./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_36-indirect_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_36-indirect_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3eff698bae51c39e8a3a4c763800dbda831dabb73a169fa31c8e326faee47cd8 --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 06:45:12,070 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 06:45:12,072 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 06:45:12,116 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 06:45:12,117 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 06:45:12,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 06:45:12,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 06:45:12,125 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 06:45:12,127 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 06:45:12,132 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 06:45:12,133 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 06:45:12,135 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 06:45:12,136 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 06:45:12,138 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 06:45:12,139 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 06:45:12,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 06:45:12,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 06:45:12,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 06:45:12,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 06:45:12,153 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 06:45:12,162 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 06:45:12,164 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 06:45:12,165 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 06:45:12,167 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 06:45:12,173 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 06:45:12,174 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 06:45:12,174 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 06:45:12,176 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 06:45:12,176 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 06:45:12,177 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 06:45:12,177 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 06:45:12,179 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 06:45:12,180 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 06:45:12,181 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 06:45:12,182 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 06:45:12,182 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 06:45:12,182 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 06:45:12,183 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 06:45:12,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 06:45:12,183 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 06:45:12,184 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 06:45:12,186 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 06:45:12,218 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 06:45:12,219 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 06:45:12,220 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 06:45:12,220 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 06:45:12,221 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 06:45:12,221 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 06:45:12,222 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 06:45:12,222 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 06:45:12,222 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 06:45:12,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 06:45:12,223 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 06:45:12,223 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 06:45:12,223 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 06:45:12,224 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 06:45:12,224 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 06:45:12,224 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 06:45:12,224 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 06:45:12,224 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 06:45:12,225 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 06:45:12,225 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 06:45:12,225 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 06:45:12,225 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 06:45:12,225 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 06:45:12,226 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 06:45:12,226 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 06:45:12,226 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 06:45:12,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:45:12,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 06:45:12,227 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 06:45:12,227 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 06:45:12,227 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 06:45:12,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 06:45:12,228 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 06:45:12,228 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 06:45:12,228 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 06:45:12,228 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 06:45:12,228 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 06:45:12,229 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3eff698bae51c39e8a3a4c763800dbda831dabb73a169fa31c8e326faee47cd8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 06:45:12,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 06:45:12,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 06:45:12,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 06:45:12,539 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 06:45:12,540 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 06:45:12,541 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_36-indirect_racefree.i [2023-09-01 06:45:13,801 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 06:45:14,074 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 06:45:14,074 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_36-indirect_racefree.i [2023-09-01 06:45:14,090 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/058dc2b11/90f34206d821436fb080d13b8a55621d/FLAGc6720be87 [2023-09-01 06:45:14,101 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/058dc2b11/90f34206d821436fb080d13b8a55621d [2023-09-01 06:45:14,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 06:45:14,105 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 06:45:14,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 06:45:14,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 06:45:14,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 06:45:14,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:45:14" (1/1) ... [2023-09-01 06:45:14,110 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74bee111 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:45:14, skipping insertion in model container [2023-09-01 06:45:14,110 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:45:14" (1/1) ... [2023-09-01 06:45:14,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 06:45:14,149 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 06:45:14,406 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_36-indirect_racefree.i[30176,30189] [2023-09-01 06:45:14,430 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:45:14,443 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 06:45:14,486 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_36-indirect_racefree.i[30176,30189] [2023-09-01 06:45:14,500 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:45:14,553 INFO L208 MainTranslator]: Completed translation [2023-09-01 06:45:14,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:45:14 WrapperNode [2023-09-01 06:45:14,554 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 06:45:14,555 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 06:45:14,556 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 06:45:14,556 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 06:45:14,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:45:14" (1/1) ... [2023-09-01 06:45:14,594 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:45:14" (1/1) ... [2023-09-01 06:45:14,612 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 84 [2023-09-01 06:45:14,613 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 06:45:14,613 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 06:45:14,614 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 06:45:14,614 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 06:45:14,621 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:45:14" (1/1) ... [2023-09-01 06:45:14,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:45:14" (1/1) ... [2023-09-01 06:45:14,624 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:45:14" (1/1) ... [2023-09-01 06:45:14,624 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:45:14" (1/1) ... [2023-09-01 06:45:14,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:45:14" (1/1) ... [2023-09-01 06:45:14,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:45:14" (1/1) ... [2023-09-01 06:45:14,633 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:45:14" (1/1) ... [2023-09-01 06:45:14,634 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:45:14" (1/1) ... [2023-09-01 06:45:14,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 06:45:14,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 06:45:14,637 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 06:45:14,637 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 06:45:14,638 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:45:14" (1/1) ... [2023-09-01 06:45:14,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:45:14,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:45:14,666 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 06:45:14,672 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 06:45:14,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 06:45:14,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 06:45:14,694 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 06:45:14,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 06:45:14,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 06:45:14,695 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 06:45:14,695 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 06:45:14,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 06:45:14,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 06:45:14,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 06:45:14,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 06:45:14,697 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 06:45:14,834 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 06:45:14,836 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 06:45:15,060 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 06:45:15,081 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 06:45:15,081 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-09-01 06:45:15,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:45:15 BoogieIcfgContainer [2023-09-01 06:45:15,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 06:45:15,085 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 06:45:15,085 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 06:45:15,087 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 06:45:15,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 06:45:14" (1/3) ... [2023-09-01 06:45:15,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c34d5d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:45:15, skipping insertion in model container [2023-09-01 06:45:15,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:45:14" (2/3) ... [2023-09-01 06:45:15,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c34d5d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:45:15, skipping insertion in model container [2023-09-01 06:45:15,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:45:15" (3/3) ... [2023-09-01 06:45:15,090 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_36-indirect_racefree.i [2023-09-01 06:45:15,098 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 06:45:15,106 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 06:45:15,106 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-09-01 06:45:15,107 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 06:45:15,215 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 06:45:15,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 126 transitions, 260 flow [2023-09-01 06:45:15,346 INFO L130 PetriNetUnfolder]: 17/160 cut-off events. [2023-09-01 06:45:15,346 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 06:45:15,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 160 events. 17/160 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 379 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 83. Up to 4 conditions per place. [2023-09-01 06:45:15,352 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 126 transitions, 260 flow [2023-09-01 06:45:15,358 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 117 transitions, 239 flow [2023-09-01 06:45:15,368 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:45:15,384 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 109 places, 117 transitions, 239 flow [2023-09-01 06:45:15,387 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 109 places, 117 transitions, 239 flow [2023-09-01 06:45:15,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 117 transitions, 239 flow [2023-09-01 06:45:15,422 INFO L130 PetriNetUnfolder]: 16/151 cut-off events. [2023-09-01 06:45:15,424 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:45:15,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 151 events. 16/151 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 364 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 83. Up to 4 conditions per place. [2023-09-01 06:45:15,430 INFO L119 LiptonReduction]: Number of co-enabled transitions 3520 [2023-09-01 06:45:18,399 INFO L134 LiptonReduction]: Checked pairs total: 6258 [2023-09-01 06:45:18,399 INFO L136 LiptonReduction]: Total number of compositions: 104 [2023-09-01 06:45:18,412 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:45:18,418 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;@2cfc7e2f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:45:18,418 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:45:18,422 INFO L130 PetriNetUnfolder]: 2/22 cut-off events. [2023-09-01 06:45:18,423 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:45:18,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:45:18,423 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 06:45:18,424 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:45:18,428 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:45:18,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1288933305, now seen corresponding path program 1 times [2023-09-01 06:45:18,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:45:18,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145622503] [2023-09-01 06:45:18,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:45:18,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:45:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:45:18,542 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:45:18,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:45:18,580 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:45:18,583 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:45:18,584 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:45:18,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 06:45:18,586 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:45:18,588 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:45:18,589 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:45:18,589 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 06:45:18,610 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 06:45:18,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 168 transitions, 354 flow [2023-09-01 06:45:18,653 INFO L130 PetriNetUnfolder]: 31/272 cut-off events. [2023-09-01 06:45:18,656 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 06:45:18,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 272 events. 31/272 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 832 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 162. Up to 8 conditions per place. [2023-09-01 06:45:18,661 INFO L82 GeneralOperation]: Start removeDead. Operand has 154 places, 168 transitions, 354 flow [2023-09-01 06:45:18,663 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 154 places, 168 transitions, 354 flow [2023-09-01 06:45:18,664 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:45:18,664 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 154 places, 168 transitions, 354 flow [2023-09-01 06:45:18,664 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 154 places, 168 transitions, 354 flow [2023-09-01 06:45:18,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 168 transitions, 354 flow [2023-09-01 06:45:18,706 INFO L130 PetriNetUnfolder]: 31/272 cut-off events. [2023-09-01 06:45:18,707 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 06:45:18,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 272 events. 31/272 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 832 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 162. Up to 8 conditions per place. [2023-09-01 06:45:18,719 INFO L119 LiptonReduction]: Number of co-enabled transitions 11760 [2023-09-01 06:45:21,857 INFO L134 LiptonReduction]: Checked pairs total: 24420 [2023-09-01 06:45:21,857 INFO L136 LiptonReduction]: Total number of compositions: 139 [2023-09-01 06:45:21,860 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:45:21,861 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;@2cfc7e2f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:45:21,861 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:45:21,869 INFO L130 PetriNetUnfolder]: 10/62 cut-off events. [2023-09-01 06:45:21,870 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 06:45:21,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:45:21,870 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 06:45:21,872 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:45:21,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:45:21,873 INFO L85 PathProgramCache]: Analyzing trace with hash 391498918, now seen corresponding path program 1 times [2023-09-01 06:45:21,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:45:21,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502560784] [2023-09-01 06:45:21,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:45:21,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:45:21,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:45:21,930 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:45:21,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:45:21,972 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:45:21,978 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:45:21,978 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:45:21,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 06:45:21,979 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:45:21,980 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:45:21,981 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:45:21,981 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 06:45:22,009 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 06:45:22,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 191 places, 210 transitions, 450 flow [2023-09-01 06:45:22,061 INFO L130 PetriNetUnfolder]: 50/423 cut-off events. [2023-09-01 06:45:22,062 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 06:45:22,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451 conditions, 423 events. 50/423 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1433 event pairs, 1 based on Foata normal form. 0/337 useless extension candidates. Maximal degree in co-relation 280. Up to 16 conditions per place. [2023-09-01 06:45:22,070 INFO L82 GeneralOperation]: Start removeDead. Operand has 191 places, 210 transitions, 450 flow [2023-09-01 06:45:22,073 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 191 places, 210 transitions, 450 flow [2023-09-01 06:45:22,073 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:45:22,073 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 191 places, 210 transitions, 450 flow [2023-09-01 06:45:22,073 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 191 places, 210 transitions, 450 flow [2023-09-01 06:45:22,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 191 places, 210 transitions, 450 flow [2023-09-01 06:45:22,130 INFO L130 PetriNetUnfolder]: 50/423 cut-off events. [2023-09-01 06:45:22,131 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 06:45:22,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451 conditions, 423 events. 50/423 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1433 event pairs, 1 based on Foata normal form. 0/337 useless extension candidates. Maximal degree in co-relation 280. Up to 16 conditions per place. [2023-09-01 06:45:22,153 INFO L119 LiptonReduction]: Number of co-enabled transitions 22800 [2023-09-01 06:45:25,395 INFO L134 LiptonReduction]: Checked pairs total: 51217 [2023-09-01 06:45:25,395 INFO L136 LiptonReduction]: Total number of compositions: 174 [2023-09-01 06:45:25,397 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:45:25,398 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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;@2cfc7e2f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:45:25,399 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:45:25,406 INFO L130 PetriNetUnfolder]: 19/102 cut-off events. [2023-09-01 06:45:25,406 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 06:45:25,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:45:25,407 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 06:45:25,407 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:45:25,407 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:45:25,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1510564941, now seen corresponding path program 1 times [2023-09-01 06:45:25,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:45:25,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698078240] [2023-09-01 06:45:25,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:45:25,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:45:25,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:45:25,442 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:45:25,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:45:25,466 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:45:25,466 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:45:25,468 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:45:25,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 06:45:25,469 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:45:25,469 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:45:25,470 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:45:25,470 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 06:45:25,495 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 06:45:25,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 252 transitions, 548 flow [2023-09-01 06:45:25,589 INFO L130 PetriNetUnfolder]: 81/654 cut-off events. [2023-09-01 06:45:25,589 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 06:45:25,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 709 conditions, 654 events. 81/654 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2579 event pairs, 6 based on Foata normal form. 0/519 useless extension candidates. Maximal degree in co-relation 443. Up to 32 conditions per place. [2023-09-01 06:45:25,598 INFO L82 GeneralOperation]: Start removeDead. Operand has 228 places, 252 transitions, 548 flow [2023-09-01 06:45:25,603 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 228 places, 252 transitions, 548 flow [2023-09-01 06:45:25,604 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:45:25,604 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 228 places, 252 transitions, 548 flow [2023-09-01 06:45:25,604 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 228 places, 252 transitions, 548 flow [2023-09-01 06:45:25,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 252 transitions, 548 flow [2023-09-01 06:45:25,703 INFO L130 PetriNetUnfolder]: 81/654 cut-off events. [2023-09-01 06:45:25,703 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 06:45:25,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 709 conditions, 654 events. 81/654 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2579 event pairs, 6 based on Foata normal form. 0/519 useless extension candidates. Maximal degree in co-relation 443. Up to 32 conditions per place. [2023-09-01 06:45:25,729 INFO L119 LiptonReduction]: Number of co-enabled transitions 37280 [2023-09-01 06:45:29,350 INFO L134 LiptonReduction]: Checked pairs total: 102598 [2023-09-01 06:45:29,351 INFO L136 LiptonReduction]: Total number of compositions: 202 [2023-09-01 06:45:29,353 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:45:29,354 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;@2cfc7e2f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:45:29,354 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:45:29,376 INFO L130 PetriNetUnfolder]: 29/152 cut-off events. [2023-09-01 06:45:29,376 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-09-01 06:45:29,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:45:29,377 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 06:45:29,377 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:45:29,377 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:45:29,378 INFO L85 PathProgramCache]: Analyzing trace with hash -713198489, now seen corresponding path program 1 times [2023-09-01 06:45:29,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:45:29,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484331775] [2023-09-01 06:45:29,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:45:29,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:45:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:45:29,402 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:45:29,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:45:29,424 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:45:29,425 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:45:29,425 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:45:29,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 06:45:29,425 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:45:29,426 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:45:29,426 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:45:29,426 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 06:45:29,448 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 06:45:29,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 265 places, 294 transitions, 648 flow [2023-09-01 06:45:29,626 INFO L130 PetriNetUnfolder]: 140/1049 cut-off events. [2023-09-01 06:45:29,627 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 06:45:29,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1160 conditions, 1049 events. 140/1049 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4858 event pairs, 23 based on Foata normal form. 0/833 useless extension candidates. Maximal degree in co-relation 699. Up to 80 conditions per place. [2023-09-01 06:45:29,643 INFO L82 GeneralOperation]: Start removeDead. Operand has 265 places, 294 transitions, 648 flow [2023-09-01 06:45:29,651 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 265 places, 294 transitions, 648 flow [2023-09-01 06:45:29,651 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:45:29,651 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 265 places, 294 transitions, 648 flow [2023-09-01 06:45:29,651 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 265 places, 294 transitions, 648 flow [2023-09-01 06:45:29,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 265 places, 294 transitions, 648 flow [2023-09-01 06:45:29,831 INFO L130 PetriNetUnfolder]: 140/1049 cut-off events. [2023-09-01 06:45:29,831 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 06:45:29,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1160 conditions, 1049 events. 140/1049 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4858 event pairs, 23 based on Foata normal form. 0/833 useless extension candidates. Maximal degree in co-relation 699. Up to 80 conditions per place. [2023-09-01 06:45:29,879 INFO L119 LiptonReduction]: Number of co-enabled transitions 55200 [2023-09-01 06:45:33,493 INFO L134 LiptonReduction]: Checked pairs total: 160190 [2023-09-01 06:45:33,493 INFO L136 LiptonReduction]: Total number of compositions: 233 [2023-09-01 06:45:33,500 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:45:33,502 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2cfc7e2f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:45:33,503 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:45:33,519 INFO L130 PetriNetUnfolder]: 41/211 cut-off events. [2023-09-01 06:45:33,520 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-09-01 06:45:33,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:45:33,520 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:45:33,520 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:45:33,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:45:33,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1231697382, now seen corresponding path program 1 times [2023-09-01 06:45:33,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:45:33,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938964116] [2023-09-01 06:45:33,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:45:33,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:45:33,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:45:33,566 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:45:33,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:45:33,610 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:45:33,614 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:45:33,615 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:45:33,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 06:45:33,615 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:45:33,618 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:45:33,618 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:45:33,618 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 06:45:33,641 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 06:45:33,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 302 places, 336 transitions, 750 flow [2023-09-01 06:45:33,981 INFO L130 PetriNetUnfolder]: 263/1780 cut-off events. [2023-09-01 06:45:33,981 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 06:45:34,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2012 conditions, 1780 events. 263/1780 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 10201 event pairs, 72 based on Foata normal form. 0/1419 useless extension candidates. Maximal degree in co-relation 1148. Up to 192 conditions per place. [2023-09-01 06:45:34,006 INFO L82 GeneralOperation]: Start removeDead. Operand has 302 places, 336 transitions, 750 flow [2023-09-01 06:45:34,018 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 302 places, 336 transitions, 750 flow [2023-09-01 06:45:34,018 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:45:34,019 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 302 places, 336 transitions, 750 flow [2023-09-01 06:45:34,019 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 302 places, 336 transitions, 750 flow [2023-09-01 06:45:34,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 302 places, 336 transitions, 750 flow [2023-09-01 06:45:34,345 INFO L130 PetriNetUnfolder]: 263/1780 cut-off events. [2023-09-01 06:45:34,346 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 06:45:34,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2012 conditions, 1780 events. 263/1780 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 10201 event pairs, 72 based on Foata normal form. 0/1419 useless extension candidates. Maximal degree in co-relation 1148. Up to 192 conditions per place. [2023-09-01 06:45:34,453 INFO L119 LiptonReduction]: Number of co-enabled transitions 76560 [2023-09-01 06:45:38,366 INFO L134 LiptonReduction]: Checked pairs total: 200867 [2023-09-01 06:45:38,367 INFO L136 LiptonReduction]: Total number of compositions: 266 [2023-09-01 06:45:38,370 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:45:38,371 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;@2cfc7e2f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:45:38,371 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:45:38,419 INFO L130 PetriNetUnfolder]: 56/287 cut-off events. [2023-09-01 06:45:38,420 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-09-01 06:45:38,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:45:38,420 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:45:38,420 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:45:38,421 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:45:38,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1869155139, now seen corresponding path program 1 times [2023-09-01 06:45:38,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:45:38,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812172743] [2023-09-01 06:45:38,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:45:38,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:45:38,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:45:38,478 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:45:38,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:45:38,513 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:45:38,517 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:45:38,518 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:45:38,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 06:45:38,518 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:45:38,520 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:45:38,521 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:45:38,521 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 06:45:38,554 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 06:45:38,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 339 places, 378 transitions, 854 flow [2023-09-01 06:45:39,234 INFO L130 PetriNetUnfolder]: 530/3199 cut-off events. [2023-09-01 06:45:39,234 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 06:45:39,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3697 conditions, 3199 events. 530/3199 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 22191 event pairs, 201 based on Foata normal form. 0/2565 useless extension candidates. Maximal degree in co-relation 1998. Up to 448 conditions per place. [2023-09-01 06:45:39,286 INFO L82 GeneralOperation]: Start removeDead. Operand has 339 places, 378 transitions, 854 flow [2023-09-01 06:45:39,314 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 339 places, 378 transitions, 854 flow [2023-09-01 06:45:39,314 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:45:39,314 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 339 places, 378 transitions, 854 flow [2023-09-01 06:45:39,315 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 339 places, 378 transitions, 854 flow [2023-09-01 06:45:39,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 339 places, 378 transitions, 854 flow [2023-09-01 06:45:40,076 INFO L130 PetriNetUnfolder]: 530/3199 cut-off events. [2023-09-01 06:45:40,076 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 06:45:40,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3697 conditions, 3199 events. 530/3199 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 22191 event pairs, 201 based on Foata normal form. 0/2565 useless extension candidates. Maximal degree in co-relation 1998. Up to 448 conditions per place. [2023-09-01 06:45:40,360 INFO L119 LiptonReduction]: Number of co-enabled transitions 101360 [2023-09-01 06:45:44,718 INFO L134 LiptonReduction]: Checked pairs total: 267607 [2023-09-01 06:45:44,718 INFO L136 LiptonReduction]: Total number of compositions: 297 [2023-09-01 06:45:44,720 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:45:44,724 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;@2cfc7e2f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:45:44,724 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:45:44,762 INFO L130 PetriNetUnfolder]: 76/385 cut-off events. [2023-09-01 06:45:44,763 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-09-01 06:45:44,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:45:44,763 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:45:44,763 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:45:44,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:45:44,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1873717501, now seen corresponding path program 1 times [2023-09-01 06:45:44,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:45:44,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949901332] [2023-09-01 06:45:44,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:45:44,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:45:44,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:45:44,814 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:45:44,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:45:44,839 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:45:44,840 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:45:44,840 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:45:44,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 06:45:44,840 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:45:44,841 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:45:44,841 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:45:44,841 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 06:45:44,896 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 06:45:44,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 376 places, 420 transitions, 960 flow [2023-09-01 06:45:46,391 INFO L130 PetriNetUnfolder]: 1117/6026 cut-off events. [2023-09-01 06:45:46,391 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 06:45:46,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7111 conditions, 6026 events. 1117/6026 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 49821 event pairs, 522 based on Foata normal form. 0/4863 useless extension candidates. Maximal degree in co-relation 3681. Up to 1024 conditions per place. [2023-09-01 06:45:46,495 INFO L82 GeneralOperation]: Start removeDead. Operand has 376 places, 420 transitions, 960 flow [2023-09-01 06:45:46,541 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 376 places, 420 transitions, 960 flow [2023-09-01 06:45:46,541 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:45:46,541 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 376 places, 420 transitions, 960 flow [2023-09-01 06:45:46,541 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 376 places, 420 transitions, 960 flow [2023-09-01 06:45:46,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 376 places, 420 transitions, 960 flow [2023-09-01 06:45:47,742 INFO L130 PetriNetUnfolder]: 1117/6026 cut-off events. [2023-09-01 06:45:47,742 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 06:45:47,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7111 conditions, 6026 events. 1117/6026 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 49821 event pairs, 522 based on Foata normal form. 0/4863 useless extension candidates. Maximal degree in co-relation 3681. Up to 1024 conditions per place. [2023-09-01 06:45:48,127 INFO L119 LiptonReduction]: Number of co-enabled transitions 129600 [2023-09-01 06:45:52,767 INFO L134 LiptonReduction]: Checked pairs total: 346422 [2023-09-01 06:45:52,767 INFO L136 LiptonReduction]: Total number of compositions: 331 [2023-09-01 06:45:52,768 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:45:52,769 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;@2cfc7e2f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:45:52,769 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:45:52,819 INFO L130 PetriNetUnfolder]: 105/517 cut-off events. [2023-09-01 06:45:52,820 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-09-01 06:45:52,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:45:52,820 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:45:52,820 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:45:52,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:45:52,821 INFO L85 PathProgramCache]: Analyzing trace with hash -595785956, now seen corresponding path program 1 times [2023-09-01 06:45:52,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:45:52,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106375210] [2023-09-01 06:45:52,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:45:52,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:45:52,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:45:52,840 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:45:52,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:45:52,859 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:45:52,859 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:45:52,859 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:45:52,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 06:45:52,859 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:45:52,860 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:45:52,860 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:45:52,860 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 06:45:52,889 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 06:45:52,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 413 places, 462 transitions, 1068 flow [2023-09-01 06:45:55,651 INFO L130 PetriNetUnfolder]: 2408/11733 cut-off events. [2023-09-01 06:45:55,651 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 06:45:55,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14110 conditions, 11733 events. 2408/11733 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 113077 event pairs, 1291 based on Foata normal form. 0/9529 useless extension candidates. Maximal degree in co-relation 7093. Up to 2304 conditions per place. [2023-09-01 06:45:55,853 INFO L82 GeneralOperation]: Start removeDead. Operand has 413 places, 462 transitions, 1068 flow [2023-09-01 06:45:55,944 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 413 places, 462 transitions, 1068 flow [2023-09-01 06:45:55,945 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:45:55,945 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 413 places, 462 transitions, 1068 flow [2023-09-01 06:45:55,945 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 413 places, 462 transitions, 1068 flow [2023-09-01 06:45:55,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 413 places, 462 transitions, 1068 flow [2023-09-01 06:45:58,554 INFO L130 PetriNetUnfolder]: 2408/11733 cut-off events. [2023-09-01 06:45:58,554 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 06:45:58,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14110 conditions, 11733 events. 2408/11733 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 113077 event pairs, 1291 based on Foata normal form. 0/9529 useless extension candidates. Maximal degree in co-relation 7093. Up to 2304 conditions per place. [2023-09-01 06:45:59,381 INFO L119 LiptonReduction]: Number of co-enabled transitions 161280 [2023-09-01 06:46:04,195 INFO L134 LiptonReduction]: Checked pairs total: 440319 [2023-09-01 06:46:04,195 INFO L136 LiptonReduction]: Total number of compositions: 360 [2023-09-01 06:46:04,197 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:46:04,197 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;@2cfc7e2f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:46:04,198 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:46:04,264 INFO L130 PetriNetUnfolder]: 150/711 cut-off events. [2023-09-01 06:46:04,264 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-09-01 06:46:04,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:46:04,264 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:46:04,264 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:46:04,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:46:04,265 INFO L85 PathProgramCache]: Analyzing trace with hash 75530340, now seen corresponding path program 1 times [2023-09-01 06:46:04,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:46:04,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420760618] [2023-09-01 06:46:04,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:46:04,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:46:04,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:46:04,297 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:46:04,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:46:04,322 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:46:04,322 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:46:04,323 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:46:04,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 06:46:04,323 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:46:04,324 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:46:04,324 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:46:04,324 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 06:46:04,362 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 06:46:04,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 450 places, 504 transitions, 1178 flow [2023-09-01 06:46:10,297 INFO L130 PetriNetUnfolder]: 5235/23328 cut-off events. [2023-09-01 06:46:10,298 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 06:46:10,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28534 conditions, 23328 events. 5235/23328 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 255398 event pairs, 3084 based on Foata normal form. 0/19059 useless extension candidates. Maximal degree in co-relation 14090. Up to 5120 conditions per place. [2023-09-01 06:46:10,815 INFO L82 GeneralOperation]: Start removeDead. Operand has 450 places, 504 transitions, 1178 flow [2023-09-01 06:46:11,191 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 450 places, 504 transitions, 1178 flow [2023-09-01 06:46:11,192 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:46:11,192 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 450 places, 504 transitions, 1178 flow [2023-09-01 06:46:11,192 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 450 places, 504 transitions, 1178 flow [2023-09-01 06:46:11,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 450 places, 504 transitions, 1178 flow [2023-09-01 06:46:17,088 INFO L130 PetriNetUnfolder]: 5235/23328 cut-off events. [2023-09-01 06:46:17,088 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 06:46:17,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28534 conditions, 23328 events. 5235/23328 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 255398 event pairs, 3084 based on Foata normal form. 0/19059 useless extension candidates. Maximal degree in co-relation 14090. Up to 5120 conditions per place. [2023-09-01 06:46:18,892 INFO L119 LiptonReduction]: Number of co-enabled transitions 196400 [2023-09-01 06:46:24,137 INFO L134 LiptonReduction]: Checked pairs total: 545049 [2023-09-01 06:46:24,138 INFO L136 LiptonReduction]: Total number of compositions: 391 [2023-09-01 06:46:24,139 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:46:24,139 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;@2cfc7e2f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:46:24,140 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:46:24,233 INFO L130 PetriNetUnfolder]: 224/994 cut-off events. [2023-09-01 06:46:24,233 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-09-01 06:46:24,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:46:24,233 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:46:24,233 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:46:24,233 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:46:24,233 INFO L85 PathProgramCache]: Analyzing trace with hash 509144791, now seen corresponding path program 1 times [2023-09-01 06:46:24,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:46:24,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874530399] [2023-09-01 06:46:24,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:46:24,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:46:24,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:46:24,258 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:46:24,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:46:24,297 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:46:24,298 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:46:24,298 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:46:24,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 06:46:24,298 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:46:24,299 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:46:24,299 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:46:24,300 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 06:46:24,334 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 06:46:24,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 487 places, 546 transitions, 1290 flow [2023-09-01 06:46:37,459 INFO L130 PetriNetUnfolder]: 11390/46955 cut-off events. [2023-09-01 06:46:37,459 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 06:46:39,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58319 conditions, 46955 events. 11390/46955 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 771. Compared 575772 event pairs, 7181 based on Foata normal form. 0/38573 useless extension candidates. Maximal degree in co-relation 28512. Up to 11264 conditions per place. [2023-09-01 06:46:39,527 INFO L82 GeneralOperation]: Start removeDead. Operand has 487 places, 546 transitions, 1290 flow [2023-09-01 06:46:40,451 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 487 places, 546 transitions, 1290 flow [2023-09-01 06:46:40,451 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:46:40,452 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 487 places, 546 transitions, 1290 flow [2023-09-01 06:46:40,452 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 487 places, 546 transitions, 1290 flow [2023-09-01 06:46:40,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 487 places, 546 transitions, 1290 flow [2023-09-01 06:46:53,573 INFO L130 PetriNetUnfolder]: 11390/46955 cut-off events. [2023-09-01 06:46:53,574 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 06:46:54,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58319 conditions, 46955 events. 11390/46955 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 771. Compared 575772 event pairs, 7181 based on Foata normal form. 0/38573 useless extension candidates. Maximal degree in co-relation 28512. Up to 11264 conditions per place. [2023-09-01 06:46:58,012 INFO L119 LiptonReduction]: Number of co-enabled transitions 234960 [2023-09-01 06:47:03,649 INFO L134 LiptonReduction]: Checked pairs total: 652132 [2023-09-01 06:47:03,649 INFO L136 LiptonReduction]: Total number of compositions: 429 [2023-09-01 06:47:03,650 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:47:03,650 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;@2cfc7e2f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:47:03,651 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:47:03,786 INFO L130 PetriNetUnfolder]: 349/1430 cut-off events. [2023-09-01 06:47:03,786 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-09-01 06:47:03,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:47:03,787 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:47:03,787 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:47:03,787 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:47:03,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1346682083, now seen corresponding path program 1 times [2023-09-01 06:47:03,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:47:03,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364167116] [2023-09-01 06:47:03,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:47:03,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:47:03,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:47:03,873 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:47:03,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:47:03,917 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:47:03,921 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:47:03,921 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:47:03,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 06:47:03,921 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:47:03,922 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:47:03,922 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:47:03,923 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 06:47:03,965 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 06:47:03,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 524 places, 588 transitions, 1404 flow [2023-09-01 06:47:36,954 INFO L130 PetriNetUnfolder]: 24713/95158 cut-off events. [2023-09-01 06:47:36,954 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 06:47:43,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119849 conditions, 95158 events. 24713/95158 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1473. Compared 1283971 event pairs, 16398 based on Foata normal form. 0/78567 useless extension candidates. Maximal degree in co-relation 58296. Up to 24576 conditions per place. [2023-09-01 06:47:43,754 INFO L82 GeneralOperation]: Start removeDead. Operand has 524 places, 588 transitions, 1404 flow [2023-09-01 06:47:45,773 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 524 places, 588 transitions, 1404 flow [2023-09-01 06:47:45,773 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:47:45,773 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 524 places, 588 transitions, 1404 flow [2023-09-01 06:47:45,774 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 524 places, 588 transitions, 1404 flow [2023-09-01 06:47:45,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 524 places, 588 transitions, 1404 flow [2023-09-01 06:48:14,923 INFO L130 PetriNetUnfolder]: 24713/95158 cut-off events. [2023-09-01 06:48:14,924 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 06:48:21,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119849 conditions, 95158 events. 24713/95158 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1473. Compared 1283971 event pairs, 16398 based on Foata normal form. 0/78567 useless extension candidates. Maximal degree in co-relation 58296. Up to 24576 conditions per place. [2023-09-01 06:48:33,061 INFO L119 LiptonReduction]: Number of co-enabled transitions 276960 [2023-09-01 06:48:38,740 INFO L134 LiptonReduction]: Checked pairs total: 866542 [2023-09-01 06:48:38,741 INFO L136 LiptonReduction]: Total number of compositions: 445 [2023-09-01 06:48:38,742 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:48:38,743 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;@2cfc7e2f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:48:38,743 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:48:38,950 INFO L130 PetriNetUnfolder]: 560/2099 cut-off events. [2023-09-01 06:48:38,951 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-09-01 06:48:38,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:48:38,951 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 06:48:38,951 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:48:38,951 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:48:38,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1453341515, now seen corresponding path program 1 times [2023-09-01 06:48:38,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:48:38,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693545868] [2023-09-01 06:48:38,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:48:38,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:48:38,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:48:38,978 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:48:38,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:48:38,998 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:48:38,998 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:48:38,999 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:48:38,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 06:48:38,999 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:48:38,999 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:48:39,000 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:48:39,000 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 06:48:39,038 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 06:48:39,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 561 places, 630 transitions, 1520 flow [2023-09-01 06:49:47,518 INFO L130 PetriNetUnfolder]: 53396/193537 cut-off events. [2023-09-01 06:49:47,518 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 06:50:03,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246916 conditions, 193537 events. 53396/193537 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2890. Compared 2825923 event pairs, 36879 based on Foata normal form. 0/160545 useless extension candidates. Maximal degree in co-relation 119826. Up to 53248 conditions per place. [2023-09-01 06:50:03,223 INFO L82 GeneralOperation]: Start removeDead. Operand has 561 places, 630 transitions, 1520 flow [2023-09-01 06:50:08,256 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 561 places, 630 transitions, 1520 flow [2023-09-01 06:50:08,256 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:50:08,256 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 561 places, 630 transitions, 1520 flow [2023-09-01 06:50:08,256 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 561 places, 630 transitions, 1520 flow [2023-09-01 06:50:08,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 561 places, 630 transitions, 1520 flow [2023-09-01 06:51:25,200 INFO L130 PetriNetUnfolder]: 53396/193537 cut-off events. [2023-09-01 06:51:25,200 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 06:51:41,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246916 conditions, 193537 events. 53396/193537 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2890. Compared 2825923 event pairs, 36879 based on Foata normal form. 0/160545 useless extension candidates. Maximal degree in co-relation 119826. Up to 53248 conditions per place. [2023-09-01 06:52:14,468 INFO L119 LiptonReduction]: Number of co-enabled transitions 322400 [2023-09-01 06:52:21,867 INFO L134 LiptonReduction]: Checked pairs total: 907705 [2023-09-01 06:52:21,867 INFO L136 LiptonReduction]: Total number of compositions: 495 [2023-09-01 06:52:21,873 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:52:21,877 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;@2cfc7e2f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:52:21,877 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:52:22,317 INFO L130 PetriNetUnfolder]: 913/3145 cut-off events. [2023-09-01 06:52:22,317 INFO L131 PetriNetUnfolder]: For 1672/1672 co-relation queries the response was YES. [2023-09-01 06:52:22,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:52:22,318 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 06:52:22,318 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:52:22,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:52:22,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1947543017, now seen corresponding path program 1 times [2023-09-01 06:52:22,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:52:22,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126831100] [2023-09-01 06:52:22,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:52:22,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:52:22,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:52:22,374 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:52:22,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:52:22,404 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:52:22,404 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:52:22,404 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:52:22,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 06:52:22,404 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:52:22,405 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:52:22,405 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:52:22,405 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-09-01 06:52:22,448 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-09-01 06:52:22,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 598 places, 672 transitions, 1638 flow