./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_12-ptr_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_12-ptr_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7cd6aaa75855c8ee03a174376352b142cf57dd56532b968b1b6c916585172927 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 06:38:21,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 06:38:21,113 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 06:38:21,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 06:38:21,158 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 06:38:21,161 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 06:38:21,163 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 06:38:21,166 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 06:38:21,167 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 06:38:21,172 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 06:38:21,172 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 06:38:21,175 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 06:38:21,175 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 06:38:21,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 06:38:21,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 06:38:21,183 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 06:38:21,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 06:38:21,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 06:38:21,186 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 06:38:21,187 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 06:38:21,187 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 06:38:21,188 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 06:38:21,194 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 06:38:21,195 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 06:38:21,198 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 06:38:21,203 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 06:38:21,203 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 06:38:21,204 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 06:38:21,206 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 06:38:21,206 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 06:38:21,207 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 06:38:21,210 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 06:38:21,210 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 06:38:21,211 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 06:38:21,212 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 06:38:21,213 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 06:38:21,214 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 06:38:21,214 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 06:38:21,214 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 06:38:21,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 06:38:21,215 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 06:38:21,216 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 06:38:21,246 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 06:38:21,246 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 06:38:21,247 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 06:38:21,248 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 06:38:21,249 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 06:38:21,249 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 06:38:21,249 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 06:38:21,250 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 06:38:21,250 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 06:38:21,250 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 06:38:21,251 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 06:38:21,251 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 06:38:21,251 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 06:38:21,251 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 06:38:21,251 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 06:38:21,252 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 06:38:21,252 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 06:38:21,252 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 06:38:21,252 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 06:38:21,252 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 06:38:21,252 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 06:38:21,253 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 06:38:21,253 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 06:38:21,253 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 06:38:21,253 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 06:38:21,253 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 06:38:21,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:38:21,254 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 06:38:21,254 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 06:38:21,254 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 06:38:21,254 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 06:38:21,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 06:38:21,255 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 06:38:21,255 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 06:38:21,255 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 06:38:21,255 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 06:38:21,255 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 06:38:21,255 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cd6aaa75855c8ee03a174376352b142cf57dd56532b968b1b6c916585172927 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 06:38:21,558 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 06:38:21,582 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 06:38:21,584 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 06:38:21,585 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 06:38:21,586 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 06:38:21,587 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_12-ptr_racefree.i [2023-09-01 06:38:22,807 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 06:38:23,069 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 06:38:23,070 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_12-ptr_racefree.i [2023-09-01 06:38:23,082 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98eeebdbe/5f1f541bf530453aa700d5faa0cc8fb1/FLAG53d308f67 [2023-09-01 06:38:23,094 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98eeebdbe/5f1f541bf530453aa700d5faa0cc8fb1 [2023-09-01 06:38:23,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 06:38:23,097 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 06:38:23,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 06:38:23,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 06:38:23,100 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 06:38:23,100 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:38:23" (1/1) ... [2023-09-01 06:38:23,101 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3de4585b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:38:23, skipping insertion in model container [2023-09-01 06:38:23,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:38:23" (1/1) ... [2023-09-01 06:38:23,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 06:38:23,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 06:38:23,419 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_12-ptr_racefree.i[30176,30189] [2023-09-01 06:38:23,437 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:38:23,452 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 06:38:23,487 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_12-ptr_racefree.i[30176,30189] [2023-09-01 06:38:23,508 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:38:23,550 INFO L208 MainTranslator]: Completed translation [2023-09-01 06:38:23,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:38:23 WrapperNode [2023-09-01 06:38:23,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 06:38:23,551 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 06:38:23,551 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 06:38:23,551 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 06:38:23,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:38:23" (1/1) ... [2023-09-01 06:38:23,578 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:38:23" (1/1) ... [2023-09-01 06:38:23,594 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 88 [2023-09-01 06:38:23,595 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 06:38:23,595 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 06:38:23,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 06:38:23,596 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 06:38:23,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:38:23" (1/1) ... [2023-09-01 06:38:23,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:38:23" (1/1) ... [2023-09-01 06:38:23,619 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:38:23" (1/1) ... [2023-09-01 06:38:23,619 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:38:23" (1/1) ... [2023-09-01 06:38:23,624 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:38:23" (1/1) ... [2023-09-01 06:38:23,628 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:38:23" (1/1) ... [2023-09-01 06:38:23,629 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:38:23" (1/1) ... [2023-09-01 06:38:23,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:38:23" (1/1) ... [2023-09-01 06:38:23,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 06:38:23,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 06:38:23,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 06:38:23,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 06:38:23,634 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:38:23" (1/1) ... [2023-09-01 06:38:23,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:38:23,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:38:23,665 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 06:38:23,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 06:38:23,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 06:38:23,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 06:38:23,697 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 06:38:23,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 06:38:23,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 06:38:23,697 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 06:38:23,697 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 06:38:23,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 06:38:23,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 06:38:23,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 06:38:23,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 06:38:23,699 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 06:38:23,810 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 06:38:23,813 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 06:38:24,037 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 06:38:24,044 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 06:38:24,056 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-09-01 06:38:24,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:38:24 BoogieIcfgContainer [2023-09-01 06:38:24,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 06:38:24,061 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 06:38:24,061 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 06:38:24,064 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 06:38:24,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 06:38:23" (1/3) ... [2023-09-01 06:38:24,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7175538e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:38:24, skipping insertion in model container [2023-09-01 06:38:24,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:38:23" (2/3) ... [2023-09-01 06:38:24,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7175538e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:38:24, skipping insertion in model container [2023-09-01 06:38:24,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:38:24" (3/3) ... [2023-09-01 06:38:24,066 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_12-ptr_racefree.i [2023-09-01 06:38:24,073 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 06:38:24,107 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 06:38:24,107 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-09-01 06:38:24,107 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 06:38:24,211 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 06:38:24,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 132 transitions, 272 flow [2023-09-01 06:38:24,351 INFO L130 PetriNetUnfolder]: 17/166 cut-off events. [2023-09-01 06:38:24,351 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 06:38:24,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 166 events. 17/166 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 391 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 84. Up to 4 conditions per place. [2023-09-01 06:38:24,357 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 132 transitions, 272 flow [2023-09-01 06:38:24,362 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 115 places, 123 transitions, 251 flow [2023-09-01 06:38:24,365 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:38:24,387 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 123 transitions, 251 flow [2023-09-01 06:38:24,391 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 123 transitions, 251 flow [2023-09-01 06:38:24,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 123 transitions, 251 flow [2023-09-01 06:38:24,426 INFO L130 PetriNetUnfolder]: 16/157 cut-off events. [2023-09-01 06:38:24,426 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:38:24,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 157 events. 16/157 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 374 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 84. Up to 4 conditions per place. [2023-09-01 06:38:24,431 INFO L119 LiptonReduction]: Number of co-enabled transitions 3608 [2023-09-01 06:38:27,771 INFO L134 LiptonReduction]: Checked pairs total: 6241 [2023-09-01 06:38:27,771 INFO L136 LiptonReduction]: Total number of compositions: 109 [2023-09-01 06:38:27,798 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:38:27,806 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6d9ab65a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:38:27,806 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:38:27,816 INFO L130 PetriNetUnfolder]: 2/22 cut-off events. [2023-09-01 06:38:27,817 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:38:27,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:38:27,818 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 06:38:27,818 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:38:27,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:38:27,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1811124598, now seen corresponding path program 1 times [2023-09-01 06:38:27,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:38:27,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707666050] [2023-09-01 06:38:27,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:38:27,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:38:27,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:38:27,936 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:38:27,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:38:27,992 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:38:27,994 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:38:27,995 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:38:27,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 06:38:27,998 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:38:28,001 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:38:28,002 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:38:28,002 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 06:38:28,027 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 06:38:28,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 175 transitions, 368 flow [2023-09-01 06:38:28,070 INFO L130 PetriNetUnfolder]: 31/279 cut-off events. [2023-09-01 06:38:28,070 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 06:38:28,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 279 events. 31/279 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 860 event pairs, 0 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 168. Up to 8 conditions per place. [2023-09-01 06:38:28,073 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 175 transitions, 368 flow [2023-09-01 06:38:28,075 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 175 transitions, 368 flow [2023-09-01 06:38:28,075 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:38:28,075 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 161 places, 175 transitions, 368 flow [2023-09-01 06:38:28,076 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 161 places, 175 transitions, 368 flow [2023-09-01 06:38:28,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 175 transitions, 368 flow [2023-09-01 06:38:28,120 INFO L130 PetriNetUnfolder]: 31/279 cut-off events. [2023-09-01 06:38:28,121 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 06:38:28,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 279 events. 31/279 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 860 event pairs, 0 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 168. Up to 8 conditions per place. [2023-09-01 06:38:28,130 INFO L119 LiptonReduction]: Number of co-enabled transitions 12136 [2023-09-01 06:38:31,479 INFO L134 LiptonReduction]: Checked pairs total: 25016 [2023-09-01 06:38:31,479 INFO L136 LiptonReduction]: Total number of compositions: 146 [2023-09-01 06:38:31,482 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:38:31,483 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6d9ab65a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:38:31,483 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:38:31,489 INFO L130 PetriNetUnfolder]: 10/62 cut-off events. [2023-09-01 06:38:31,490 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 06:38:31,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:38:31,490 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 06:38:31,490 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:38:31,491 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:38:31,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1037403500, now seen corresponding path program 1 times [2023-09-01 06:38:31,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:38:31,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071205648] [2023-09-01 06:38:31,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:38:31,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:38:31,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:38:31,535 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:38:31,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:38:31,589 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:38:31,590 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:38:31,590 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:38:31,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 06:38:31,592 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:38:31,593 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:38:31,593 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:38:31,593 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 06:38:31,623 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 06:38:31,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 218 transitions, 466 flow [2023-09-01 06:38:31,689 INFO L130 PetriNetUnfolder]: 50/431 cut-off events. [2023-09-01 06:38:31,689 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 06:38:31,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 431 events. 50/431 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1493 event pairs, 1 based on Foata normal form. 0/345 useless extension candidates. Maximal degree in co-relation 287. Up to 16 conditions per place. [2023-09-01 06:38:31,699 INFO L82 GeneralOperation]: Start removeDead. Operand has 199 places, 218 transitions, 466 flow [2023-09-01 06:38:31,703 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 199 places, 218 transitions, 466 flow [2023-09-01 06:38:31,703 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:38:31,703 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 199 places, 218 transitions, 466 flow [2023-09-01 06:38:31,703 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 199 places, 218 transitions, 466 flow [2023-09-01 06:38:31,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 218 transitions, 466 flow [2023-09-01 06:38:31,762 INFO L130 PetriNetUnfolder]: 50/431 cut-off events. [2023-09-01 06:38:31,763 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 06:38:31,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 431 events. 50/431 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1493 event pairs, 1 based on Foata normal form. 0/345 useless extension candidates. Maximal degree in co-relation 287. Up to 16 conditions per place. [2023-09-01 06:38:31,788 INFO L119 LiptonReduction]: Number of co-enabled transitions 23616 [2023-09-01 06:38:35,284 INFO L134 LiptonReduction]: Checked pairs total: 59438 [2023-09-01 06:38:35,284 INFO L136 LiptonReduction]: Total number of compositions: 182 [2023-09-01 06:38:35,286 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:38:35,287 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6d9ab65a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:38:35,287 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:38:35,295 INFO L130 PetriNetUnfolder]: 19/102 cut-off events. [2023-09-01 06:38:35,295 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 06:38:35,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:38:35,295 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 06:38:35,296 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:38:35,296 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:38:35,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1698081624, now seen corresponding path program 1 times [2023-09-01 06:38:35,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:38:35,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967634593] [2023-09-01 06:38:35,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:38:35,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:38:35,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:38:35,348 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:38:35,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:38:35,379 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:38:35,379 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:38:35,379 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:38:35,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 06:38:35,380 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:38:35,380 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:38:35,380 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:38:35,381 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 06:38:35,409 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 06:38:35,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 237 places, 261 transitions, 566 flow [2023-09-01 06:38:35,518 INFO L130 PetriNetUnfolder]: 81/663 cut-off events. [2023-09-01 06:38:35,518 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 06:38:35,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 718 conditions, 663 events. 81/663 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2639 event pairs, 6 based on Foata normal form. 0/528 useless extension candidates. Maximal degree in co-relation 451. Up to 32 conditions per place. [2023-09-01 06:38:35,529 INFO L82 GeneralOperation]: Start removeDead. Operand has 237 places, 261 transitions, 566 flow [2023-09-01 06:38:35,534 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 237 places, 261 transitions, 566 flow [2023-09-01 06:38:35,534 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:38:35,535 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 237 places, 261 transitions, 566 flow [2023-09-01 06:38:35,535 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 237 places, 261 transitions, 566 flow [2023-09-01 06:38:35,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 237 places, 261 transitions, 566 flow [2023-09-01 06:38:35,640 INFO L130 PetriNetUnfolder]: 81/663 cut-off events. [2023-09-01 06:38:35,640 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 06:38:35,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 718 conditions, 663 events. 81/663 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2639 event pairs, 6 based on Foata normal form. 0/528 useless extension candidates. Maximal degree in co-relation 451. Up to 32 conditions per place. [2023-09-01 06:38:35,668 INFO L119 LiptonReduction]: Number of co-enabled transitions 38704 [2023-09-01 06:38:39,433 INFO L134 LiptonReduction]: Checked pairs total: 101781 [2023-09-01 06:38:39,434 INFO L136 LiptonReduction]: Total number of compositions: 210 [2023-09-01 06:38:39,437 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:38:39,438 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6d9ab65a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:38:39,440 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:38:39,451 INFO L130 PetriNetUnfolder]: 29/152 cut-off events. [2023-09-01 06:38:39,451 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-09-01 06:38:39,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:38:39,452 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 06:38:39,452 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:38:39,452 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:38:39,452 INFO L85 PathProgramCache]: Analyzing trace with hash -931793816, now seen corresponding path program 1 times [2023-09-01 06:38:39,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:38:39,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49518707] [2023-09-01 06:38:39,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:38:39,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:38:39,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:38:39,496 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:38:39,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:38:39,553 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:38:39,556 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:38:39,556 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:38:39,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 06:38:39,557 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:38:39,557 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:38:39,558 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:38:39,558 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 06:38:39,583 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 06:38:39,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 275 places, 304 transitions, 668 flow [2023-09-01 06:38:39,757 INFO L130 PetriNetUnfolder]: 140/1059 cut-off events. [2023-09-01 06:38:39,758 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 06:38:39,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1170 conditions, 1059 events. 140/1059 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4968 event pairs, 23 based on Foata normal form. 0/843 useless extension candidates. Maximal degree in co-relation 708. Up to 80 conditions per place. [2023-09-01 06:38:39,783 INFO L82 GeneralOperation]: Start removeDead. Operand has 275 places, 304 transitions, 668 flow [2023-09-01 06:38:39,792 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 275 places, 304 transitions, 668 flow [2023-09-01 06:38:39,792 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:38:39,793 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 275 places, 304 transitions, 668 flow [2023-09-01 06:38:39,793 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 275 places, 304 transitions, 668 flow [2023-09-01 06:38:39,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 275 places, 304 transitions, 668 flow [2023-09-01 06:38:39,951 INFO L130 PetriNetUnfolder]: 140/1059 cut-off events. [2023-09-01 06:38:39,951 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 06:38:39,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1170 conditions, 1059 events. 140/1059 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4968 event pairs, 23 based on Foata normal form. 0/843 useless extension candidates. Maximal degree in co-relation 708. Up to 80 conditions per place. [2023-09-01 06:38:40,014 INFO L119 LiptonReduction]: Number of co-enabled transitions 57400 [2023-09-01 06:38:43,845 INFO L134 LiptonReduction]: Checked pairs total: 141293 [2023-09-01 06:38:43,846 INFO L136 LiptonReduction]: Total number of compositions: 241 [2023-09-01 06:38:43,850 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:38:43,852 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6d9ab65a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:38:43,852 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:38:43,869 INFO L130 PetriNetUnfolder]: 41/213 cut-off events. [2023-09-01 06:38:43,869 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-09-01 06:38:43,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:38:43,869 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:38:43,874 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:38:43,874 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:38:43,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1592698893, now seen corresponding path program 1 times [2023-09-01 06:38:43,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:38:43,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207620417] [2023-09-01 06:38:43,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:38:43,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:38:43,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:38:43,926 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:38:43,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:38:43,945 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:38:43,946 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:38:43,946 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:38:43,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 06:38:43,946 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:38:43,947 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:38:43,947 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:38:43,947 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 06:38:43,974 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 06:38:43,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 313 places, 347 transitions, 772 flow [2023-09-01 06:38:44,312 INFO L130 PetriNetUnfolder]: 263/1791 cut-off events. [2023-09-01 06:38:44,313 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 06:38:44,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2023 conditions, 1791 events. 263/1791 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 10266 event pairs, 72 based on Foata normal form. 0/1430 useless extension candidates. Maximal degree in co-relation 1158. Up to 192 conditions per place. [2023-09-01 06:38:44,347 INFO L82 GeneralOperation]: Start removeDead. Operand has 313 places, 347 transitions, 772 flow [2023-09-01 06:38:44,362 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 313 places, 347 transitions, 772 flow [2023-09-01 06:38:44,362 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:38:44,362 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 313 places, 347 transitions, 772 flow [2023-09-01 06:38:44,363 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 313 places, 347 transitions, 772 flow [2023-09-01 06:38:44,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 313 places, 347 transitions, 772 flow [2023-09-01 06:38:44,672 INFO L130 PetriNetUnfolder]: 263/1791 cut-off events. [2023-09-01 06:38:44,673 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 06:38:44,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2023 conditions, 1791 events. 263/1791 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 10266 event pairs, 72 based on Foata normal form. 0/1430 useless extension candidates. Maximal degree in co-relation 1158. Up to 192 conditions per place. [2023-09-01 06:38:44,833 INFO L119 LiptonReduction]: Number of co-enabled transitions 79704 [2023-09-01 06:38:48,899 INFO L134 LiptonReduction]: Checked pairs total: 199246 [2023-09-01 06:38:48,899 INFO L136 LiptonReduction]: Total number of compositions: 278 [2023-09-01 06:38:48,901 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:38:48,901 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6d9ab65a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:38:48,902 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:38:48,925 INFO L130 PetriNetUnfolder]: 56/287 cut-off events. [2023-09-01 06:38:48,925 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-09-01 06:38:48,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:38:48,926 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:38:48,926 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:38:48,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:38:48,926 INFO L85 PathProgramCache]: Analyzing trace with hash 882682607, now seen corresponding path program 1 times [2023-09-01 06:38:48,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:38:48,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433474937] [2023-09-01 06:38:48,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:38:48,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:38:48,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:38:48,946 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:38:48,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:38:48,965 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:38:48,966 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:38:48,966 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:38:48,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 06:38:48,966 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:38:48,967 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:38:48,967 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:38:48,967 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 06:38:48,997 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 06:38:49,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 351 places, 390 transitions, 878 flow [2023-09-01 06:38:49,726 INFO L130 PetriNetUnfolder]: 530/3211 cut-off events. [2023-09-01 06:38:49,726 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 06:38:49,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3709 conditions, 3211 events. 530/3211 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 22595 event pairs, 201 based on Foata normal form. 0/2577 useless extension candidates. Maximal degree in co-relation 2009. Up to 448 conditions per place. [2023-09-01 06:38:49,787 INFO L82 GeneralOperation]: Start removeDead. Operand has 351 places, 390 transitions, 878 flow [2023-09-01 06:38:49,818 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 351 places, 390 transitions, 878 flow [2023-09-01 06:38:49,818 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:38:49,819 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 351 places, 390 transitions, 878 flow [2023-09-01 06:38:49,819 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 351 places, 390 transitions, 878 flow [2023-09-01 06:38:49,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 351 places, 390 transitions, 878 flow [2023-09-01 06:38:50,543 INFO L130 PetriNetUnfolder]: 530/3211 cut-off events. [2023-09-01 06:38:50,543 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 06:38:50,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3709 conditions, 3211 events. 530/3211 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 22595 event pairs, 201 based on Foata normal form. 0/2577 useless extension candidates. Maximal degree in co-relation 2009. Up to 448 conditions per place. [2023-09-01 06:38:50,829 INFO L119 LiptonReduction]: Number of co-enabled transitions 105616 [2023-09-01 06:38:55,543 INFO L134 LiptonReduction]: Checked pairs total: 299440 [2023-09-01 06:38:55,543 INFO L136 LiptonReduction]: Total number of compositions: 306 [2023-09-01 06:38:55,545 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:38:55,545 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6d9ab65a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:38:55,546 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:38:55,581 INFO L130 PetriNetUnfolder]: 76/385 cut-off events. [2023-09-01 06:38:55,581 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-09-01 06:38:55,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:38:55,582 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:38:55,582 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:38:55,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:38:55,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1299276459, now seen corresponding path program 1 times [2023-09-01 06:38:55,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:38:55,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405120004] [2023-09-01 06:38:55,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:38:55,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:38:55,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:38:55,604 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:38:55,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:38:55,625 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:38:55,625 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:38:55,625 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:38:55,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 06:38:55,626 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:38:55,626 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:38:55,627 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:38:55,627 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 06:38:55,660 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 06:38:55,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 389 places, 433 transitions, 986 flow [2023-09-01 06:38:57,063 INFO L130 PetriNetUnfolder]: 1117/6039 cut-off events. [2023-09-01 06:38:57,063 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 06:38:57,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7124 conditions, 6039 events. 1117/6039 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 49916 event pairs, 522 based on Foata normal form. 0/4876 useless extension candidates. Maximal degree in co-relation 3693. Up to 1024 conditions per place. [2023-09-01 06:38:57,180 INFO L82 GeneralOperation]: Start removeDead. Operand has 389 places, 433 transitions, 986 flow [2023-09-01 06:38:57,250 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 389 places, 433 transitions, 986 flow [2023-09-01 06:38:57,250 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:38:57,250 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 389 places, 433 transitions, 986 flow [2023-09-01 06:38:57,251 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 389 places, 433 transitions, 986 flow [2023-09-01 06:38:57,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 389 places, 433 transitions, 986 flow [2023-09-01 06:38:58,634 INFO L130 PetriNetUnfolder]: 1117/6039 cut-off events. [2023-09-01 06:38:58,634 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 06:38:58,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7124 conditions, 6039 events. 1117/6039 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 49916 event pairs, 522 based on Foata normal form. 0/4876 useless extension candidates. Maximal degree in co-relation 3693. Up to 1024 conditions per place. [2023-09-01 06:38:59,113 INFO L119 LiptonReduction]: Number of co-enabled transitions 135136 [2023-09-01 06:39:03,927 INFO L134 LiptonReduction]: Checked pairs total: 350446 [2023-09-01 06:39:03,927 INFO L136 LiptonReduction]: Total number of compositions: 342 [2023-09-01 06:39:03,930 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:39:03,931 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6d9ab65a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:39:03,931 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:39:03,993 INFO L130 PetriNetUnfolder]: 105/519 cut-off events. [2023-09-01 06:39:03,993 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-09-01 06:39:03,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:39:03,994 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:39:03,994 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:39:03,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:39:03,995 INFO L85 PathProgramCache]: Analyzing trace with hash 193230056, now seen corresponding path program 1 times [2023-09-01 06:39:03,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:39:03,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526578140] [2023-09-01 06:39:03,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:39:03,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:39:04,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:39:04,023 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:39:04,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:39:04,064 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:39:04,066 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:39:04,066 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:39:04,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 06:39:04,067 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:39:04,068 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:39:04,068 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:39:04,071 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 06:39:04,115 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 06:39:04,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 427 places, 476 transitions, 1096 flow [2023-09-01 06:39:07,041 INFO L130 PetriNetUnfolder]: 2408/11747 cut-off events. [2023-09-01 06:39:07,042 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 06:39:07,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14124 conditions, 11747 events. 2408/11747 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 112765 event pairs, 1291 based on Foata normal form. 0/9543 useless extension candidates. Maximal degree in co-relation 7106. Up to 2304 conditions per place. [2023-09-01 06:39:07,265 INFO L82 GeneralOperation]: Start removeDead. Operand has 427 places, 476 transitions, 1096 flow [2023-09-01 06:39:07,401 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 427 places, 476 transitions, 1096 flow [2023-09-01 06:39:07,401 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:39:07,401 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 427 places, 476 transitions, 1096 flow [2023-09-01 06:39:07,401 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 427 places, 476 transitions, 1096 flow [2023-09-01 06:39:07,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 427 places, 476 transitions, 1096 flow [2023-09-01 06:39:10,149 INFO L130 PetriNetUnfolder]: 2408/11747 cut-off events. [2023-09-01 06:39:10,149 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 06:39:10,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14124 conditions, 11747 events. 2408/11747 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 112765 event pairs, 1291 based on Foata normal form. 0/9543 useless extension candidates. Maximal degree in co-relation 7106. Up to 2304 conditions per place. [2023-09-01 06:39:10,909 INFO L119 LiptonReduction]: Number of co-enabled transitions 168264 [2023-09-01 06:39:16,275 INFO L134 LiptonReduction]: Checked pairs total: 484348 [2023-09-01 06:39:16,275 INFO L136 LiptonReduction]: Total number of compositions: 370 [2023-09-01 06:39:16,278 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:39:16,278 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6d9ab65a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:39:16,278 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:39:16,332 INFO L130 PetriNetUnfolder]: 150/711 cut-off events. [2023-09-01 06:39:16,332 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-09-01 06:39:16,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:39:16,332 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:39:16,333 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:39:16,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:39:16,333 INFO L85 PathProgramCache]: Analyzing trace with hash 236360343, now seen corresponding path program 1 times [2023-09-01 06:39:16,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:39:16,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389205139] [2023-09-01 06:39:16,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:39:16,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:39:16,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:39:16,368 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:39:16,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:39:16,395 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:39:16,395 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:39:16,395 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:39:16,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 06:39:16,395 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:39:16,399 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:39:16,399 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:39:16,399 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 06:39:16,433 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 06:39:16,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 465 places, 519 transitions, 1208 flow [2023-09-01 06:39:22,450 INFO L130 PetriNetUnfolder]: 5235/23343 cut-off events. [2023-09-01 06:39:22,451 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 06:39:22,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28549 conditions, 23343 events. 5235/23343 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 255048 event pairs, 3084 based on Foata normal form. 0/19074 useless extension candidates. Maximal degree in co-relation 14104. Up to 5120 conditions per place. [2023-09-01 06:39:22,985 INFO L82 GeneralOperation]: Start removeDead. Operand has 465 places, 519 transitions, 1208 flow [2023-09-01 06:39:23,345 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 465 places, 519 transitions, 1208 flow [2023-09-01 06:39:23,346 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:39:23,346 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 465 places, 519 transitions, 1208 flow [2023-09-01 06:39:23,346 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 465 places, 519 transitions, 1208 flow [2023-09-01 06:39:23,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 465 places, 519 transitions, 1208 flow [2023-09-01 06:39:29,478 INFO L130 PetriNetUnfolder]: 5235/23343 cut-off events. [2023-09-01 06:39:29,478 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 06:39:29,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28549 conditions, 23343 events. 5235/23343 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 255048 event pairs, 3084 based on Foata normal form. 0/19074 useless extension candidates. Maximal degree in co-relation 14104. Up to 5120 conditions per place. [2023-09-01 06:39:31,321 INFO L119 LiptonReduction]: Number of co-enabled transitions 205000 [2023-09-01 06:39:36,788 INFO L134 LiptonReduction]: Checked pairs total: 535835 [2023-09-01 06:39:36,789 INFO L136 LiptonReduction]: Total number of compositions: 405 [2023-09-01 06:39:36,791 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:39:36,791 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6d9ab65a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:39:36,791 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:39:36,888 INFO L130 PetriNetUnfolder]: 224/994 cut-off events. [2023-09-01 06:39:36,888 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-09-01 06:39:36,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:39:36,888 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:39:36,888 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:39:36,889 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:39:36,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1677460436, now seen corresponding path program 1 times [2023-09-01 06:39:36,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:39:36,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469902491] [2023-09-01 06:39:36,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:39:36,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:39:36,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:39:36,925 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:39:36,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:39:36,951 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:39:36,952 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:39:36,952 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:39:36,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 06:39:36,952 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:39:36,953 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:39:36,953 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:39:36,953 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 06:39:36,992 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 06:39:36,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 503 places, 562 transitions, 1322 flow [2023-09-01 06:39:51,371 INFO L130 PetriNetUnfolder]: 11390/46971 cut-off events. [2023-09-01 06:39:51,372 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 06:39:54,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58335 conditions, 46971 events. 11390/46971 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 575454 event pairs, 7181 based on Foata normal form. 0/38589 useless extension candidates. Maximal degree in co-relation 28527. Up to 11264 conditions per place. [2023-09-01 06:39:54,599 INFO L82 GeneralOperation]: Start removeDead. Operand has 503 places, 562 transitions, 1322 flow [2023-09-01 06:39:55,359 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 503 places, 562 transitions, 1322 flow [2023-09-01 06:39:55,360 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:39:55,360 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 503 places, 562 transitions, 1322 flow [2023-09-01 06:39:55,360 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 503 places, 562 transitions, 1322 flow [2023-09-01 06:39:55,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 503 places, 562 transitions, 1322 flow [2023-09-01 06:40:09,334 INFO L130 PetriNetUnfolder]: 11390/46971 cut-off events. [2023-09-01 06:40:09,335 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 06:40:10,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58335 conditions, 46971 events. 11390/46971 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 575454 event pairs, 7181 based on Foata normal form. 0/38589 useless extension candidates. Maximal degree in co-relation 28527. Up to 11264 conditions per place. [2023-09-01 06:40:13,720 INFO L119 LiptonReduction]: Number of co-enabled transitions 245344 [2023-09-01 06:40:19,711 INFO L134 LiptonReduction]: Checked pairs total: 711904 [2023-09-01 06:40:19,711 INFO L136 LiptonReduction]: Total number of compositions: 446 [2023-09-01 06:40:19,712 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:40:19,713 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6d9ab65a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:40:19,713 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:40:19,859 INFO L130 PetriNetUnfolder]: 349/1428 cut-off events. [2023-09-01 06:40:19,860 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-09-01 06:40:19,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:40:19,860 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:40:19,860 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:40:19,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:40:19,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1983850046, now seen corresponding path program 1 times [2023-09-01 06:40:19,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:40:19,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971959718] [2023-09-01 06:40:19,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:40:19,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:40:19,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:40:19,884 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:40:19,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:40:19,909 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:40:19,910 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:40:19,910 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:40:19,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 06:40:19,910 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:40:19,912 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:40:19,912 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:40:19,912 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 06:40:19,995 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 06:40:19,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 541 places, 605 transitions, 1438 flow [2023-09-01 06:40:55,164 INFO L130 PetriNetUnfolder]: 24713/95175 cut-off events. [2023-09-01 06:40:55,164 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 06:41:02,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119866 conditions, 95175 events. 24713/95175 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1453. Compared 1277844 event pairs, 16398 based on Foata normal form. 0/78584 useless extension candidates. Maximal degree in co-relation 58311. Up to 24576 conditions per place. [2023-09-01 06:41:02,604 INFO L82 GeneralOperation]: Start removeDead. Operand has 541 places, 605 transitions, 1438 flow [2023-09-01 06:41:04,099 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 541 places, 605 transitions, 1438 flow [2023-09-01 06:41:04,099 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:41:04,099 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 541 places, 605 transitions, 1438 flow [2023-09-01 06:41:04,099 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 541 places, 605 transitions, 1438 flow [2023-09-01 06:41:04,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 541 places, 605 transitions, 1438 flow [2023-09-01 06:41:34,235 INFO L130 PetriNetUnfolder]: 24713/95175 cut-off events. [2023-09-01 06:41:34,236 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 06:41:40,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119866 conditions, 95175 events. 24713/95175 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1453. Compared 1277844 event pairs, 16398 based on Foata normal form. 0/78584 useless extension candidates. Maximal degree in co-relation 58311. Up to 24576 conditions per place. [2023-09-01 06:41:50,207 INFO L119 LiptonReduction]: Number of co-enabled transitions 289296 [2023-09-01 06:41:56,286 INFO L134 LiptonReduction]: Checked pairs total: 766326 [2023-09-01 06:41:56,287 INFO L136 LiptonReduction]: Total number of compositions: 456 [2023-09-01 06:41:56,289 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:41:56,290 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6d9ab65a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:41:56,290 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:41:56,485 INFO L130 PetriNetUnfolder]: 560/2101 cut-off events. [2023-09-01 06:41:56,486 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-09-01 06:41:56,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:41:56,486 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:41:56,486 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:41:56,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:41:56,486 INFO L85 PathProgramCache]: Analyzing trace with hash 211132105, now seen corresponding path program 1 times [2023-09-01 06:41:56,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:41:56,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996627167] [2023-09-01 06:41:56,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:41:56,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:41:56,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:41:56,512 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:41:56,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:41:56,538 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:41:56,539 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:41:56,539 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:41:56,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 06:41:56,539 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:41:56,541 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:41:56,541 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:41:56,541 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 06:41:56,588 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 06:41:56,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 579 places, 648 transitions, 1556 flow [2023-09-01 06:43:05,169 INFO L130 PetriNetUnfolder]: 53396/193555 cut-off events. [2023-09-01 06:43:05,169 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 06:43:20,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246934 conditions, 193555 events. 53396/193555 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2870. Compared 2823004 event pairs, 36879 based on Foata normal form. 0/160563 useless extension candidates. Maximal degree in co-relation 119840. Up to 53248 conditions per place. [2023-09-01 06:43:20,825 INFO L82 GeneralOperation]: Start removeDead. Operand has 579 places, 648 transitions, 1556 flow [2023-09-01 06:43:26,522 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 579 places, 648 transitions, 1556 flow [2023-09-01 06:43:26,523 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:43:26,523 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 579 places, 648 transitions, 1556 flow [2023-09-01 06:43:26,523 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 579 places, 648 transitions, 1556 flow [2023-09-01 06:43:26,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 579 places, 648 transitions, 1556 flow