./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_19-callback_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_19-callback_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a178b12ba1b75e8e390c539a1b1599b5e56cbe73098e0c8e7ca0eeb62a619e80 --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 06:39:53,183 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 06:39:53,185 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 06:39:53,223 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 06:39:53,224 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 06:39:53,227 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 06:39:53,229 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 06:39:53,232 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 06:39:53,235 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 06:39:53,240 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 06:39:53,242 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 06:39:53,245 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 06:39:53,245 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 06:39:53,247 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 06:39:53,249 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 06:39:53,253 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 06:39:53,254 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 06:39:53,255 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 06:39:53,258 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 06:39:53,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 06:39:53,272 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 06:39:53,274 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 06:39:53,275 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 06:39:53,276 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 06:39:53,282 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 06:39:53,283 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 06:39:53,283 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 06:39:53,285 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 06:39:53,285 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 06:39:53,286 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 06:39:53,286 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 06:39:53,288 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 06:39:53,290 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 06:39:53,290 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 06:39:53,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 06:39:53,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 06:39:53,292 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 06:39:53,292 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 06:39:53,292 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 06:39:53,293 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 06:39:53,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 06:39:53,297 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 06:39:53,334 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 06:39:53,335 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 06:39:53,336 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 06:39:53,336 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 06:39:53,337 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 06:39:53,337 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 06:39:53,338 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 06:39:53,338 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 06:39:53,338 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 06:39:53,338 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 06:39:53,339 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 06:39:53,339 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 06:39:53,339 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 06:39:53,340 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 06:39:53,340 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 06:39:53,340 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 06:39:53,340 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 06:39:53,340 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 06:39:53,341 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 06:39:53,341 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 06:39:53,341 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 06:39:53,341 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 06:39:53,341 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 06:39:53,342 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 06:39:53,342 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 06:39:53,342 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 06:39:53,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:39:53,342 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 06:39:53,343 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 06:39:53,343 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 06:39:53,343 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 06:39:53,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 06:39:53,344 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 06:39:53,344 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 06:39:53,344 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 06:39:53,344 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 06:39:53,344 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 06:39:53,345 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a178b12ba1b75e8e390c539a1b1599b5e56cbe73098e0c8e7ca0eeb62a619e80 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 06:39:53,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 06:39:53,692 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 06:39:53,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 06:39:53,697 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 06:39:53,698 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 06:39:53,699 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_19-callback_racing.i [2023-09-01 06:39:54,950 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 06:39:55,221 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 06:39:55,222 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_19-callback_racing.i [2023-09-01 06:39:55,236 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/290c3cc66/b4fbb46d68ff48b0979c001e822776bd/FLAG84eebf645 [2023-09-01 06:39:55,256 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/290c3cc66/b4fbb46d68ff48b0979c001e822776bd [2023-09-01 06:39:55,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 06:39:55,259 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 06:39:55,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 06:39:55,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 06:39:55,263 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 06:39:55,263 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:39:55" (1/1) ... [2023-09-01 06:39:55,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@799dbb84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:39:55, skipping insertion in model container [2023-09-01 06:39:55,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:39:55" (1/1) ... [2023-09-01 06:39:55,270 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 06:39:55,301 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 06:39:55,559 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_19-callback_racing.i[30212,30225] [2023-09-01 06:39:55,592 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:39:55,612 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 06:39:55,664 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_19-callback_racing.i[30212,30225] [2023-09-01 06:39:55,677 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:39:55,717 WARN L667 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 06:39:55,723 INFO L208 MainTranslator]: Completed translation [2023-09-01 06:39:55,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:39:55 WrapperNode [2023-09-01 06:39:55,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 06:39:55,726 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 06:39:55,726 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 06:39:55,726 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 06:39:55,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:39:55" (1/1) ... [2023-09-01 06:39:55,760 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:39:55" (1/1) ... [2023-09-01 06:39:55,791 INFO L138 Inliner]: procedures = 173, calls = 39, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 144 [2023-09-01 06:39:55,791 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 06:39:55,793 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 06:39:55,793 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 06:39:55,793 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 06:39:55,801 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:39:55" (1/1) ... [2023-09-01 06:39:55,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:39:55" (1/1) ... [2023-09-01 06:39:55,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:39:55" (1/1) ... [2023-09-01 06:39:55,818 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:39:55" (1/1) ... [2023-09-01 06:39:55,824 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:39:55" (1/1) ... [2023-09-01 06:39:55,836 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:39:55" (1/1) ... [2023-09-01 06:39:55,839 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:39:55" (1/1) ... [2023-09-01 06:39:55,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:39:55" (1/1) ... [2023-09-01 06:39:55,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 06:39:55,851 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 06:39:55,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 06:39:55,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 06:39:55,857 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:39:55" (1/1) ... [2023-09-01 06:39:55,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:39:55,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:39:55,896 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 06:39:55,907 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 06:39:55,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 06:39:55,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 06:39:55,944 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 06:39:55,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 06:39:55,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 06:39:55,944 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 06:39:55,944 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 06:39:55,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 06:39:55,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 06:39:55,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 06:39:55,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 06:39:55,946 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 06:39:56,137 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 06:39:56,139 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 06:39:56,371 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 06:39:56,378 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 06:39:56,378 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-09-01 06:39:56,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:39:56 BoogieIcfgContainer [2023-09-01 06:39:56,392 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 06:39:56,394 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 06:39:56,394 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 06:39:56,397 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 06:39:56,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 06:39:55" (1/3) ... [2023-09-01 06:39:56,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47c78ef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:39:56, skipping insertion in model container [2023-09-01 06:39:56,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:39:55" (2/3) ... [2023-09-01 06:39:56,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47c78ef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:39:56, skipping insertion in model container [2023-09-01 06:39:56,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:39:56" (3/3) ... [2023-09-01 06:39:56,400 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_19-callback_racing.i [2023-09-01 06:39:56,407 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 06:39:56,416 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 06:39:56,416 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-09-01 06:39:56,416 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 06:39:56,495 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 06:39:56,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 154 transitions, 316 flow [2023-09-01 06:39:56,603 INFO L130 PetriNetUnfolder]: 26/236 cut-off events. [2023-09-01 06:39:56,606 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 06:39:56,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 236 events. 26/236 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 692 event pairs, 0 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 115. Up to 6 conditions per place. [2023-09-01 06:39:56,615 INFO L82 GeneralOperation]: Start removeDead. Operand has 142 places, 154 transitions, 316 flow [2023-09-01 06:39:56,620 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 145 transitions, 295 flow [2023-09-01 06:39:56,623 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:39:56,632 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 134 places, 145 transitions, 295 flow [2023-09-01 06:39:56,634 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 134 places, 145 transitions, 295 flow [2023-09-01 06:39:56,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 145 transitions, 295 flow [2023-09-01 06:39:56,692 INFO L130 PetriNetUnfolder]: 25/227 cut-off events. [2023-09-01 06:39:56,692 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:39:56,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 227 events. 25/227 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 624 event pairs, 0 based on Foata normal form. 0/184 useless extension candidates. Maximal degree in co-relation 115. Up to 6 conditions per place. [2023-09-01 06:39:56,696 INFO L119 LiptonReduction]: Number of co-enabled transitions 3496 [2023-09-01 06:40:00,246 INFO L134 LiptonReduction]: Checked pairs total: 4789 [2023-09-01 06:40:00,246 INFO L136 LiptonReduction]: Total number of compositions: 135 [2023-09-01 06:40:00,259 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:40:00,269 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;@55f44fb5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:40:00,269 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:40:00,310 INFO L130 PetriNetUnfolder]: 3/27 cut-off events. [2023-09-01 06:40:00,315 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:40:00,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:40:00,317 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 06:40:00,318 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:40:00,324 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:40:00,325 INFO L85 PathProgramCache]: Analyzing trace with hash -629199400, now seen corresponding path program 1 times [2023-09-01 06:40:00,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:40:00,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118255694] [2023-09-01 06:40:00,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:40:00,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:40:00,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:40:00,486 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:40:00,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:40:00,557 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:40:00,559 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:40:00,560 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:40:00,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 06:40:00,563 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:40:00,565 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:40:00,566 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:40:00,566 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 06:40:00,586 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 06:40:00,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 175 transitions, 368 flow [2023-09-01 06:40:00,639 INFO L130 PetriNetUnfolder]: 43/375 cut-off events. [2023-09-01 06:40:00,640 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 06:40:00,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 389 conditions, 375 events. 43/375 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1407 event pairs, 0 based on Foata normal form. 0/300 useless extension candidates. Maximal degree in co-relation 238. Up to 9 conditions per place. [2023-09-01 06:40:00,643 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 175 transitions, 368 flow [2023-09-01 06:40:00,645 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 175 transitions, 368 flow [2023-09-01 06:40:00,645 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:40:00,645 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 161 places, 175 transitions, 368 flow [2023-09-01 06:40:00,645 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 161 places, 175 transitions, 368 flow [2023-09-01 06:40:00,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 175 transitions, 368 flow [2023-09-01 06:40:00,695 INFO L130 PetriNetUnfolder]: 43/375 cut-off events. [2023-09-01 06:40:00,696 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 06:40:00,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 389 conditions, 375 events. 43/375 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1407 event pairs, 0 based on Foata normal form. 0/300 useless extension candidates. Maximal degree in co-relation 238. Up to 9 conditions per place. [2023-09-01 06:40:00,703 INFO L119 LiptonReduction]: Number of co-enabled transitions 8436 [2023-09-01 06:40:03,948 INFO L134 LiptonReduction]: Checked pairs total: 13312 [2023-09-01 06:40:03,949 INFO L136 LiptonReduction]: Total number of compositions: 150 [2023-09-01 06:40:03,954 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:40:03,956 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;@55f44fb5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:40:03,956 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:40:03,962 INFO L130 PetriNetUnfolder]: 22/89 cut-off events. [2023-09-01 06:40:03,963 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 06:40:03,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:40:03,963 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 06:40:03,963 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:40:03,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:40:03,964 INFO L85 PathProgramCache]: Analyzing trace with hash 237224479, now seen corresponding path program 1 times [2023-09-01 06:40:03,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:40:03,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215352772] [2023-09-01 06:40:03,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:40:03,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:40:03,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:40:03,990 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:40:04,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:40:04,031 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:40:04,036 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:40:04,036 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:40:04,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 06:40:04,038 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:40:04,038 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:40:04,039 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:40:04,039 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 06:40:04,061 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 06:40:04,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 196 transitions, 422 flow [2023-09-01 06:40:04,119 INFO L130 PetriNetUnfolder]: 65/553 cut-off events. [2023-09-01 06:40:04,119 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 06:40:04,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 581 conditions, 553 events. 65/553 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2297 event pairs, 1 based on Foata normal form. 0/440 useless extension candidates. Maximal degree in co-relation 383. Up to 16 conditions per place. [2023-09-01 06:40:04,124 INFO L82 GeneralOperation]: Start removeDead. Operand has 180 places, 196 transitions, 422 flow [2023-09-01 06:40:04,127 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 180 places, 196 transitions, 422 flow [2023-09-01 06:40:04,127 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:40:04,127 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 180 places, 196 transitions, 422 flow [2023-09-01 06:40:04,128 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 180 places, 196 transitions, 422 flow [2023-09-01 06:40:04,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 196 transitions, 422 flow [2023-09-01 06:40:04,173 INFO L130 PetriNetUnfolder]: 65/553 cut-off events. [2023-09-01 06:40:04,173 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 06:40:04,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 581 conditions, 553 events. 65/553 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2297 event pairs, 1 based on Foata normal form. 0/440 useless extension candidates. Maximal degree in co-relation 383. Up to 16 conditions per place. [2023-09-01 06:40:04,189 INFO L119 LiptonReduction]: Number of co-enabled transitions 13908 [2023-09-01 06:40:07,359 INFO L134 LiptonReduction]: Checked pairs total: 22090 [2023-09-01 06:40:07,359 INFO L136 LiptonReduction]: Total number of compositions: 166 [2023-09-01 06:40:07,361 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:40:07,362 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;@55f44fb5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:40:07,362 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:40:07,379 INFO L130 PetriNetUnfolder]: 32/134 cut-off events. [2023-09-01 06:40:07,379 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 06:40:07,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:40:07,380 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 06:40:07,380 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:40:07,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:40:07,380 INFO L85 PathProgramCache]: Analyzing trace with hash -227497105, now seen corresponding path program 1 times [2023-09-01 06:40:07,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:40:07,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361712945] [2023-09-01 06:40:07,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:40:07,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:40:07,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:40:07,420 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:40:07,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:40:07,461 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:40:07,461 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:40:07,462 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:40:07,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 06:40:07,463 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:40:07,463 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:40:07,463 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:40:07,464 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 06:40:07,489 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 06:40:07,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 217 transitions, 478 flow [2023-09-01 06:40:07,577 INFO L130 PetriNetUnfolder]: 99/811 cut-off events. [2023-09-01 06:40:07,577 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 06:40:07,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 866 conditions, 811 events. 99/811 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3715 event pairs, 6 based on Foata normal form. 0/644 useless extension candidates. Maximal degree in co-relation 573. Up to 32 conditions per place. [2023-09-01 06:40:07,586 INFO L82 GeneralOperation]: Start removeDead. Operand has 199 places, 217 transitions, 478 flow [2023-09-01 06:40:07,591 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 199 places, 217 transitions, 478 flow [2023-09-01 06:40:07,591 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:40:07,591 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 199 places, 217 transitions, 478 flow [2023-09-01 06:40:07,592 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 199 places, 217 transitions, 478 flow [2023-09-01 06:40:07,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 217 transitions, 478 flow [2023-09-01 06:40:07,675 INFO L130 PetriNetUnfolder]: 99/811 cut-off events. [2023-09-01 06:40:07,676 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 06:40:07,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 866 conditions, 811 events. 99/811 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3715 event pairs, 6 based on Foata normal form. 0/644 useless extension candidates. Maximal degree in co-relation 573. Up to 32 conditions per place. [2023-09-01 06:40:07,698 INFO L119 LiptonReduction]: Number of co-enabled transitions 20216 [2023-09-01 06:40:11,030 INFO L134 LiptonReduction]: Checked pairs total: 34396 [2023-09-01 06:40:11,035 INFO L136 LiptonReduction]: Total number of compositions: 181 [2023-09-01 06:40:11,037 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:40:11,038 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;@55f44fb5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:40:11,038 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:40:11,052 INFO L130 PetriNetUnfolder]: 43/185 cut-off events. [2023-09-01 06:40:11,052 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-09-01 06:40:11,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:40:11,053 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 06:40:11,053 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:40:11,053 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:40:11,055 INFO L85 PathProgramCache]: Analyzing trace with hash -35876497, now seen corresponding path program 1 times [2023-09-01 06:40:11,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:40:11,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620364762] [2023-09-01 06:40:11,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:40:11,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:40:11,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:40:11,107 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:40:11,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:40:11,146 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:40:11,149 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:40:11,149 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:40:11,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 06:40:11,150 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:40:11,150 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:40:11,151 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:40:11,151 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 06:40:11,184 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 06:40:11,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 238 transitions, 536 flow [2023-09-01 06:40:11,335 INFO L130 PetriNetUnfolder]: 161/1233 cut-off events. [2023-09-01 06:40:11,335 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 06:40:11,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1344 conditions, 1233 events. 161/1233 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 6331 event pairs, 23 based on Foata normal form. 0/980 useless extension candidates. Maximal degree in co-relation 856. Up to 80 conditions per place. [2023-09-01 06:40:11,346 INFO L82 GeneralOperation]: Start removeDead. Operand has 218 places, 238 transitions, 536 flow [2023-09-01 06:40:11,354 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 218 places, 238 transitions, 536 flow [2023-09-01 06:40:11,354 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:40:11,355 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 218 places, 238 transitions, 536 flow [2023-09-01 06:40:11,355 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 218 places, 238 transitions, 536 flow [2023-09-01 06:40:11,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 238 transitions, 536 flow [2023-09-01 06:40:11,525 INFO L130 PetriNetUnfolder]: 161/1233 cut-off events. [2023-09-01 06:40:11,525 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 06:40:11,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1344 conditions, 1233 events. 161/1233 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 6331 event pairs, 23 based on Foata normal form. 0/980 useless extension candidates. Maximal degree in co-relation 856. Up to 80 conditions per place. [2023-09-01 06:40:11,558 INFO L119 LiptonReduction]: Number of co-enabled transitions 27360 [2023-09-01 06:40:14,967 INFO L134 LiptonReduction]: Checked pairs total: 45847 [2023-09-01 06:40:14,967 INFO L136 LiptonReduction]: Total number of compositions: 197 [2023-09-01 06:40:14,968 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:40:14,969 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;@55f44fb5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:40:14,969 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:40:14,987 INFO L130 PetriNetUnfolder]: 60/254 cut-off events. [2023-09-01 06:40:14,988 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-09-01 06:40:14,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:40:14,988 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:40:14,988 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:40:14,989 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:40:14,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1535008309, now seen corresponding path program 1 times [2023-09-01 06:40:14,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:40:14,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384624290] [2023-09-01 06:40:14,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:40:14,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:40:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:40:15,011 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:40:15,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:40:15,041 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:40:15,044 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:40:15,044 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:40:15,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 06:40:15,047 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:40:15,047 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:40:15,048 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:40:15,049 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 06:40:15,070 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 06:40:15,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 237 places, 259 transitions, 596 flow [2023-09-01 06:40:15,401 INFO L130 PetriNetUnfolder]: 287/1991 cut-off events. [2023-09-01 06:40:15,402 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 06:40:15,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2223 conditions, 1991 events. 287/1991 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 11921 event pairs, 72 based on Foata normal form. 0/1588 useless extension candidates. Maximal degree in co-relation 1332. Up to 192 conditions per place. [2023-09-01 06:40:15,418 INFO L82 GeneralOperation]: Start removeDead. Operand has 237 places, 259 transitions, 596 flow [2023-09-01 06:40:15,434 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 237 places, 259 transitions, 596 flow [2023-09-01 06:40:15,434 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:40:15,434 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 237 places, 259 transitions, 596 flow [2023-09-01 06:40:15,435 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 237 places, 259 transitions, 596 flow [2023-09-01 06:40:15,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 237 places, 259 transitions, 596 flow [2023-09-01 06:40:15,707 INFO L130 PetriNetUnfolder]: 287/1991 cut-off events. [2023-09-01 06:40:15,707 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 06:40:15,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2223 conditions, 1991 events. 287/1991 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 11921 event pairs, 72 based on Foata normal form. 0/1588 useless extension candidates. Maximal degree in co-relation 1332. Up to 192 conditions per place. [2023-09-01 06:40:15,768 INFO L119 LiptonReduction]: Number of co-enabled transitions 35340 [2023-09-01 06:40:19,328 INFO L134 LiptonReduction]: Checked pairs total: 61220 [2023-09-01 06:40:19,328 INFO L136 LiptonReduction]: Total number of compositions: 212 [2023-09-01 06:40:19,330 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:40:19,330 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;@55f44fb5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:40:19,331 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:40:19,351 INFO L130 PetriNetUnfolder]: 76/330 cut-off events. [2023-09-01 06:40:19,352 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-09-01 06:40:19,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:40:19,352 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:40:19,352 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:40:19,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:40:19,353 INFO L85 PathProgramCache]: Analyzing trace with hash 88514098, now seen corresponding path program 1 times [2023-09-01 06:40:19,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:40:19,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055387337] [2023-09-01 06:40:19,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:40:19,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:40:19,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:40:19,379 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:40:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:40:19,401 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:40:19,401 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:40:19,401 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:40:19,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 06:40:19,402 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:40:19,402 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:40:19,403 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:40:19,403 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 06:40:19,432 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 06:40:19,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 256 places, 280 transitions, 658 flow [2023-09-01 06:40:19,988 INFO L130 PetriNetUnfolder]: 557/3437 cut-off events. [2023-09-01 06:40:19,988 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 06:40:20,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3935 conditions, 3437 events. 557/3437 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 24265 event pairs, 201 based on Foata normal form. 0/2756 useless extension candidates. Maximal degree in co-relation 2209. Up to 448 conditions per place. [2023-09-01 06:40:20,039 INFO L82 GeneralOperation]: Start removeDead. Operand has 256 places, 280 transitions, 658 flow [2023-09-01 06:40:20,057 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 256 places, 280 transitions, 658 flow [2023-09-01 06:40:20,058 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:40:20,058 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 256 places, 280 transitions, 658 flow [2023-09-01 06:40:20,058 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 256 places, 280 transitions, 658 flow [2023-09-01 06:40:20,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 256 places, 280 transitions, 658 flow [2023-09-01 06:40:20,571 INFO L130 PetriNetUnfolder]: 557/3437 cut-off events. [2023-09-01 06:40:20,572 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 06:40:20,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3935 conditions, 3437 events. 557/3437 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 24265 event pairs, 201 based on Foata normal form. 0/2756 useless extension candidates. Maximal degree in co-relation 2209. Up to 448 conditions per place. [2023-09-01 06:40:20,746 INFO L119 LiptonReduction]: Number of co-enabled transitions 44156 [2023-09-01 06:40:24,573 INFO L134 LiptonReduction]: Checked pairs total: 87859 [2023-09-01 06:40:24,577 INFO L136 LiptonReduction]: Total number of compositions: 226 [2023-09-01 06:40:24,579 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:40:24,581 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;@55f44fb5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:40:24,582 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:40:24,620 INFO L130 PetriNetUnfolder]: 102/441 cut-off events. [2023-09-01 06:40:24,620 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-09-01 06:40:24,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:40:24,620 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:40:24,621 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:40:24,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:40:24,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1818523990, now seen corresponding path program 1 times [2023-09-01 06:40:24,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:40:24,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565245905] [2023-09-01 06:40:24,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:40:24,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:40:24,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:40:24,648 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:40:24,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:40:24,691 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:40:24,692 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:40:24,692 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:40:24,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 06:40:24,693 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:40:24,693 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:40:24,693 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:40:24,694 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 06:40:24,718 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 06:40:24,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 275 places, 301 transitions, 722 flow [2023-09-01 06:40:25,888 INFO L130 PetriNetUnfolder]: 1147/6291 cut-off events. [2023-09-01 06:40:25,888 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 06:40:25,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7376 conditions, 6291 events. 1147/6291 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 52691 event pairs, 522 based on Foata normal form. 0/5076 useless extension candidates. Maximal degree in co-relation 3919. Up to 1024 conditions per place. [2023-09-01 06:40:25,965 INFO L82 GeneralOperation]: Start removeDead. Operand has 275 places, 301 transitions, 722 flow [2023-09-01 06:40:26,010 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 275 places, 301 transitions, 722 flow [2023-09-01 06:40:26,011 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:40:26,011 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 275 places, 301 transitions, 722 flow [2023-09-01 06:40:26,012 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 275 places, 301 transitions, 722 flow [2023-09-01 06:40:26,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 275 places, 301 transitions, 722 flow [2023-09-01 06:40:27,025 INFO L130 PetriNetUnfolder]: 1147/6291 cut-off events. [2023-09-01 06:40:27,026 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 06:40:27,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7376 conditions, 6291 events. 1147/6291 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 52691 event pairs, 522 based on Foata normal form. 0/5076 useless extension candidates. Maximal degree in co-relation 3919. Up to 1024 conditions per place. [2023-09-01 06:40:27,297 INFO L119 LiptonReduction]: Number of co-enabled transitions 53808 [2023-09-01 06:40:31,222 INFO L134 LiptonReduction]: Checked pairs total: 103285 [2023-09-01 06:40:31,222 INFO L136 LiptonReduction]: Total number of compositions: 244 [2023-09-01 06:40:31,224 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:40:31,226 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;@55f44fb5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:40:31,226 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:40:31,270 INFO L130 PetriNetUnfolder]: 134/580 cut-off events. [2023-09-01 06:40:31,270 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-09-01 06:40:31,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:40:31,271 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:40:31,271 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:40:31,271 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:40:31,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1252738112, now seen corresponding path program 1 times [2023-09-01 06:40:31,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:40:31,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818653862] [2023-09-01 06:40:31,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:40:31,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:40:31,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:40:31,294 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:40:31,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:40:31,314 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:40:31,315 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:40:31,315 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:40:31,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 06:40:31,315 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:40:31,316 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:40:31,316 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:40:31,316 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 06:40:31,344 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 06:40:31,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 294 places, 322 transitions, 788 flow [2023-09-01 06:40:33,574 INFO L130 PetriNetUnfolder]: 2441/12025 cut-off events. [2023-09-01 06:40:33,574 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 06:40:33,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14402 conditions, 12025 events. 2441/12025 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 116308 event pairs, 1291 based on Foata normal form. 0/9764 useless extension candidates. Maximal degree in co-relation 7358. Up to 2304 conditions per place. [2023-09-01 06:40:33,685 INFO L82 GeneralOperation]: Start removeDead. Operand has 294 places, 322 transitions, 788 flow [2023-09-01 06:40:33,754 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 294 places, 322 transitions, 788 flow [2023-09-01 06:40:33,754 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:40:33,754 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 294 places, 322 transitions, 788 flow [2023-09-01 06:40:33,754 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 294 places, 322 transitions, 788 flow [2023-09-01 06:40:33,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 294 places, 322 transitions, 788 flow [2023-09-01 06:40:35,756 INFO L130 PetriNetUnfolder]: 2441/12025 cut-off events. [2023-09-01 06:40:35,756 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 06:40:35,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14402 conditions, 12025 events. 2441/12025 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 116308 event pairs, 1291 based on Foata normal form. 0/9764 useless extension candidates. Maximal degree in co-relation 7358. Up to 2304 conditions per place. [2023-09-01 06:40:36,128 INFO L119 LiptonReduction]: Number of co-enabled transitions 64296 [2023-09-01 06:40:39,923 INFO L134 LiptonReduction]: Checked pairs total: 117802 [2023-09-01 06:40:39,924 INFO L136 LiptonReduction]: Total number of compositions: 262 [2023-09-01 06:40:39,925 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:40:39,925 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;@55f44fb5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:40:39,926 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:40:39,970 INFO L130 PetriNetUnfolder]: 179/772 cut-off events. [2023-09-01 06:40:39,970 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-09-01 06:40:39,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:40:39,971 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:40:39,971 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:40:39,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:40:39,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1581018367, now seen corresponding path program 1 times [2023-09-01 06:40:39,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:40:39,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128633524] [2023-09-01 06:40:39,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:40:39,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:40:40,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:40:40,005 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:40:40,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:40:40,029 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:40:40,030 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:40:40,030 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:40:40,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 06:40:40,030 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:40:40,033 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:40:40,034 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:40:40,034 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 06:40:40,060 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 06:40:40,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 313 places, 343 transitions, 856 flow [2023-09-01 06:40:44,204 INFO L130 PetriNetUnfolder]: 5271/23647 cut-off events. [2023-09-01 06:40:44,204 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 06:40:44,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28853 conditions, 23647 events. 5271/23647 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 261976 event pairs, 3084 based on Foata normal form. 0/19316 useless extension candidates. Maximal degree in co-relation 14382. Up to 5120 conditions per place. [2023-09-01 06:40:44,546 INFO L82 GeneralOperation]: Start removeDead. Operand has 313 places, 343 transitions, 856 flow [2023-09-01 06:40:44,829 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 313 places, 343 transitions, 856 flow [2023-09-01 06:40:44,829 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:40:44,829 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 313 places, 343 transitions, 856 flow [2023-09-01 06:40:44,830 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 313 places, 343 transitions, 856 flow [2023-09-01 06:40:44,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 313 places, 343 transitions, 856 flow [2023-09-01 06:40:48,753 INFO L130 PetriNetUnfolder]: 5271/23647 cut-off events. [2023-09-01 06:40:48,753 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 06:40:49,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28853 conditions, 23647 events. 5271/23647 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 261976 event pairs, 3084 based on Foata normal form. 0/19316 useless extension candidates. Maximal degree in co-relation 14382. Up to 5120 conditions per place. [2023-09-01 06:40:49,780 INFO L119 LiptonReduction]: Number of co-enabled transitions 75620 [2023-09-01 06:40:53,756 INFO L134 LiptonReduction]: Checked pairs total: 138825 [2023-09-01 06:40:53,756 INFO L136 LiptonReduction]: Total number of compositions: 280 [2023-09-01 06:40:53,758 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:40:53,758 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;@55f44fb5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:40:53,759 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:40:53,845 INFO L130 PetriNetUnfolder]: 254/1059 cut-off events. [2023-09-01 06:40:53,845 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-09-01 06:40:53,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:40:53,845 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:40:53,845 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:40:53,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:40:53,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1251390443, now seen corresponding path program 1 times [2023-09-01 06:40:53,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:40:53,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114985147] [2023-09-01 06:40:53,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:40:53,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:40:53,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:40:53,867 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:40:53,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:40:53,888 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:40:53,889 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:40:53,889 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:40:53,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 06:40:53,889 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:40:53,890 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:40:53,890 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:40:53,890 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 06:40:53,920 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 06:40:53,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 332 places, 364 transitions, 926 flow [2023-09-01 06:41:02,671 INFO L130 PetriNetUnfolder]: 11429/47301 cut-off events. [2023-09-01 06:41:02,672 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 06:41:03,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58665 conditions, 47301 events. 11429/47301 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 779. Compared 579162 event pairs, 7181 based on Foata normal form. 0/38852 useless extension candidates. Maximal degree in co-relation 28831. Up to 11264 conditions per place. [2023-09-01 06:41:03,533 INFO L82 GeneralOperation]: Start removeDead. Operand has 332 places, 364 transitions, 926 flow [2023-09-01 06:41:04,139 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 332 places, 364 transitions, 926 flow [2023-09-01 06:41:04,139 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:41:04,140 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 332 places, 364 transitions, 926 flow [2023-09-01 06:41:04,140 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 332 places, 364 transitions, 926 flow [2023-09-01 06:41:04,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 332 places, 364 transitions, 926 flow [2023-09-01 06:41:13,050 INFO L130 PetriNetUnfolder]: 11429/47301 cut-off events. [2023-09-01 06:41:13,050 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 06:41:13,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58665 conditions, 47301 events. 11429/47301 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 779. Compared 579162 event pairs, 7181 based on Foata normal form. 0/38852 useless extension candidates. Maximal degree in co-relation 28831. Up to 11264 conditions per place. [2023-09-01 06:41:15,417 INFO L119 LiptonReduction]: Number of co-enabled transitions 87780 [2023-09-01 06:41:19,459 INFO L134 LiptonReduction]: Checked pairs total: 168331 [2023-09-01 06:41:19,459 INFO L136 LiptonReduction]: Total number of compositions: 290 [2023-09-01 06:41:19,460 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:41:19,461 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;@55f44fb5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:41:19,461 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:41:19,548 INFO L130 PetriNetUnfolder]: 384/1504 cut-off events. [2023-09-01 06:41:19,548 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-09-01 06:41:19,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:41:19,549 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:41:19,549 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:41:19,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:41:19,550 INFO L85 PathProgramCache]: Analyzing trace with hash 28416968, now seen corresponding path program 1 times [2023-09-01 06:41:19,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:41:19,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579420162] [2023-09-01 06:41:19,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:41:19,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:41:19,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:41:19,587 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:41:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:41:19,611 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:41:19,611 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:41:19,611 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:41:19,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 06:41:19,611 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:41:19,612 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:41:19,612 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:41:19,612 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 06:41:19,640 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 06:41:19,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 351 places, 385 transitions, 998 flow [2023-09-01 06:41:39,197 INFO L130 PetriNetUnfolder]: 24755/95531 cut-off events. [2023-09-01 06:41:39,197 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 06:41:42,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120222 conditions, 95531 events. 24755/95531 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1476. Compared 1280736 event pairs, 16398 based on Foata normal form. 0/78868 useless extension candidates. Maximal degree in co-relation 58641. Up to 24576 conditions per place. [2023-09-01 06:41:42,842 INFO L82 GeneralOperation]: Start removeDead. Operand has 351 places, 385 transitions, 998 flow [2023-09-01 06:41:44,150 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 351 places, 385 transitions, 998 flow [2023-09-01 06:41:44,150 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:41:44,150 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 351 places, 385 transitions, 998 flow [2023-09-01 06:41:44,150 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 351 places, 385 transitions, 998 flow [2023-09-01 06:41:44,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 351 places, 385 transitions, 998 flow [2023-09-01 06:42:03,594 INFO L130 PetriNetUnfolder]: 24755/95531 cut-off events. [2023-09-01 06:42:03,594 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 06:42:07,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120222 conditions, 95531 events. 24755/95531 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1476. Compared 1280736 event pairs, 16398 based on Foata normal form. 0/78868 useless extension candidates. Maximal degree in co-relation 58641. Up to 24576 conditions per place. [2023-09-01 06:42:12,693 INFO L119 LiptonReduction]: Number of co-enabled transitions 100776 [2023-09-01 06:42:16,834 INFO L134 LiptonReduction]: Checked pairs total: 183935 [2023-09-01 06:42:16,834 INFO L136 LiptonReduction]: Total number of compositions: 312 [2023-09-01 06:42:16,836 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:42:16,836 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@55f44fb5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:42:16,836 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:42:16,971 INFO L130 PetriNetUnfolder]: 596/2176 cut-off events. [2023-09-01 06:42:16,972 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-09-01 06:42:16,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:42:16,972 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 06:42:16,972 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:42:16,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:42:16,973 INFO L85 PathProgramCache]: Analyzing trace with hash -462789003, now seen corresponding path program 1 times [2023-09-01 06:42:16,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:42:16,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542637213] [2023-09-01 06:42:16,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:42:16,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:42:17,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:42:17,014 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:42:17,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:42:17,047 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:42:17,047 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:42:17,047 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:42:17,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 06:42:17,048 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:42:17,049 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:42:17,049 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:42:17,050 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 06:42:17,083 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 06:42:17,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 370 places, 406 transitions, 1072 flow [2023-09-01 06:43:00,387 INFO L130 PetriNetUnfolder]: 53441/193937 cut-off events. [2023-09-01 06:43:00,387 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 06:43:08,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247316 conditions, 193937 events. 53441/193937 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2895. Compared 2844102 event pairs, 36879 based on Foata normal form. 0/160868 useless extension candidates. Maximal degree in co-relation 120198. Up to 53248 conditions per place. [2023-09-01 06:43:08,364 INFO L82 GeneralOperation]: Start removeDead. Operand has 370 places, 406 transitions, 1072 flow [2023-09-01 06:43:11,095 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 370 places, 406 transitions, 1072 flow [2023-09-01 06:43:11,095 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:43:11,095 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 370 places, 406 transitions, 1072 flow [2023-09-01 06:43:11,096 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 370 places, 406 transitions, 1072 flow [2023-09-01 06:43:11,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 370 places, 406 transitions, 1072 flow [2023-09-01 06:43:58,933 INFO L130 PetriNetUnfolder]: 53441/193937 cut-off events. [2023-09-01 06:43:58,933 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 06:44:07,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247316 conditions, 193937 events. 53441/193937 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2895. Compared 2844102 event pairs, 36879 based on Foata normal form. 0/160868 useless extension candidates. Maximal degree in co-relation 120198. Up to 53248 conditions per place. [2023-09-01 06:44:20,582 INFO L119 LiptonReduction]: Number of co-enabled transitions 114608 [2023-09-01 06:44:24,949 INFO L134 LiptonReduction]: Checked pairs total: 221621 [2023-09-01 06:44:24,949 INFO L136 LiptonReduction]: Total number of compositions: 325 [2023-09-01 06:44:24,950 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:44:24,951 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;@55f44fb5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:44:24,951 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:44:25,212 INFO L130 PetriNetUnfolder]: 955/3233 cut-off events. [2023-09-01 06:44:25,212 INFO L131 PetriNetUnfolder]: For 1672/1672 co-relation queries the response was YES. [2023-09-01 06:44:25,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:44:25,212 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:44:25,212 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:44:25,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:44:25,212 INFO L85 PathProgramCache]: Analyzing trace with hash 362387956, now seen corresponding path program 1 times [2023-09-01 06:44:25,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:44:25,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419542746] [2023-09-01 06:44:25,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:44:25,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:44:25,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:44:25,239 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:44:25,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:44:25,262 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:44:25,263 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:44:25,263 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:44:25,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 06:44:25,263 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:44:25,264 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:44:25,264 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:44:25,264 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-09-01 06:44:25,294 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-09-01 06:44:25,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 389 places, 427 transitions, 1148 flow