./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_03-munge_racing.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_03-munge_racing.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 7df5d4e763d99c6ca9aa3d4daa03dcc5b8b9d65829db9a89ff85ebe5a14f3ac3 --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 10:44:06,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 10:44:06,267 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 10:44:06,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 10:44:06,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 10:44:06,295 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 10:44:06,296 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 10:44:06,298 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 10:44:06,299 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 10:44:06,299 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 10:44:06,300 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 10:44:06,300 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 10:44:06,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 10:44:06,301 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 10:44:06,302 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 10:44:06,303 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 10:44:06,303 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 10:44:06,304 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 10:44:06,305 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 10:44:06,306 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 10:44:06,306 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 10:44:06,309 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 10:44:06,310 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 10:44:06,311 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 10:44:06,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 10:44:06,318 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 10:44:06,318 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 10:44:06,318 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 10:44:06,319 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 10:44:06,319 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 10:44:06,319 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 10:44:06,320 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 10:44:06,320 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 10:44:06,321 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 10:44:06,321 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 10:44:06,322 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 10:44:06,322 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 10:44:06,322 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 10:44:06,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 10:44:06,323 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 10:44:06,323 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 10:44:06,324 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 10:44:06,341 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 10:44:06,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 10:44:06,343 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 10:44:06,343 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 10:44:06,344 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 10:44:06,344 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 10:44:06,344 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 10:44:06,345 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 10:44:06,345 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 10:44:06,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 10:44:06,346 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 10:44:06,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 10:44:06,346 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 10:44:06,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 10:44:06,346 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 10:44:06,346 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 10:44:06,347 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 10:44:06,347 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 10:44:06,347 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 10:44:06,347 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 10:44:06,347 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 10:44:06,347 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 10:44:06,347 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 10:44:06,348 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 10:44:06,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 10:44:06,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 10:44:06,348 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 10:44:06,348 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 10:44:06,348 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 10:44:06,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 10:44:06,349 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 10:44:06,349 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 10:44:06,349 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 10:44:06,349 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 10:44:06,349 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 10:44:06,349 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7df5d4e763d99c6ca9aa3d4daa03dcc5b8b9d65829db9a89ff85ebe5a14f3ac3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 10:44:06,598 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 10:44:06,623 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 10:44:06,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 10:44:06,626 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 10:44:06,626 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 10:44:06,627 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_03-munge_racing.i [2023-09-01 10:44:07,677 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 10:44:07,915 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 10:44:07,915 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_03-munge_racing.i [2023-09-01 10:44:07,928 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8133a3652/d34d6b226ee2493ebbf30daddf18f83e/FLAG3ab35ff31 [2023-09-01 10:44:07,947 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8133a3652/d34d6b226ee2493ebbf30daddf18f83e [2023-09-01 10:44:07,954 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 10:44:07,955 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 10:44:07,958 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 10:44:07,958 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 10:44:07,961 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 10:44:07,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 10:44:07" (1/1) ... [2023-09-01 10:44:07,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fcfb254 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:07, skipping insertion in model container [2023-09-01 10:44:07,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 10:44:07" (1/1) ... [2023-09-01 10:44:07,971 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 10:44:08,018 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 10:44:08,284 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_03-munge_racing.i[30176,30189] [2023-09-01 10:44:08,305 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 10:44:08,321 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 10:44:08,400 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_03-munge_racing.i[30176,30189] [2023-09-01 10:44:08,408 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 10:44:08,443 INFO L208 MainTranslator]: Completed translation [2023-09-01 10:44:08,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:08 WrapperNode [2023-09-01 10:44:08,444 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 10:44:08,445 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 10:44:08,445 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 10:44:08,445 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 10:44:08,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:08" (1/1) ... [2023-09-01 10:44:08,472 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:08" (1/1) ... [2023-09-01 10:44:08,496 INFO L138 Inliner]: procedures = 172, calls = 43, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 201 [2023-09-01 10:44:08,496 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 10:44:08,497 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 10:44:08,497 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 10:44:08,498 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 10:44:08,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:08" (1/1) ... [2023-09-01 10:44:08,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:08" (1/1) ... [2023-09-01 10:44:08,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:08" (1/1) ... [2023-09-01 10:44:08,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:08" (1/1) ... [2023-09-01 10:44:08,524 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:08" (1/1) ... [2023-09-01 10:44:08,535 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:08" (1/1) ... [2023-09-01 10:44:08,537 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:08" (1/1) ... [2023-09-01 10:44:08,541 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:08" (1/1) ... [2023-09-01 10:44:08,543 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 10:44:08,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 10:44:08,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 10:44:08,547 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 10:44:08,548 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:08" (1/1) ... [2023-09-01 10:44:08,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 10:44:08,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 10:44:08,572 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 10:44:08,582 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 10:44:08,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 10:44:08,601 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-09-01 10:44:08,602 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-09-01 10:44:08,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 10:44:08,602 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 10:44:08,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 10:44:08,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 10:44:08,602 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-09-01 10:44:08,602 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-09-01 10:44:08,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 10:44:08,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 10:44:08,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 10:44:08,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 10:44:08,604 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 10:44:08,722 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 10:44:08,724 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 10:44:08,960 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 10:44:08,966 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 10:44:08,969 INFO L302 CfgBuilder]: Removed 24 assume(true) statements. [2023-09-01 10:44:08,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 10:44:08 BoogieIcfgContainer [2023-09-01 10:44:08,972 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 10:44:08,973 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 10:44:08,973 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 10:44:08,975 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 10:44:08,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 10:44:07" (1/3) ... [2023-09-01 10:44:08,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49eb2432 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 10:44:08, skipping insertion in model container [2023-09-01 10:44:08,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:08" (2/3) ... [2023-09-01 10:44:08,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49eb2432 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 10:44:08, skipping insertion in model container [2023-09-01 10:44:08,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 10:44:08" (3/3) ... [2023-09-01 10:44:08,978 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_03-munge_racing.i [2023-09-01 10:44:08,982 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 10:44:08,989 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 10:44:08,989 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-09-01 10:44:08,989 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 10:44:09,088 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 10:44:09,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 198 transitions, 418 flow [2023-09-01 10:44:09,231 INFO L130 PetriNetUnfolder]: 58/356 cut-off events. [2023-09-01 10:44:09,234 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-09-01 10:44:09,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 376 conditions, 356 events. 58/356 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1472 event pairs, 0 based on Foata normal form. 0/289 useless extension candidates. Maximal degree in co-relation 189. Up to 8 conditions per place. [2023-09-01 10:44:09,247 INFO L82 GeneralOperation]: Start removeDead. Operand has 171 places, 198 transitions, 418 flow [2023-09-01 10:44:09,259 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 171 places, 198 transitions, 418 flow [2023-09-01 10:44:09,262 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:44:09,277 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 171 places, 198 transitions, 418 flow [2023-09-01 10:44:09,279 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 171 places, 198 transitions, 418 flow [2023-09-01 10:44:09,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 198 transitions, 418 flow [2023-09-01 10:44:09,335 INFO L130 PetriNetUnfolder]: 58/356 cut-off events. [2023-09-01 10:44:09,335 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-09-01 10:44:09,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 376 conditions, 356 events. 58/356 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1472 event pairs, 0 based on Foata normal form. 0/289 useless extension candidates. Maximal degree in co-relation 189. Up to 8 conditions per place. [2023-09-01 10:44:09,346 INFO L119 LiptonReduction]: Number of co-enabled transitions 15876 [2023-09-01 10:44:12,780 INFO L134 LiptonReduction]: Checked pairs total: 30997 [2023-09-01 10:44:12,780 INFO L136 LiptonReduction]: Total number of compositions: 140 [2023-09-01 10:44:12,789 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:44:12,793 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;@59f1d8fe, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:44:12,793 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 10:44:12,796 INFO L130 PetriNetUnfolder]: 1/21 cut-off events. [2023-09-01 10:44:12,796 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 10:44:12,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:44:12,797 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 10:44:12,797 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:44:12,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:44:12,800 INFO L85 PathProgramCache]: Analyzing trace with hash -2102750666, now seen corresponding path program 1 times [2023-09-01 10:44:12,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:44:12,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138443340] [2023-09-01 10:44:12,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:44:12,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:44:12,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:12,936 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:44:12,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:12,972 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:44:12,973 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:44:12,974 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 10:44:12,975 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 10:44:12,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 10:44:12,976 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:44:12,978 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 10:44:12,979 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:44:12,979 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 10:44:13,045 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 10:44:13,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 312 transitions, 672 flow [2023-09-01 10:44:13,224 INFO L130 PetriNetUnfolder]: 197/1044 cut-off events. [2023-09-01 10:44:13,225 INFO L131 PetriNetUnfolder]: For 72/75 co-relation queries the response was YES. [2023-09-01 10:44:13,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1141 conditions, 1044 events. 197/1044 cut-off events. For 72/75 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 6019 event pairs, 1 based on Foata normal form. 0/852 useless extension candidates. Maximal degree in co-relation 645. Up to 32 conditions per place. [2023-09-01 10:44:13,238 INFO L82 GeneralOperation]: Start removeDead. Operand has 261 places, 312 transitions, 672 flow [2023-09-01 10:44:13,249 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 261 places, 312 transitions, 672 flow [2023-09-01 10:44:13,249 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:44:13,249 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 261 places, 312 transitions, 672 flow [2023-09-01 10:44:13,250 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 261 places, 312 transitions, 672 flow [2023-09-01 10:44:13,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 312 transitions, 672 flow [2023-09-01 10:44:13,414 INFO L130 PetriNetUnfolder]: 197/1044 cut-off events. [2023-09-01 10:44:13,415 INFO L131 PetriNetUnfolder]: For 72/75 co-relation queries the response was YES. [2023-09-01 10:44:13,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1141 conditions, 1044 events. 197/1044 cut-off events. For 72/75 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 6019 event pairs, 1 based on Foata normal form. 0/852 useless extension candidates. Maximal degree in co-relation 645. Up to 32 conditions per place. [2023-09-01 10:44:13,467 INFO L119 LiptonReduction]: Number of co-enabled transitions 57240 [2023-09-01 10:44:16,890 INFO L134 LiptonReduction]: Checked pairs total: 122272 [2023-09-01 10:44:16,890 INFO L136 LiptonReduction]: Total number of compositions: 209 [2023-09-01 10:44:16,892 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:44:16,892 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;@59f1d8fe, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:44:16,892 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 10:44:16,902 INFO L130 PetriNetUnfolder]: 28/119 cut-off events. [2023-09-01 10:44:16,904 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-09-01 10:44:16,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:44:16,905 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 10:44:16,905 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:44:16,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:44:16,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1506749400, now seen corresponding path program 1 times [2023-09-01 10:44:16,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:44:16,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772582431] [2023-09-01 10:44:16,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:44:16,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:44:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:16,933 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:44:16,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:16,952 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:44:16,952 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:44:16,953 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 10:44:16,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 10:44:16,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 10:44:16,953 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:44:16,954 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 10:44:16,954 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:44:16,954 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 10:44:16,992 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 10:44:16,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 351 places, 426 transitions, 930 flow [2023-09-01 10:44:17,651 INFO L130 PetriNetUnfolder]: 664/2994 cut-off events. [2023-09-01 10:44:17,651 INFO L131 PetriNetUnfolder]: For 419/431 co-relation queries the response was YES. [2023-09-01 10:44:17,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3445 conditions, 2994 events. 664/2994 cut-off events. For 419/431 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 21390 event pairs, 32 based on Foata normal form. 0/2503 useless extension candidates. Maximal degree in co-relation 1922. Up to 192 conditions per place. [2023-09-01 10:44:17,680 INFO L82 GeneralOperation]: Start removeDead. Operand has 351 places, 426 transitions, 930 flow [2023-09-01 10:44:17,705 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 351 places, 426 transitions, 930 flow [2023-09-01 10:44:17,705 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:44:17,706 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 351 places, 426 transitions, 930 flow [2023-09-01 10:44:17,706 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 351 places, 426 transitions, 930 flow [2023-09-01 10:44:17,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 351 places, 426 transitions, 930 flow [2023-09-01 10:44:18,382 INFO L130 PetriNetUnfolder]: 664/2994 cut-off events. [2023-09-01 10:44:18,383 INFO L131 PetriNetUnfolder]: For 419/431 co-relation queries the response was YES. [2023-09-01 10:44:18,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3445 conditions, 2994 events. 664/2994 cut-off events. For 419/431 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 21390 event pairs, 32 based on Foata normal form. 0/2503 useless extension candidates. Maximal degree in co-relation 1922. Up to 192 conditions per place. [2023-09-01 10:44:18,592 INFO L119 LiptonReduction]: Number of co-enabled transitions 124092 [2023-09-01 10:44:22,897 INFO L134 LiptonReduction]: Checked pairs total: 277996 [2023-09-01 10:44:22,897 INFO L136 LiptonReduction]: Total number of compositions: 276 [2023-09-01 10:44:22,899 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:44:22,900 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;@59f1d8fe, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:44:22,900 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 10:44:22,915 INFO L130 PetriNetUnfolder]: 65/246 cut-off events. [2023-09-01 10:44:22,916 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2023-09-01 10:44:22,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:44:22,916 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 10:44:22,916 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:44:22,917 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:44:22,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1946457780, now seen corresponding path program 1 times [2023-09-01 10:44:22,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:44:22,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281760567] [2023-09-01 10:44:22,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:44:22,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:44:22,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:22,948 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:44:22,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:22,973 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:44:22,974 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:44:22,974 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 10:44:22,975 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 10:44:22,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 10:44:22,975 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:44:22,975 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 10:44:22,976 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:44:22,976 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 10:44:23,010 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2023-09-01 10:44:23,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 441 places, 540 transitions, 1192 flow [2023-09-01 10:44:25,197 INFO L130 PetriNetUnfolder]: 2647/9878 cut-off events. [2023-09-01 10:44:25,197 INFO L131 PetriNetUnfolder]: For 2144/2159 co-relation queries the response was YES. [2023-09-01 10:44:25,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12043 conditions, 9878 events. 2647/9878 cut-off events. For 2144/2159 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 86952 event pairs, 313 based on Foata normal form. 0/8482 useless extension candidates. Maximal degree in co-relation 6273. Up to 1024 conditions per place. [2023-09-01 10:44:25,449 INFO L82 GeneralOperation]: Start removeDead. Operand has 441 places, 540 transitions, 1192 flow [2023-09-01 10:44:25,584 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 441 places, 540 transitions, 1192 flow [2023-09-01 10:44:25,585 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:44:25,585 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 441 places, 540 transitions, 1192 flow [2023-09-01 10:44:25,585 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 441 places, 540 transitions, 1192 flow [2023-09-01 10:44:25,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 441 places, 540 transitions, 1192 flow [2023-09-01 10:44:27,608 INFO L130 PetriNetUnfolder]: 2647/9878 cut-off events. [2023-09-01 10:44:27,608 INFO L131 PetriNetUnfolder]: For 2144/2159 co-relation queries the response was YES. [2023-09-01 10:44:27,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12043 conditions, 9878 events. 2647/9878 cut-off events. For 2144/2159 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 86952 event pairs, 313 based on Foata normal form. 0/8482 useless extension candidates. Maximal degree in co-relation 6273. Up to 1024 conditions per place. [2023-09-01 10:44:28,391 INFO L119 LiptonReduction]: Number of co-enabled transitions 216432 [2023-09-01 10:44:33,142 INFO L134 LiptonReduction]: Checked pairs total: 498247 [2023-09-01 10:44:33,142 INFO L136 LiptonReduction]: Total number of compositions: 347 [2023-09-01 10:44:33,144 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:44:33,148 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;@59f1d8fe, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:44:33,149 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 10:44:33,172 INFO L130 PetriNetUnfolder]: 141/497 cut-off events. [2023-09-01 10:44:33,172 INFO L131 PetriNetUnfolder]: For 91/91 co-relation queries the response was YES. [2023-09-01 10:44:33,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:44:33,172 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 10:44:33,173 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:44:33,173 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:44:33,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1646597577, now seen corresponding path program 1 times [2023-09-01 10:44:33,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:44:33,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600018106] [2023-09-01 10:44:33,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:44:33,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:44:33,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:33,193 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:44:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:33,212 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:44:33,213 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:44:33,213 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 10:44:33,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 10:44:33,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 10:44:33,213 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:44:33,214 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 10:44:33,214 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:44:33,214 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 10:44:33,255 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2023-09-01 10:44:33,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 531 places, 654 transitions, 1458 flow [2023-09-01 10:44:43,922 INFO L130 PetriNetUnfolder]: 11762/37248 cut-off events. [2023-09-01 10:44:43,922 INFO L131 PetriNetUnfolder]: For 10450/10468 co-relation queries the response was YES. [2023-09-01 10:44:44,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47674 conditions, 37248 events. 11762/37248 cut-off events. For 10450/10468 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 399854 event pairs, 2148 based on Foata normal form. 0/32613 useless extension candidates. Maximal degree in co-relation 23645. Up to 5120 conditions per place. [2023-09-01 10:44:44,800 INFO L82 GeneralOperation]: Start removeDead. Operand has 531 places, 654 transitions, 1458 flow [2023-09-01 10:44:45,589 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 531 places, 654 transitions, 1458 flow [2023-09-01 10:44:45,590 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:44:45,590 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 531 places, 654 transitions, 1458 flow [2023-09-01 10:44:45,590 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 531 places, 654 transitions, 1458 flow [2023-09-01 10:44:45,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 531 places, 654 transitions, 1458 flow [2023-09-01 10:44:55,693 INFO L130 PetriNetUnfolder]: 11762/37248 cut-off events. [2023-09-01 10:44:55,693 INFO L131 PetriNetUnfolder]: For 10450/10468 co-relation queries the response was YES. [2023-09-01 10:44:56,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47674 conditions, 37248 events. 11762/37248 cut-off events. For 10450/10468 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 399854 event pairs, 2148 based on Foata normal form. 0/32613 useless extension candidates. Maximal degree in co-relation 23645. Up to 5120 conditions per place. [2023-09-01 10:44:59,195 INFO L119 LiptonReduction]: Number of co-enabled transitions 334260 [2023-09-01 10:45:04,294 INFO L134 LiptonReduction]: Checked pairs total: 791125 [2023-09-01 10:45:04,295 INFO L136 LiptonReduction]: Total number of compositions: 416 [2023-09-01 10:45:04,296 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:45:04,297 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;@59f1d8fe, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:45:04,297 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 10:45:04,353 INFO L130 PetriNetUnfolder]: 225/773 cut-off events. [2023-09-01 10:45:04,353 INFO L131 PetriNetUnfolder]: For 167/167 co-relation queries the response was YES. [2023-09-01 10:45:04,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:45:04,354 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:45:04,354 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:45:04,354 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:45:04,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1723365914, now seen corresponding path program 1 times [2023-09-01 10:45:04,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:45:04,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861422547] [2023-09-01 10:45:04,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:45:04,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:45:04,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:45:04,400 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:45:04,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:45:04,426 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:45:04,426 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:45:04,426 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 10:45:04,426 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 10:45:04,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 10:45:04,427 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:45:04,427 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 10:45:04,427 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:45:04,427 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 10:45:04,469 INFO L144 ThreadInstanceAdder]: Constructed 24 joinOtherThreadTransitions. [2023-09-01 10:45:04,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 621 places, 768 transitions, 1728 flow [2023-09-01 10:46:03,024 INFO L130 PetriNetUnfolder]: 53929/150768 cut-off events. [2023-09-01 10:46:03,024 INFO L131 PetriNetUnfolder]: For 49552/49573 co-relation queries the response was YES. [2023-09-01 10:46:10,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200197 conditions, 150768 events. 53929/150768 cut-off events. For 49552/49573 co-relation queries the response was YES. Maximal size of possible extension queue 1866. Compared 1913768 event pairs, 12465 based on Foata normal form. 0/133648 useless extension candidates. Maximal degree in co-relation 97243. Up to 24576 conditions per place. [2023-09-01 10:46:10,989 INFO L82 GeneralOperation]: Start removeDead. Operand has 621 places, 768 transitions, 1728 flow [2023-09-01 10:46:15,906 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 621 places, 768 transitions, 1728 flow [2023-09-01 10:46:15,907 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:46:15,907 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 621 places, 768 transitions, 1728 flow [2023-09-01 10:46:15,907 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 621 places, 768 transitions, 1728 flow [2023-09-01 10:46:15,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 621 places, 768 transitions, 1728 flow [2023-09-01 10:47:08,088 INFO L130 PetriNetUnfolder]: 53929/150768 cut-off events. [2023-09-01 10:47:08,089 INFO L131 PetriNetUnfolder]: For 49552/49573 co-relation queries the response was YES. [2023-09-01 10:47:16,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200197 conditions, 150768 events. 53929/150768 cut-off events. For 49552/49573 co-relation queries the response was YES. Maximal size of possible extension queue 1866. Compared 1913768 event pairs, 12465 based on Foata normal form. 0/133648 useless extension candidates. Maximal degree in co-relation 97243. Up to 24576 conditions per place. [2023-09-01 10:47:33,500 INFO L119 LiptonReduction]: Number of co-enabled transitions 477576 [2023-09-01 10:47:39,434 INFO L134 LiptonReduction]: Checked pairs total: 1138993 [2023-09-01 10:47:39,434 INFO L136 LiptonReduction]: Total number of compositions: 489 [2023-09-01 10:47:39,436 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:47:39,436 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;@59f1d8fe, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:47:39,436 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 10:47:39,514 INFO L130 PetriNetUnfolder]: 357/1182 cut-off events. [2023-09-01 10:47:39,515 INFO L131 PetriNetUnfolder]: For 342/342 co-relation queries the response was YES. [2023-09-01 10:47:39,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:47:39,515 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:47:39,515 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:47:39,515 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:47:39,515 INFO L85 PathProgramCache]: Analyzing trace with hash 181207630, now seen corresponding path program 1 times [2023-09-01 10:47:39,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:47:39,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37188906] [2023-09-01 10:47:39,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:47:39,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:47:39,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:47:39,560 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:47:39,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:47:39,582 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:47:39,582 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:47:39,582 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-09-01 10:47:39,582 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 10:47:39,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 10:47:39,582 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:47:39,583 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-09-01 10:47:39,583 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:47:39,583 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 10:47:39,631 INFO L144 ThreadInstanceAdder]: Constructed 28 joinOtherThreadTransitions. [2023-09-01 10:47:39,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 711 places, 882 transitions, 2002 flow