./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_24-sound_lock_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_24-sound_lock_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1eea0d699fc30cae440905f5eeea19b8e9e5d0b5cc249e9ffded8d356549b279 --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 06:42:06,092 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 06:42:06,094 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 06:42:06,121 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 06:42:06,121 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 06:42:06,122 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 06:42:06,123 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 06:42:06,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 06:42:06,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 06:42:06,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 06:42:06,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 06:42:06,127 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 06:42:06,127 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 06:42:06,133 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 06:42:06,135 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 06:42:06,138 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 06:42:06,138 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 06:42:06,139 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 06:42:06,140 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 06:42:06,141 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 06:42:06,150 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 06:42:06,150 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 06:42:06,153 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 06:42:06,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 06:42:06,155 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 06:42:06,156 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 06:42:06,156 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 06:42:06,156 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 06:42:06,156 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 06:42:06,157 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 06:42:06,157 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 06:42:06,158 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 06:42:06,158 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 06:42:06,158 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 06:42:06,159 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 06:42:06,159 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 06:42:06,160 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 06:42:06,160 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 06:42:06,160 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 06:42:06,160 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 06:42:06,161 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 06:42:06,167 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 06:42:06,191 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 06:42:06,191 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 06:42:06,192 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 06:42:06,192 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 06:42:06,193 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 06:42:06,193 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 06:42:06,194 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 06:42:06,194 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 06:42:06,194 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 06:42:06,194 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 06:42:06,195 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 06:42:06,195 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 06:42:06,195 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 06:42:06,195 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 06:42:06,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 06:42:06,196 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 06:42:06,196 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 06:42:06,196 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 06:42:06,196 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 06:42:06,196 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 06:42:06,197 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 06:42:06,197 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 06:42:06,197 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 06:42:06,197 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 06:42:06,197 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 06:42:06,197 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 06:42:06,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:42:06,198 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 06:42:06,198 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 06:42:06,198 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 06:42:06,198 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 06:42:06,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 06:42:06,198 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 06:42:06,199 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 06:42:06,199 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 06:42:06,199 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 06:42:06,199 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 06:42:06,199 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1eea0d699fc30cae440905f5eeea19b8e9e5d0b5cc249e9ffded8d356549b279 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 06:42:06,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 06:42:06,489 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 06:42:06,491 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 06:42:06,492 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 06:42:06,492 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 06:42:06,493 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_24-sound_lock_racing.i [2023-09-01 06:42:07,408 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 06:42:07,607 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 06:42:07,608 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_24-sound_lock_racing.i [2023-09-01 06:42:07,615 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af6b0d791/1a5c66aeb6d74f558d94223024ea11a3/FLAGcc99319ff [2023-09-01 06:42:07,628 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af6b0d791/1a5c66aeb6d74f558d94223024ea11a3 [2023-09-01 06:42:07,630 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 06:42:07,631 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 06:42:07,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 06:42:07,634 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 06:42:07,636 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 06:42:07,636 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:42:07" (1/1) ... [2023-09-01 06:42:07,637 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13c1bdce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:42:07, skipping insertion in model container [2023-09-01 06:42:07,639 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:42:07" (1/1) ... [2023-09-01 06:42:07,643 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 06:42:07,677 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 06:42:07,928 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_24-sound_lock_racing.i[30176,30189] [2023-09-01 06:42:07,943 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:42:07,954 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 06:42:07,983 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_24-sound_lock_racing.i[30176,30189] [2023-09-01 06:42:08,000 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:42:08,038 INFO L208 MainTranslator]: Completed translation [2023-09-01 06:42:08,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:42:08 WrapperNode [2023-09-01 06:42:08,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 06:42:08,039 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 06:42:08,039 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 06:42:08,039 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 06:42:08,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:42:08" (1/1) ... [2023-09-01 06:42:08,067 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:42:08" (1/1) ... [2023-09-01 06:42:08,100 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 90 [2023-09-01 06:42:08,100 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 06:42:08,101 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 06:42:08,101 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 06:42:08,102 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 06:42:08,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:42:08" (1/1) ... [2023-09-01 06:42:08,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:42:08" (1/1) ... [2023-09-01 06:42:08,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:42:08" (1/1) ... [2023-09-01 06:42:08,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:42:08" (1/1) ... [2023-09-01 06:42:08,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:42:08" (1/1) ... [2023-09-01 06:42:08,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:42:08" (1/1) ... [2023-09-01 06:42:08,136 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:42:08" (1/1) ... [2023-09-01 06:42:08,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:42:08" (1/1) ... [2023-09-01 06:42:08,139 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 06:42:08,139 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 06:42:08,139 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 06:42:08,140 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 06:42:08,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:42:08" (1/1) ... [2023-09-01 06:42:08,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:42:08,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:42:08,170 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 06:42:08,174 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 06:42:08,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 06:42:08,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 06:42:08,197 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 06:42:08,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 06:42:08,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 06:42:08,197 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 06:42:08,197 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 06:42:08,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 06:42:08,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 06:42:08,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 06:42:08,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 06:42:08,199 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 06:42:08,346 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 06:42:08,349 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 06:42:08,502 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 06:42:08,510 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 06:42:08,511 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-09-01 06:42:08,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:42:08 BoogieIcfgContainer [2023-09-01 06:42:08,513 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 06:42:08,515 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 06:42:08,516 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 06:42:08,518 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 06:42:08,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 06:42:07" (1/3) ... [2023-09-01 06:42:08,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227367c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:42:08, skipping insertion in model container [2023-09-01 06:42:08,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:42:08" (2/3) ... [2023-09-01 06:42:08,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227367c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:42:08, skipping insertion in model container [2023-09-01 06:42:08,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:42:08" (3/3) ... [2023-09-01 06:42:08,520 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_24-sound_lock_racing.i [2023-09-01 06:42:08,526 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 06:42:08,532 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 06:42:08,532 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-09-01 06:42:08,532 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 06:42:08,601 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 06:42:08,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 129 transitions, 266 flow [2023-09-01 06:42:08,686 INFO L130 PetriNetUnfolder]: 18/161 cut-off events. [2023-09-01 06:42:08,687 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 06:42:08,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 161 events. 18/161 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 335 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 77. Up to 4 conditions per place. [2023-09-01 06:42:08,696 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 129 transitions, 266 flow [2023-09-01 06:42:08,699 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 120 transitions, 245 flow [2023-09-01 06:42:08,701 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:42:08,707 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 111 places, 120 transitions, 245 flow [2023-09-01 06:42:08,709 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 111 places, 120 transitions, 245 flow [2023-09-01 06:42:08,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 120 transitions, 245 flow [2023-09-01 06:42:08,734 INFO L130 PetriNetUnfolder]: 17/152 cut-off events. [2023-09-01 06:42:08,734 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:42:08,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 152 events. 17/152 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 318 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 77. Up to 4 conditions per place. [2023-09-01 06:42:08,744 INFO L119 LiptonReduction]: Number of co-enabled transitions 3024 [2023-09-01 06:42:12,092 INFO L134 LiptonReduction]: Checked pairs total: 4889 [2023-09-01 06:42:12,092 INFO L136 LiptonReduction]: Total number of compositions: 111 [2023-09-01 06:42:12,102 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:42:12,106 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;@5febd239, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:42:12,107 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:42:12,110 INFO L130 PetriNetUnfolder]: 2/24 cut-off events. [2023-09-01 06:42:12,111 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:42:12,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:42:12,111 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 06:42:12,111 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:42:12,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:42:12,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1664071286, now seen corresponding path program 1 times [2023-09-01 06:42:12,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:42:12,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997475180] [2023-09-01 06:42:12,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:42:12,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:42:12,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:42:12,200 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:42:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:42:12,263 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:42:12,264 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:42:12,265 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:42:12,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 06:42:12,273 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:42:12,279 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:42:12,279 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:42:12,279 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 06:42:12,298 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 06:42:12,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 167 transitions, 352 flow [2023-09-01 06:42:12,328 INFO L130 PetriNetUnfolder]: 32/267 cut-off events. [2023-09-01 06:42:12,328 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 06:42:12,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 267 events. 32/267 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 731 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 163. Up to 8 conditions per place. [2023-09-01 06:42:12,330 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 167 transitions, 352 flow [2023-09-01 06:42:12,331 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 152 places, 167 transitions, 352 flow [2023-09-01 06:42:12,331 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:42:12,331 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 152 places, 167 transitions, 352 flow [2023-09-01 06:42:12,332 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 152 places, 167 transitions, 352 flow [2023-09-01 06:42:12,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 167 transitions, 352 flow [2023-09-01 06:42:12,353 INFO L130 PetriNetUnfolder]: 32/267 cut-off events. [2023-09-01 06:42:12,353 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 06:42:12,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 267 events. 32/267 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 731 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 163. Up to 8 conditions per place. [2023-09-01 06:42:12,359 INFO L119 LiptonReduction]: Number of co-enabled transitions 10008 [2023-09-01 06:42:15,583 INFO L134 LiptonReduction]: Checked pairs total: 23455 [2023-09-01 06:42:15,583 INFO L136 LiptonReduction]: Total number of compositions: 135 [2023-09-01 06:42:15,585 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:42:15,586 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;@5febd239, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:42:15,586 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:42:15,590 INFO L130 PetriNetUnfolder]: 10/62 cut-off events. [2023-09-01 06:42:15,591 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 06:42:15,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:42:15,591 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 06:42:15,592 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:42:15,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:42:15,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1875782604, now seen corresponding path program 1 times [2023-09-01 06:42:15,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:42:15,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209355295] [2023-09-01 06:42:15,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:42:15,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:42:15,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:42:15,633 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:42:15,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:42:15,662 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:42:15,662 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:42:15,663 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:42:15,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 06:42:15,663 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:42:15,664 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:42:15,664 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:42:15,664 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 06:42:15,690 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 06:42:15,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 205 transitions, 440 flow [2023-09-01 06:42:15,737 INFO L130 PetriNetUnfolder]: 51/412 cut-off events. [2023-09-01 06:42:15,738 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 06:42:15,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 440 conditions, 412 events. 51/412 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1313 event pairs, 1 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 275. Up to 16 conditions per place. [2023-09-01 06:42:15,743 INFO L82 GeneralOperation]: Start removeDead. Operand has 185 places, 205 transitions, 440 flow [2023-09-01 06:42:15,746 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 185 places, 205 transitions, 440 flow [2023-09-01 06:42:15,746 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:42:15,746 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 185 places, 205 transitions, 440 flow [2023-09-01 06:42:15,746 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 185 places, 205 transitions, 440 flow [2023-09-01 06:42:15,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 205 transitions, 440 flow [2023-09-01 06:42:15,783 INFO L130 PetriNetUnfolder]: 51/412 cut-off events. [2023-09-01 06:42:15,784 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 06:42:15,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 440 conditions, 412 events. 51/412 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1313 event pairs, 1 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 275. Up to 16 conditions per place. [2023-09-01 06:42:15,801 INFO L119 LiptonReduction]: Number of co-enabled transitions 19224 [2023-09-01 06:42:19,100 INFO L134 LiptonReduction]: Checked pairs total: 55445 [2023-09-01 06:42:19,101 INFO L136 LiptonReduction]: Total number of compositions: 161 [2023-09-01 06:42:19,102 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:42:19,103 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;@5febd239, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:42:19,103 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:42:19,110 INFO L130 PetriNetUnfolder]: 22/108 cut-off events. [2023-09-01 06:42:19,111 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 06:42:19,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:42:19,111 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 06:42:19,115 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:42:19,116 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:42:19,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1020674438, now seen corresponding path program 1 times [2023-09-01 06:42:19,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:42:19,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744141823] [2023-09-01 06:42:19,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:42:19,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:42:19,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:42:19,168 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:42:19,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:42:19,188 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:42:19,191 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:42:19,191 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:42:19,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 06:42:19,191 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:42:19,192 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:42:19,192 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:42:19,192 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 06:42:19,207 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 06:42:19,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 243 transitions, 530 flow [2023-09-01 06:42:19,315 INFO L130 PetriNetUnfolder]: 82/637 cut-off events. [2023-09-01 06:42:19,316 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 06:42:19,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 692 conditions, 637 events. 82/637 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2413 event pairs, 6 based on Foata normal form. 0/501 useless extension candidates. Maximal degree in co-relation 432. Up to 32 conditions per place. [2023-09-01 06:42:19,326 INFO L82 GeneralOperation]: Start removeDead. Operand has 218 places, 243 transitions, 530 flow [2023-09-01 06:42:19,331 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 218 places, 243 transitions, 530 flow [2023-09-01 06:42:19,331 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:42:19,331 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 218 places, 243 transitions, 530 flow [2023-09-01 06:42:19,332 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 218 places, 243 transitions, 530 flow [2023-09-01 06:42:19,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 243 transitions, 530 flow [2023-09-01 06:42:19,412 INFO L130 PetriNetUnfolder]: 82/637 cut-off events. [2023-09-01 06:42:19,413 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 06:42:19,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 692 conditions, 637 events. 82/637 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2413 event pairs, 6 based on Foata normal form. 0/501 useless extension candidates. Maximal degree in co-relation 432. Up to 32 conditions per place. [2023-09-01 06:42:19,440 INFO L119 LiptonReduction]: Number of co-enabled transitions 31248 [2023-09-01 06:42:22,961 INFO L134 LiptonReduction]: Checked pairs total: 86312 [2023-09-01 06:42:22,962 INFO L136 LiptonReduction]: Total number of compositions: 185 [2023-09-01 06:42:22,965 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:42:22,966 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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;@5febd239, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:42:22,966 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:42:22,976 INFO L130 PetriNetUnfolder]: 33/163 cut-off events. [2023-09-01 06:42:22,976 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-09-01 06:42:22,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:42:22,977 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 06:42:22,978 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:42:22,979 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:42:22,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1186716299, now seen corresponding path program 1 times [2023-09-01 06:42:22,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:42:22,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073528233] [2023-09-01 06:42:22,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:42:22,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:42:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:42:23,025 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:42:23,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:42:23,044 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:42:23,045 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:42:23,045 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:42:23,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 06:42:23,045 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:42:23,046 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:42:23,046 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:42:23,046 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 06:42:23,067 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 06:42:23,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 251 places, 281 transitions, 622 flow [2023-09-01 06:42:23,217 INFO L130 PetriNetUnfolder]: 141/1026 cut-off events. [2023-09-01 06:42:23,217 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 06:42:23,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1137 conditions, 1026 events. 141/1026 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4689 event pairs, 23 based on Foata normal form. 0/809 useless extension candidates. Maximal degree in co-relation 682. Up to 80 conditions per place. [2023-09-01 06:42:23,224 INFO L82 GeneralOperation]: Start removeDead. Operand has 251 places, 281 transitions, 622 flow [2023-09-01 06:42:23,229 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 251 places, 281 transitions, 622 flow [2023-09-01 06:42:23,230 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:42:23,230 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 251 places, 281 transitions, 622 flow [2023-09-01 06:42:23,230 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 251 places, 281 transitions, 622 flow [2023-09-01 06:42:23,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 251 places, 281 transitions, 622 flow [2023-09-01 06:42:23,362 INFO L130 PetriNetUnfolder]: 141/1026 cut-off events. [2023-09-01 06:42:23,363 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 06:42:23,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1137 conditions, 1026 events. 141/1026 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4689 event pairs, 23 based on Foata normal form. 0/809 useless extension candidates. Maximal degree in co-relation 682. Up to 80 conditions per place. [2023-09-01 06:42:23,417 INFO L119 LiptonReduction]: Number of co-enabled transitions 46080 [2023-09-01 06:42:27,073 INFO L134 LiptonReduction]: Checked pairs total: 148297 [2023-09-01 06:42:27,073 INFO L136 LiptonReduction]: Total number of compositions: 211 [2023-09-01 06:42:27,076 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:42:27,077 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;@5febd239, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:42:27,077 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:42:27,089 INFO L130 PetriNetUnfolder]: 41/213 cut-off events. [2023-09-01 06:42:27,090 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-09-01 06:42:27,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:42:27,090 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:42:27,090 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:42:27,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:42:27,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1017461538, now seen corresponding path program 1 times [2023-09-01 06:42:27,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:42:27,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715255682] [2023-09-01 06:42:27,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:42:27,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:42:27,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:42:27,128 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:42:27,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:42:27,156 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:42:27,157 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:42:27,157 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:42:27,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 06:42:27,157 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:42:27,158 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:42:27,158 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:42:27,158 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 06:42:27,180 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 06:42:27,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 284 places, 319 transitions, 716 flow [2023-09-01 06:42:27,398 INFO L130 PetriNetUnfolder]: 264/1751 cut-off events. [2023-09-01 06:42:27,398 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 06:42:27,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1983 conditions, 1751 events. 264/1751 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 9897 event pairs, 72 based on Foata normal form. 0/1389 useless extension candidates. Maximal degree in co-relation 1125. Up to 192 conditions per place. [2023-09-01 06:42:27,416 INFO L82 GeneralOperation]: Start removeDead. Operand has 284 places, 319 transitions, 716 flow [2023-09-01 06:42:27,429 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 284 places, 319 transitions, 716 flow [2023-09-01 06:42:27,432 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:42:27,432 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 284 places, 319 transitions, 716 flow [2023-09-01 06:42:27,433 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 284 places, 319 transitions, 716 flow [2023-09-01 06:42:27,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 284 places, 319 transitions, 716 flow [2023-09-01 06:42:27,657 INFO L130 PetriNetUnfolder]: 264/1751 cut-off events. [2023-09-01 06:42:27,658 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 06:42:27,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1983 conditions, 1751 events. 264/1751 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 9897 event pairs, 72 based on Foata normal form. 0/1389 useless extension candidates. Maximal degree in co-relation 1125. Up to 192 conditions per place. [2023-09-01 06:42:27,771 INFO L119 LiptonReduction]: Number of co-enabled transitions 63720 [2023-09-01 06:42:31,488 INFO L134 LiptonReduction]: Checked pairs total: 211609 [2023-09-01 06:42:31,489 INFO L136 LiptonReduction]: Total number of compositions: 234 [2023-09-01 06:42:31,490 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:42:31,490 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;@5febd239, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:42:31,490 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:42:31,509 INFO L130 PetriNetUnfolder]: 62/300 cut-off events. [2023-09-01 06:42:31,509 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-09-01 06:42:31,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:42:31,510 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:42:31,510 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:42:31,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:42:31,510 INFO L85 PathProgramCache]: Analyzing trace with hash -271231329, now seen corresponding path program 1 times [2023-09-01 06:42:31,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:42:31,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002166997] [2023-09-01 06:42:31,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:42:31,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:42:31,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:42:31,538 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:42:31,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:42:31,571 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:42:31,571 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:42:31,572 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:42:31,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 06:42:31,572 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:42:31,575 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:42:31,575 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:42:31,575 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 06:42:31,596 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 06:42:31,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 317 places, 357 transitions, 812 flow [2023-09-01 06:42:32,107 INFO L130 PetriNetUnfolder]: 531/3164 cut-off events. [2023-09-01 06:42:32,107 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 06:42:32,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3662 conditions, 3164 events. 531/3164 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 22025 event pairs, 201 based on Foata normal form. 0/2529 useless extension candidates. Maximal degree in co-relation 1969. Up to 448 conditions per place. [2023-09-01 06:42:32,134 INFO L82 GeneralOperation]: Start removeDead. Operand has 317 places, 357 transitions, 812 flow [2023-09-01 06:42:32,151 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 317 places, 357 transitions, 812 flow [2023-09-01 06:42:32,152 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:42:32,152 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 317 places, 357 transitions, 812 flow [2023-09-01 06:42:32,152 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 317 places, 357 transitions, 812 flow [2023-09-01 06:42:32,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 317 places, 357 transitions, 812 flow [2023-09-01 06:42:32,646 INFO L130 PetriNetUnfolder]: 531/3164 cut-off events. [2023-09-01 06:42:32,646 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 06:42:32,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3662 conditions, 3164 events. 531/3164 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 22025 event pairs, 201 based on Foata normal form. 0/2529 useless extension candidates. Maximal degree in co-relation 1969. Up to 448 conditions per place. [2023-09-01 06:42:32,794 INFO L119 LiptonReduction]: Number of co-enabled transitions 84168 [2023-09-01 06:42:36,875 INFO L134 LiptonReduction]: Checked pairs total: 280295 [2023-09-01 06:42:36,876 INFO L136 LiptonReduction]: Total number of compositions: 262 [2023-09-01 06:42:36,877 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:42:36,877 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5febd239, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:42:36,877 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:42:36,903 INFO L130 PetriNetUnfolder]: 76/385 cut-off events. [2023-09-01 06:42:36,903 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-09-01 06:42:36,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:42:36,903 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:42:36,904 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:42:36,904 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:42:36,904 INFO L85 PathProgramCache]: Analyzing trace with hash 796082297, now seen corresponding path program 1 times [2023-09-01 06:42:36,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:42:36,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772832009] [2023-09-01 06:42:36,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:42:36,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:42:36,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:42:36,920 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:42:36,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:42:36,952 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:42:36,953 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:42:36,953 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:42:36,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 06:42:36,953 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:42:36,954 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:42:36,954 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:42:36,954 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 06:42:36,974 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 06:42:36,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 350 places, 395 transitions, 910 flow [2023-09-01 06:42:38,030 INFO L130 PetriNetUnfolder]: 1118/5985 cut-off events. [2023-09-01 06:42:38,031 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 06:42:38,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7070 conditions, 5985 events. 1118/5985 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 49480 event pairs, 522 based on Foata normal form. 0/4821 useless extension candidates. Maximal degree in co-relation 3646. Up to 1024 conditions per place. [2023-09-01 06:42:38,109 INFO L82 GeneralOperation]: Start removeDead. Operand has 350 places, 395 transitions, 910 flow [2023-09-01 06:42:38,151 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 350 places, 395 transitions, 910 flow [2023-09-01 06:42:38,151 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:42:38,151 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 350 places, 395 transitions, 910 flow [2023-09-01 06:42:38,151 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 350 places, 395 transitions, 910 flow [2023-09-01 06:42:38,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 350 places, 395 transitions, 910 flow [2023-09-01 06:42:39,230 INFO L130 PetriNetUnfolder]: 1118/5985 cut-off events. [2023-09-01 06:42:39,230 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 06:42:39,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7070 conditions, 5985 events. 1118/5985 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 49480 event pairs, 522 based on Foata normal form. 0/4821 useless extension candidates. Maximal degree in co-relation 3646. Up to 1024 conditions per place. [2023-09-01 06:42:39,485 INFO L119 LiptonReduction]: Number of co-enabled transitions 107424 [2023-09-01 06:42:44,162 INFO L134 LiptonReduction]: Checked pairs total: 364042 [2023-09-01 06:42:44,162 INFO L136 LiptonReduction]: Total number of compositions: 289 [2023-09-01 06:42:44,163 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:42:44,163 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;@5febd239, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:42:44,163 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:42:44,198 INFO L130 PetriNetUnfolder]: 105/519 cut-off events. [2023-09-01 06:42:44,198 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-09-01 06:42:44,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:42:44,199 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:42:44,199 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:42:44,199 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:42:44,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1645645248, now seen corresponding path program 1 times [2023-09-01 06:42:44,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:42:44,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067030882] [2023-09-01 06:42:44,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:42:44,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:42:44,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:42:44,214 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:42:44,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:42:44,227 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:42:44,227 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:42:44,227 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:42:44,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 06:42:44,228 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:42:44,229 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:42:44,229 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:42:44,231 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 06:42:44,262 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 06:42:44,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 383 places, 433 transitions, 1010 flow [2023-09-01 06:42:46,489 INFO L130 PetriNetUnfolder]: 2409/11686 cut-off events. [2023-09-01 06:42:46,489 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 06:42:46,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14063 conditions, 11686 events. 2409/11686 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 113442 event pairs, 1291 based on Foata normal form. 0/9481 useless extension candidates. Maximal degree in co-relation 7052. Up to 2304 conditions per place. [2023-09-01 06:42:46,669 INFO L82 GeneralOperation]: Start removeDead. Operand has 383 places, 433 transitions, 1010 flow [2023-09-01 06:42:46,917 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 383 places, 433 transitions, 1010 flow [2023-09-01 06:42:46,917 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:42:46,917 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 383 places, 433 transitions, 1010 flow [2023-09-01 06:42:46,918 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 383 places, 433 transitions, 1010 flow [2023-09-01 06:42:46,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 383 places, 433 transitions, 1010 flow [2023-09-01 06:42:49,297 INFO L130 PetriNetUnfolder]: 2409/11686 cut-off events. [2023-09-01 06:42:49,297 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 06:42:49,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14063 conditions, 11686 events. 2409/11686 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 113442 event pairs, 1291 based on Foata normal form. 0/9481 useless extension candidates. Maximal degree in co-relation 7052. Up to 2304 conditions per place. [2023-09-01 06:42:49,891 INFO L119 LiptonReduction]: Number of co-enabled transitions 133488 [2023-09-01 06:42:54,405 INFO L134 LiptonReduction]: Checked pairs total: 459839 [2023-09-01 06:42:54,405 INFO L136 LiptonReduction]: Total number of compositions: 310 [2023-09-01 06:42:54,406 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:42:54,406 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;@5febd239, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:42:54,407 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:42:54,462 INFO L130 PetriNetUnfolder]: 150/711 cut-off events. [2023-09-01 06:42:54,462 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-09-01 06:42:54,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:42:54,463 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:42:54,463 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:42:54,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:42:54,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1215549688, now seen corresponding path program 1 times [2023-09-01 06:42:54,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:42:54,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006100494] [2023-09-01 06:42:54,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:42:54,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:42:54,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:42:54,486 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:42:54,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:42:54,504 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:42:54,504 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:42:54,504 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:42:54,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 06:42:54,505 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:42:54,506 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:42:54,507 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:42:54,507 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 06:42:54,527 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 06:42:54,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 416 places, 471 transitions, 1112 flow [2023-09-01 06:43:00,233 INFO L130 PetriNetUnfolder]: 5236/23275 cut-off events. [2023-09-01 06:43:00,233 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 06:43:00,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28481 conditions, 23275 events. 5236/23275 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 255942 event pairs, 3084 based on Foata normal form. 0/19005 useless extension candidates. Maximal degree in co-relation 14043. Up to 5120 conditions per place. [2023-09-01 06:43:00,563 INFO L82 GeneralOperation]: Start removeDead. Operand has 416 places, 471 transitions, 1112 flow [2023-09-01 06:43:00,762 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 416 places, 471 transitions, 1112 flow [2023-09-01 06:43:00,762 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:43:00,763 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 416 places, 471 transitions, 1112 flow [2023-09-01 06:43:00,763 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 416 places, 471 transitions, 1112 flow [2023-09-01 06:43:00,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 416 places, 471 transitions, 1112 flow [2023-09-01 06:43:06,139 INFO L130 PetriNetUnfolder]: 5236/23275 cut-off events. [2023-09-01 06:43:06,139 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 06:43:06,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28481 conditions, 23275 events. 5236/23275 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 255942 event pairs, 3084 based on Foata normal form. 0/19005 useless extension candidates. Maximal degree in co-relation 14043. Up to 5120 conditions per place. [2023-09-01 06:43:07,586 INFO L119 LiptonReduction]: Number of co-enabled transitions 162360 [2023-09-01 06:43:12,069 INFO L134 LiptonReduction]: Checked pairs total: 505520 [2023-09-01 06:43:12,069 INFO L136 LiptonReduction]: Total number of compositions: 337 [2023-09-01 06:43:12,070 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:43:12,071 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;@5febd239, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:43:12,071 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:43:12,151 INFO L130 PetriNetUnfolder]: 224/996 cut-off events. [2023-09-01 06:43:12,151 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-09-01 06:43:12,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:43:12,152 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:43:12,152 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:43:12,152 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:43:12,152 INFO L85 PathProgramCache]: Analyzing trace with hash 831909657, now seen corresponding path program 1 times [2023-09-01 06:43:12,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:43:12,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936810167] [2023-09-01 06:43:12,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:43:12,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:43:12,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:43:12,180 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:43:12,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:43:12,197 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:43:12,197 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:43:12,198 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:43:12,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 06:43:12,198 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:43:12,199 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:43:12,199 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:43:12,199 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 06:43:12,221 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 06:43:12,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 449 places, 509 transitions, 1216 flow [2023-09-01 06:43:23,989 INFO L130 PetriNetUnfolder]: 11391/46896 cut-off events. [2023-09-01 06:43:23,989 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 06:43:24,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58260 conditions, 46896 events. 11391/46896 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 574099 event pairs, 7181 based on Foata normal form. 0/38513 useless extension candidates. Maximal degree in co-relation 28459. Up to 11264 conditions per place. [2023-09-01 06:43:24,757 INFO L82 GeneralOperation]: Start removeDead. Operand has 449 places, 509 transitions, 1216 flow [2023-09-01 06:43:25,376 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 449 places, 509 transitions, 1216 flow [2023-09-01 06:43:25,376 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:43:25,376 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 449 places, 509 transitions, 1216 flow [2023-09-01 06:43:25,376 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 449 places, 509 transitions, 1216 flow [2023-09-01 06:43:25,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 449 places, 509 transitions, 1216 flow [2023-09-01 06:43:37,288 INFO L130 PetriNetUnfolder]: 11391/46896 cut-off events. [2023-09-01 06:43:37,289 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 06:43:38,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58260 conditions, 46896 events. 11391/46896 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 574099 event pairs, 7181 based on Foata normal form. 0/38513 useless extension candidates. Maximal degree in co-relation 28459. Up to 11264 conditions per place. [2023-09-01 06:43:40,671 INFO L119 LiptonReduction]: Number of co-enabled transitions 194040 [2023-09-01 06:43:45,578 INFO L134 LiptonReduction]: Checked pairs total: 604249 [2023-09-01 06:43:45,578 INFO L136 LiptonReduction]: Total number of compositions: 358 [2023-09-01 06:43:45,579 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:43:45,580 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;@5febd239, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:43:45,580 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:43:45,709 INFO L130 PetriNetUnfolder]: 360/1453 cut-off events. [2023-09-01 06:43:45,709 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-09-01 06:43:45,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:43:45,710 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:43:45,710 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:43:45,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:43:45,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1007710235, now seen corresponding path program 1 times [2023-09-01 06:43:45,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:43:45,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062410744] [2023-09-01 06:43:45,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:43:45,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:43:45,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:43:45,734 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:43:45,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:43:45,755 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:43:45,756 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:43:45,756 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:43:45,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 06:43:45,756 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:43:45,757 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:43:45,757 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:43:45,757 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 06:43:45,782 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 06:43:45,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 482 places, 547 transitions, 1322 flow [2023-09-01 06:44:13,288 INFO L130 PetriNetUnfolder]: 24714/95093 cut-off events. [2023-09-01 06:44:13,288 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 06:44:16,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119784 conditions, 95093 events. 24714/95093 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1488. Compared 1277409 event pairs, 16398 based on Foata normal form. 0/78501 useless extension candidates. Maximal degree in co-relation 58236. Up to 24576 conditions per place. [2023-09-01 06:44:16,938 INFO L82 GeneralOperation]: Start removeDead. Operand has 482 places, 547 transitions, 1322 flow [2023-09-01 06:44:18,378 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 482 places, 547 transitions, 1322 flow [2023-09-01 06:44:18,378 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:44:18,378 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 482 places, 547 transitions, 1322 flow [2023-09-01 06:44:18,379 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 482 places, 547 transitions, 1322 flow [2023-09-01 06:44:18,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 482 places, 547 transitions, 1322 flow [2023-09-01 06:44:44,103 INFO L130 PetriNetUnfolder]: 24714/95093 cut-off events. [2023-09-01 06:44:44,103 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 06:44:47,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119784 conditions, 95093 events. 24714/95093 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1488. Compared 1277409 event pairs, 16398 based on Foata normal form. 0/78501 useless extension candidates. Maximal degree in co-relation 58236. Up to 24576 conditions per place. [2023-09-01 06:44:53,426 INFO L119 LiptonReduction]: Number of co-enabled transitions 228528 [2023-09-01 06:44:58,360 INFO L134 LiptonReduction]: Checked pairs total: 720393 [2023-09-01 06:44:58,360 INFO L136 LiptonReduction]: Total number of compositions: 388 [2023-09-01 06:44:58,362 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:44:58,362 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5febd239, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:44:58,362 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:44:58,570 INFO L130 PetriNetUnfolder]: 572/2126 cut-off events. [2023-09-01 06:44:58,570 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-09-01 06:44:58,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:44:58,571 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 06:44:58,571 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:44:58,571 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:44:58,571 INFO L85 PathProgramCache]: Analyzing trace with hash -702759732, now seen corresponding path program 1 times [2023-09-01 06:44:58,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:44:58,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318391986] [2023-09-01 06:44:58,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:44:58,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:44:58,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:44:58,607 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:44:58,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:44:58,625 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:44:58,626 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:44:58,626 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:44:58,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 06:44:58,626 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:44:58,627 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:44:58,627 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:44:58,628 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 06:44:58,661 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 06:44:58,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 515 places, 585 transitions, 1430 flow [2023-09-01 06:45:58,413 INFO L130 PetriNetUnfolder]: 53397/193466 cut-off events. [2023-09-01 06:45:58,413 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 06:46:08,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246845 conditions, 193466 events. 53397/193466 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2891. Compared 2840413 event pairs, 36879 based on Foata normal form. 0/160473 useless extension candidates. Maximal degree in co-relation 119758. Up to 53248 conditions per place. [2023-09-01 06:46:08,194 INFO L82 GeneralOperation]: Start removeDead. Operand has 515 places, 585 transitions, 1430 flow [2023-09-01 06:46:12,425 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 515 places, 585 transitions, 1430 flow [2023-09-01 06:46:12,426 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:46:12,426 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 515 places, 585 transitions, 1430 flow [2023-09-01 06:46:12,426 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 515 places, 585 transitions, 1430 flow [2023-09-01 06:46:12,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 515 places, 585 transitions, 1430 flow [2023-09-01 06:47:10,873 INFO L130 PetriNetUnfolder]: 53397/193466 cut-off events. [2023-09-01 06:47:10,873 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 06:47:19,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246845 conditions, 193466 events. 53397/193466 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2891. Compared 2840413 event pairs, 36879 based on Foata normal form. 0/160473 useless extension candidates. Maximal degree in co-relation 119758. Up to 53248 conditions per place. [2023-09-01 06:47:43,910 INFO L119 LiptonReduction]: Number of co-enabled transitions 265824 [2023-09-01 06:47:49,301 INFO L134 LiptonReduction]: Checked pairs total: 829816 [2023-09-01 06:47:49,301 INFO L136 LiptonReduction]: Total number of compositions: 407 [2023-09-01 06:47:49,302 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:47:49,302 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;@5febd239, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:47:49,303 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:47:49,621 INFO L130 PetriNetUnfolder]: 913/3145 cut-off events. [2023-09-01 06:47:49,621 INFO L131 PetriNetUnfolder]: For 1672/1672 co-relation queries the response was YES. [2023-09-01 06:47:49,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:47:49,622 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 06:47:49,622 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:47:49,622 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:47:49,622 INFO L85 PathProgramCache]: Analyzing trace with hash 2081205865, now seen corresponding path program 1 times [2023-09-01 06:47:49,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:47:49,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074990835] [2023-09-01 06:47:49,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:47:49,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:47:49,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:47:49,641 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:47:49,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:47:49,662 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:47:49,662 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:47:49,662 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:47:49,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 06:47:49,663 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:47:49,663 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:47:49,663 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:47:49,663 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-09-01 06:47:49,690 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-09-01 06:47:49,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 548 places, 623 transitions, 1540 flow