./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_82-list_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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_82-list_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6ac894f5c6207d1329786eb676509b79ca36f8c33f880cc59ffa30652ab92765 --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 11:12:45,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 11:12:45,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 11:12:45,963 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 11:12:45,965 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 11:12:45,968 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 11:12:45,971 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 11:12:45,973 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 11:12:45,975 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 11:12:45,979 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 11:12:45,979 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 11:12:45,981 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 11:12:45,981 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 11:12:45,983 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 11:12:45,985 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 11:12:45,989 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 11:12:45,990 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 11:12:45,991 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 11:12:45,993 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 11:12:45,996 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 11:12:45,998 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 11:12:45,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 11:12:45,999 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 11:12:46,000 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 11:12:46,006 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 11:12:46,006 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 11:12:46,006 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 11:12:46,008 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 11:12:46,009 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 11:12:46,009 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 11:12:46,009 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 11:12:46,014 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 11:12:46,015 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 11:12:46,016 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 11:12:46,017 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 11:12:46,017 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 11:12:46,017 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 11:12:46,018 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 11:12:46,018 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 11:12:46,018 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 11:12:46,019 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 11:12:46,020 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 11:12:46,042 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 11:12:46,042 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 11:12:46,042 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 11:12:46,042 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 11:12:46,043 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 11:12:46,043 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 11:12:46,043 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 11:12:46,044 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 11:12:46,044 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 11:12:46,044 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 11:12:46,044 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 11:12:46,044 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 11:12:46,044 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 11:12:46,044 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 11:12:46,044 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 11:12:46,045 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 11:12:46,045 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 11:12:46,045 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 11:12:46,045 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 11:12:46,045 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 11:12:46,045 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 11:12:46,045 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 11:12:46,045 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 11:12:46,045 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 11:12:46,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 11:12:46,046 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 11:12:46,046 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 11:12:46,046 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 11:12:46,046 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 11:12:46,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 11:12:46,046 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 11:12:46,046 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 11:12:46,047 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 11:12:46,047 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 11:12:46,047 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 11:12:46,047 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ac894f5c6207d1329786eb676509b79ca36f8c33f880cc59ffa30652ab92765 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 11:12:46,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 11:12:46,372 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 11:12:46,374 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 11:12:46,376 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 11:12:46,376 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 11:12:46,377 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_82-list_racefree.i [2023-09-01 11:12:47,604 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 11:12:47,903 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 11:12:47,904 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_82-list_racefree.i [2023-09-01 11:12:47,921 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f93034371/7eab7be12ae348e191d3f9c64a78a37b/FLAGd83a3980e [2023-09-01 11:12:47,932 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f93034371/7eab7be12ae348e191d3f9c64a78a37b [2023-09-01 11:12:47,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 11:12:47,935 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 11:12:47,945 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 11:12:47,945 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 11:12:47,948 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 11:12:47,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 11:12:47" (1/1) ... [2023-09-01 11:12:47,949 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@400741fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:12:47, skipping insertion in model container [2023-09-01 11:12:47,953 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 11:12:47" (1/1) ... [2023-09-01 11:12:47,958 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 11:12:47,994 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 11:12:48,260 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_82-list_racefree.i[47038,47051] [2023-09-01 11:12:48,295 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 11:12:48,306 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 11:12:48,347 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_82-list_racefree.i[47038,47051] [2023-09-01 11:12:48,357 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 11:12:48,407 INFO L208 MainTranslator]: Completed translation [2023-09-01 11:12:48,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:12:48 WrapperNode [2023-09-01 11:12:48,407 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 11:12:48,408 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 11:12:48,408 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 11:12:48,408 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 11:12:48,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:12:48" (1/1) ... [2023-09-01 11:12:48,429 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:12:48" (1/1) ... [2023-09-01 11:12:48,449 INFO L138 Inliner]: procedures = 278, calls = 61, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 208 [2023-09-01 11:12:48,450 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 11:12:48,450 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 11:12:48,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 11:12:48,452 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 11:12:48,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:12:48" (1/1) ... [2023-09-01 11:12:48,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:12:48" (1/1) ... [2023-09-01 11:12:48,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:12:48" (1/1) ... [2023-09-01 11:12:48,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:12:48" (1/1) ... [2023-09-01 11:12:48,480 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:12:48" (1/1) ... [2023-09-01 11:12:48,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:12:48" (1/1) ... [2023-09-01 11:12:48,486 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:12:48" (1/1) ... [2023-09-01 11:12:48,487 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:12:48" (1/1) ... [2023-09-01 11:12:48,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 11:12:48,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 11:12:48,491 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 11:12:48,491 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 11:12:48,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:12:48" (1/1) ... [2023-09-01 11:12:48,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 11:12:48,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 11:12:48,525 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 11:12:48,532 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 11:12:48,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 11:12:48,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-09-01 11:12:48,557 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-09-01 11:12:48,568 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-09-01 11:12:48,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 11:12:48,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 11:12:48,569 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-09-01 11:12:48,569 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-09-01 11:12:48,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 11:12:48,569 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 11:12:48,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 11:12:48,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 11:12:48,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-09-01 11:12:48,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 11:12:48,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 11:12:48,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 11:12:48,572 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 11:12:48,735 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 11:12:48,737 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 11:12:49,042 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 11:12:49,053 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 11:12:49,056 INFO L302 CfgBuilder]: Removed 15 assume(true) statements. [2023-09-01 11:12:49,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 11:12:49 BoogieIcfgContainer [2023-09-01 11:12:49,058 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 11:12:49,059 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 11:12:49,059 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 11:12:49,062 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 11:12:49,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 11:12:47" (1/3) ... [2023-09-01 11:12:49,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6adb7e65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 11:12:49, skipping insertion in model container [2023-09-01 11:12:49,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:12:48" (2/3) ... [2023-09-01 11:12:49,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6adb7e65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 11:12:49, skipping insertion in model container [2023-09-01 11:12:49,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 11:12:49" (3/3) ... [2023-09-01 11:12:49,064 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_82-list_racefree.i [2023-09-01 11:12:49,069 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 11:12:49,079 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 11:12:49,080 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 11:12:49,080 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 11:12:49,205 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 11:12:49,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 210 transitions, 442 flow [2023-09-01 11:12:49,373 INFO L130 PetriNetUnfolder]: 52/402 cut-off events. [2023-09-01 11:12:49,373 INFO L131 PetriNetUnfolder]: For 8/15 co-relation queries the response was YES. [2023-09-01 11:12:49,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 422 conditions, 402 events. 52/402 cut-off events. For 8/15 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1594 event pairs, 0 based on Foata normal form. 0/341 useless extension candidates. Maximal degree in co-relation 206. Up to 8 conditions per place. [2023-09-01 11:12:49,382 INFO L82 GeneralOperation]: Start removeDead. Operand has 192 places, 210 transitions, 442 flow [2023-09-01 11:12:49,391 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 192 places, 208 transitions, 432 flow [2023-09-01 11:12:49,393 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:12:49,410 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 192 places, 208 transitions, 432 flow [2023-09-01 11:12:49,413 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 192 places, 208 transitions, 432 flow [2023-09-01 11:12:49,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 208 transitions, 432 flow [2023-09-01 11:12:49,460 INFO L130 PetriNetUnfolder]: 48/390 cut-off events. [2023-09-01 11:12:49,460 INFO L131 PetriNetUnfolder]: For 4/7 co-relation queries the response was YES. [2023-09-01 11:12:49,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 406 conditions, 390 events. 48/390 cut-off events. For 4/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1511 event pairs, 0 based on Foata normal form. 0/329 useless extension candidates. Maximal degree in co-relation 194. Up to 8 conditions per place. [2023-09-01 11:12:49,469 INFO L119 LiptonReduction]: Number of co-enabled transitions 12936 [2023-09-01 11:12:55,630 INFO L134 LiptonReduction]: Checked pairs total: 23205 [2023-09-01 11:12:55,630 INFO L136 LiptonReduction]: Total number of compositions: 167 [2023-09-01 11:12:55,651 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:12:55,656 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;@42a43b7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:12:55,656 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 11:12:55,660 INFO L130 PetriNetUnfolder]: 0/19 cut-off events. [2023-09-01 11:12:55,660 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 11:12:55,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:12:55,661 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 11:12:55,661 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:12:55,665 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:12:55,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1373220507, now seen corresponding path program 1 times [2023-09-01 11:12:55,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:12:55,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139171965] [2023-09-01 11:12:55,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:12:55,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:12:55,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:12:55,809 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:12:55,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:12:55,853 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:12:55,854 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:12:55,855 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 11:12:55,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 11:12:55,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 11:12:55,857 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:12:55,859 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 11:12:55,860 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:12:55,860 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 11:12:55,956 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 11:12:55,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 294 places, 327 transitions, 702 flow [2023-09-01 11:12:56,227 INFO L130 PetriNetUnfolder]: 191/1195 cut-off events. [2023-09-01 11:12:56,227 INFO L131 PetriNetUnfolder]: For 72/107 co-relation queries the response was YES. [2023-09-01 11:12:56,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1292 conditions, 1195 events. 191/1195 cut-off events. For 72/107 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7367 event pairs, 2 based on Foata normal form. 0/1005 useless extension candidates. Maximal degree in co-relation 755. Up to 32 conditions per place. [2023-09-01 11:12:56,239 INFO L82 GeneralOperation]: Start removeDead. Operand has 294 places, 327 transitions, 702 flow [2023-09-01 11:12:56,248 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 294 places, 327 transitions, 702 flow [2023-09-01 11:12:56,248 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:12:56,248 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 294 places, 327 transitions, 702 flow [2023-09-01 11:12:56,248 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 294 places, 327 transitions, 702 flow [2023-09-01 11:12:56,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 294 places, 327 transitions, 702 flow [2023-09-01 11:12:56,465 INFO L130 PetriNetUnfolder]: 191/1195 cut-off events. [2023-09-01 11:12:56,465 INFO L131 PetriNetUnfolder]: For 72/107 co-relation queries the response was YES. [2023-09-01 11:12:56,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1292 conditions, 1195 events. 191/1195 cut-off events. For 72/107 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7367 event pairs, 2 based on Foata normal form. 0/1005 useless extension candidates. Maximal degree in co-relation 755. Up to 32 conditions per place. [2023-09-01 11:12:56,549 INFO L119 LiptonReduction]: Number of co-enabled transitions 53524 [2023-09-01 11:13:03,457 INFO L134 LiptonReduction]: Checked pairs total: 118633 [2023-09-01 11:13:03,458 INFO L136 LiptonReduction]: Total number of compositions: 248 [2023-09-01 11:13:03,461 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:13:03,467 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;@42a43b7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:13:03,468 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 11:13:03,480 INFO L130 PetriNetUnfolder]: 11/84 cut-off events. [2023-09-01 11:13:03,480 INFO L131 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2023-09-01 11:13:03,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:13:03,481 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 11:13:03,481 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:13:03,482 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:13:03,482 INFO L85 PathProgramCache]: Analyzing trace with hash 503193650, now seen corresponding path program 1 times [2023-09-01 11:13:03,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:13:03,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092678595] [2023-09-01 11:13:03,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:13:03,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:13:03,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:13:03,547 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:13:03,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:13:03,582 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:13:03,582 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:13:03,582 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 11:13:03,583 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 11:13:03,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 11:13:03,583 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:13:03,583 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 11:13:03,583 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:13:03,583 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 11:13:03,626 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 11:13:03,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 396 places, 444 transitions, 966 flow [2023-09-01 11:13:04,320 INFO L130 PetriNetUnfolder]: 664/3318 cut-off events. [2023-09-01 11:13:04,321 INFO L131 PetriNetUnfolder]: For 419/494 co-relation queries the response was YES. [2023-09-01 11:13:04,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3769 conditions, 3318 events. 664/3318 cut-off events. For 419/494 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 25435 event pairs, 32 based on Foata normal form. 0/2817 useless extension candidates. Maximal degree in co-relation 2178. Up to 192 conditions per place. [2023-09-01 11:13:04,370 INFO L82 GeneralOperation]: Start removeDead. Operand has 396 places, 444 transitions, 966 flow [2023-09-01 11:13:04,397 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 396 places, 444 transitions, 966 flow [2023-09-01 11:13:04,397 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:13:04,397 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 396 places, 444 transitions, 966 flow [2023-09-01 11:13:04,398 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 396 places, 444 transitions, 966 flow [2023-09-01 11:13:04,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 396 places, 444 transitions, 966 flow [2023-09-01 11:13:05,059 INFO L130 PetriNetUnfolder]: 664/3318 cut-off events. [2023-09-01 11:13:05,059 INFO L131 PetriNetUnfolder]: For 419/494 co-relation queries the response was YES. [2023-09-01 11:13:05,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3769 conditions, 3318 events. 664/3318 cut-off events. For 419/494 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 25435 event pairs, 32 based on Foata normal form. 0/2817 useless extension candidates. Maximal degree in co-relation 2178. Up to 192 conditions per place. [2023-09-01 11:13:05,260 INFO L119 LiptonReduction]: Number of co-enabled transitions 120384 [2023-09-01 11:13:12,940 INFO L134 LiptonReduction]: Checked pairs total: 270596 [2023-09-01 11:13:12,940 INFO L136 LiptonReduction]: Total number of compositions: 331 [2023-09-01 11:13:12,942 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:13:12,945 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@42a43b7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:13:12,947 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 11:13:12,965 INFO L130 PetriNetUnfolder]: 38/194 cut-off events. [2023-09-01 11:13:12,966 INFO L131 PetriNetUnfolder]: For 26/33 co-relation queries the response was YES. [2023-09-01 11:13:12,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:13:12,966 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 11:13:12,966 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:13:12,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:13:12,967 INFO L85 PathProgramCache]: Analyzing trace with hash -154263034, now seen corresponding path program 1 times [2023-09-01 11:13:12,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:13:12,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173657660] [2023-09-01 11:13:12,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:13:12,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:13:13,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:13:13,013 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:13:13,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:13:13,034 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:13:13,034 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:13:13,035 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 11:13:13,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 11:13:13,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 11:13:13,035 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:13:13,036 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 11:13:13,036 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:13:13,036 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 11:13:13,091 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2023-09-01 11:13:13,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 498 places, 561 transitions, 1234 flow [2023-09-01 11:13:16,252 INFO L130 PetriNetUnfolder]: 2659/10443 cut-off events. [2023-09-01 11:13:16,253 INFO L131 PetriNetUnfolder]: For 2144/2256 co-relation queries the response was YES. [2023-09-01 11:13:16,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12608 conditions, 10443 events. 2659/10443 cut-off events. For 2144/2256 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 94951 event pairs, 626 based on Foata normal form. 0/9017 useless extension candidates. Maximal degree in co-relation 6746. Up to 1024 conditions per place. [2023-09-01 11:13:16,651 INFO L82 GeneralOperation]: Start removeDead. Operand has 498 places, 561 transitions, 1234 flow [2023-09-01 11:13:16,795 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 498 places, 561 transitions, 1234 flow [2023-09-01 11:13:16,795 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:13:16,795 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 498 places, 561 transitions, 1234 flow [2023-09-01 11:13:16,796 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 498 places, 561 transitions, 1234 flow [2023-09-01 11:13:16,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 498 places, 561 transitions, 1234 flow [2023-09-01 11:13:20,084 INFO L130 PetriNetUnfolder]: 2659/10443 cut-off events. [2023-09-01 11:13:20,085 INFO L131 PetriNetUnfolder]: For 2144/2256 co-relation queries the response was YES. [2023-09-01 11:13:20,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12608 conditions, 10443 events. 2659/10443 cut-off events. For 2144/2256 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 94951 event pairs, 626 based on Foata normal form. 0/9017 useless extension candidates. Maximal degree in co-relation 6746. Up to 1024 conditions per place. [2023-09-01 11:13:21,332 INFO L119 LiptonReduction]: Number of co-enabled transitions 213976 [2023-09-01 11:13:29,837 INFO L134 LiptonReduction]: Checked pairs total: 534930 [2023-09-01 11:13:29,837 INFO L136 LiptonReduction]: Total number of compositions: 419 [2023-09-01 11:13:29,838 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:13:29,839 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;@42a43b7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:13:29,840 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 11:13:29,883 INFO L130 PetriNetUnfolder]: 89/397 cut-off events. [2023-09-01 11:13:29,884 INFO L131 PetriNetUnfolder]: For 85/100 co-relation queries the response was YES. [2023-09-01 11:13:29,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:13:29,885 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 11:13:29,885 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:13:29,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:13:29,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1700671372, now seen corresponding path program 1 times [2023-09-01 11:13:29,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:13:29,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795528846] [2023-09-01 11:13:29,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:13:29,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:13:29,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:13:29,935 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:13:29,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:13:29,964 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:13:29,967 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:13:29,967 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 11:13:29,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 11:13:29,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 11:13:29,968 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:13:29,968 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 11:13:29,968 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:13:29,968 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 11:13:30,020 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2023-09-01 11:13:30,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 600 places, 678 transitions, 1506 flow [2023-09-01 11:13:43,923 INFO L130 PetriNetUnfolder]: 11792/38122 cut-off events. [2023-09-01 11:13:43,923 INFO L131 PetriNetUnfolder]: For 10450/10605 co-relation queries the response was YES. [2023-09-01 11:13:46,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48548 conditions, 38122 events. 11792/38122 cut-off events. For 10450/10605 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 411920 event pairs, 3924 based on Foata normal form. 0/33429 useless extension candidates. Maximal degree in co-relation 24398. Up to 5120 conditions per place. [2023-09-01 11:13:46,023 INFO L82 GeneralOperation]: Start removeDead. Operand has 600 places, 678 transitions, 1506 flow [2023-09-01 11:13:46,634 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 600 places, 678 transitions, 1506 flow [2023-09-01 11:13:46,634 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:13:46,634 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 600 places, 678 transitions, 1506 flow [2023-09-01 11:13:46,635 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 600 places, 678 transitions, 1506 flow [2023-09-01 11:13:46,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 600 places, 678 transitions, 1506 flow [2023-09-01 11:14:00,262 INFO L130 PetriNetUnfolder]: 11792/38122 cut-off events. [2023-09-01 11:14:00,262 INFO L131 PetriNetUnfolder]: For 10450/10605 co-relation queries the response was YES. [2023-09-01 11:14:02,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48548 conditions, 38122 events. 11792/38122 cut-off events. For 10450/10605 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 411920 event pairs, 3924 based on Foata normal form. 0/33429 useless extension candidates. Maximal degree in co-relation 24398. Up to 5120 conditions per place. [2023-09-01 11:14:05,813 INFO L119 LiptonReduction]: Number of co-enabled transitions 334300 [2023-09-01 11:14:15,146 INFO L134 LiptonReduction]: Checked pairs total: 839658 [2023-09-01 11:14:15,146 INFO L136 LiptonReduction]: Total number of compositions: 509 [2023-09-01 11:14:15,161 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:14:15,161 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;@42a43b7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:14:15,176 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 11:14:15,216 INFO L130 PetriNetUnfolder]: 146/598 cut-off events. [2023-09-01 11:14:15,216 INFO L131 PetriNetUnfolder]: For 145/167 co-relation queries the response was YES. [2023-09-01 11:14:15,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:14:15,217 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:14:15,217 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:14:15,217 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:14:15,217 INFO L85 PathProgramCache]: Analyzing trace with hash 918619205, now seen corresponding path program 1 times [2023-09-01 11:14:15,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:14:15,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711975434] [2023-09-01 11:14:15,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:14:15,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:14:15,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:14:15,265 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:14:15,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:14:15,293 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:14:15,296 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:14:15,296 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 11:14:15,296 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 11:14:15,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 11:14:15,297 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:14:15,297 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 11:14:15,297 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:14:15,300 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 11:14:15,360 INFO L144 ThreadInstanceAdder]: Constructed 24 joinOtherThreadTransitions. [2023-09-01 11:14:15,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 702 places, 795 transitions, 1782 flow [2023-09-01 11:15:24,447 INFO L130 PetriNetUnfolder]: 53983/152019 cut-off events. [2023-09-01 11:15:24,448 INFO L131 PetriNetUnfolder]: For 49552/49756 co-relation queries the response was YES. [2023-09-01 11:15:39,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201448 conditions, 152019 events. 53983/152019 cut-off events. For 49552/49756 co-relation queries the response was YES. Maximal size of possible extension queue 1910. Compared 1921997 event pairs, 24930 based on Foata normal form. 0/134805 useless extension candidates. Maximal degree in co-relation 98337. Up to 24576 conditions per place. [2023-09-01 11:15:39,981 INFO L82 GeneralOperation]: Start removeDead. Operand has 702 places, 795 transitions, 1782 flow [2023-09-01 11:15:45,587 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 702 places, 795 transitions, 1782 flow [2023-09-01 11:15:45,587 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:15:45,588 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 702 places, 795 transitions, 1782 flow [2023-09-01 11:15:45,588 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 702 places, 795 transitions, 1782 flow [2023-09-01 11:15:45,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 702 places, 795 transitions, 1782 flow [2023-09-01 11:16:58,024 INFO L130 PetriNetUnfolder]: 53983/152019 cut-off events. [2023-09-01 11:16:58,024 INFO L131 PetriNetUnfolder]: For 49552/49756 co-relation queries the response was YES. [2023-09-01 11:17:10,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201448 conditions, 152019 events. 53983/152019 cut-off events. For 49552/49756 co-relation queries the response was YES. Maximal size of possible extension queue 1910. Compared 1921997 event pairs, 24930 based on Foata normal form. 0/134805 useless extension candidates. Maximal degree in co-relation 98337. Up to 24576 conditions per place. [2023-09-01 11:17:28,810 INFO L119 LiptonReduction]: Number of co-enabled transitions 481356 [2023-09-01 11:17:37,302 INFO L134 LiptonReduction]: Checked pairs total: 1122024 [2023-09-01 11:17:37,302 INFO L136 LiptonReduction]: Total number of compositions: 592 [2023-09-01 11:17:37,306 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:17:37,306 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;@42a43b7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:17:37,306 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 11:17:37,371 INFO L130 PetriNetUnfolder]: 266/1009 cut-off events. [2023-09-01 11:17:37,371 INFO L131 PetriNetUnfolder]: For 324/355 co-relation queries the response was YES. [2023-09-01 11:17:37,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:17:37,371 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:17:37,373 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:17:37,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:17:37,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1005346603, now seen corresponding path program 1 times [2023-09-01 11:17:37,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:17:37,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91770689] [2023-09-01 11:17:37,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:17:37,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:17:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:17:37,406 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:17:37,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:17:37,431 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:17:37,431 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:17:37,431 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 11:17:37,431 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 11:17:37,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 11:17:37,432 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:17:37,433 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 11:17:37,433 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:17:37,433 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 11:17:37,528 INFO L144 ThreadInstanceAdder]: Constructed 28 joinOtherThreadTransitions. [2023-09-01 11:17:37,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 804 places, 912 transitions, 2062 flow