./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_06-cond_racing1.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_06-cond_racing1.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 830cb16a3cbc120e059f0ed7638e33ed20360a11f425952cf536aa3d659b86fc --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 06:32:34,106 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 06:32:34,108 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 06:32:34,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 06:32:34,134 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 06:32:34,135 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 06:32:34,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 06:32:34,138 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 06:32:34,139 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 06:32:34,140 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 06:32:34,141 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 06:32:34,142 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 06:32:34,143 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 06:32:34,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 06:32:34,144 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 06:32:34,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 06:32:34,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 06:32:34,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 06:32:34,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 06:32:34,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 06:32:34,155 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 06:32:34,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 06:32:34,158 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 06:32:34,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 06:32:34,162 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 06:32:34,162 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 06:32:34,163 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 06:32:34,163 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 06:32:34,164 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 06:32:34,165 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 06:32:34,165 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 06:32:34,166 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 06:32:34,166 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 06:32:34,167 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 06:32:34,168 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 06:32:34,168 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 06:32:34,169 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 06:32:34,169 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 06:32:34,169 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 06:32:34,170 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 06:32:34,171 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 06:32:34,185 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 06:32:34,204 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 06:32:34,205 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 06:32:34,205 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 06:32:34,209 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 06:32:34,210 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 06:32:34,210 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 06:32:34,211 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 06:32:34,211 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 06:32:34,211 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 06:32:34,212 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 06:32:34,212 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 06:32:34,212 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 06:32:34,213 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 06:32:34,213 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 06:32:34,213 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 06:32:34,213 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 06:32:34,213 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 06:32:34,213 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 06:32:34,213 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 06:32:34,214 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 06:32:34,214 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 06:32:34,214 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 06:32:34,214 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 06:32:34,214 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 06:32:34,215 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 06:32:34,215 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 06:32:34,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:32:34,215 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 06:32:34,215 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 06:32:34,215 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 06:32:34,216 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 06:32:34,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 06:32:34,216 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 06:32:34,216 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 06:32:34,216 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 06:32:34,216 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 06:32:34,217 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 06:32:34,217 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 830cb16a3cbc120e059f0ed7638e33ed20360a11f425952cf536aa3d659b86fc Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 06:32:34,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 06:32:34,504 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 06:32:34,506 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 06:32:34,507 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 06:32:34,508 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 06:32:34,509 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_06-cond_racing1.i [2023-09-01 06:32:35,607 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 06:32:35,806 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 06:32:35,807 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_06-cond_racing1.i [2023-09-01 06:32:35,824 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa4a8728b/7e8df2184daa4cef9c5726d5edff1403/FLAG2ab8e4f9d [2023-09-01 06:32:36,146 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa4a8728b/7e8df2184daa4cef9c5726d5edff1403 [2023-09-01 06:32:36,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 06:32:36,149 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 06:32:36,150 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 06:32:36,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 06:32:36,152 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 06:32:36,160 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:32:36" (1/1) ... [2023-09-01 06:32:36,163 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68f74f1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:32:36, skipping insertion in model container [2023-09-01 06:32:36,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:32:36" (1/1) ... [2023-09-01 06:32:36,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 06:32:36,228 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 06:32:36,569 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_06-cond_racing1.i[41322,41335] [2023-09-01 06:32:36,594 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:32:36,611 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 06:32:36,651 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_06-cond_racing1.i[41322,41335] [2023-09-01 06:32:36,662 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:32:36,731 INFO L208 MainTranslator]: Completed translation [2023-09-01 06:32:36,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:32:36 WrapperNode [2023-09-01 06:32:36,732 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 06:32:36,733 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 06:32:36,734 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 06:32:36,734 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 06:32:36,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:32:36" (1/1) ... [2023-09-01 06:32:36,789 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:32:36" (1/1) ... [2023-09-01 06:32:36,815 INFO L138 Inliner]: procedures = 270, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 93 [2023-09-01 06:32:36,815 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 06:32:36,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 06:32:36,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 06:32:36,817 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 06:32:36,824 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:32:36" (1/1) ... [2023-09-01 06:32:36,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:32:36" (1/1) ... [2023-09-01 06:32:36,837 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:32:36" (1/1) ... [2023-09-01 06:32:36,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:32:36" (1/1) ... [2023-09-01 06:32:36,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:32:36" (1/1) ... [2023-09-01 06:32:36,851 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:32:36" (1/1) ... [2023-09-01 06:32:36,853 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:32:36" (1/1) ... [2023-09-01 06:32:36,858 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:32:36" (1/1) ... [2023-09-01 06:32:36,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 06:32:36,866 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 06:32:36,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 06:32:36,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 06:32:36,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:32:36" (1/1) ... [2023-09-01 06:32:36,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:32:36,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:32:36,912 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 06:32:36,919 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 06:32:36,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 06:32:36,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 06:32:36,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 06:32:36,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 06:32:36,943 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 06:32:36,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 06:32:36,943 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 06:32:36,943 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 06:32:36,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 06:32:36,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 06:32:36,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 06:32:36,945 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 06:32:37,132 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 06:32:37,134 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 06:32:37,312 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 06:32:37,317 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 06:32:37,317 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-09-01 06:32:37,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:32:37 BoogieIcfgContainer [2023-09-01 06:32:37,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 06:32:37,320 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 06:32:37,320 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 06:32:37,323 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 06:32:37,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 06:32:36" (1/3) ... [2023-09-01 06:32:37,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e04d135 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:32:37, skipping insertion in model container [2023-09-01 06:32:37,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:32:36" (2/3) ... [2023-09-01 06:32:37,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e04d135 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:32:37, skipping insertion in model container [2023-09-01 06:32:37,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:32:37" (3/3) ... [2023-09-01 06:32:37,325 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_06-cond_racing1.i [2023-09-01 06:32:37,330 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 06:32:37,336 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 06:32:37,337 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-09-01 06:32:37,337 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 06:32:37,383 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 06:32:37,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 134 transitions, 276 flow [2023-09-01 06:32:37,463 INFO L130 PetriNetUnfolder]: 23/175 cut-off events. [2023-09-01 06:32:37,463 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 06:32:37,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 175 events. 23/175 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 403 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 86. Up to 6 conditions per place. [2023-09-01 06:32:37,469 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 134 transitions, 276 flow [2023-09-01 06:32:37,472 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 125 transitions, 255 flow [2023-09-01 06:32:37,474 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:32:37,487 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 114 places, 125 transitions, 255 flow [2023-09-01 06:32:37,489 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 114 places, 125 transitions, 255 flow [2023-09-01 06:32:37,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 125 transitions, 255 flow [2023-09-01 06:32:37,532 INFO L130 PetriNetUnfolder]: 22/166 cut-off events. [2023-09-01 06:32:37,536 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:32:37,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 166 events. 22/166 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 391 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 86. Up to 6 conditions per place. [2023-09-01 06:32:37,539 INFO L119 LiptonReduction]: Number of co-enabled transitions 3672 [2023-09-01 06:32:40,580 INFO L134 LiptonReduction]: Checked pairs total: 6233 [2023-09-01 06:32:40,580 INFO L136 LiptonReduction]: Total number of compositions: 118 [2023-09-01 06:32:40,597 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:32:40,617 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;@1edd297f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:32:40,618 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:32:40,623 INFO L130 PetriNetUnfolder]: 5/30 cut-off events. [2023-09-01 06:32:40,628 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:32:40,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:32:40,629 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 06:32:40,630 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:32:40,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:32:40,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1888744615, now seen corresponding path program 1 times [2023-09-01 06:32:40,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:32:40,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348916613] [2023-09-01 06:32:40,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:32:40,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:32:40,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:32:40,767 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:32:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:32:40,877 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:32:40,878 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:32:40,879 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:32:40,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 06:32:40,881 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:32:40,887 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:32:40,888 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:32:40,888 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 06:32:40,916 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 06:32:40,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 172 transitions, 362 flow [2023-09-01 06:32:40,981 INFO L130 PetriNetUnfolder]: 40/290 cut-off events. [2023-09-01 06:32:40,982 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 06:32:40,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 290 events. 40/290 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 838 event pairs, 0 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 177. Up to 9 conditions per place. [2023-09-01 06:32:40,987 INFO L82 GeneralOperation]: Start removeDead. Operand has 155 places, 172 transitions, 362 flow [2023-09-01 06:32:40,990 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 155 places, 172 transitions, 362 flow [2023-09-01 06:32:40,990 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:32:40,990 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 155 places, 172 transitions, 362 flow [2023-09-01 06:32:40,990 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 155 places, 172 transitions, 362 flow [2023-09-01 06:32:40,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 172 transitions, 362 flow [2023-09-01 06:32:41,023 INFO L130 PetriNetUnfolder]: 40/290 cut-off events. [2023-09-01 06:32:41,023 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 06:32:41,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 290 events. 40/290 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 838 event pairs, 0 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 177. Up to 9 conditions per place. [2023-09-01 06:32:41,032 INFO L119 LiptonReduction]: Number of co-enabled transitions 11304 [2023-09-01 06:32:43,746 INFO L134 LiptonReduction]: Checked pairs total: 27463 [2023-09-01 06:32:43,746 INFO L136 LiptonReduction]: Total number of compositions: 139 [2023-09-01 06:32:43,749 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:32:43,751 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;@1edd297f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:32:43,754 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:32:43,761 INFO L130 PetriNetUnfolder]: 15/70 cut-off events. [2023-09-01 06:32:43,761 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 06:32:43,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:32:43,761 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 06:32:43,761 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:32:43,762 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:32:43,762 INFO L85 PathProgramCache]: Analyzing trace with hash 161027338, now seen corresponding path program 1 times [2023-09-01 06:32:43,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:32:43,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428417451] [2023-09-01 06:32:43,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:32:43,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:32:43,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:32:43,800 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:32:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:32:43,826 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:32:43,826 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:32:43,827 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:32:43,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 06:32:43,828 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:32:43,830 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:32:43,830 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:32:43,830 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 06:32:43,853 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 06:32:43,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 210 transitions, 450 flow [2023-09-01 06:32:43,886 INFO L130 PetriNetUnfolder]: 62/444 cut-off events. [2023-09-01 06:32:43,887 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 06:32:43,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 472 conditions, 444 events. 62/444 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1474 event pairs, 1 based on Foata normal form. 0/346 useless extension candidates. Maximal degree in co-relation 298. Up to 16 conditions per place. [2023-09-01 06:32:43,889 INFO L82 GeneralOperation]: Start removeDead. Operand has 188 places, 210 transitions, 450 flow [2023-09-01 06:32:43,891 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 188 places, 210 transitions, 450 flow [2023-09-01 06:32:43,891 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:32:43,891 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 188 places, 210 transitions, 450 flow [2023-09-01 06:32:43,891 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 188 places, 210 transitions, 450 flow [2023-09-01 06:32:43,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 210 transitions, 450 flow [2023-09-01 06:32:43,920 INFO L130 PetriNetUnfolder]: 62/444 cut-off events. [2023-09-01 06:32:43,921 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 06:32:43,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 472 conditions, 444 events. 62/444 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1474 event pairs, 1 based on Foata normal form. 0/346 useless extension candidates. Maximal degree in co-relation 298. Up to 16 conditions per place. [2023-09-01 06:32:43,934 INFO L119 LiptonReduction]: Number of co-enabled transitions 21168 [2023-09-01 06:32:46,890 INFO L134 LiptonReduction]: Checked pairs total: 53310 [2023-09-01 06:32:46,892 INFO L136 LiptonReduction]: Total number of compositions: 163 [2023-09-01 06:32:46,893 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:32:46,894 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;@1edd297f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:32:46,894 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:32:46,901 INFO L130 PetriNetUnfolder]: 26/116 cut-off events. [2023-09-01 06:32:46,902 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 06:32:46,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:32:46,902 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 06:32:46,907 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:32:46,907 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:32:46,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1948353862, now seen corresponding path program 1 times [2023-09-01 06:32:46,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:32:46,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547736783] [2023-09-01 06:32:46,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:32:46,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:32:46,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:32:46,941 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:32:46,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:32:46,971 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:32:46,972 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:32:46,972 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:32:46,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 06:32:46,973 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:32:46,973 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:32:46,973 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:32:46,973 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 06:32:46,991 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 06:32:46,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 221 places, 248 transitions, 540 flow [2023-09-01 06:32:47,079 INFO L130 PetriNetUnfolder]: 96/678 cut-off events. [2023-09-01 06:32:47,079 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 06:32:47,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 733 conditions, 678 events. 96/678 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2599 event pairs, 6 based on Foata normal form. 0/528 useless extension candidates. Maximal degree in co-relation 464. Up to 32 conditions per place. [2023-09-01 06:32:47,085 INFO L82 GeneralOperation]: Start removeDead. Operand has 221 places, 248 transitions, 540 flow [2023-09-01 06:32:47,090 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 221 places, 248 transitions, 540 flow [2023-09-01 06:32:47,090 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:32:47,091 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 221 places, 248 transitions, 540 flow [2023-09-01 06:32:47,091 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 221 places, 248 transitions, 540 flow [2023-09-01 06:32:47,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 221 places, 248 transitions, 540 flow [2023-09-01 06:32:47,160 INFO L130 PetriNetUnfolder]: 96/678 cut-off events. [2023-09-01 06:32:47,160 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 06:32:47,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 733 conditions, 678 events. 96/678 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2599 event pairs, 6 based on Foata normal form. 0/528 useless extension candidates. Maximal degree in co-relation 464. Up to 32 conditions per place. [2023-09-01 06:32:47,183 INFO L119 LiptonReduction]: Number of co-enabled transitions 33840 [2023-09-01 06:32:50,450 INFO L134 LiptonReduction]: Checked pairs total: 91180 [2023-09-01 06:32:50,450 INFO L136 LiptonReduction]: Total number of compositions: 192 [2023-09-01 06:32:50,452 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:32:50,452 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;@1edd297f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:32:50,452 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:32:50,464 INFO L130 PetriNetUnfolder]: 38/170 cut-off events. [2023-09-01 06:32:50,464 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-09-01 06:32:50,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:32:50,465 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 06:32:50,466 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:32:50,466 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:32:50,466 INFO L85 PathProgramCache]: Analyzing trace with hash 387731329, now seen corresponding path program 1 times [2023-09-01 06:32:50,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:32:50,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835248510] [2023-09-01 06:32:50,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:32:50,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:32:50,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:32:50,502 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:32:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:32:50,536 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:32:50,536 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:32:50,536 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:32:50,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 06:32:50,537 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:32:50,537 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:32:50,537 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:32:50,537 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 06:32:50,558 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 06:32:50,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 254 places, 286 transitions, 632 flow [2023-09-01 06:32:50,691 INFO L130 PetriNetUnfolder]: 158/1076 cut-off events. [2023-09-01 06:32:50,692 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 06:32:50,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1187 conditions, 1076 events. 158/1076 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4887 event pairs, 23 based on Foata normal form. 0/842 useless extension candidates. Maximal degree in co-relation 723. Up to 80 conditions per place. [2023-09-01 06:32:50,701 INFO L82 GeneralOperation]: Start removeDead. Operand has 254 places, 286 transitions, 632 flow [2023-09-01 06:32:50,707 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 254 places, 286 transitions, 632 flow [2023-09-01 06:32:50,707 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:32:50,707 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 254 places, 286 transitions, 632 flow [2023-09-01 06:32:50,707 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 254 places, 286 transitions, 632 flow [2023-09-01 06:32:50,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 254 places, 286 transitions, 632 flow [2023-09-01 06:32:50,826 INFO L130 PetriNetUnfolder]: 158/1076 cut-off events. [2023-09-01 06:32:50,826 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 06:32:50,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1187 conditions, 1076 events. 158/1076 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4887 event pairs, 23 based on Foata normal form. 0/842 useless extension candidates. Maximal degree in co-relation 723. Up to 80 conditions per place. [2023-09-01 06:32:50,873 INFO L119 LiptonReduction]: Number of co-enabled transitions 49320 [2023-09-01 06:32:54,014 INFO L134 LiptonReduction]: Checked pairs total: 153697 [2023-09-01 06:32:54,015 INFO L136 LiptonReduction]: Total number of compositions: 212 [2023-09-01 06:32:54,016 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:32:54,016 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;@1edd297f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:32:54,016 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:32:54,048 INFO L130 PetriNetUnfolder]: 52/233 cut-off events. [2023-09-01 06:32:54,049 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-09-01 06:32:54,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:32:54,049 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:32:54,049 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:32:54,049 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:32:54,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1181778982, now seen corresponding path program 1 times [2023-09-01 06:32:54,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:32:54,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914652392] [2023-09-01 06:32:54,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:32:54,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:32:54,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:32:54,081 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:32:54,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:32:54,095 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:32:54,095 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:32:54,096 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:32:54,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 06:32:54,097 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:32:54,097 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:32:54,100 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:32:54,100 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 06:32:54,118 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 06:32:54,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 287 places, 324 transitions, 726 flow [2023-09-01 06:32:54,385 INFO L130 PetriNetUnfolder]: 284/1810 cut-off events. [2023-09-01 06:32:54,385 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 06:32:54,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2042 conditions, 1810 events. 284/1810 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 10208 event pairs, 72 based on Foata normal form. 0/1428 useless extension candidates. Maximal degree in co-relation 1175. Up to 192 conditions per place. [2023-09-01 06:32:54,409 INFO L82 GeneralOperation]: Start removeDead. Operand has 287 places, 324 transitions, 726 flow [2023-09-01 06:32:54,421 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 287 places, 324 transitions, 726 flow [2023-09-01 06:32:54,425 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:32:54,425 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 287 places, 324 transitions, 726 flow [2023-09-01 06:32:54,425 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 287 places, 324 transitions, 726 flow [2023-09-01 06:32:54,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 287 places, 324 transitions, 726 flow [2023-09-01 06:32:54,657 INFO L130 PetriNetUnfolder]: 284/1810 cut-off events. [2023-09-01 06:32:54,658 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 06:32:54,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2042 conditions, 1810 events. 284/1810 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 10208 event pairs, 72 based on Foata normal form. 0/1428 useless extension candidates. Maximal degree in co-relation 1175. Up to 192 conditions per place. [2023-09-01 06:32:54,720 INFO L119 LiptonReduction]: Number of co-enabled transitions 67608 [2023-09-01 06:32:58,284 INFO L134 LiptonReduction]: Checked pairs total: 194107 [2023-09-01 06:32:58,284 INFO L136 LiptonReduction]: Total number of compositions: 240 [2023-09-01 06:32:58,285 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:32:58,286 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;@1edd297f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:32:58,286 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:32:58,306 INFO L130 PetriNetUnfolder]: 69/311 cut-off events. [2023-09-01 06:32:58,306 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-09-01 06:32:58,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:32:58,307 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:32:58,307 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:32:58,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:32:58,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1850281683, now seen corresponding path program 1 times [2023-09-01 06:32:58,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:32:58,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044223736] [2023-09-01 06:32:58,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:32:58,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:32:58,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:32:58,344 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:32:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:32:58,385 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:32:58,386 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:32:58,386 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:32:58,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 06:32:58,386 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:32:58,389 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:32:58,390 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:32:58,390 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 06:32:58,420 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 06:32:58,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 320 places, 362 transitions, 822 flow [2023-09-01 06:32:58,921 INFO L130 PetriNetUnfolder]: 554/3232 cut-off events. [2023-09-01 06:32:58,921 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 06:32:58,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3730 conditions, 3232 events. 554/3232 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 22297 event pairs, 201 based on Foata normal form. 0/2574 useless extension candidates. Maximal degree in co-relation 2028. Up to 448 conditions per place. [2023-09-01 06:32:58,969 INFO L82 GeneralOperation]: Start removeDead. Operand has 320 places, 362 transitions, 822 flow [2023-09-01 06:32:58,990 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 320 places, 362 transitions, 822 flow [2023-09-01 06:32:58,990 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:32:58,991 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 320 places, 362 transitions, 822 flow [2023-09-01 06:32:58,991 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 320 places, 362 transitions, 822 flow [2023-09-01 06:32:58,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 320 places, 362 transitions, 822 flow [2023-09-01 06:32:59,497 INFO L130 PetriNetUnfolder]: 554/3232 cut-off events. [2023-09-01 06:32:59,497 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 06:32:59,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3730 conditions, 3232 events. 554/3232 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 22297 event pairs, 201 based on Foata normal form. 0/2574 useless extension candidates. Maximal degree in co-relation 2028. Up to 448 conditions per place. [2023-09-01 06:32:59,629 INFO L119 LiptonReduction]: Number of co-enabled transitions 88704 [2023-09-01 06:33:03,026 INFO L134 LiptonReduction]: Checked pairs total: 259826 [2023-09-01 06:33:03,027 INFO L136 LiptonReduction]: Total number of compositions: 263 [2023-09-01 06:33:03,029 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:33:03,031 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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;@1edd297f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:33:03,032 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:33:03,071 INFO L130 PetriNetUnfolder]: 91/413 cut-off events. [2023-09-01 06:33:03,071 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-09-01 06:33:03,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:33:03,072 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:33:03,072 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:33:03,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:33:03,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1837185643, now seen corresponding path program 1 times [2023-09-01 06:33:03,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:33:03,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241814170] [2023-09-01 06:33:03,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:33:03,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:33:03,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:33:03,116 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:33:03,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:33:03,139 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:33:03,140 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:33:03,140 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:33:03,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 06:33:03,140 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:33:03,141 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:33:03,141 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:33:03,141 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 06:33:03,167 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 06:33:03,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 353 places, 400 transitions, 920 flow [2023-09-01 06:33:04,549 INFO L130 PetriNetUnfolder]: 1144/6062 cut-off events. [2023-09-01 06:33:04,550 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 06:33:04,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7147 conditions, 6062 events. 1144/6062 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 50093 event pairs, 522 based on Foata normal form. 0/4872 useless extension candidates. Maximal degree in co-relation 3714. Up to 1024 conditions per place. [2023-09-01 06:33:04,627 INFO L82 GeneralOperation]: Start removeDead. Operand has 353 places, 400 transitions, 920 flow [2023-09-01 06:33:04,662 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 353 places, 400 transitions, 920 flow [2023-09-01 06:33:04,662 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:33:04,662 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 353 places, 400 transitions, 920 flow [2023-09-01 06:33:04,662 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 353 places, 400 transitions, 920 flow [2023-09-01 06:33:04,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 353 places, 400 transitions, 920 flow [2023-09-01 06:33:05,618 INFO L130 PetriNetUnfolder]: 1144/6062 cut-off events. [2023-09-01 06:33:05,619 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 06:33:05,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7147 conditions, 6062 events. 1144/6062 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 50093 event pairs, 522 based on Foata normal form. 0/4872 useless extension candidates. Maximal degree in co-relation 3714. Up to 1024 conditions per place. [2023-09-01 06:33:06,058 INFO L119 LiptonReduction]: Number of co-enabled transitions 112608 [2023-09-01 06:33:09,536 INFO L134 LiptonReduction]: Checked pairs total: 335426 [2023-09-01 06:33:09,536 INFO L136 LiptonReduction]: Total number of compositions: 290 [2023-09-01 06:33:09,537 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:33:09,538 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;@1edd297f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:33:09,538 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:33:09,573 INFO L130 PetriNetUnfolder]: 122/551 cut-off events. [2023-09-01 06:33:09,573 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-09-01 06:33:09,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:33:09,574 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:33:09,574 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:33:09,574 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:33:09,574 INFO L85 PathProgramCache]: Analyzing trace with hash -702650984, now seen corresponding path program 1 times [2023-09-01 06:33:09,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:33:09,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226254992] [2023-09-01 06:33:09,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:33:09,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:33:09,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:33:09,588 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:33:09,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:33:09,600 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:33:09,600 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:33:09,600 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:33:09,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 06:33:09,600 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:33:09,602 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:33:09,602 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:33:09,602 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 06:33:09,625 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 06:33:09,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 386 places, 438 transitions, 1020 flow [2023-09-01 06:33:12,336 INFO L130 PetriNetUnfolder]: 2438/11772 cut-off events. [2023-09-01 06:33:12,336 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 06:33:12,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14149 conditions, 11772 events. 2438/11772 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 114231 event pairs, 1291 based on Foata normal form. 0/9538 useless extension candidates. Maximal degree in co-relation 7129. Up to 2304 conditions per place. [2023-09-01 06:33:12,528 INFO L82 GeneralOperation]: Start removeDead. Operand has 386 places, 438 transitions, 1020 flow [2023-09-01 06:33:12,688 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 386 places, 438 transitions, 1020 flow [2023-09-01 06:33:12,688 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:33:12,690 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 386 places, 438 transitions, 1020 flow [2023-09-01 06:33:12,691 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 386 places, 438 transitions, 1020 flow [2023-09-01 06:33:12,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 386 places, 438 transitions, 1020 flow [2023-09-01 06:33:15,249 INFO L130 PetriNetUnfolder]: 2438/11772 cut-off events. [2023-09-01 06:33:15,250 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 06:33:15,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14149 conditions, 11772 events. 2438/11772 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 114231 event pairs, 1291 based on Foata normal form. 0/9538 useless extension candidates. Maximal degree in co-relation 7129. Up to 2304 conditions per place. [2023-09-01 06:33:15,903 INFO L119 LiptonReduction]: Number of co-enabled transitions 139320 [2023-09-01 06:33:20,016 INFO L134 LiptonReduction]: Checked pairs total: 421119 [2023-09-01 06:33:20,017 INFO L136 LiptonReduction]: Total number of compositions: 316 [2023-09-01 06:33:20,019 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:33:20,021 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;@1edd297f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:33:20,021 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:33:20,113 INFO L130 PetriNetUnfolder]: 169/747 cut-off events. [2023-09-01 06:33:20,113 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-09-01 06:33:20,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:33:20,113 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:33:20,114 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:33:20,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:33:20,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1791457416, now seen corresponding path program 1 times [2023-09-01 06:33:20,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:33:20,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809166318] [2023-09-01 06:33:20,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:33:20,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:33:20,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:33:20,137 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:33:20,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:33:20,159 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:33:20,159 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:33:20,160 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:33:20,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 06:33:20,160 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:33:20,162 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:33:20,162 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:33:20,162 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 06:33:20,184 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 06:33:20,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 419 places, 476 transitions, 1122 flow [2023-09-01 06:33:25,675 INFO L130 PetriNetUnfolder]: 5268/23370 cut-off events. [2023-09-01 06:33:25,676 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 06:33:26,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28576 conditions, 23370 events. 5268/23370 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 257005 event pairs, 3084 based on Foata normal form. 0/19068 useless extension candidates. Maximal degree in co-relation 14129. Up to 5120 conditions per place. [2023-09-01 06:33:26,137 INFO L82 GeneralOperation]: Start removeDead. Operand has 419 places, 476 transitions, 1122 flow [2023-09-01 06:33:26,368 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 419 places, 476 transitions, 1122 flow [2023-09-01 06:33:26,369 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:33:26,369 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 419 places, 476 transitions, 1122 flow [2023-09-01 06:33:26,369 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 419 places, 476 transitions, 1122 flow [2023-09-01 06:33:26,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 419 places, 476 transitions, 1122 flow [2023-09-01 06:33:32,007 INFO L130 PetriNetUnfolder]: 5268/23370 cut-off events. [2023-09-01 06:33:32,007 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 06:33:32,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28576 conditions, 23370 events. 5268/23370 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 257005 event pairs, 3084 based on Foata normal form. 0/19068 useless extension candidates. Maximal degree in co-relation 14129. Up to 5120 conditions per place. [2023-09-01 06:33:33,805 INFO L119 LiptonReduction]: Number of co-enabled transitions 168840 [2023-09-01 06:33:37,943 INFO L134 LiptonReduction]: Checked pairs total: 524741 [2023-09-01 06:33:37,944 INFO L136 LiptonReduction]: Total number of compositions: 336 [2023-09-01 06:33:37,945 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:33:37,945 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;@1edd297f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:33:37,945 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:33:38,028 INFO L130 PetriNetUnfolder]: 245/1036 cut-off events. [2023-09-01 06:33:38,028 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-09-01 06:33:38,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:33:38,029 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:33:38,029 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:33:38,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:33:38,029 INFO L85 PathProgramCache]: Analyzing trace with hash 125482522, now seen corresponding path program 1 times [2023-09-01 06:33:38,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:33:38,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843429098] [2023-09-01 06:33:38,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:33:38,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:33:38,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:33:38,046 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:33:38,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:33:38,060 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:33:38,060 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:33:38,060 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:33:38,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 06:33:38,060 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:33:38,061 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:33:38,061 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:33:38,061 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 06:33:38,085 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 06:33:38,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 452 places, 514 transitions, 1226 flow [2023-09-01 06:33:50,789 INFO L130 PetriNetUnfolder]: 11426/47000 cut-off events. [2023-09-01 06:33:50,789 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 06:33:51,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58364 conditions, 47000 events. 11426/47000 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 771. Compared 574059 event pairs, 7181 based on Foata normal form. 0/38582 useless extension candidates. Maximal degree in co-relation 28554. Up to 11264 conditions per place. [2023-09-01 06:33:51,905 INFO L82 GeneralOperation]: Start removeDead. Operand has 452 places, 514 transitions, 1226 flow [2023-09-01 06:33:52,631 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 452 places, 514 transitions, 1226 flow [2023-09-01 06:33:52,632 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:33:52,632 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 452 places, 514 transitions, 1226 flow [2023-09-01 06:33:52,632 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 452 places, 514 transitions, 1226 flow [2023-09-01 06:33:52,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 452 places, 514 transitions, 1226 flow [2023-09-01 06:34:06,356 INFO L130 PetriNetUnfolder]: 11426/47000 cut-off events. [2023-09-01 06:34:06,357 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 06:34:07,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58364 conditions, 47000 events. 11426/47000 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 771. Compared 574059 event pairs, 7181 based on Foata normal form. 0/38582 useless extension candidates. Maximal degree in co-relation 28554. Up to 11264 conditions per place. [2023-09-01 06:34:10,937 INFO L119 LiptonReduction]: Number of co-enabled transitions 201168 [2023-09-01 06:34:14,384 INFO L134 LiptonReduction]: Checked pairs total: 626420 [2023-09-01 06:34:14,384 INFO L136 LiptonReduction]: Total number of compositions: 357 [2023-09-01 06:34:14,385 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:34:14,386 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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;@1edd297f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:34:14,386 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:34:14,562 INFO L130 PetriNetUnfolder]: 372/1474 cut-off events. [2023-09-01 06:34:14,562 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-09-01 06:34:14,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:34:14,563 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:34:14,563 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:34:14,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:34:14,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1965282948, now seen corresponding path program 1 times [2023-09-01 06:34:14,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:34:14,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572810359] [2023-09-01 06:34:14,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:34:14,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:34:14,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:34:14,589 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:34:14,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:34:14,611 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:34:14,611 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:34:14,611 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:34:14,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 06:34:14,612 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:34:14,612 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:34:14,613 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:34:14,613 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 06:34:14,642 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 06:34:14,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 485 places, 552 transitions, 1332 flow [2023-09-01 06:34:43,983 INFO L130 PetriNetUnfolder]: 24752/95206 cut-off events. [2023-09-01 06:34:43,983 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 06:34:49,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119897 conditions, 95206 events. 24752/95206 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1476. Compared 1280091 event pairs, 16398 based on Foata normal form. 0/78576 useless extension candidates. Maximal degree in co-relation 58340. Up to 24576 conditions per place. [2023-09-01 06:34:49,235 INFO L82 GeneralOperation]: Start removeDead. Operand has 485 places, 552 transitions, 1332 flow [2023-09-01 06:34:51,208 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 485 places, 552 transitions, 1332 flow [2023-09-01 06:34:51,208 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:34:51,209 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 485 places, 552 transitions, 1332 flow [2023-09-01 06:34:51,209 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 485 places, 552 transitions, 1332 flow [2023-09-01 06:34:51,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 485 places, 552 transitions, 1332 flow [2023-09-01 06:35:19,100 INFO L130 PetriNetUnfolder]: 24752/95206 cut-off events. [2023-09-01 06:35:19,101 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 06:35:25,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119897 conditions, 95206 events. 24752/95206 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1476. Compared 1280091 event pairs, 16398 based on Foata normal form. 0/78576 useless extension candidates. Maximal degree in co-relation 58340. Up to 24576 conditions per place. [2023-09-01 06:35:35,952 INFO L119 LiptonReduction]: Number of co-enabled transitions 236304 [2023-09-01 06:35:40,982 INFO L134 LiptonReduction]: Checked pairs total: 831776 [2023-09-01 06:35:40,983 INFO L136 LiptonReduction]: Total number of compositions: 387 [2023-09-01 06:35:40,984 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:35:40,985 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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;@1edd297f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:35:40,985 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:35:41,205 INFO L130 PetriNetUnfolder]: 585/2149 cut-off events. [2023-09-01 06:35:41,205 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-09-01 06:35:41,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:35:41,206 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 06:35:41,206 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:35:41,206 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:35:41,206 INFO L85 PathProgramCache]: Analyzing trace with hash -16403469, now seen corresponding path program 1 times [2023-09-01 06:35:41,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:35:41,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793334799] [2023-09-01 06:35:41,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:35:41,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:35:41,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:35:41,233 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:35:41,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:35:41,255 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:35:41,256 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:35:41,256 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:35:41,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 06:35:41,256 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:35:41,258 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:35:41,258 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:35:41,258 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 06:35:41,288 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 06:35:41,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 518 places, 590 transitions, 1440 flow [2023-09-01 06:36:45,329 INFO L130 PetriNetUnfolder]: 53438/193588 cut-off events. [2023-09-01 06:36:45,330 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 06:36:59,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246967 conditions, 193588 events. 53438/193588 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2900. Compared 2836014 event pairs, 36879 based on Foata normal form. 0/160554 useless extension candidates. Maximal degree in co-relation 119871. Up to 53248 conditions per place. [2023-09-01 06:36:59,827 INFO L82 GeneralOperation]: Start removeDead. Operand has 518 places, 590 transitions, 1440 flow [2023-09-01 06:37:04,705 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 518 places, 590 transitions, 1440 flow [2023-09-01 06:37:04,705 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:37:04,705 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 518 places, 590 transitions, 1440 flow [2023-09-01 06:37:04,706 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 518 places, 590 transitions, 1440 flow [2023-09-01 06:37:04,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 518 places, 590 transitions, 1440 flow [2023-09-01 06:38:09,244 INFO L130 PetriNetUnfolder]: 53438/193588 cut-off events. [2023-09-01 06:38:09,244 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 06:38:24,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246967 conditions, 193588 events. 53438/193588 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2900. Compared 2836014 event pairs, 36879 based on Foata normal form. 0/160554 useless extension candidates. Maximal degree in co-relation 119871. Up to 53248 conditions per place. [2023-09-01 06:38:50,618 INFO L119 LiptonReduction]: Number of co-enabled transitions 274248 [2023-09-01 06:38:54,950 INFO L134 LiptonReduction]: Checked pairs total: 868931 [2023-09-01 06:38:54,950 INFO L136 LiptonReduction]: Total number of compositions: 412 [2023-09-01 06:38:54,952 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:38:54,952 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;@1edd297f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:38:54,952 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:38:55,357 INFO L130 PetriNetUnfolder]: 940/3197 cut-off events. [2023-09-01 06:38:55,357 INFO L131 PetriNetUnfolder]: For 1672/1672 co-relation queries the response was YES. [2023-09-01 06:38:55,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:38:55,358 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 06:38:55,358 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:38:55,358 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:38:55,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1762507140, now seen corresponding path program 1 times [2023-09-01 06:38:55,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:38:55,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642466347] [2023-09-01 06:38:55,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:38:55,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:38:55,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:38:55,395 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:38:55,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:38:55,417 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:38:55,418 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:38:55,418 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:38:55,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 06:38:55,418 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:38:55,419 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:38:55,419 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:38:55,419 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-09-01 06:38:55,449 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-09-01 06:38:55,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 551 places, 628 transitions, 1550 flow