [2023-08-31 22:30:21,512 INFO L130 PetriNetUnfolder]: 87/1405 cut-off events. [2023-08-31 22:30:21,512 INFO L131 PetriNetUnfolder]: For 14147/14147 co-relation queries the response was YES. [2023-08-31 22:30:21,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2481 conditions, 1405 events. 87/1405 cut-off events. For 14147/14147 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 4437 event pairs, 0 based on Foata normal form. 0/1099 useless extension candidates. Maximal degree in co-relation 2392. Up to 88 conditions per place. [2023-08-31 22:30:21,563 INFO L82 GeneralOperation]: Start removeDead. Operand has 719 places, 676 transitions, 3373 flow [2023-08-31 22:30:21,571 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 719 places, 676 transitions, 3373 flow [2023-08-31 22:30:21,571 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:30:21,571 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 719 places, 676 transitions, 3373 flow [2023-08-31 22:30:21,571 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 719 places, 676 transitions, 3373 flow [2023-08-31 22:30:21,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 719 places, 676 transitions, 3373 flow [2023-08-31 22:30:21,973 INFO L130 PetriNetUnfolder]: 87/1405 cut-off events. [2023-08-31 22:30:21,973 INFO L131 PetriNetUnfolder]: For 14147/14147 co-relation queries the response was YES. [2023-08-31 22:30:22,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2481 conditions, 1405 events. 87/1405 cut-off events. For 14147/14147 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 4437 event pairs, 0 based on Foata normal form. 0/1099 useless extension candidates. Maximal degree in co-relation 2392. Up to 88 conditions per place. [2023-08-31 22:30:22,142 INFO L119 LiptonReduction]: Number of co-enabled transitions 400932 [2023-08-31 22:30:29,909 INFO L134 LiptonReduction]: Checked pairs total: 2171377 [2023-08-31 22:30:29,909 INFO L136 LiptonReduction]: Total number of compositions: 285 [2023-08-31 22:30:29,910 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:30:29,911 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:30:29,911 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:30:30,043 INFO L130 PetriNetUnfolder]: 42/733 cut-off events. [2023-08-31 22:30:30,044 INFO L131 PetriNetUnfolder]: For 14147/14147 co-relation queries the response was YES. [2023-08-31 22:30:30,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:30:30,044 INFO L208 CegarLoopForPetriNet]: trace histogram [44, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:30:30,044 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:30:30,044 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:30:30,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1554390639, now seen corresponding path program 1 times [2023-08-31 22:30:30,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:30:30,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714980764] [2023-08-31 22:30:30,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:30:30,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:30:30,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:30:30,094 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:30:30,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:30:30,159 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:30:30,159 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:30:30,160 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:30:30,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-08-31 22:30:30,160 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:30:30,160 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:30:30,160 WARN L233 ceAbstractionStarter]: 43 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:30:30,161 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 44 thread instances. [2023-08-31 22:30:30,249 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:30:30,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 735 places, 691 transitions, 3494 flow [2023-08-31 22:30:30,636 INFO L130 PetriNetUnfolder]: 89/1437 cut-off events. [2023-08-31 22:30:30,636 INFO L131 PetriNetUnfolder]: For 15136/15136 co-relation queries the response was YES. [2023-08-31 22:30:30,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2560 conditions, 1437 events. 89/1437 cut-off events. For 15136/15136 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 4604 event pairs, 0 based on Foata normal form. 0/1124 useless extension candidates. Maximal degree in co-relation 2470. Up to 90 conditions per place. [2023-08-31 22:30:30,685 INFO L82 GeneralOperation]: Start removeDead. Operand has 735 places, 691 transitions, 3494 flow [2023-08-31 22:30:30,692 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 735 places, 691 transitions, 3494 flow [2023-08-31 22:30:30,693 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:30:30,693 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 735 places, 691 transitions, 3494 flow [2023-08-31 22:30:30,693 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 735 places, 691 transitions, 3494 flow [2023-08-31 22:30:30,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 735 places, 691 transitions, 3494 flow [2023-08-31 22:30:31,074 INFO L130 PetriNetUnfolder]: 89/1437 cut-off events. [2023-08-31 22:30:31,074 INFO L131 PetriNetUnfolder]: For 15136/15136 co-relation queries the response was YES. [2023-08-31 22:30:31,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2560 conditions, 1437 events. 89/1437 cut-off events. For 15136/15136 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 4604 event pairs, 0 based on Foata normal form. 0/1124 useless extension candidates. Maximal degree in co-relation 2470. Up to 90 conditions per place. [2023-08-31 22:30:31,364 INFO L119 LiptonReduction]: Number of co-enabled transitions 419496 [2023-08-31 22:30:39,296 INFO L134 LiptonReduction]: Checked pairs total: 2263513 [2023-08-31 22:30:39,297 INFO L136 LiptonReduction]: Total number of compositions: 291 [2023-08-31 22:30:39,298 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:30:39,298 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:30:39,298 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:30:39,506 INFO L130 PetriNetUnfolder]: 43/750 cut-off events. [2023-08-31 22:30:39,506 INFO L131 PetriNetUnfolder]: For 15136/15136 co-relation queries the response was YES. [2023-08-31 22:30:39,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:30:39,506 INFO L208 CegarLoopForPetriNet]: trace histogram [45, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:30:39,507 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:30:39,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:30:39,507 INFO L85 PathProgramCache]: Analyzing trace with hash 833645766, now seen corresponding path program 1 times [2023-08-31 22:30:39,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:30:39,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95443260] [2023-08-31 22:30:39,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:30:39,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:30:39,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:30:39,560 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:30:39,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:30:39,627 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:30:39,627 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:30:39,628 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:30:39,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-08-31 22:30:39,628 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:30:39,628 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:30:39,628 WARN L233 ceAbstractionStarter]: 44 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:30:39,628 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 45 thread instances. [2023-08-31 22:30:39,707 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:30:39,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 751 places, 706 transitions, 3617 flow [2023-08-31 22:30:40,125 INFO L130 PetriNetUnfolder]: 91/1469 cut-off events. [2023-08-31 22:30:40,125 INFO L131 PetriNetUnfolder]: For 16170/16170 co-relation queries the response was YES. [2023-08-31 22:30:40,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2640 conditions, 1469 events. 91/1469 cut-off events. For 16170/16170 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 4741 event pairs, 0 based on Foata normal form. 0/1149 useless extension candidates. Maximal degree in co-relation 2549. Up to 92 conditions per place. [2023-08-31 22:30:40,177 INFO L82 GeneralOperation]: Start removeDead. Operand has 751 places, 706 transitions, 3617 flow [2023-08-31 22:30:40,188 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 751 places, 706 transitions, 3617 flow [2023-08-31 22:30:40,188 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:30:40,189 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 751 places, 706 transitions, 3617 flow [2023-08-31 22:30:40,189 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 751 places, 706 transitions, 3617 flow [2023-08-31 22:30:40,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 751 places, 706 transitions, 3617 flow [2023-08-31 22:30:40,617 INFO L130 PetriNetUnfolder]: 91/1469 cut-off events. [2023-08-31 22:30:40,617 INFO L131 PetriNetUnfolder]: For 16170/16170 co-relation queries the response was YES. [2023-08-31 22:30:40,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2640 conditions, 1469 events. 91/1469 cut-off events. For 16170/16170 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 4741 event pairs, 0 based on Foata normal form. 0/1149 useless extension candidates. Maximal degree in co-relation 2549. Up to 92 conditions per place. [2023-08-31 22:30:40,812 INFO L119 LiptonReduction]: Number of co-enabled transitions 438480 [2023-08-31 22:30:48,951 INFO L134 LiptonReduction]: Checked pairs total: 2368866 [2023-08-31 22:30:48,952 INFO L136 LiptonReduction]: Total number of compositions: 297 [2023-08-31 22:30:48,952 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:30:48,953 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:30:48,953 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:30:49,102 INFO L130 PetriNetUnfolder]: 44/767 cut-off events. [2023-08-31 22:30:49,102 INFO L131 PetriNetUnfolder]: For 16170/16170 co-relation queries the response was YES. [2023-08-31 22:30:49,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:30:49,103 INFO L208 CegarLoopForPetriNet]: trace histogram [46, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:30:49,103 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:30:49,103 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:30:49,103 INFO L85 PathProgramCache]: Analyzing trace with hash -215411425, now seen corresponding path program 1 times [2023-08-31 22:30:49,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:30:49,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259448933] [2023-08-31 22:30:49,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:30:49,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:30:49,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:30:49,167 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:30:49,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:30:49,236 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:30:49,237 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:30:49,237 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:30:49,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-08-31 22:30:49,237 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:30:49,238 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:30:49,238 WARN L233 ceAbstractionStarter]: 45 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:30:49,238 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 46 thread instances. [2023-08-31 22:30:49,326 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:30:49,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 767 places, 721 transitions, 3742 flow [2023-08-31 22:30:49,779 INFO L130 PetriNetUnfolder]: 93/1501 cut-off events. [2023-08-31 22:30:49,779 INFO L131 PetriNetUnfolder]: For 17250/17250 co-relation queries the response was YES. [2023-08-31 22:30:49,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2721 conditions, 1501 events. 93/1501 cut-off events. For 17250/17250 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 4753 event pairs, 0 based on Foata normal form. 0/1174 useless extension candidates. Maximal degree in co-relation 2629. Up to 94 conditions per place. [2023-08-31 22:30:49,830 INFO L82 GeneralOperation]: Start removeDead. Operand has 767 places, 721 transitions, 3742 flow [2023-08-31 22:30:49,838 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 767 places, 721 transitions, 3742 flow [2023-08-31 22:30:49,838 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:30:49,838 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 767 places, 721 transitions, 3742 flow [2023-08-31 22:30:49,838 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 767 places, 721 transitions, 3742 flow [2023-08-31 22:30:49,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 767 places, 721 transitions, 3742 flow [2023-08-31 22:30:50,248 INFO L130 PetriNetUnfolder]: 93/1501 cut-off events. [2023-08-31 22:30:50,249 INFO L131 PetriNetUnfolder]: For 17250/17250 co-relation queries the response was YES. [2023-08-31 22:30:50,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2721 conditions, 1501 events. 93/1501 cut-off events. For 17250/17250 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 4753 event pairs, 0 based on Foata normal form. 0/1174 useless extension candidates. Maximal degree in co-relation 2629. Up to 94 conditions per place. [2023-08-31 22:30:50,448 INFO L119 LiptonReduction]: Number of co-enabled transitions 457884 [2023-08-31 22:30:58,781 INFO L134 LiptonReduction]: Checked pairs total: 2494814 [2023-08-31 22:30:58,781 INFO L136 LiptonReduction]: Total number of compositions: 303 [2023-08-31 22:30:58,782 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:30:58,782 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:30:58,783 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:30:58,936 INFO L130 PetriNetUnfolder]: 45/784 cut-off events. [2023-08-31 22:30:58,936 INFO L131 PetriNetUnfolder]: For 17250/17250 co-relation queries the response was YES. [2023-08-31 22:30:58,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:30:58,936 INFO L208 CegarLoopForPetriNet]: trace histogram [47, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:30:58,936 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:30:58,936 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:30:58,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1819570413, now seen corresponding path program 1 times [2023-08-31 22:30:58,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:30:58,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866973430] [2023-08-31 22:30:58,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:30:58,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:30:58,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:30:58,986 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:30:59,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:30:59,054 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:30:59,054 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:30:59,054 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:30:59,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-08-31 22:30:59,054 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:30:59,055 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:30:59,055 WARN L233 ceAbstractionStarter]: 46 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:30:59,055 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 47 thread instances. [2023-08-31 22:30:59,136 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:30:59,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 783 places, 736 transitions, 3869 flow [2023-08-31 22:30:59,649 INFO L130 PetriNetUnfolder]: 95/1533 cut-off events. [2023-08-31 22:30:59,649 INFO L131 PetriNetUnfolder]: For 18377/18377 co-relation queries the response was YES. [2023-08-31 22:30:59,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2803 conditions, 1533 events. 95/1533 cut-off events. For 18377/18377 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 4871 event pairs, 0 based on Foata normal form. 0/1199 useless extension candidates. Maximal degree in co-relation 2710. Up to 96 conditions per place. [2023-08-31 22:30:59,698 INFO L82 GeneralOperation]: Start removeDead. Operand has 783 places, 736 transitions, 3869 flow [2023-08-31 22:30:59,709 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 783 places, 736 transitions, 3869 flow [2023-08-31 22:30:59,709 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:30:59,710 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 783 places, 736 transitions, 3869 flow [2023-08-31 22:30:59,710 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 783 places, 736 transitions, 3869 flow [2023-08-31 22:30:59,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 783 places, 736 transitions, 3869 flow [2023-08-31 22:31:00,196 INFO L130 PetriNetUnfolder]: 95/1533 cut-off events. [2023-08-31 22:31:00,197 INFO L131 PetriNetUnfolder]: For 18377/18377 co-relation queries the response was YES. [2023-08-31 22:31:00,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2803 conditions, 1533 events. 95/1533 cut-off events. For 18377/18377 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 4871 event pairs, 0 based on Foata normal form. 0/1199 useless extension candidates. Maximal degree in co-relation 2710. Up to 96 conditions per place. [2023-08-31 22:31:00,407 INFO L119 LiptonReduction]: Number of co-enabled transitions 477708 [2023-08-31 22:31:08,937 INFO L134 LiptonReduction]: Checked pairs total: 2571041 [2023-08-31 22:31:08,937 INFO L136 LiptonReduction]: Total number of compositions: 309 [2023-08-31 22:31:08,938 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:31:08,938 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:31:08,938 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:31:09,097 INFO L130 PetriNetUnfolder]: 46/801 cut-off events. [2023-08-31 22:31:09,097 INFO L131 PetriNetUnfolder]: For 18377/18377 co-relation queries the response was YES. [2023-08-31 22:31:09,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:31:09,097 INFO L208 CegarLoopForPetriNet]: trace histogram [48, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:31:09,097 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:31:09,098 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:31:09,098 INFO L85 PathProgramCache]: Analyzing trace with hash 640237679, now seen corresponding path program 1 times [2023-08-31 22:31:09,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:31:09,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591544711] [2023-08-31 22:31:09,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:31:09,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:31:09,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:31:09,146 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:31:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:31:09,221 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:31:09,222 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:31:09,222 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:31:09,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-08-31 22:31:09,222 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:31:09,222 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:31:09,223 WARN L233 ceAbstractionStarter]: 47 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:31:09,223 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 48 thread instances. [2023-08-31 22:31:09,319 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:31:09,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 799 places, 751 transitions, 3998 flow [2023-08-31 22:31:09,890 INFO L130 PetriNetUnfolder]: 97/1565 cut-off events. [2023-08-31 22:31:09,890 INFO L131 PetriNetUnfolder]: For 19552/19552 co-relation queries the response was YES. [2023-08-31 22:31:09,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2886 conditions, 1565 events. 97/1565 cut-off events. For 19552/19552 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 4977 event pairs, 0 based on Foata normal form. 0/1224 useless extension candidates. Maximal degree in co-relation 2792. Up to 98 conditions per place. [2023-08-31 22:31:09,942 INFO L82 GeneralOperation]: Start removeDead. Operand has 799 places, 751 transitions, 3998 flow [2023-08-31 22:31:09,949 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 799 places, 751 transitions, 3998 flow [2023-08-31 22:31:09,949 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:31:09,949 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 799 places, 751 transitions, 3998 flow [2023-08-31 22:31:09,950 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 799 places, 751 transitions, 3998 flow [2023-08-31 22:31:09,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 799 places, 751 transitions, 3998 flow [2023-08-31 22:31:10,402 INFO L130 PetriNetUnfolder]: 97/1565 cut-off events. [2023-08-31 22:31:10,402 INFO L131 PetriNetUnfolder]: For 19552/19552 co-relation queries the response was YES. [2023-08-31 22:31:10,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2886 conditions, 1565 events. 97/1565 cut-off events. For 19552/19552 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 4977 event pairs, 0 based on Foata normal form. 0/1224 useless extension candidates. Maximal degree in co-relation 2792. Up to 98 conditions per place. [2023-08-31 22:31:10,622 INFO L119 LiptonReduction]: Number of co-enabled transitions 497952 [2023-08-31 22:31:19,356 INFO L134 LiptonReduction]: Checked pairs total: 2707315 [2023-08-31 22:31:19,356 INFO L136 LiptonReduction]: Total number of compositions: 315 [2023-08-31 22:31:19,357 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:31:19,357 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:31:19,357 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:31:19,525 INFO L130 PetriNetUnfolder]: 47/818 cut-off events. [2023-08-31 22:31:19,525 INFO L131 PetriNetUnfolder]: For 19552/19552 co-relation queries the response was YES. [2023-08-31 22:31:19,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:31:19,525 INFO L208 CegarLoopForPetriNet]: trace histogram [49, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:31:19,525 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:31:19,527 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:31:19,528 INFO L85 PathProgramCache]: Analyzing trace with hash 217207667, now seen corresponding path program 1 times [2023-08-31 22:31:19,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:31:19,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360103188] [2023-08-31 22:31:19,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:31:19,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:31:19,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:31:19,586 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:31:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:31:19,665 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:31:19,665 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:31:19,665 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:31:19,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-08-31 22:31:19,666 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:31:19,666 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:31:19,666 WARN L233 ceAbstractionStarter]: 48 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:31:19,666 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 49 thread instances. [2023-08-31 22:31:19,767 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:31:19,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 815 places, 766 transitions, 4129 flow [2023-08-31 22:31:20,349 INFO L130 PetriNetUnfolder]: 99/1597 cut-off events. [2023-08-31 22:31:20,349 INFO L131 PetriNetUnfolder]: For 20776/20776 co-relation queries the response was YES. [2023-08-31 22:31:20,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2970 conditions, 1597 events. 99/1597 cut-off events. For 20776/20776 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 5046 event pairs, 0 based on Foata normal form. 0/1249 useless extension candidates. Maximal degree in co-relation 2875. Up to 100 conditions per place. [2023-08-31 22:31:20,406 INFO L82 GeneralOperation]: Start removeDead. Operand has 815 places, 766 transitions, 4129 flow [2023-08-31 22:31:20,414 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 815 places, 766 transitions, 4129 flow [2023-08-31 22:31:20,414 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:31:20,414 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 815 places, 766 transitions, 4129 flow [2023-08-31 22:31:20,414 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 815 places, 766 transitions, 4129 flow [2023-08-31 22:31:20,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 815 places, 766 transitions, 4129 flow [2023-08-31 22:31:20,882 INFO L130 PetriNetUnfolder]: 99/1597 cut-off events. [2023-08-31 22:31:20,882 INFO L131 PetriNetUnfolder]: For 20776/20776 co-relation queries the response was YES. [2023-08-31 22:31:20,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2970 conditions, 1597 events. 99/1597 cut-off events. For 20776/20776 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 5046 event pairs, 0 based on Foata normal form. 0/1249 useless extension candidates. Maximal degree in co-relation 2875. Up to 100 conditions per place. [2023-08-31 22:31:21,116 INFO L119 LiptonReduction]: Number of co-enabled transitions 518616 [2023-08-31 22:31:29,984 INFO L134 LiptonReduction]: Checked pairs total: 2819141 [2023-08-31 22:31:29,984 INFO L136 LiptonReduction]: Total number of compositions: 321 [2023-08-31 22:31:29,985 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:31:29,985 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:31:29,985 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:31:30,160 INFO L130 PetriNetUnfolder]: 48/835 cut-off events. [2023-08-31 22:31:30,160 INFO L131 PetriNetUnfolder]: For 20776/20776 co-relation queries the response was YES. [2023-08-31 22:31:30,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:31:30,160 INFO L208 CegarLoopForPetriNet]: trace histogram [50, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:31:30,160 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:31:30,160 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:31:30,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1830029445, now seen corresponding path program 1 times [2023-08-31 22:31:30,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:31:30,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893599798] [2023-08-31 22:31:30,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:31:30,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:31:30,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:31:30,216 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:31:30,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:31:30,303 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:31:30,303 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:31:30,304 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:31:30,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-08-31 22:31:30,304 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:31:30,304 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:31:30,304 WARN L233 ceAbstractionStarter]: 49 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:31:30,304 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 50 thread instances. [2023-08-31 22:31:30,395 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:31:30,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 831 places, 781 transitions, 4262 flow [2023-08-31 22:31:30,947 INFO L130 PetriNetUnfolder]: 101/1629 cut-off events. [2023-08-31 22:31:30,947 INFO L131 PetriNetUnfolder]: For 22050/22050 co-relation queries the response was YES. [2023-08-31 22:31:31,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3055 conditions, 1629 events. 101/1629 cut-off events. For 22050/22050 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 5176 event pairs, 0 based on Foata normal form. 0/1274 useless extension candidates. Maximal degree in co-relation 2959. Up to 102 conditions per place. [2023-08-31 22:31:31,013 INFO L82 GeneralOperation]: Start removeDead. Operand has 831 places, 781 transitions, 4262 flow [2023-08-31 22:31:31,023 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 831 places, 781 transitions, 4262 flow [2023-08-31 22:31:31,023 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:31:31,023 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 831 places, 781 transitions, 4262 flow [2023-08-31 22:31:31,023 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 831 places, 781 transitions, 4262 flow [2023-08-31 22:31:31,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 831 places, 781 transitions, 4262 flow [2023-08-31 22:31:31,513 INFO L130 PetriNetUnfolder]: 101/1629 cut-off events. [2023-08-31 22:31:31,513 INFO L131 PetriNetUnfolder]: For 22050/22050 co-relation queries the response was YES. [2023-08-31 22:31:31,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3055 conditions, 1629 events. 101/1629 cut-off events. For 22050/22050 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 5176 event pairs, 0 based on Foata normal form. 0/1274 useless extension candidates. Maximal degree in co-relation 2959. Up to 102 conditions per place. [2023-08-31 22:31:31,755 INFO L119 LiptonReduction]: Number of co-enabled transitions 539700 [2023-08-31 22:31:40,972 INFO L134 LiptonReduction]: Checked pairs total: 2935997 [2023-08-31 22:31:40,972 INFO L136 LiptonReduction]: Total number of compositions: 327 [2023-08-31 22:31:40,973 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:31:40,973 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:31:40,973 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:31:41,241 INFO L130 PetriNetUnfolder]: 49/852 cut-off events. [2023-08-31 22:31:41,242 INFO L131 PetriNetUnfolder]: For 22050/22050 co-relation queries the response was YES. [2023-08-31 22:31:41,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:31:41,242 INFO L208 CegarLoopForPetriNet]: trace histogram [51, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:31:41,242 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:31:41,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:31:41,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1723093792, now seen corresponding path program 1 times [2023-08-31 22:31:41,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:31:41,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140003800] [2023-08-31 22:31:41,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:31:41,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:31:41,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:31:41,301 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:31:41,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:31:41,372 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:31:41,372 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:31:41,372 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:31:41,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-08-31 22:31:41,372 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:31:41,373 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:31:41,373 WARN L233 ceAbstractionStarter]: 50 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:31:41,373 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 51 thread instances. [2023-08-31 22:31:41,465 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:31:41,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 847 places, 796 transitions, 4397 flow [2023-08-31 22:31:42,001 INFO L130 PetriNetUnfolder]: 103/1661 cut-off events. [2023-08-31 22:31:42,001 INFO L131 PetriNetUnfolder]: For 23375/23375 co-relation queries the response was YES. [2023-08-31 22:31:42,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3141 conditions, 1661 events. 103/1661 cut-off events. For 23375/23375 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 5305 event pairs, 0 based on Foata normal form. 0/1299 useless extension candidates. Maximal degree in co-relation 3044. Up to 104 conditions per place. [2023-08-31 22:31:42,073 INFO L82 GeneralOperation]: Start removeDead. Operand has 847 places, 796 transitions, 4397 flow [2023-08-31 22:31:42,084 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 847 places, 796 transitions, 4397 flow [2023-08-31 22:31:42,084 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:31:42,084 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 847 places, 796 transitions, 4397 flow [2023-08-31 22:31:42,084 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 847 places, 796 transitions, 4397 flow [2023-08-31 22:31:42,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 847 places, 796 transitions, 4397 flow [2023-08-31 22:31:42,739 INFO L130 PetriNetUnfolder]: 103/1661 cut-off events. [2023-08-31 22:31:42,739 INFO L131 PetriNetUnfolder]: For 23375/23375 co-relation queries the response was YES. [2023-08-31 22:31:42,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3141 conditions, 1661 events. 103/1661 cut-off events. For 23375/23375 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 5305 event pairs, 0 based on Foata normal form. 0/1299 useless extension candidates. Maximal degree in co-relation 3044. Up to 104 conditions per place. [2023-08-31 22:31:42,955 INFO L119 LiptonReduction]: Number of co-enabled transitions 561204 [2023-08-31 22:31:52,030 INFO L134 LiptonReduction]: Checked pairs total: 3077893 [2023-08-31 22:31:52,030 INFO L136 LiptonReduction]: Total number of compositions: 333 [2023-08-31 22:31:52,031 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:31:52,031 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:31:52,031 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:31:52,224 INFO L130 PetriNetUnfolder]: 50/869 cut-off events. [2023-08-31 22:31:52,224 INFO L131 PetriNetUnfolder]: For 23375/23375 co-relation queries the response was YES. [2023-08-31 22:31:52,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:31:52,224 INFO L208 CegarLoopForPetriNet]: trace histogram [52, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:31:52,224 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:31:52,224 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:31:52,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1968800529, now seen corresponding path program 1 times [2023-08-31 22:31:52,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:31:52,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013053433] [2023-08-31 22:31:52,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:31:52,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:31:52,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:31:52,281 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:31:52,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:31:52,361 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:31:52,361 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:31:52,361 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:31:52,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-08-31 22:31:52,361 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:31:52,362 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:31:52,362 WARN L233 ceAbstractionStarter]: 51 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:31:52,362 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 52 thread instances. [2023-08-31 22:31:52,454 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:31:52,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 863 places, 811 transitions, 4534 flow [2023-08-31 22:31:53,000 INFO L130 PetriNetUnfolder]: 105/1693 cut-off events. [2023-08-31 22:31:53,001 INFO L131 PetriNetUnfolder]: For 24752/24752 co-relation queries the response was YES. [2023-08-31 22:31:53,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3228 conditions, 1693 events. 105/1693 cut-off events. For 24752/24752 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 5381 event pairs, 0 based on Foata normal form. 0/1324 useless extension candidates. Maximal degree in co-relation 3130. Up to 106 conditions per place. [2023-08-31 22:31:53,078 INFO L82 GeneralOperation]: Start removeDead. Operand has 863 places, 811 transitions, 4534 flow [2023-08-31 22:31:53,089 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 863 places, 811 transitions, 4534 flow [2023-08-31 22:31:53,089 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:31:53,089 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 863 places, 811 transitions, 4534 flow [2023-08-31 22:31:53,089 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 863 places, 811 transitions, 4534 flow [2023-08-31 22:31:53,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 863 places, 811 transitions, 4534 flow [2023-08-31 22:31:53,653 INFO L130 PetriNetUnfolder]: 105/1693 cut-off events. [2023-08-31 22:31:53,653 INFO L131 PetriNetUnfolder]: For 24752/24752 co-relation queries the response was YES. [2023-08-31 22:31:53,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3228 conditions, 1693 events. 105/1693 cut-off events. For 24752/24752 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 5381 event pairs, 0 based on Foata normal form. 0/1324 useless extension candidates. Maximal degree in co-relation 3130. Up to 106 conditions per place. [2023-08-31 22:31:53,911 INFO L119 LiptonReduction]: Number of co-enabled transitions 583128 [2023-08-31 22:32:03,446 INFO L134 LiptonReduction]: Checked pairs total: 3210719 [2023-08-31 22:32:03,446 INFO L136 LiptonReduction]: Total number of compositions: 339 [2023-08-31 22:32:03,447 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:32:03,447 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:32:03,448 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:32:03,648 INFO L130 PetriNetUnfolder]: 51/886 cut-off events. [2023-08-31 22:32:03,649 INFO L131 PetriNetUnfolder]: For 24752/24752 co-relation queries the response was YES. [2023-08-31 22:32:03,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:32:03,649 INFO L208 CegarLoopForPetriNet]: trace histogram [53, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:32:03,649 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:32:03,649 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:32:03,649 INFO L85 PathProgramCache]: Analyzing trace with hash -727532269, now seen corresponding path program 1 times [2023-08-31 22:32:03,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:32:03,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173272677] [2023-08-31 22:32:03,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:32:03,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:32:03,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:32:03,704 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:32:03,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:32:03,796 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:32:03,797 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:32:03,797 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:32:03,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-08-31 22:32:03,797 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:32:03,797 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:32:03,798 WARN L233 ceAbstractionStarter]: 52 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:32:03,798 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 53 thread instances. [2023-08-31 22:32:03,892 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:32:03,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 879 places, 826 transitions, 4673 flow [2023-08-31 22:32:04,510 INFO L130 PetriNetUnfolder]: 107/1725 cut-off events. [2023-08-31 22:32:04,511 INFO L131 PetriNetUnfolder]: For 26182/26182 co-relation queries the response was YES. [2023-08-31 22:32:04,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3316 conditions, 1725 events. 107/1725 cut-off events. For 26182/26182 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 5497 event pairs, 0 based on Foata normal form. 0/1349 useless extension candidates. Maximal degree in co-relation 3217. Up to 108 conditions per place. [2023-08-31 22:32:04,579 INFO L82 GeneralOperation]: Start removeDead. Operand has 879 places, 826 transitions, 4673 flow [2023-08-31 22:32:04,588 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 879 places, 826 transitions, 4673 flow [2023-08-31 22:32:04,589 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:32:04,589 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 879 places, 826 transitions, 4673 flow [2023-08-31 22:32:04,589 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 879 places, 826 transitions, 4673 flow [2023-08-31 22:32:04,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 879 places, 826 transitions, 4673 flow [2023-08-31 22:32:05,158 INFO L130 PetriNetUnfolder]: 107/1725 cut-off events. [2023-08-31 22:32:05,158 INFO L131 PetriNetUnfolder]: For 26182/26182 co-relation queries the response was YES. [2023-08-31 22:32:05,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3316 conditions, 1725 events. 107/1725 cut-off events. For 26182/26182 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 5497 event pairs, 0 based on Foata normal form. 0/1349 useless extension candidates. Maximal degree in co-relation 3217. Up to 108 conditions per place. [2023-08-31 22:32:05,438 INFO L119 LiptonReduction]: Number of co-enabled transitions 605472 [2023-08-31 22:32:14,972 INFO L134 LiptonReduction]: Checked pairs total: 3300902 [2023-08-31 22:32:14,972 INFO L136 LiptonReduction]: Total number of compositions: 345 [2023-08-31 22:32:14,973 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:32:14,973 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:32:14,974 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:32:15,236 INFO L130 PetriNetUnfolder]: 52/903 cut-off events. [2023-08-31 22:32:15,237 INFO L131 PetriNetUnfolder]: For 26182/26182 co-relation queries the response was YES. [2023-08-31 22:32:15,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:32:15,237 INFO L208 CegarLoopForPetriNet]: trace histogram [54, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:32:15,237 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:32:15,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:32:15,238 INFO L85 PathProgramCache]: Analyzing trace with hash -2060570081, now seen corresponding path program 1 times [2023-08-31 22:32:15,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:32:15,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629432235] [2023-08-31 22:32:15,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:32:15,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:32:15,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:32:15,302 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:32:15,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:32:15,403 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:32:15,403 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:32:15,404 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:32:15,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-08-31 22:32:15,404 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:32:15,404 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:32:15,404 WARN L233 ceAbstractionStarter]: 53 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:32:15,404 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 54 thread instances. [2023-08-31 22:32:15,512 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:32:15,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 895 places, 841 transitions, 4814 flow [2023-08-31 22:32:16,112 INFO L130 PetriNetUnfolder]: 109/1757 cut-off events. [2023-08-31 22:32:16,112 INFO L131 PetriNetUnfolder]: For 27666/27666 co-relation queries the response was YES. [2023-08-31 22:32:16,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3405 conditions, 1757 events. 109/1757 cut-off events. For 27666/27666 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 5609 event pairs, 0 based on Foata normal form. 0/1374 useless extension candidates. Maximal degree in co-relation 3305. Up to 110 conditions per place. [2023-08-31 22:32:16,192 INFO L82 GeneralOperation]: Start removeDead. Operand has 895 places, 841 transitions, 4814 flow [2023-08-31 22:32:16,203 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 895 places, 841 transitions, 4814 flow [2023-08-31 22:32:16,204 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:32:16,204 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 895 places, 841 transitions, 4814 flow [2023-08-31 22:32:16,204 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 895 places, 841 transitions, 4814 flow [2023-08-31 22:32:16,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 895 places, 841 transitions, 4814 flow [2023-08-31 22:32:16,858 INFO L130 PetriNetUnfolder]: 109/1757 cut-off events. [2023-08-31 22:32:16,858 INFO L131 PetriNetUnfolder]: For 27666/27666 co-relation queries the response was YES. [2023-08-31 22:32:16,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3405 conditions, 1757 events. 109/1757 cut-off events. For 27666/27666 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 5609 event pairs, 0 based on Foata normal form. 0/1374 useless extension candidates. Maximal degree in co-relation 3305. Up to 110 conditions per place. [2023-08-31 22:32:17,125 INFO L119 LiptonReduction]: Number of co-enabled transitions 628236 [2023-08-31 22:32:26,984 INFO L134 LiptonReduction]: Checked pairs total: 3414315 [2023-08-31 22:32:26,985 INFO L136 LiptonReduction]: Total number of compositions: 351 [2023-08-31 22:32:26,985 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:32:26,986 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:32:26,986 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:32:27,204 INFO L130 PetriNetUnfolder]: 53/920 cut-off events. [2023-08-31 22:32:27,204 INFO L131 PetriNetUnfolder]: For 27666/27666 co-relation queries the response was YES. [2023-08-31 22:32:27,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:32:27,204 INFO L208 CegarLoopForPetriNet]: trace histogram [55, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:32:27,204 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:32:27,204 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:32:27,204 INFO L85 PathProgramCache]: Analyzing trace with hash 46597715, now seen corresponding path program 1 times [2023-08-31 22:32:27,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:32:27,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779774082] [2023-08-31 22:32:27,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:32:27,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:32:27,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:32:27,263 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:32:27,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:32:27,369 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:32:27,370 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:32:27,370 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:32:27,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-08-31 22:32:27,370 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:32:27,371 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:32:27,371 WARN L233 ceAbstractionStarter]: 54 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:32:27,371 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 55 thread instances. [2023-08-31 22:32:27,484 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:32:27,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 911 places, 856 transitions, 4957 flow [2023-08-31 22:32:28,238 INFO L130 PetriNetUnfolder]: 111/1789 cut-off events. [2023-08-31 22:32:28,238 INFO L131 PetriNetUnfolder]: For 29205/29205 co-relation queries the response was YES. [2023-08-31 22:32:28,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3495 conditions, 1789 events. 111/1789 cut-off events. For 29205/29205 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 5697 event pairs, 0 based on Foata normal form. 0/1399 useless extension candidates. Maximal degree in co-relation 3394. Up to 112 conditions per place. [2023-08-31 22:32:28,313 INFO L82 GeneralOperation]: Start removeDead. Operand has 911 places, 856 transitions, 4957 flow [2023-08-31 22:32:28,323 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 911 places, 856 transitions, 4957 flow [2023-08-31 22:32:28,323 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:32:28,323 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 911 places, 856 transitions, 4957 flow [2023-08-31 22:32:28,323 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 911 places, 856 transitions, 4957 flow [2023-08-31 22:32:28,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 911 places, 856 transitions, 4957 flow [2023-08-31 22:32:28,953 INFO L130 PetriNetUnfolder]: 111/1789 cut-off events. [2023-08-31 22:32:28,953 INFO L131 PetriNetUnfolder]: For 29205/29205 co-relation queries the response was YES. [2023-08-31 22:32:29,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3495 conditions, 1789 events. 111/1789 cut-off events. For 29205/29205 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 5697 event pairs, 0 based on Foata normal form. 0/1399 useless extension candidates. Maximal degree in co-relation 3394. Up to 112 conditions per place. [2023-08-31 22:32:29,274 INFO L119 LiptonReduction]: Number of co-enabled transitions 651420 [2023-08-31 22:32:39,257 INFO L134 LiptonReduction]: Checked pairs total: 3563575 [2023-08-31 22:32:39,257 INFO L136 LiptonReduction]: Total number of compositions: 357 [2023-08-31 22:32:39,258 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:32:39,258 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:32:39,259 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:32:39,525 INFO L130 PetriNetUnfolder]: 54/937 cut-off events. [2023-08-31 22:32:39,525 INFO L131 PetriNetUnfolder]: For 29205/29205 co-relation queries the response was YES. [2023-08-31 22:32:39,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:32:39,526 INFO L208 CegarLoopForPetriNet]: trace histogram [56, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:32:39,526 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:32:39,526 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:32:39,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1984455663, now seen corresponding path program 1 times [2023-08-31 22:32:39,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:32:39,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878865661] [2023-08-31 22:32:39,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:32:39,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:32:39,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:32:39,582 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:32:39,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:32:39,691 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:32:39,691 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:32:39,691 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:32:39,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-08-31 22:32:39,691 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:32:39,692 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:32:39,692 WARN L233 ceAbstractionStarter]: 55 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:32:39,692 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 56 thread instances. [2023-08-31 22:32:39,791 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:32:39,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 927 places, 871 transitions, 5102 flow [2023-08-31 22:32:40,452 INFO L130 PetriNetUnfolder]: 113/1821 cut-off events. [2023-08-31 22:32:40,452 INFO L131 PetriNetUnfolder]: For 30800/30800 co-relation queries the response was YES. [2023-08-31 22:32:40,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3586 conditions, 1821 events. 113/1821 cut-off events. For 30800/30800 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 5823 event pairs, 0 based on Foata normal form. 0/1424 useless extension candidates. Maximal degree in co-relation 3484. Up to 114 conditions per place. [2023-08-31 22:32:40,540 INFO L82 GeneralOperation]: Start removeDead. Operand has 927 places, 871 transitions, 5102 flow [2023-08-31 22:32:40,553 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 927 places, 871 transitions, 5102 flow [2023-08-31 22:32:40,553 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:32:40,553 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 927 places, 871 transitions, 5102 flow [2023-08-31 22:32:40,553 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 927 places, 871 transitions, 5102 flow [2023-08-31 22:32:40,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 927 places, 871 transitions, 5102 flow [2023-08-31 22:32:41,227 INFO L130 PetriNetUnfolder]: 113/1821 cut-off events. [2023-08-31 22:32:41,227 INFO L131 PetriNetUnfolder]: For 30800/30800 co-relation queries the response was YES. [2023-08-31 22:32:41,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3586 conditions, 1821 events. 113/1821 cut-off events. For 30800/30800 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 5823 event pairs, 0 based on Foata normal form. 0/1424 useless extension candidates. Maximal degree in co-relation 3484. Up to 114 conditions per place. [2023-08-31 22:32:41,527 INFO L119 LiptonReduction]: Number of co-enabled transitions 675024 [2023-08-31 22:32:51,904 INFO L134 LiptonReduction]: Checked pairs total: 3654635 [2023-08-31 22:32:51,904 INFO L136 LiptonReduction]: Total number of compositions: 363 [2023-08-31 22:32:51,905 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:32:51,905 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:32:51,905 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:32:52,147 INFO L130 PetriNetUnfolder]: 55/954 cut-off events. [2023-08-31 22:32:52,147 INFO L131 PetriNetUnfolder]: For 30800/30800 co-relation queries the response was YES. [2023-08-31 22:32:52,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:32:52,147 INFO L208 CegarLoopForPetriNet]: trace histogram [57, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:32:52,147 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:32:52,147 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:32:52,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1403861530, now seen corresponding path program 1 times [2023-08-31 22:32:52,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:32:52,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708521463] [2023-08-31 22:32:52,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:32:52,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:32:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:32:52,211 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:32:52,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:32:52,324 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:32:52,325 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:32:52,325 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:32:52,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-08-31 22:32:52,325 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:32:52,325 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:32:52,325 WARN L233 ceAbstractionStarter]: 56 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:32:52,326 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 57 thread instances. [2023-08-31 22:32:52,439 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:32:52,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 943 places, 886 transitions, 5249 flow [2023-08-31 22:32:53,156 INFO L130 PetriNetUnfolder]: 115/1853 cut-off events. [2023-08-31 22:32:53,156 INFO L131 PetriNetUnfolder]: For 32452/32452 co-relation queries the response was YES. [2023-08-31 22:32:53,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3678 conditions, 1853 events. 115/1853 cut-off events. For 32452/32452 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 5897 event pairs, 0 based on Foata normal form. 0/1449 useless extension candidates. Maximal degree in co-relation 3575. Up to 116 conditions per place. [2023-08-31 22:32:53,245 INFO L82 GeneralOperation]: Start removeDead. Operand has 943 places, 886 transitions, 5249 flow [2023-08-31 22:32:53,257 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 943 places, 886 transitions, 5249 flow [2023-08-31 22:32:53,257 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:32:53,257 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 943 places, 886 transitions, 5249 flow [2023-08-31 22:32:53,257 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 943 places, 886 transitions, 5249 flow [2023-08-31 22:32:53,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 943 places, 886 transitions, 5249 flow [2023-08-31 22:32:54,089 INFO L130 PetriNetUnfolder]: 115/1853 cut-off events. [2023-08-31 22:32:54,090 INFO L131 PetriNetUnfolder]: For 32452/32452 co-relation queries the response was YES. [2023-08-31 22:32:54,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3678 conditions, 1853 events. 115/1853 cut-off events. For 32452/32452 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 5897 event pairs, 0 based on Foata normal form. 0/1449 useless extension candidates. Maximal degree in co-relation 3575. Up to 116 conditions per place. [2023-08-31 22:32:54,374 INFO L119 LiptonReduction]: Number of co-enabled transitions 699048 [2023-08-31 22:33:04,945 INFO L134 LiptonReduction]: Checked pairs total: 3806154 [2023-08-31 22:33:04,945 INFO L136 LiptonReduction]: Total number of compositions: 369 [2023-08-31 22:33:04,946 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:33:04,946 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:33:04,946 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:33:05,192 INFO L130 PetriNetUnfolder]: 56/971 cut-off events. [2023-08-31 22:33:05,192 INFO L131 PetriNetUnfolder]: For 32452/32452 co-relation queries the response was YES. [2023-08-31 22:33:05,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:33:05,192 INFO L208 CegarLoopForPetriNet]: trace histogram [58, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:33:05,192 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:33:05,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:33:05,192 INFO L85 PathProgramCache]: Analyzing trace with hash -117283745, now seen corresponding path program 1 times [2023-08-31 22:33:05,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:33:05,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712516756] [2023-08-31 22:33:05,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:33:05,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:33:05,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:33:05,274 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:33:05,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:33:05,383 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:33:05,383 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:33:05,383 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:33:05,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-08-31 22:33:05,384 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:33:05,384 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:33:05,384 WARN L233 ceAbstractionStarter]: 57 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:33:05,384 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 58 thread instances. [2023-08-31 22:33:05,484 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:33:05,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 959 places, 901 transitions, 5398 flow [2023-08-31 22:33:06,443 INFO L130 PetriNetUnfolder]: 117/1885 cut-off events. [2023-08-31 22:33:06,443 INFO L131 PetriNetUnfolder]: For 34162/34162 co-relation queries the response was YES. [2023-08-31 22:33:06,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3771 conditions, 1885 events. 117/1885 cut-off events. For 34162/34162 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 6012 event pairs, 0 based on Foata normal form. 0/1474 useless extension candidates. Maximal degree in co-relation 3667. Up to 118 conditions per place. [2023-08-31 22:33:06,527 INFO L82 GeneralOperation]: Start removeDead. Operand has 959 places, 901 transitions, 5398 flow [2023-08-31 22:33:06,538 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 959 places, 901 transitions, 5398 flow [2023-08-31 22:33:06,539 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:33:06,539 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 959 places, 901 transitions, 5398 flow [2023-08-31 22:33:06,539 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 959 places, 901 transitions, 5398 flow [2023-08-31 22:33:06,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 959 places, 901 transitions, 5398 flow [2023-08-31 22:33:07,236 INFO L130 PetriNetUnfolder]: 117/1885 cut-off events. [2023-08-31 22:33:07,236 INFO L131 PetriNetUnfolder]: For 34162/34162 co-relation queries the response was YES. [2023-08-31 22:33:07,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3771 conditions, 1885 events. 117/1885 cut-off events. For 34162/34162 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 6012 event pairs, 0 based on Foata normal form. 0/1474 useless extension candidates. Maximal degree in co-relation 3667. Up to 118 conditions per place. [2023-08-31 22:33:07,745 INFO L119 LiptonReduction]: Number of co-enabled transitions 723492 [2023-08-31 22:33:18,554 INFO L134 LiptonReduction]: Checked pairs total: 3424038 [2023-08-31 22:33:18,554 INFO L136 LiptonReduction]: Total number of compositions: 375 [2023-08-31 22:33:18,555 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:33:18,555 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:33:18,556 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:33:18,817 INFO L130 PetriNetUnfolder]: 57/988 cut-off events. [2023-08-31 22:33:18,817 INFO L131 PetriNetUnfolder]: For 34162/34162 co-relation queries the response was YES. [2023-08-31 22:33:18,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:33:18,817 INFO L208 CegarLoopForPetriNet]: trace histogram [59, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:33:18,817 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:33:18,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:33:18,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1779034365, now seen corresponding path program 1 times [2023-08-31 22:33:18,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:33:18,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611064545] [2023-08-31 22:33:18,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:33:18,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:33:18,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:33:18,895 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:33:18,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:33:18,997 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:33:18,998 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:33:18,998 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:33:18,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-08-31 22:33:18,998 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:33:18,998 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:33:18,998 WARN L233 ceAbstractionStarter]: 58 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:33:18,998 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 59 thread instances. [2023-08-31 22:33:19,101 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:33:19,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 975 places, 916 transitions, 5549 flow [2023-08-31 22:33:19,999 INFO L130 PetriNetUnfolder]: 119/1917 cut-off events. [2023-08-31 22:33:20,000 INFO L131 PetriNetUnfolder]: For 35931/35931 co-relation queries the response was YES. [2023-08-31 22:33:20,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3865 conditions, 1917 events. 119/1917 cut-off events. For 35931/35931 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 6121 event pairs, 0 based on Foata normal form. 0/1499 useless extension candidates. Maximal degree in co-relation 3760. Up to 120 conditions per place. [2023-08-31 22:33:20,077 INFO L82 GeneralOperation]: Start removeDead. Operand has 975 places, 916 transitions, 5549 flow [2023-08-31 22:33:20,087 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 975 places, 916 transitions, 5549 flow [2023-08-31 22:33:20,088 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:33:20,088 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 975 places, 916 transitions, 5549 flow [2023-08-31 22:33:20,088 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 975 places, 916 transitions, 5549 flow [2023-08-31 22:33:20,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 975 places, 916 transitions, 5549 flow [2023-08-31 22:33:20,818 INFO L130 PetriNetUnfolder]: 119/1917 cut-off events. [2023-08-31 22:33:20,819 INFO L131 PetriNetUnfolder]: For 35931/35931 co-relation queries the response was YES. [2023-08-31 22:33:20,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3865 conditions, 1917 events. 119/1917 cut-off events. For 35931/35931 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 6121 event pairs, 0 based on Foata normal form. 0/1499 useless extension candidates. Maximal degree in co-relation 3760. Up to 120 conditions per place. [2023-08-31 22:33:21,198 INFO L119 LiptonReduction]: Number of co-enabled transitions 748356 [2023-08-31 22:33:31,752 INFO L134 LiptonReduction]: Checked pairs total: 4078878 [2023-08-31 22:33:31,752 INFO L136 LiptonReduction]: Total number of compositions: 381 [2023-08-31 22:33:31,753 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:33:31,753 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:33:31,753 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:33:32,018 INFO L130 PetriNetUnfolder]: 58/1005 cut-off events. [2023-08-31 22:33:32,018 INFO L131 PetriNetUnfolder]: For 35931/35931 co-relation queries the response was YES. [2023-08-31 22:33:32,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:33:32,018 INFO L208 CegarLoopForPetriNet]: trace histogram [60, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:33:32,018 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:33:32,018 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:33:32,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1408273997, now seen corresponding path program 1 times [2023-08-31 22:33:32,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:33:32,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008606663] [2023-08-31 22:33:32,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:33:32,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:33:32,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:33:32,093 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:33:32,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:33:32,209 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:33:32,209 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:33:32,209 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:33:32,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2023-08-31 22:33:32,209 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:33:32,210 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:33:32,210 WARN L233 ceAbstractionStarter]: 59 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:33:32,210 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 60 thread instances. [2023-08-31 22:33:32,368 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:33:32,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 991 places, 931 transitions, 5702 flow [2023-08-31 22:33:33,257 INFO L130 PetriNetUnfolder]: 121/1949 cut-off events. [2023-08-31 22:33:33,257 INFO L131 PetriNetUnfolder]: For 37760/37760 co-relation queries the response was YES. [2023-08-31 22:33:33,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3960 conditions, 1949 events. 121/1949 cut-off events. For 37760/37760 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 6232 event pairs, 0 based on Foata normal form. 0/1524 useless extension candidates. Maximal degree in co-relation 3854. Up to 122 conditions per place. [2023-08-31 22:33:33,362 INFO L82 GeneralOperation]: Start removeDead. Operand has 991 places, 931 transitions, 5702 flow [2023-08-31 22:33:33,376 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 991 places, 931 transitions, 5702 flow [2023-08-31 22:33:33,376 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:33:33,376 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 991 places, 931 transitions, 5702 flow [2023-08-31 22:33:33,376 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 991 places, 931 transitions, 5702 flow [2023-08-31 22:33:33,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 991 places, 931 transitions, 5702 flow [2023-08-31 22:33:34,282 INFO L130 PetriNetUnfolder]: 121/1949 cut-off events. [2023-08-31 22:33:34,282 INFO L131 PetriNetUnfolder]: For 37760/37760 co-relation queries the response was YES. [2023-08-31 22:33:34,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3960 conditions, 1949 events. 121/1949 cut-off events. For 37760/37760 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 6232 event pairs, 0 based on Foata normal form. 0/1524 useless extension candidates. Maximal degree in co-relation 3854. Up to 122 conditions per place. [2023-08-31 22:33:34,602 INFO L119 LiptonReduction]: Number of co-enabled transitions 773640 [2023-08-31 22:33:45,531 INFO L134 LiptonReduction]: Checked pairs total: 3637312 [2023-08-31 22:33:45,531 INFO L136 LiptonReduction]: Total number of compositions: 387 [2023-08-31 22:33:45,532 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:33:45,532 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:33:45,532 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:33:45,813 INFO L130 PetriNetUnfolder]: 59/1022 cut-off events. [2023-08-31 22:33:45,813 INFO L131 PetriNetUnfolder]: For 37760/37760 co-relation queries the response was YES. [2023-08-31 22:33:45,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:33:45,814 INFO L208 CegarLoopForPetriNet]: trace histogram [61, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:33:45,814 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:33:45,814 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:33:45,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1735689746, now seen corresponding path program 1 times [2023-08-31 22:33:45,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:33:45,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433813176] [2023-08-31 22:33:45,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:33:45,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:33:45,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:33:45,889 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:33:45,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:33:46,011 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:33:46,012 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:33:46,012 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:33:46,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2023-08-31 22:33:46,012 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:33:46,012 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:33:46,012 WARN L233 ceAbstractionStarter]: 60 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:33:46,012 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 61 thread instances. [2023-08-31 22:33:46,115 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:33:46,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1007 places, 946 transitions, 5857 flow [2023-08-31 22:33:47,103 INFO L130 PetriNetUnfolder]: 123/1981 cut-off events. [2023-08-31 22:33:47,103 INFO L131 PetriNetUnfolder]: For 39650/39650 co-relation queries the response was YES. [2023-08-31 22:33:47,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4056 conditions, 1981 events. 123/1981 cut-off events. For 39650/39650 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 6314 event pairs, 0 based on Foata normal form. 0/1549 useless extension candidates. Maximal degree in co-relation 3949. Up to 124 conditions per place. [2023-08-31 22:33:47,186 INFO L82 GeneralOperation]: Start removeDead. Operand has 1007 places, 946 transitions, 5857 flow [2023-08-31 22:33:47,197 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1007 places, 946 transitions, 5857 flow [2023-08-31 22:33:47,197 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:33:47,198 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1007 places, 946 transitions, 5857 flow [2023-08-31 22:33:47,198 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1007 places, 946 transitions, 5857 flow [2023-08-31 22:33:47,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1007 places, 946 transitions, 5857 flow [2023-08-31 22:33:47,992 INFO L130 PetriNetUnfolder]: 123/1981 cut-off events. [2023-08-31 22:33:47,992 INFO L131 PetriNetUnfolder]: For 39650/39650 co-relation queries the response was YES. [2023-08-31 22:33:48,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4056 conditions, 1981 events. 123/1981 cut-off events. For 39650/39650 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 6314 event pairs, 0 based on Foata normal form. 0/1549 useless extension candidates. Maximal degree in co-relation 3949. Up to 124 conditions per place. [2023-08-31 22:33:48,401 INFO L119 LiptonReduction]: Number of co-enabled transitions 799344 [2023-08-31 22:33:59,971 INFO L134 LiptonReduction]: Checked pairs total: 4365147 [2023-08-31 22:33:59,971 INFO L136 LiptonReduction]: Total number of compositions: 393 [2023-08-31 22:33:59,972 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:33:59,972 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:33:59,972 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:34:00,289 INFO L130 PetriNetUnfolder]: 60/1039 cut-off events. [2023-08-31 22:34:00,289 INFO L131 PetriNetUnfolder]: For 39650/39650 co-relation queries the response was YES. [2023-08-31 22:34:00,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:34:00,290 INFO L208 CegarLoopForPetriNet]: trace histogram [62, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:34:00,290 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:34:00,290 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:34:00,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1956321567, now seen corresponding path program 1 times [2023-08-31 22:34:00,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:34:00,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339103680] [2023-08-31 22:34:00,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:34:00,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:34:00,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:34:00,372 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:34:00,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:34:00,479 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:34:00,479 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:34:00,479 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:34:00,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2023-08-31 22:34:00,479 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:34:00,479 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:34:00,479 WARN L233 ceAbstractionStarter]: 61 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:34:00,479 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 62 thread instances. [2023-08-31 22:34:00,607 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:34:00,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1023 places, 961 transitions, 6014 flow [2023-08-31 22:34:01,430 INFO L130 PetriNetUnfolder]: 125/2013 cut-off events. [2023-08-31 22:34:01,430 INFO L131 PetriNetUnfolder]: For 41602/41602 co-relation queries the response was YES. [2023-08-31 22:34:01,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4153 conditions, 2013 events. 125/2013 cut-off events. For 41602/41602 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 6551 event pairs, 0 based on Foata normal form. 0/1574 useless extension candidates. Maximal degree in co-relation 4045. Up to 126 conditions per place. [2023-08-31 22:34:01,546 INFO L82 GeneralOperation]: Start removeDead. Operand has 1023 places, 961 transitions, 6014 flow [2023-08-31 22:34:01,561 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1023 places, 961 transitions, 6014 flow [2023-08-31 22:34:01,561 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:34:01,561 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1023 places, 961 transitions, 6014 flow [2023-08-31 22:34:01,561 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1023 places, 961 transitions, 6014 flow [2023-08-31 22:34:01,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1023 places, 961 transitions, 6014 flow [2023-08-31 22:34:02,403 INFO L130 PetriNetUnfolder]: 125/2013 cut-off events. [2023-08-31 22:34:02,403 INFO L131 PetriNetUnfolder]: For 41602/41602 co-relation queries the response was YES. [2023-08-31 22:34:02,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4153 conditions, 2013 events. 125/2013 cut-off events. For 41602/41602 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 6551 event pairs, 0 based on Foata normal form. 0/1574 useless extension candidates. Maximal degree in co-relation 4045. Up to 126 conditions per place. [2023-08-31 22:34:02,787 INFO L119 LiptonReduction]: Number of co-enabled transitions 825468 [2023-08-31 22:34:14,302 INFO L134 LiptonReduction]: Checked pairs total: 3918517 [2023-08-31 22:34:14,303 INFO L136 LiptonReduction]: Total number of compositions: 399 [2023-08-31 22:34:14,304 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:34:14,304 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:34:14,304 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:34:14,616 INFO L130 PetriNetUnfolder]: 61/1056 cut-off events. [2023-08-31 22:34:14,616 INFO L131 PetriNetUnfolder]: For 41602/41602 co-relation queries the response was YES. [2023-08-31 22:34:14,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:34:14,616 INFO L208 CegarLoopForPetriNet]: trace histogram [63, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:34:14,616 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:34:14,616 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:34:14,616 INFO L85 PathProgramCache]: Analyzing trace with hash 443856853, now seen corresponding path program 1 times [2023-08-31 22:34:14,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:34:14,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158499514] [2023-08-31 22:34:14,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:34:14,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:34:14,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:34:14,692 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:34:14,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:34:14,802 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:34:14,802 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:34:14,803 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:34:14,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2023-08-31 22:34:14,803 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:34:14,803 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:34:14,803 WARN L233 ceAbstractionStarter]: 62 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:34:14,803 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 63 thread instances. [2023-08-31 22:34:14,913 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:34:14,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1039 places, 976 transitions, 6173 flow [2023-08-31 22:34:15,811 INFO L130 PetriNetUnfolder]: 127/2045 cut-off events. [2023-08-31 22:34:15,811 INFO L131 PetriNetUnfolder]: For 43617/43617 co-relation queries the response was YES. [2023-08-31 22:34:15,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4251 conditions, 2045 events. 127/2045 cut-off events. For 43617/43617 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 6521 event pairs, 0 based on Foata normal form. 0/1599 useless extension candidates. Maximal degree in co-relation 4142. Up to 128 conditions per place. [2023-08-31 22:34:15,920 INFO L82 GeneralOperation]: Start removeDead. Operand has 1039 places, 976 transitions, 6173 flow [2023-08-31 22:34:15,935 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1039 places, 976 transitions, 6173 flow [2023-08-31 22:34:15,935 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:34:15,935 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1039 places, 976 transitions, 6173 flow [2023-08-31 22:34:15,935 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1039 places, 976 transitions, 6173 flow [2023-08-31 22:34:15,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1039 places, 976 transitions, 6173 flow [2023-08-31 22:34:16,963 INFO L130 PetriNetUnfolder]: 127/2045 cut-off events. [2023-08-31 22:34:16,963 INFO L131 PetriNetUnfolder]: For 43617/43617 co-relation queries the response was YES. [2023-08-31 22:34:17,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4251 conditions, 2045 events. 127/2045 cut-off events. For 43617/43617 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 6521 event pairs, 0 based on Foata normal form. 0/1599 useless extension candidates. Maximal degree in co-relation 4142. Up to 128 conditions per place. [2023-08-31 22:34:17,321 INFO L119 LiptonReduction]: Number of co-enabled transitions 852012 [2023-08-31 22:34:29,161 INFO L134 LiptonReduction]: Checked pairs total: 4676378 [2023-08-31 22:34:29,161 INFO L136 LiptonReduction]: Total number of compositions: 405 [2023-08-31 22:34:29,162 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:34:29,162 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:34:29,162 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:34:29,473 INFO L130 PetriNetUnfolder]: 62/1073 cut-off events. [2023-08-31 22:34:29,473 INFO L131 PetriNetUnfolder]: For 43617/43617 co-relation queries the response was YES. [2023-08-31 22:34:29,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:34:29,473 INFO L208 CegarLoopForPetriNet]: trace histogram [64, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:34:29,473 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:34:29,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:34:29,474 INFO L85 PathProgramCache]: Analyzing trace with hash -232953553, now seen corresponding path program 1 times [2023-08-31 22:34:29,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:34:29,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037375245] [2023-08-31 22:34:29,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:34:29,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:34:29,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:34:29,555 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:34:29,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:34:29,675 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:34:29,676 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:34:29,676 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:34:29,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2023-08-31 22:34:29,676 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:34:29,677 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:34:29,677 WARN L233 ceAbstractionStarter]: 63 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:34:29,677 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 64 thread instances. [2023-08-31 22:34:29,795 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:34:29,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1055 places, 991 transitions, 6334 flow [2023-08-31 22:34:30,682 INFO L130 PetriNetUnfolder]: 129/2077 cut-off events. [2023-08-31 22:34:30,682 INFO L131 PetriNetUnfolder]: For 45696/45696 co-relation queries the response was YES. [2023-08-31 22:34:30,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4350 conditions, 2077 events. 129/2077 cut-off events. For 45696/45696 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 6645 event pairs, 0 based on Foata normal form. 0/1624 useless extension candidates. Maximal degree in co-relation 4240. Up to 130 conditions per place. [2023-08-31 22:34:30,804 INFO L82 GeneralOperation]: Start removeDead. Operand has 1055 places, 991 transitions, 6334 flow [2023-08-31 22:34:31,015 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1055 places, 991 transitions, 6334 flow [2023-08-31 22:34:31,016 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:34:31,016 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1055 places, 991 transitions, 6334 flow [2023-08-31 22:34:31,017 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1055 places, 991 transitions, 6334 flow [2023-08-31 22:34:31,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1055 places, 991 transitions, 6334 flow [2023-08-31 22:34:31,976 INFO L130 PetriNetUnfolder]: 129/2077 cut-off events. [2023-08-31 22:34:31,977 INFO L131 PetriNetUnfolder]: For 45696/45696 co-relation queries the response was YES. [2023-08-31 22:34:32,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4350 conditions, 2077 events. 129/2077 cut-off events. For 45696/45696 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 6645 event pairs, 0 based on Foata normal form. 0/1624 useless extension candidates. Maximal degree in co-relation 4240. Up to 130 conditions per place. [2023-08-31 22:34:32,426 INFO L119 LiptonReduction]: Number of co-enabled transitions 878976 [2023-08-31 22:34:44,415 INFO L134 LiptonReduction]: Checked pairs total: 4813539 [2023-08-31 22:34:44,415 INFO L136 LiptonReduction]: Total number of compositions: 411 [2023-08-31 22:34:44,416 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:34:44,416 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:34:44,416 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:34:44,746 INFO L130 PetriNetUnfolder]: 63/1090 cut-off events. [2023-08-31 22:34:44,746 INFO L131 PetriNetUnfolder]: For 45696/45696 co-relation queries the response was YES. [2023-08-31 22:34:44,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:34:44,746 INFO L208 CegarLoopForPetriNet]: trace histogram [65, 64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:34:44,747 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:34:44,747 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:34:44,747 INFO L85 PathProgramCache]: Analyzing trace with hash 157362386, now seen corresponding path program 1 times [2023-08-31 22:34:44,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:34:44,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426562521] [2023-08-31 22:34:44,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:34:44,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:34:44,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:34:44,839 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:34:44,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:34:44,959 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:34:44,960 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:34:44,960 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:34:44,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2023-08-31 22:34:44,960 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:34:44,961 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:34:44,961 WARN L233 ceAbstractionStarter]: 64 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:34:44,961 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 65 thread instances. [2023-08-31 22:34:45,080 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:34:45,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1071 places, 1006 transitions, 6497 flow [2023-08-31 22:34:46,148 INFO L130 PetriNetUnfolder]: 131/2109 cut-off events. [2023-08-31 22:34:46,148 INFO L131 PetriNetUnfolder]: For 47840/47840 co-relation queries the response was YES. [2023-08-31 22:34:46,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4450 conditions, 2109 events. 131/2109 cut-off events. For 47840/47840 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 6720 event pairs, 0 based on Foata normal form. 0/1649 useless extension candidates. Maximal degree in co-relation 4339. Up to 132 conditions per place. [2023-08-31 22:34:46,248 INFO L82 GeneralOperation]: Start removeDead. Operand has 1071 places, 1006 transitions, 6497 flow [2023-08-31 22:34:46,261 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1071 places, 1006 transitions, 6497 flow [2023-08-31 22:34:46,261 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:34:46,261 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1071 places, 1006 transitions, 6497 flow [2023-08-31 22:34:46,261 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1071 places, 1006 transitions, 6497 flow [2023-08-31 22:34:46,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1071 places, 1006 transitions, 6497 flow [2023-08-31 22:34:47,390 INFO L130 PetriNetUnfolder]: 131/2109 cut-off events. [2023-08-31 22:34:47,391 INFO L131 PetriNetUnfolder]: For 47840/47840 co-relation queries the response was YES. [2023-08-31 22:34:47,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4450 conditions, 2109 events. 131/2109 cut-off events. For 47840/47840 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 6720 event pairs, 0 based on Foata normal form. 0/1649 useless extension candidates. Maximal degree in co-relation 4339. Up to 132 conditions per place. [2023-08-31 22:34:47,957 INFO L119 LiptonReduction]: Number of co-enabled transitions 906360 [2023-08-31 22:35:00,062 INFO L134 LiptonReduction]: Checked pairs total: 4258847 [2023-08-31 22:35:00,062 INFO L136 LiptonReduction]: Total number of compositions: 417 [2023-08-31 22:35:00,063 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:35:00,064 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:35:00,064 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:35:00,482 INFO L130 PetriNetUnfolder]: 64/1107 cut-off events. [2023-08-31 22:35:00,482 INFO L131 PetriNetUnfolder]: For 47840/47840 co-relation queries the response was YES. [2023-08-31 22:35:00,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:35:00,482 INFO L208 CegarLoopForPetriNet]: trace histogram [66, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:35:00,482 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:35:00,482 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:35:00,482 INFO L85 PathProgramCache]: Analyzing trace with hash 775745757, now seen corresponding path program 1 times [2023-08-31 22:35:00,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:35:00,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016749810] [2023-08-31 22:35:00,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:35:00,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:35:00,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:35:00,570 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:35:00,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:35:00,693 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:35:00,693 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:35:00,694 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:35:00,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2023-08-31 22:35:00,694 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:35:00,694 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:35:00,694 WARN L233 ceAbstractionStarter]: 65 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:35:00,694 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 66 thread instances. [2023-08-31 22:35:00,812 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:35:00,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1087 places, 1021 transitions, 6662 flow [2023-08-31 22:35:01,849 INFO L130 PetriNetUnfolder]: 133/2141 cut-off events. [2023-08-31 22:35:01,849 INFO L131 PetriNetUnfolder]: For 50050/50050 co-relation queries the response was YES. [2023-08-31 22:35:01,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4551 conditions, 2141 events. 133/2141 cut-off events. For 50050/50050 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 6837 event pairs, 0 based on Foata normal form. 0/1674 useless extension candidates. Maximal degree in co-relation 4439. Up to 134 conditions per place. [2023-08-31 22:35:01,962 INFO L82 GeneralOperation]: Start removeDead. Operand has 1087 places, 1021 transitions, 6662 flow [2023-08-31 22:35:01,976 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1087 places, 1021 transitions, 6662 flow [2023-08-31 22:35:01,976 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:35:01,977 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1087 places, 1021 transitions, 6662 flow [2023-08-31 22:35:01,977 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1087 places, 1021 transitions, 6662 flow [2023-08-31 22:35:01,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1087 places, 1021 transitions, 6662 flow [2023-08-31 22:35:03,126 INFO L130 PetriNetUnfolder]: 133/2141 cut-off events. [2023-08-31 22:35:03,126 INFO L131 PetriNetUnfolder]: For 50050/50050 co-relation queries the response was YES. [2023-08-31 22:35:03,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4551 conditions, 2141 events. 133/2141 cut-off events. For 50050/50050 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 6837 event pairs, 0 based on Foata normal form. 0/1674 useless extension candidates. Maximal degree in co-relation 4439. Up to 134 conditions per place. [2023-08-31 22:35:03,810 INFO L119 LiptonReduction]: Number of co-enabled transitions 934164 [2023-08-31 22:35:16,237 INFO L134 LiptonReduction]: Checked pairs total: 5159913 [2023-08-31 22:35:16,237 INFO L136 LiptonReduction]: Total number of compositions: 423 [2023-08-31 22:35:16,238 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:35:16,238 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:35:16,238 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:35:16,632 INFO L130 PetriNetUnfolder]: 65/1124 cut-off events. [2023-08-31 22:35:16,632 INFO L131 PetriNetUnfolder]: For 50050/50050 co-relation queries the response was YES. [2023-08-31 22:35:16,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:35:16,633 INFO L208 CegarLoopForPetriNet]: trace histogram [67, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:35:16,633 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:35:16,633 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:35:16,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1112995341, now seen corresponding path program 1 times [2023-08-31 22:35:16,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:35:16,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56076116] [2023-08-31 22:35:16,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:35:16,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:35:16,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:35:16,716 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:35:16,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:35:16,848 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:35:16,848 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:35:16,849 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:35:16,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2023-08-31 22:35:16,849 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:35:16,849 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:35:16,849 WARN L233 ceAbstractionStarter]: 66 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:35:16,849 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 67 thread instances. [2023-08-31 22:35:16,967 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:35:16,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1103 places, 1036 transitions, 6829 flow [2023-08-31 22:35:18,224 INFO L130 PetriNetUnfolder]: 135/2173 cut-off events. [2023-08-31 22:35:18,225 INFO L131 PetriNetUnfolder]: For 52327/52327 co-relation queries the response was YES. [2023-08-31 22:35:18,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4653 conditions, 2173 events. 135/2173 cut-off events. For 52327/52327 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 6938 event pairs, 0 based on Foata normal form. 0/1699 useless extension candidates. Maximal degree in co-relation 4540. Up to 136 conditions per place. [2023-08-31 22:35:18,332 INFO L82 GeneralOperation]: Start removeDead. Operand has 1103 places, 1036 transitions, 6829 flow [2023-08-31 22:35:18,347 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1103 places, 1036 transitions, 6829 flow [2023-08-31 22:35:18,347 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:35:18,347 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1103 places, 1036 transitions, 6829 flow [2023-08-31 22:35:18,347 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1103 places, 1036 transitions, 6829 flow [2023-08-31 22:35:18,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1103 places, 1036 transitions, 6829 flow [2023-08-31 22:35:19,686 INFO L130 PetriNetUnfolder]: 135/2173 cut-off events. [2023-08-31 22:35:19,686 INFO L131 PetriNetUnfolder]: For 52327/52327 co-relation queries the response was YES. [2023-08-31 22:35:19,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4653 conditions, 2173 events. 135/2173 cut-off events. For 52327/52327 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 6938 event pairs, 0 based on Foata normal form. 0/1699 useless extension candidates. Maximal degree in co-relation 4540. Up to 136 conditions per place. [2023-08-31 22:35:20,215 INFO L119 LiptonReduction]: Number of co-enabled transitions 962388 [2023-08-31 22:35:32,789 INFO L134 LiptonReduction]: Checked pairs total: 4540316 [2023-08-31 22:35:32,789 INFO L136 LiptonReduction]: Total number of compositions: 429 [2023-08-31 22:35:32,790 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:35:32,790 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:35:32,790 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:35:33,151 INFO L130 PetriNetUnfolder]: 66/1141 cut-off events. [2023-08-31 22:35:33,152 INFO L131 PetriNetUnfolder]: For 52327/52327 co-relation queries the response was YES. [2023-08-31 22:35:33,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:35:33,152 INFO L208 CegarLoopForPetriNet]: trace histogram [68, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:35:33,152 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:35:33,152 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:35:33,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1353955311, now seen corresponding path program 1 times [2023-08-31 22:35:33,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:35:33,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113222440] [2023-08-31 22:35:33,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:35:33,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:35:33,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:35:33,281 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:35:33,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:35:33,383 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:35:33,384 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:35:33,384 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:35:33,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2023-08-31 22:35:33,384 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:35:33,384 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:35:33,384 WARN L233 ceAbstractionStarter]: 67 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:35:33,384 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 68 thread instances. [2023-08-31 22:35:33,501 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:35:33,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1119 places, 1051 transitions, 6998 flow [2023-08-31 22:35:34,783 INFO L130 PetriNetUnfolder]: 137/2205 cut-off events. [2023-08-31 22:35:34,784 INFO L131 PetriNetUnfolder]: For 54672/54672 co-relation queries the response was YES. [2023-08-31 22:35:34,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4756 conditions, 2205 events. 137/2205 cut-off events. For 54672/54672 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 7058 event pairs, 0 based on Foata normal form. 0/1724 useless extension candidates. Maximal degree in co-relation 4642. Up to 138 conditions per place. [2023-08-31 22:35:34,895 INFO L82 GeneralOperation]: Start removeDead. Operand has 1119 places, 1051 transitions, 6998 flow [2023-08-31 22:35:34,985 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1119 places, 1051 transitions, 6998 flow [2023-08-31 22:35:34,986 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:35:34,986 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1119 places, 1051 transitions, 6998 flow [2023-08-31 22:35:34,986 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1119 places, 1051 transitions, 6998 flow [2023-08-31 22:35:34,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1119 places, 1051 transitions, 6998 flow [2023-08-31 22:35:36,111 INFO L130 PetriNetUnfolder]: 137/2205 cut-off events. [2023-08-31 22:35:36,111 INFO L131 PetriNetUnfolder]: For 54672/54672 co-relation queries the response was YES. [2023-08-31 22:35:36,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4756 conditions, 2205 events. 137/2205 cut-off events. For 54672/54672 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 7058 event pairs, 0 based on Foata normal form. 0/1724 useless extension candidates. Maximal degree in co-relation 4642. Up to 138 conditions per place. [2023-08-31 22:35:36,657 INFO L119 LiptonReduction]: Number of co-enabled transitions 991032 [2023-08-31 22:35:49,746 INFO L134 LiptonReduction]: Checked pairs total: 5408195 [2023-08-31 22:35:49,746 INFO L136 LiptonReduction]: Total number of compositions: 435 [2023-08-31 22:35:49,747 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:35:49,747 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:35:49,747 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:35:50,136 INFO L130 PetriNetUnfolder]: 67/1158 cut-off events. [2023-08-31 22:35:50,136 INFO L131 PetriNetUnfolder]: For 54672/54672 co-relation queries the response was YES. [2023-08-31 22:35:50,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:35:50,137 INFO L208 CegarLoopForPetriNet]: trace histogram [69, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:35:50,137 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:35:50,137 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:35:50,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1370952851, now seen corresponding path program 1 times [2023-08-31 22:35:50,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:35:50,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099792462] [2023-08-31 22:35:50,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:35:50,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:35:50,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:35:50,298 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:35:50,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:35:50,461 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:35:50,462 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:35:50,462 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:35:50,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2023-08-31 22:35:50,462 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:35:50,463 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:35:50,463 WARN L233 ceAbstractionStarter]: 68 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:35:50,463 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 69 thread instances. [2023-08-31 22:35:50,594 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:35:50,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1135 places, 1066 transitions, 7169 flow [2023-08-31 22:35:51,924 INFO L130 PetriNetUnfolder]: 139/2237 cut-off events. [2023-08-31 22:35:51,924 INFO L131 PetriNetUnfolder]: For 57086/57086 co-relation queries the response was YES. [2023-08-31 22:35:52,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4860 conditions, 2237 events. 139/2237 cut-off events. For 57086/57086 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 7157 event pairs, 0 based on Foata normal form. 0/1749 useless extension candidates. Maximal degree in co-relation 4745. Up to 140 conditions per place. [2023-08-31 22:35:52,041 INFO L82 GeneralOperation]: Start removeDead. Operand has 1135 places, 1066 transitions, 7169 flow [2023-08-31 22:35:52,055 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1135 places, 1066 transitions, 7169 flow [2023-08-31 22:35:52,055 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:35:52,055 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1135 places, 1066 transitions, 7169 flow [2023-08-31 22:35:52,055 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1135 places, 1066 transitions, 7169 flow [2023-08-31 22:35:52,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1135 places, 1066 transitions, 7169 flow [2023-08-31 22:35:53,335 INFO L130 PetriNetUnfolder]: 139/2237 cut-off events. [2023-08-31 22:35:53,335 INFO L131 PetriNetUnfolder]: For 57086/57086 co-relation queries the response was YES. [2023-08-31 22:35:53,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4860 conditions, 2237 events. 139/2237 cut-off events. For 57086/57086 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 7157 event pairs, 0 based on Foata normal form. 0/1749 useless extension candidates. Maximal degree in co-relation 4745. Up to 140 conditions per place. [2023-08-31 22:35:53,906 INFO L119 LiptonReduction]: Number of co-enabled transitions 1020096 [2023-08-31 22:36:07,023 INFO L134 LiptonReduction]: Checked pairs total: 4827161 [2023-08-31 22:36:07,023 INFO L136 LiptonReduction]: Total number of compositions: 441 [2023-08-31 22:36:07,024 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:36:07,024 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:36:07,024 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:36:07,493 INFO L130 PetriNetUnfolder]: 68/1175 cut-off events. [2023-08-31 22:36:07,493 INFO L131 PetriNetUnfolder]: For 57086/57086 co-relation queries the response was YES. [2023-08-31 22:36:07,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:36:07,493 INFO L208 CegarLoopForPetriNet]: trace histogram [70, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:36:07,494 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:36:07,494 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:36:07,494 INFO L85 PathProgramCache]: Analyzing trace with hash 10951187, now seen corresponding path program 1 times [2023-08-31 22:36:07,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:36:07,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146682004] [2023-08-31 22:36:07,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:36:07,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:36:07,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:36:07,600 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:36:07,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:36:07,780 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:36:07,780 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:36:07,780 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:36:07,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2023-08-31 22:36:07,781 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:36:07,781 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:36:07,781 WARN L233 ceAbstractionStarter]: 69 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:36:07,781 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 70 thread instances. [2023-08-31 22:36:07,919 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:36:07,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1151 places, 1081 transitions, 7342 flow [2023-08-31 22:36:09,275 INFO L130 PetriNetUnfolder]: 141/2269 cut-off events. [2023-08-31 22:36:09,275 INFO L131 PetriNetUnfolder]: For 59570/59570 co-relation queries the response was YES. [2023-08-31 22:36:09,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4965 conditions, 2269 events. 141/2269 cut-off events. For 59570/59570 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 7260 event pairs, 0 based on Foata normal form. 0/1774 useless extension candidates. Maximal degree in co-relation 4849. Up to 142 conditions per place. [2023-08-31 22:36:09,394 INFO L82 GeneralOperation]: Start removeDead. Operand has 1151 places, 1081 transitions, 7342 flow [2023-08-31 22:36:09,408 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1151 places, 1081 transitions, 7342 flow [2023-08-31 22:36:09,408 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:36:09,408 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1151 places, 1081 transitions, 7342 flow [2023-08-31 22:36:09,408 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1151 places, 1081 transitions, 7342 flow [2023-08-31 22:36:09,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1151 places, 1081 transitions, 7342 flow [2023-08-31 22:36:10,753 INFO L130 PetriNetUnfolder]: 141/2269 cut-off events. [2023-08-31 22:36:10,753 INFO L131 PetriNetUnfolder]: For 59570/59570 co-relation queries the response was YES. [2023-08-31 22:36:10,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4965 conditions, 2269 events. 141/2269 cut-off events. For 59570/59570 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 7260 event pairs, 0 based on Foata normal form. 0/1774 useless extension candidates. Maximal degree in co-relation 4849. Up to 142 conditions per place. [2023-08-31 22:36:11,369 INFO L119 LiptonReduction]: Number of co-enabled transitions 1049580 [2023-08-31 22:36:24,858 INFO L134 LiptonReduction]: Checked pairs total: 5790707 [2023-08-31 22:36:24,858 INFO L136 LiptonReduction]: Total number of compositions: 447 [2023-08-31 22:36:24,859 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:36:24,859 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:36:24,860 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:36:25,277 INFO L130 PetriNetUnfolder]: 69/1192 cut-off events. [2023-08-31 22:36:25,277 INFO L131 PetriNetUnfolder]: For 59570/59570 co-relation queries the response was YES. [2023-08-31 22:36:25,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:36:25,277 INFO L208 CegarLoopForPetriNet]: trace histogram [71, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:36:25,278 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:36:25,278 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:36:25,278 INFO L85 PathProgramCache]: Analyzing trace with hash 382885356, now seen corresponding path program 1 times [2023-08-31 22:36:25,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:36:25,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829185366] [2023-08-31 22:36:25,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:36:25,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:36:25,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:36:25,368 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:36:25,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:36:25,495 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:36:25,495 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:36:25,495 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:36:25,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2023-08-31 22:36:25,495 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:36:25,495 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:36:25,495 WARN L233 ceAbstractionStarter]: 70 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:36:25,495 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 71 thread instances. [2023-08-31 22:36:25,676 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:36:25,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1167 places, 1096 transitions, 7517 flow [2023-08-31 22:36:27,195 INFO L130 PetriNetUnfolder]: 143/2301 cut-off events. [2023-08-31 22:36:27,195 INFO L131 PetriNetUnfolder]: For 62125/62125 co-relation queries the response was YES. [2023-08-31 22:36:27,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5071 conditions, 2301 events. 143/2301 cut-off events. For 62125/62125 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 7482 event pairs, 0 based on Foata normal form. 0/1799 useless extension candidates. Maximal degree in co-relation 4954. Up to 144 conditions per place. [2023-08-31 22:36:27,319 INFO L82 GeneralOperation]: Start removeDead. Operand has 1167 places, 1096 transitions, 7517 flow [2023-08-31 22:36:27,334 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1167 places, 1096 transitions, 7517 flow [2023-08-31 22:36:27,334 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:36:27,334 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1167 places, 1096 transitions, 7517 flow [2023-08-31 22:36:27,334 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1167 places, 1096 transitions, 7517 flow [2023-08-31 22:36:27,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1167 places, 1096 transitions, 7517 flow [2023-08-31 22:36:29,327 INFO L130 PetriNetUnfolder]: 143/2301 cut-off events. [2023-08-31 22:36:29,328 INFO L131 PetriNetUnfolder]: For 62125/62125 co-relation queries the response was YES. [2023-08-31 22:36:29,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5071 conditions, 2301 events. 143/2301 cut-off events. For 62125/62125 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 7482 event pairs, 0 based on Foata normal form. 0/1799 useless extension candidates. Maximal degree in co-relation 4954. Up to 144 conditions per place. [2023-08-31 22:36:29,955 INFO L119 LiptonReduction]: Number of co-enabled transitions 1079484 [2023-08-31 22:36:43,655 INFO L134 LiptonReduction]: Checked pairs total: 5969165 [2023-08-31 22:36:43,655 INFO L136 LiptonReduction]: Total number of compositions: 453 [2023-08-31 22:36:43,656 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:36:43,656 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:36:43,656 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:36:44,121 INFO L130 PetriNetUnfolder]: 70/1209 cut-off events. [2023-08-31 22:36:44,122 INFO L131 PetriNetUnfolder]: For 62125/62125 co-relation queries the response was YES. [2023-08-31 22:36:44,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:36:44,122 INFO L208 CegarLoopForPetriNet]: trace histogram [72, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:36:44,122 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:36:44,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:36:44,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1452402927, now seen corresponding path program 1 times [2023-08-31 22:36:44,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:36:44,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996224963] [2023-08-31 22:36:44,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:36:44,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:36:44,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:36:44,207 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:36:44,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:36:44,360 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:36:44,360 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:36:44,360 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:36:44,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2023-08-31 22:36:44,360 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:36:44,361 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:36:44,361 WARN L233 ceAbstractionStarter]: 71 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:36:44,361 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 72 thread instances. [2023-08-31 22:36:44,493 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:36:44,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1183 places, 1111 transitions, 7694 flow [2023-08-31 22:36:46,074 INFO L130 PetriNetUnfolder]: 145/2333 cut-off events. [2023-08-31 22:36:46,074 INFO L131 PetriNetUnfolder]: For 64752/64752 co-relation queries the response was YES. [2023-08-31 22:36:46,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5178 conditions, 2333 events. 145/2333 cut-off events. For 64752/64752 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 7470 event pairs, 0 based on Foata normal form. 0/1824 useless extension candidates. Maximal degree in co-relation 5060. Up to 146 conditions per place. [2023-08-31 22:36:46,197 INFO L82 GeneralOperation]: Start removeDead. Operand has 1183 places, 1111 transitions, 7694 flow [2023-08-31 22:36:46,212 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1183 places, 1111 transitions, 7694 flow [2023-08-31 22:36:46,212 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:36:46,212 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1183 places, 1111 transitions, 7694 flow [2023-08-31 22:36:46,213 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1183 places, 1111 transitions, 7694 flow [2023-08-31 22:36:46,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1183 places, 1111 transitions, 7694 flow [2023-08-31 22:36:47,569 INFO L130 PetriNetUnfolder]: 145/2333 cut-off events. [2023-08-31 22:36:47,569 INFO L131 PetriNetUnfolder]: For 64752/64752 co-relation queries the response was YES. [2023-08-31 22:36:47,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5178 conditions, 2333 events. 145/2333 cut-off events. For 64752/64752 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 7470 event pairs, 0 based on Foata normal form. 0/1824 useless extension candidates. Maximal degree in co-relation 5060. Up to 146 conditions per place. [2023-08-31 22:36:48,193 INFO L119 LiptonReduction]: Number of co-enabled transitions 1109808 [2023-08-31 22:37:01,832 INFO L134 LiptonReduction]: Checked pairs total: 5212055 [2023-08-31 22:37:01,832 INFO L136 LiptonReduction]: Total number of compositions: 459 [2023-08-31 22:37:01,833 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:37:01,833 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:37:01,833 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:37:02,268 INFO L130 PetriNetUnfolder]: 71/1226 cut-off events. [2023-08-31 22:37:02,268 INFO L131 PetriNetUnfolder]: For 64752/64752 co-relation queries the response was YES. [2023-08-31 22:37:02,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:37:02,268 INFO L208 CegarLoopForPetriNet]: trace histogram [73, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:37:02,269 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:37:02,269 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:37:02,269 INFO L85 PathProgramCache]: Analyzing trace with hash 256414153, now seen corresponding path program 1 times [2023-08-31 22:37:02,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:37:02,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617969353] [2023-08-31 22:37:02,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:37:02,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:37:02,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:37:02,404 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:37:02,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:37:02,596 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:37:02,596 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:37:02,596 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:37:02,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2023-08-31 22:37:02,597 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:37:02,597 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:37:02,597 WARN L233 ceAbstractionStarter]: 72 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:37:02,597 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 73 thread instances. [2023-08-31 22:37:02,755 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:37:02,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1199 places, 1126 transitions, 7873 flow [2023-08-31 22:37:04,272 INFO L130 PetriNetUnfolder]: 147/2365 cut-off events. [2023-08-31 22:37:04,273 INFO L131 PetriNetUnfolder]: For 67452/67452 co-relation queries the response was YES. [2023-08-31 22:37:04,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5286 conditions, 2365 events. 147/2365 cut-off events. For 67452/67452 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 7567 event pairs, 0 based on Foata normal form. 0/1849 useless extension candidates. Maximal degree in co-relation 5167. Up to 148 conditions per place. [2023-08-31 22:37:04,406 INFO L82 GeneralOperation]: Start removeDead. Operand has 1199 places, 1126 transitions, 7873 flow [2023-08-31 22:37:04,423 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1199 places, 1126 transitions, 7873 flow [2023-08-31 22:37:04,423 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:37:04,423 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1199 places, 1126 transitions, 7873 flow [2023-08-31 22:37:04,423 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1199 places, 1126 transitions, 7873 flow [2023-08-31 22:37:04,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1199 places, 1126 transitions, 7873 flow [2023-08-31 22:37:05,997 INFO L130 PetriNetUnfolder]: 147/2365 cut-off events. [2023-08-31 22:37:05,997 INFO L131 PetriNetUnfolder]: For 67452/67452 co-relation queries the response was YES. [2023-08-31 22:37:06,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5286 conditions, 2365 events. 147/2365 cut-off events. For 67452/67452 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 7567 event pairs, 0 based on Foata normal form. 0/1849 useless extension candidates. Maximal degree in co-relation 5167. Up to 148 conditions per place. [2023-08-31 22:37:06,638 INFO L119 LiptonReduction]: Number of co-enabled transitions 1140552 [2023-08-31 22:37:20,397 INFO L134 LiptonReduction]: Checked pairs total: 6257500 [2023-08-31 22:37:20,397 INFO L136 LiptonReduction]: Total number of compositions: 465 [2023-08-31 22:37:20,398 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:37:20,398 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:37:20,398 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:37:20,890 INFO L130 PetriNetUnfolder]: 72/1243 cut-off events. [2023-08-31 22:37:20,890 INFO L131 PetriNetUnfolder]: For 67452/67452 co-relation queries the response was YES. [2023-08-31 22:37:20,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:37:20,890 INFO L208 CegarLoopForPetriNet]: trace histogram [74, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:37:20,890 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:37:20,891 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:37:20,891 INFO L85 PathProgramCache]: Analyzing trace with hash 279719381, now seen corresponding path program 1 times [2023-08-31 22:37:20,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:37:20,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448340199] [2023-08-31 22:37:20,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:37:20,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:37:20,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:37:20,997 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:37:21,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:37:21,164 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:37:21,164 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:37:21,164 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:37:21,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2023-08-31 22:37:21,165 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:37:21,165 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:37:21,165 WARN L233 ceAbstractionStarter]: 73 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:37:21,165 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 74 thread instances. [2023-08-31 22:37:21,291 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:37:21,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1215 places, 1141 transitions, 8054 flow [2023-08-31 22:37:22,742 INFO L130 PetriNetUnfolder]: 149/2397 cut-off events. [2023-08-31 22:37:22,742 INFO L131 PetriNetUnfolder]: For 70226/70226 co-relation queries the response was YES. [2023-08-31 22:37:22,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5395 conditions, 2397 events. 149/2397 cut-off events. For 70226/70226 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 7670 event pairs, 0 based on Foata normal form. 0/1874 useless extension candidates. Maximal degree in co-relation 5275. Up to 150 conditions per place. [2023-08-31 22:37:22,880 INFO L82 GeneralOperation]: Start removeDead. Operand has 1215 places, 1141 transitions, 8054 flow [2023-08-31 22:37:22,896 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1215 places, 1141 transitions, 8054 flow [2023-08-31 22:37:22,897 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:37:22,897 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1215 places, 1141 transitions, 8054 flow [2023-08-31 22:37:22,897 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1215 places, 1141 transitions, 8054 flow [2023-08-31 22:37:22,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1215 places, 1141 transitions, 8054 flow [2023-08-31 22:37:24,464 INFO L130 PetriNetUnfolder]: 149/2397 cut-off events. [2023-08-31 22:37:24,464 INFO L131 PetriNetUnfolder]: For 70226/70226 co-relation queries the response was YES. [2023-08-31 22:37:24,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5395 conditions, 2397 events. 149/2397 cut-off events. For 70226/70226 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 7670 event pairs, 0 based on Foata normal form. 0/1874 useless extension candidates. Maximal degree in co-relation 5275. Up to 150 conditions per place. [2023-08-31 22:37:25,126 INFO L119 LiptonReduction]: Number of co-enabled transitions 1171716 [2023-08-31 22:37:39,401 INFO L134 LiptonReduction]: Checked pairs total: 6417672 [2023-08-31 22:37:39,401 INFO L136 LiptonReduction]: Total number of compositions: 471 [2023-08-31 22:37:39,402 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:37:39,403 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:37:39,403 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:37:39,924 INFO L130 PetriNetUnfolder]: 73/1260 cut-off events. [2023-08-31 22:37:39,925 INFO L131 PetriNetUnfolder]: For 70226/70226 co-relation queries the response was YES. [2023-08-31 22:37:39,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:37:39,925 INFO L208 CegarLoopForPetriNet]: trace histogram [75, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:37:39,925 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:37:39,925 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:37:39,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1767845325, now seen corresponding path program 1 times [2023-08-31 22:37:39,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:37:39,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946719203] [2023-08-31 22:37:39,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:37:39,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:37:40,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:37:40,041 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:37:40,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:37:40,199 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:37:40,199 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:37:40,199 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:37:40,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2023-08-31 22:37:40,200 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:37:40,200 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:37:40,200 WARN L233 ceAbstractionStarter]: 74 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:37:40,200 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 75 thread instances. [2023-08-31 22:37:40,330 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:37:40,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1231 places, 1156 transitions, 8237 flow [2023-08-31 22:37:41,864 INFO L130 PetriNetUnfolder]: 151/2429 cut-off events. [2023-08-31 22:37:41,864 INFO L131 PetriNetUnfolder]: For 73075/73075 co-relation queries the response was YES. [2023-08-31 22:37:42,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5505 conditions, 2429 events. 151/2429 cut-off events. For 73075/73075 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 7781 event pairs, 0 based on Foata normal form. 0/1899 useless extension candidates. Maximal degree in co-relation 5384. Up to 152 conditions per place. [2023-08-31 22:37:42,009 INFO L82 GeneralOperation]: Start removeDead. Operand has 1231 places, 1156 transitions, 8237 flow [2023-08-31 22:37:42,026 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1231 places, 1156 transitions, 8237 flow [2023-08-31 22:37:42,026 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:37:42,026 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1231 places, 1156 transitions, 8237 flow [2023-08-31 22:37:42,026 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1231 places, 1156 transitions, 8237 flow [2023-08-31 22:37:42,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1231 places, 1156 transitions, 8237 flow [2023-08-31 22:37:43,726 INFO L130 PetriNetUnfolder]: 151/2429 cut-off events. [2023-08-31 22:37:43,727 INFO L131 PetriNetUnfolder]: For 73075/73075 co-relation queries the response was YES. [2023-08-31 22:37:43,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5505 conditions, 2429 events. 151/2429 cut-off events. For 73075/73075 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 7781 event pairs, 0 based on Foata normal form. 0/1899 useless extension candidates. Maximal degree in co-relation 5384. Up to 152 conditions per place. [2023-08-31 22:37:44,413 INFO L119 LiptonReduction]: Number of co-enabled transitions 1203300 [2023-08-31 22:37:58,936 INFO L134 LiptonReduction]: Checked pairs total: 6582534 [2023-08-31 22:37:58,936 INFO L136 LiptonReduction]: Total number of compositions: 477 [2023-08-31 22:37:58,937 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:37:58,937 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:37:58,937 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:37:59,455 INFO L130 PetriNetUnfolder]: 74/1277 cut-off events. [2023-08-31 22:37:59,455 INFO L131 PetriNetUnfolder]: For 73075/73075 co-relation queries the response was YES. [2023-08-31 22:37:59,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:37:59,455 INFO L208 CegarLoopForPetriNet]: trace histogram [76, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:37:59,455 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:37:59,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:37:59,456 INFO L85 PathProgramCache]: Analyzing trace with hash 862557295, now seen corresponding path program 1 times [2023-08-31 22:37:59,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:37:59,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224790740] [2023-08-31 22:37:59,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:37:59,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:37:59,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:37:59,563 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:37:59,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:37:59,705 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:37:59,706 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:37:59,706 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:37:59,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2023-08-31 22:37:59,706 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:37:59,706 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:37:59,706 WARN L233 ceAbstractionStarter]: 75 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:37:59,706 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 76 thread instances. [2023-08-31 22:37:59,838 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:37:59,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1247 places, 1171 transitions, 8422 flow [2023-08-31 22:38:01,530 INFO L130 PetriNetUnfolder]: 153/2461 cut-off events. [2023-08-31 22:38:01,530 INFO L131 PetriNetUnfolder]: For 76000/76000 co-relation queries the response was YES. [2023-08-31 22:38:01,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5616 conditions, 2461 events. 153/2461 cut-off events. For 76000/76000 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 7902 event pairs, 0 based on Foata normal form. 0/1924 useless extension candidates. Maximal degree in co-relation 5494. Up to 154 conditions per place. [2023-08-31 22:38:01,673 INFO L82 GeneralOperation]: Start removeDead. Operand has 1247 places, 1171 transitions, 8422 flow [2023-08-31 22:38:01,689 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1247 places, 1171 transitions, 8422 flow [2023-08-31 22:38:01,689 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:38:01,689 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1247 places, 1171 transitions, 8422 flow [2023-08-31 22:38:01,690 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1247 places, 1171 transitions, 8422 flow [2023-08-31 22:38:01,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1247 places, 1171 transitions, 8422 flow [2023-08-31 22:38:03,220 INFO L130 PetriNetUnfolder]: 153/2461 cut-off events. [2023-08-31 22:38:03,221 INFO L131 PetriNetUnfolder]: For 76000/76000 co-relation queries the response was YES. [2023-08-31 22:38:03,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5616 conditions, 2461 events. 153/2461 cut-off events. For 76000/76000 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 7902 event pairs, 0 based on Foata normal form. 0/1924 useless extension candidates. Maximal degree in co-relation 5494. Up to 154 conditions per place. [2023-08-31 22:38:04,011 INFO L119 LiptonReduction]: Number of co-enabled transitions 1235304 [2023-08-31 22:38:18,736 INFO L134 LiptonReduction]: Checked pairs total: 6821767 [2023-08-31 22:38:18,736 INFO L136 LiptonReduction]: Total number of compositions: 483 [2023-08-31 22:38:18,737 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 22:38:18,737 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5fe86996, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:38:18,737 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 22:38:19,392 INFO L130 PetriNetUnfolder]: 75/1294 cut-off events. [2023-08-31 22:38:19,392 INFO L131 PetriNetUnfolder]: For 76000/76000 co-relation queries the response was YES. [2023-08-31 22:38:19,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:38:19,392 INFO L208 CegarLoopForPetriNet]: trace histogram [77, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:38:19,392 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 22:38:19,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:38:19,393 INFO L85 PathProgramCache]: Analyzing trace with hash 274749267, now seen corresponding path program 1 times [2023-08-31 22:38:19,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:38:19,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712416742] [2023-08-31 22:38:19,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:38:19,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:38:19,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:38:19,516 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 22:38:19,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 22:38:19,671 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 22:38:19,672 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 22:38:19,672 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 22:38:19,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2023-08-31 22:38:19,672 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 22:38:19,672 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 22:38:19,672 WARN L233 ceAbstractionStarter]: 76 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 22:38:19,672 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 77 thread instances. [2023-08-31 22:38:19,810 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 22:38:19,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1263 places, 1186 transitions, 8609 flow Killed by 15