./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_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_60-invariant_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 ca8ac8d2a0a0bfcebfb7f99229747142c166641dd0f1bf091ac2b4ae67e9ee75 --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 11:06:31,414 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 11:06:31,416 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 11:06:31,460 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 11:06:31,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 11:06:31,464 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 11:06:31,466 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 11:06:31,468 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 11:06:31,470 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 11:06:31,475 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 11:06:31,475 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 11:06:31,478 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 11:06:31,478 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 11:06:31,480 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 11:06:31,481 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 11:06:31,486 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 11:06:31,487 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 11:06:31,488 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 11:06:31,490 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 11:06:31,494 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 11:06:31,496 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 11:06:31,496 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 11:06:31,497 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 11:06:31,498 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 11:06:31,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 11:06:31,505 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 11:06:31,505 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 11:06:31,507 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 11:06:31,507 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 11:06:31,508 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 11:06:31,509 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 11:06:31,510 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 11:06:31,512 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 11:06:31,512 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 11:06:31,513 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 11:06:31,514 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 11:06:31,514 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 11:06:31,514 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 11:06:31,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 11:06:31,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 11:06:31,516 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 11:06:31,518 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 11:06:31,561 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 11:06:31,561 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 11:06:31,562 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 11:06:31,563 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 11:06:31,563 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 11:06:31,564 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 11:06:31,564 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 11:06:31,564 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 11:06:31,564 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 11:06:31,565 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 11:06:31,565 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 11:06:31,566 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 11:06:31,566 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 11:06:31,566 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 11:06:31,566 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 11:06:31,566 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 11:06:31,567 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 11:06:31,567 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 11:06:31,567 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 11:06:31,567 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 11:06:31,567 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 11:06:31,567 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 11:06:31,568 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 11:06:31,568 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 11:06:31,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 11:06:31,568 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 11:06:31,568 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 11:06:31,569 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 11:06:31,569 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 11:06:31,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 11:06:31,569 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 11:06:31,569 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 11:06:31,570 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 11:06:31,570 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 11:06:31,570 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 11:06:31,570 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca8ac8d2a0a0bfcebfb7f99229747142c166641dd0f1bf091ac2b4ae67e9ee75 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 11:06:31,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 11:06:31,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 11:06:31,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 11:06:31,905 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 11:06:31,906 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 11:06:31,908 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i [2023-09-01 11:06:33,165 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 11:06:33,431 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 11:06:33,432 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i [2023-09-01 11:06:33,442 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b98fe40d/af07d47817314b1d9121973b59f1fa18/FLAGc99fd3409 [2023-09-01 11:06:33,458 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b98fe40d/af07d47817314b1d9121973b59f1fa18 [2023-09-01 11:06:33,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 11:06:33,461 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 11:06:33,462 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 11:06:33,462 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 11:06:33,465 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 11:06:33,466 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 11:06:33" (1/1) ... [2023-09-01 11:06:33,467 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42dba5b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:06:33, skipping insertion in model container [2023-09-01 11:06:33,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 11:06:33" (1/1) ... [2023-09-01 11:06:33,473 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 11:06:33,517 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 11:06:33,732 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_60-invariant_racefree.i[30176,30189] [2023-09-01 11:06:33,760 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 11:06:33,774 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 11:06:33,816 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_60-invariant_racefree.i[30176,30189] [2023-09-01 11:06:33,836 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 11:06:33,922 INFO L208 MainTranslator]: Completed translation [2023-09-01 11:06:33,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:06:33 WrapperNode [2023-09-01 11:06:33,923 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 11:06:33,924 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 11:06:33,924 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 11:06:33,924 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 11:06:33,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:06:33" (1/1) ... [2023-09-01 11:06:33,960 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:06:33" (1/1) ... [2023-09-01 11:06:33,991 INFO L138 Inliner]: procedures = 170, calls = 34, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 141 [2023-09-01 11:06:33,992 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 11:06:33,993 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 11:06:33,993 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 11:06:33,993 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 11:06:34,001 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:06:33" (1/1) ... [2023-09-01 11:06:34,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:06:33" (1/1) ... [2023-09-01 11:06:34,016 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:06:33" (1/1) ... [2023-09-01 11:06:34,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:06:33" (1/1) ... [2023-09-01 11:06:34,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:06:33" (1/1) ... [2023-09-01 11:06:34,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:06:33" (1/1) ... [2023-09-01 11:06:34,036 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:06:33" (1/1) ... [2023-09-01 11:06:34,043 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:06:33" (1/1) ... [2023-09-01 11:06:34,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 11:06:34,051 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 11:06:34,051 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 11:06:34,051 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 11:06:34,052 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:06:33" (1/1) ... [2023-09-01 11:06:34,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 11:06:34,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 11:06:34,083 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 11:06:34,090 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 11:06:34,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 11:06:34,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 11:06:34,115 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 11:06:34,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 11:06:34,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 11:06:34,115 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 11:06:34,115 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 11:06:34,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 11:06:34,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 11:06:34,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 11:06:34,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 11:06:34,117 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 11:06:34,238 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 11:06:34,240 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 11:06:34,481 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 11:06:34,488 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 11:06:34,488 INFO L302 CfgBuilder]: Removed 18 assume(true) statements. [2023-09-01 11:06:34,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 11:06:34 BoogieIcfgContainer [2023-09-01 11:06:34,490 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 11:06:34,492 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 11:06:34,492 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 11:06:34,495 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 11:06:34,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 11:06:33" (1/3) ... [2023-09-01 11:06:34,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29f9ed99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 11:06:34, skipping insertion in model container [2023-09-01 11:06:34,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:06:33" (2/3) ... [2023-09-01 11:06:34,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29f9ed99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 11:06:34, skipping insertion in model container [2023-09-01 11:06:34,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 11:06:34" (3/3) ... [2023-09-01 11:06:34,498 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_60-invariant_racefree.i [2023-09-01 11:06:34,504 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 11:06:34,513 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 11:06:34,513 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-09-01 11:06:34,513 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 11:06:34,579 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 11:06:34,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 138 transitions, 284 flow [2023-09-01 11:06:34,732 INFO L130 PetriNetUnfolder]: 33/193 cut-off events. [2023-09-01 11:06:34,732 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 11:06:34,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 193 events. 33/193 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 633 event pairs, 0 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 105. Up to 6 conditions per place. [2023-09-01 11:06:34,739 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 138 transitions, 284 flow [2023-09-01 11:06:34,747 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 115 places, 133 transitions, 271 flow [2023-09-01 11:06:34,751 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:06:34,771 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 133 transitions, 271 flow [2023-09-01 11:06:34,773 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 133 transitions, 271 flow [2023-09-01 11:06:34,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 133 transitions, 271 flow [2023-09-01 11:06:34,810 INFO L130 PetriNetUnfolder]: 32/188 cut-off events. [2023-09-01 11:06:34,811 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 11:06:34,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 188 events. 32/188 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 619 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 105. Up to 6 conditions per place. [2023-09-01 11:06:34,816 INFO L119 LiptonReduction]: Number of co-enabled transitions 5490 [2023-09-01 11:06:37,260 INFO L134 LiptonReduction]: Checked pairs total: 14551 [2023-09-01 11:06:37,260 INFO L136 LiptonReduction]: Total number of compositions: 97 [2023-09-01 11:06:37,273 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:06:37,279 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;@73c2123c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:06:37,279 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:06:37,285 INFO L130 PetriNetUnfolder]: 8/41 cut-off events. [2023-09-01 11:06:37,285 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 11:06:37,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:06:37,286 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 11:06:37,286 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:06:37,294 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:06:37,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1289063369, now seen corresponding path program 1 times [2023-09-01 11:06:37,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:06:37,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178501335] [2023-09-01 11:06:37,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:06:37,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:06:37,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:06:37,400 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:06:37,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:06:37,450 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:06:37,453 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:06:37,454 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:06:37,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 11:06:37,457 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:06:37,462 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:06:37,463 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:06:37,463 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 11:06:37,497 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 11:06:37,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 185 transitions, 388 flow [2023-09-01 11:06:37,538 INFO L130 PetriNetUnfolder]: 57/319 cut-off events. [2023-09-01 11:06:37,538 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 11:06:37,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 319 events. 57/319 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1201 event pairs, 0 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 195. Up to 9 conditions per place. [2023-09-01 11:06:37,541 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 185 transitions, 388 flow [2023-09-01 11:06:37,551 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 185 transitions, 388 flow [2023-09-01 11:06:37,552 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:06:37,552 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 185 transitions, 388 flow [2023-09-01 11:06:37,552 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 185 transitions, 388 flow [2023-09-01 11:06:37,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 185 transitions, 388 flow [2023-09-01 11:06:37,600 INFO L130 PetriNetUnfolder]: 57/319 cut-off events. [2023-09-01 11:06:37,601 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 11:06:37,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 319 events. 57/319 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1201 event pairs, 0 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 195. Up to 9 conditions per place. [2023-09-01 11:06:37,615 INFO L119 LiptonReduction]: Number of co-enabled transitions 16020 [2023-09-01 11:06:39,883 INFO L134 LiptonReduction]: Checked pairs total: 45797 [2023-09-01 11:06:39,884 INFO L136 LiptonReduction]: Total number of compositions: 125 [2023-09-01 11:06:39,886 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:06:39,887 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;@73c2123c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:06:39,888 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:06:39,895 INFO L130 PetriNetUnfolder]: 27/102 cut-off events. [2023-09-01 11:06:39,895 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 11:06:39,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:06:39,896 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 11:06:39,896 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:06:39,896 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:06:39,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1742642449, now seen corresponding path program 1 times [2023-09-01 11:06:39,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:06:39,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110682998] [2023-09-01 11:06:39,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:06:39,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:06:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:06:39,949 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:06:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:06:39,974 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:06:39,975 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:06:39,975 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:06:39,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 11:06:39,975 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:06:39,976 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:06:39,976 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:06:39,977 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 11:06:39,998 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 11:06:40,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 232 transitions, 494 flow [2023-09-01 11:06:40,055 INFO L130 PetriNetUnfolder]: 86/476 cut-off events. [2023-09-01 11:06:40,055 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 11:06:40,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 504 conditions, 476 events. 86/476 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1887 event pairs, 1 based on Foata normal form. 0/379 useless extension candidates. Maximal degree in co-relation 327. Up to 16 conditions per place. [2023-09-01 11:06:40,061 INFO L82 GeneralOperation]: Start removeDead. Operand has 195 places, 232 transitions, 494 flow [2023-09-01 11:06:40,066 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 195 places, 232 transitions, 494 flow [2023-09-01 11:06:40,066 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:06:40,066 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 195 places, 232 transitions, 494 flow [2023-09-01 11:06:40,067 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 195 places, 232 transitions, 494 flow [2023-09-01 11:06:40,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 232 transitions, 494 flow [2023-09-01 11:06:40,125 INFO L130 PetriNetUnfolder]: 86/476 cut-off events. [2023-09-01 11:06:40,126 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 11:06:40,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 504 conditions, 476 events. 86/476 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1887 event pairs, 1 based on Foata normal form. 0/379 useless extension candidates. Maximal degree in co-relation 327. Up to 16 conditions per place. [2023-09-01 11:06:40,148 INFO L119 LiptonReduction]: Number of co-enabled transitions 30510 [2023-09-01 11:06:42,548 INFO L134 LiptonReduction]: Checked pairs total: 92115 [2023-09-01 11:06:42,548 INFO L136 LiptonReduction]: Total number of compositions: 157 [2023-09-01 11:06:42,550 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:06:42,551 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;@73c2123c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:06:42,551 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:06:42,562 INFO L130 PetriNetUnfolder]: 46/164 cut-off events. [2023-09-01 11:06:42,562 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 11:06:42,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:06:42,563 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 11:06:42,563 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:06:42,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:06:42,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1971387787, now seen corresponding path program 1 times [2023-09-01 11:06:42,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:06:42,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452612724] [2023-09-01 11:06:42,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:06:42,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:06:42,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:06:42,588 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:06:42,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:06:42,612 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:06:42,612 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:06:42,612 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:06:42,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 11:06:42,613 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:06:42,613 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:06:42,614 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:06:42,614 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 11:06:42,636 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 11:06:42,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 233 places, 279 transitions, 602 flow [2023-09-01 11:06:42,756 INFO L130 PetriNetUnfolder]: 127/697 cut-off events. [2023-09-01 11:06:42,756 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 11:06:42,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 752 conditions, 697 events. 127/697 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2947 event pairs, 6 based on Foata normal form. 0/561 useless extension candidates. Maximal degree in co-relation 496. Up to 32 conditions per place. [2023-09-01 11:06:42,766 INFO L82 GeneralOperation]: Start removeDead. Operand has 233 places, 279 transitions, 602 flow [2023-09-01 11:06:42,773 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 233 places, 279 transitions, 602 flow [2023-09-01 11:06:42,774 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:06:42,774 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 233 places, 279 transitions, 602 flow [2023-09-01 11:06:42,774 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 233 places, 279 transitions, 602 flow [2023-09-01 11:06:42,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 233 places, 279 transitions, 602 flow [2023-09-01 11:06:42,855 INFO L130 PetriNetUnfolder]: 127/697 cut-off events. [2023-09-01 11:06:42,855 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 11:06:42,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 752 conditions, 697 events. 127/697 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2947 event pairs, 6 based on Foata normal form. 0/561 useless extension candidates. Maximal degree in co-relation 496. Up to 32 conditions per place. [2023-09-01 11:06:42,904 INFO L119 LiptonReduction]: Number of co-enabled transitions 49320 [2023-09-01 11:06:45,537 INFO L134 LiptonReduction]: Checked pairs total: 160952 [2023-09-01 11:06:45,538 INFO L136 LiptonReduction]: Total number of compositions: 188 [2023-09-01 11:06:45,540 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:06:45,541 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;@73c2123c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:06:45,541 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:06:45,557 INFO L130 PetriNetUnfolder]: 67/234 cut-off events. [2023-09-01 11:06:45,558 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2023-09-01 11:06:45,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:06:45,558 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 11:06:45,558 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:06:45,559 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:06:45,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1305864713, now seen corresponding path program 1 times [2023-09-01 11:06:45,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:06:45,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34225928] [2023-09-01 11:06:45,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:06:45,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:06:45,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:06:45,581 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:06:45,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:06:45,602 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:06:45,603 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:06:45,603 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:06:45,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 11:06:45,604 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:06:45,604 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:06:45,604 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:06:45,604 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 11:06:45,629 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 11:06:45,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 271 places, 326 transitions, 712 flow [2023-09-01 11:06:45,810 INFO L130 PetriNetUnfolder]: 196/1050 cut-off events. [2023-09-01 11:06:45,811 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 11:06:45,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1161 conditions, 1050 events. 196/1050 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4982 event pairs, 23 based on Foata normal form. 0/859 useless extension candidates. Maximal degree in co-relation 742. Up to 80 conditions per place. [2023-09-01 11:06:45,826 INFO L82 GeneralOperation]: Start removeDead. Operand has 271 places, 326 transitions, 712 flow [2023-09-01 11:06:45,838 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 271 places, 326 transitions, 712 flow [2023-09-01 11:06:45,838 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:06:45,838 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 271 places, 326 transitions, 712 flow [2023-09-01 11:06:45,839 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 271 places, 326 transitions, 712 flow [2023-09-01 11:06:45,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 271 places, 326 transitions, 712 flow [2023-09-01 11:06:46,010 INFO L130 PetriNetUnfolder]: 196/1050 cut-off events. [2023-09-01 11:06:46,012 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 11:06:46,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1161 conditions, 1050 events. 196/1050 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4982 event pairs, 23 based on Foata normal form. 0/859 useless extension candidates. Maximal degree in co-relation 742. Up to 80 conditions per place. [2023-09-01 11:06:46,063 INFO L119 LiptonReduction]: Number of co-enabled transitions 72450 [2023-09-01 11:06:48,792 INFO L134 LiptonReduction]: Checked pairs total: 233242 [2023-09-01 11:06:48,793 INFO L136 LiptonReduction]: Total number of compositions: 221 [2023-09-01 11:06:48,794 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:06:48,795 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;@73c2123c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:06:48,795 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:06:48,819 INFO L130 PetriNetUnfolder]: 81/293 cut-off events. [2023-09-01 11:06:48,819 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2023-09-01 11:06:48,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:06:48,819 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:06:48,820 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:06:48,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:06:48,820 INFO L85 PathProgramCache]: Analyzing trace with hash 658908477, now seen corresponding path program 1 times [2023-09-01 11:06:48,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:06:48,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595917893] [2023-09-01 11:06:48,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:06:48,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:06:48,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:06:48,872 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:06:48,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:06:48,909 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:06:48,912 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:06:48,914 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:06:48,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 11:06:48,914 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:06:48,915 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:06:48,916 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:06:48,917 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 11:06:48,954 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 11:06:48,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 309 places, 373 transitions, 824 flow [2023-09-01 11:06:49,308 INFO L130 PetriNetUnfolder]: 329/1675 cut-off events. [2023-09-01 11:06:49,308 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 11:06:49,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1907 conditions, 1675 events. 329/1675 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 9254 event pairs, 72 based on Foata normal form. 0/1397 useless extension candidates. Maximal degree in co-relation 1149. Up to 192 conditions per place. [2023-09-01 11:06:49,339 INFO L82 GeneralOperation]: Start removeDead. Operand has 309 places, 373 transitions, 824 flow [2023-09-01 11:06:49,356 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 309 places, 373 transitions, 824 flow [2023-09-01 11:06:49,357 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:06:49,357 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 309 places, 373 transitions, 824 flow [2023-09-01 11:06:49,361 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 309 places, 373 transitions, 824 flow [2023-09-01 11:06:49,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 309 places, 373 transitions, 824 flow [2023-09-01 11:06:49,690 INFO L130 PetriNetUnfolder]: 329/1675 cut-off events. [2023-09-01 11:06:49,691 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 11:06:49,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1907 conditions, 1675 events. 329/1675 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 9254 event pairs, 72 based on Foata normal form. 0/1397 useless extension candidates. Maximal degree in co-relation 1149. Up to 192 conditions per place. [2023-09-01 11:06:49,794 INFO L119 LiptonReduction]: Number of co-enabled transitions 99900 [2023-09-01 11:06:52,922 INFO L134 LiptonReduction]: Checked pairs total: 330716 [2023-09-01 11:06:52,923 INFO L136 LiptonReduction]: Total number of compositions: 261 [2023-09-01 11:06:52,924 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:06:52,925 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;@73c2123c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:06:52,925 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:06:52,966 INFO L130 PetriNetUnfolder]: 101/367 cut-off events. [2023-09-01 11:06:52,966 INFO L131 PetriNetUnfolder]: For 70/70 co-relation queries the response was YES. [2023-09-01 11:06:52,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:06:52,966 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:06:52,967 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:06:52,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:06:52,967 INFO L85 PathProgramCache]: Analyzing trace with hash 804520676, now seen corresponding path program 1 times [2023-09-01 11:06:52,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:06:52,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527132546] [2023-09-01 11:06:52,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:06:52,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:06:52,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:06:52,991 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:06:53,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:06:53,012 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:06:53,012 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:06:53,012 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:06:53,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 11:06:53,013 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:06:53,013 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:06:53,014 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:06:53,014 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 11:06:53,069 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 11:06:53,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 347 places, 420 transitions, 938 flow [2023-09-01 11:06:53,647 INFO L130 PetriNetUnfolder]: 606/2860 cut-off events. [2023-09-01 11:06:53,648 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 11:06:53,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3358 conditions, 2860 events. 606/2860 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 18646 event pairs, 201 based on Foata normal form. 0/2431 useless extension candidates. Maximal degree in co-relation 1893. Up to 448 conditions per place. [2023-09-01 11:06:53,704 INFO L82 GeneralOperation]: Start removeDead. Operand has 347 places, 420 transitions, 938 flow [2023-09-01 11:06:53,734 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 347 places, 420 transitions, 938 flow [2023-09-01 11:06:53,734 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:06:53,734 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 347 places, 420 transitions, 938 flow [2023-09-01 11:06:53,735 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 347 places, 420 transitions, 938 flow [2023-09-01 11:06:53,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 347 places, 420 transitions, 938 flow [2023-09-01 11:06:54,390 INFO L130 PetriNetUnfolder]: 606/2860 cut-off events. [2023-09-01 11:06:54,391 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 11:06:54,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3358 conditions, 2860 events. 606/2860 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 18646 event pairs, 201 based on Foata normal form. 0/2431 useless extension candidates. Maximal degree in co-relation 1893. Up to 448 conditions per place. [2023-09-01 11:06:54,838 INFO L119 LiptonReduction]: Number of co-enabled transitions 131670 [2023-09-01 11:06:58,018 INFO L134 LiptonReduction]: Checked pairs total: 438869 [2023-09-01 11:06:58,018 INFO L136 LiptonReduction]: Total number of compositions: 280 [2023-09-01 11:06:58,020 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:06:58,020 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;@73c2123c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:06:58,020 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:06:58,071 INFO L130 PetriNetUnfolder]: 127/458 cut-off events. [2023-09-01 11:06:58,071 INFO L131 PetriNetUnfolder]: For 113/113 co-relation queries the response was YES. [2023-09-01 11:06:58,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:06:58,072 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:06:58,072 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:06:58,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:06:58,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1764547695, now seen corresponding path program 1 times [2023-09-01 11:06:58,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:06:58,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127795819] [2023-09-01 11:06:58,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:06:58,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:06:58,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:06:58,095 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:06:58,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:06:58,114 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:06:58,114 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:06:58,114 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:06:58,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 11:06:58,115 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:06:58,115 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:06:58,116 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:06:58,116 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 11:06:58,148 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 11:06:58,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 385 places, 467 transitions, 1054 flow [2023-09-01 11:06:59,162 INFO L130 PetriNetUnfolder]: 1203/5197 cut-off events. [2023-09-01 11:06:59,163 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 11:06:59,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6282 conditions, 5197 events. 1203/5197 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 40020 event pairs, 522 based on Foata normal form. 0/4489 useless extension candidates. Maximal degree in co-relation 3342. Up to 1024 conditions per place. [2023-09-01 11:06:59,315 INFO L82 GeneralOperation]: Start removeDead. Operand has 385 places, 467 transitions, 1054 flow [2023-09-01 11:06:59,374 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 385 places, 467 transitions, 1054 flow [2023-09-01 11:06:59,374 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:06:59,375 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 385 places, 467 transitions, 1054 flow [2023-09-01 11:06:59,375 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 385 places, 467 transitions, 1054 flow [2023-09-01 11:06:59,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 385 places, 467 transitions, 1054 flow [2023-09-01 11:07:00,340 INFO L130 PetriNetUnfolder]: 1203/5197 cut-off events. [2023-09-01 11:07:00,340 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 11:07:00,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6282 conditions, 5197 events. 1203/5197 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 40020 event pairs, 522 based on Foata normal form. 0/4489 useless extension candidates. Maximal degree in co-relation 3342. Up to 1024 conditions per place. [2023-09-01 11:07:00,804 INFO L119 LiptonReduction]: Number of co-enabled transitions 167760 [2023-09-01 11:07:04,324 INFO L134 LiptonReduction]: Checked pairs total: 562931 [2023-09-01 11:07:04,325 INFO L136 LiptonReduction]: Total number of compositions: 312 [2023-09-01 11:07:04,326 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:07:04,327 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;@73c2123c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:07:04,327 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:07:04,376 INFO L130 PetriNetUnfolder]: 163/578 cut-off events. [2023-09-01 11:07:04,377 INFO L131 PetriNetUnfolder]: For 177/177 co-relation queries the response was YES. [2023-09-01 11:07:04,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:07:04,377 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:07:04,377 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:07:04,378 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:07:04,378 INFO L85 PathProgramCache]: Analyzing trace with hash 931230124, now seen corresponding path program 1 times [2023-09-01 11:07:04,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:07:04,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947306947] [2023-09-01 11:07:04,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:07:04,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:07:04,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:07:04,421 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:07:04,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:07:04,453 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:07:04,453 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:07:04,453 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:07:04,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 11:07:04,454 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:07:04,455 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:07:04,455 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:07:04,455 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 11:07:04,492 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 11:07:04,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 423 places, 514 transitions, 1172 flow [2023-09-01 11:07:06,701 INFO L130 PetriNetUnfolder]: 2504/9902 cut-off events. [2023-09-01 11:07:06,701 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 11:07:06,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12279 conditions, 9902 events. 2504/9902 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 88539 event pairs, 1291 based on Foata normal form. 0/8659 useless extension candidates. Maximal degree in co-relation 6264. Up to 2304 conditions per place. [2023-09-01 11:07:06,896 INFO L82 GeneralOperation]: Start removeDead. Operand has 423 places, 514 transitions, 1172 flow [2023-09-01 11:07:07,072 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 423 places, 514 transitions, 1172 flow [2023-09-01 11:07:07,072 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:07:07,072 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 423 places, 514 transitions, 1172 flow [2023-09-01 11:07:07,073 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 423 places, 514 transitions, 1172 flow [2023-09-01 11:07:07,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 423 places, 514 transitions, 1172 flow [2023-09-01 11:07:09,199 INFO L130 PetriNetUnfolder]: 2504/9902 cut-off events. [2023-09-01 11:07:09,200 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 11:07:09,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12279 conditions, 9902 events. 2504/9902 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 88539 event pairs, 1291 based on Foata normal form. 0/8659 useless extension candidates. Maximal degree in co-relation 6264. Up to 2304 conditions per place. [2023-09-01 11:07:09,883 INFO L119 LiptonReduction]: Number of co-enabled transitions 208170 [2023-09-01 11:07:13,525 INFO L134 LiptonReduction]: Checked pairs total: 706836 [2023-09-01 11:07:13,526 INFO L136 LiptonReduction]: Total number of compositions: 340 [2023-09-01 11:07:13,527 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:07:13,528 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;@73c2123c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:07:13,528 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:07:13,614 INFO L130 PetriNetUnfolder]: 219/743 cut-off events. [2023-09-01 11:07:13,614 INFO L131 PetriNetUnfolder]: For 272/272 co-relation queries the response was YES. [2023-09-01 11:07:13,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:07:13,614 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:07:13,615 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:07:13,615 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:07:13,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1245977112, now seen corresponding path program 1 times [2023-09-01 11:07:13,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:07:13,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280619646] [2023-09-01 11:07:13,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:07:13,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:07:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:07:13,638 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:07:13,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:07:13,658 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:07:13,659 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:07:13,659 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:07:13,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 11:07:13,659 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:07:13,660 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:07:13,660 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:07:13,660 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 11:07:13,699 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 11:07:13,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 461 places, 561 transitions, 1292 flow [2023-09-01 11:07:18,431 INFO L130 PetriNetUnfolder]: 5341/19471 cut-off events. [2023-09-01 11:07:18,431 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 11:07:18,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24677 conditions, 19471 events. 5341/19471 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 197322 event pairs, 3084 based on Foata normal form. 0/17181 useless extension candidates. Maximal degree in co-relation 12259. Up to 5120 conditions per place. [2023-09-01 11:07:18,873 INFO L82 GeneralOperation]: Start removeDead. Operand has 461 places, 561 transitions, 1292 flow [2023-09-01 11:07:19,244 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 461 places, 561 transitions, 1292 flow [2023-09-01 11:07:19,245 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:07:19,245 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 461 places, 561 transitions, 1292 flow [2023-09-01 11:07:19,245 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 461 places, 561 transitions, 1292 flow [2023-09-01 11:07:19,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 461 places, 561 transitions, 1292 flow [2023-09-01 11:07:24,051 INFO L130 PetriNetUnfolder]: 5341/19471 cut-off events. [2023-09-01 11:07:24,051 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 11:07:24,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24677 conditions, 19471 events. 5341/19471 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 197322 event pairs, 3084 based on Foata normal form. 0/17181 useless extension candidates. Maximal degree in co-relation 12259. Up to 5120 conditions per place. [2023-09-01 11:07:25,643 INFO L119 LiptonReduction]: Number of co-enabled transitions 252900 [2023-09-01 11:07:29,647 INFO L134 LiptonReduction]: Checked pairs total: 848006 [2023-09-01 11:07:29,647 INFO L136 LiptonReduction]: Total number of compositions: 370 [2023-09-01 11:07:29,648 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:07:29,649 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;@73c2123c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:07:29,649 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:07:29,737 INFO L130 PetriNetUnfolder]: 280/928 cut-off events. [2023-09-01 11:07:29,737 INFO L131 PetriNetUnfolder]: For 412/412 co-relation queries the response was YES. [2023-09-01 11:07:29,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:07:29,738 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:07:29,738 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:07:29,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:07:29,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1699180901, now seen corresponding path program 1 times [2023-09-01 11:07:29,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:07:29,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328038396] [2023-09-01 11:07:29,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:07:29,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:07:29,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:07:29,758 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:07:29,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:07:29,777 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:07:29,777 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:07:29,777 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:07:29,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 11:07:29,778 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:07:29,778 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:07:29,778 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:07:29,778 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 11:07:29,818 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 11:07:29,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 499 places, 608 transitions, 1414 flow [2023-09-01 11:07:40,964 INFO L130 PetriNetUnfolder]: 11506/39024 cut-off events. [2023-09-01 11:07:40,964 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 11:07:42,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50388 conditions, 39024 events. 11506/39024 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 441786 event pairs, 7181 based on Foata normal form. 0/34663 useless extension candidates. Maximal degree in co-relation 24656. Up to 11264 conditions per place. [2023-09-01 11:07:42,361 INFO L82 GeneralOperation]: Start removeDead. Operand has 499 places, 608 transitions, 1414 flow [2023-09-01 11:07:43,387 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 499 places, 608 transitions, 1414 flow [2023-09-01 11:07:43,387 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:07:43,387 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 499 places, 608 transitions, 1414 flow [2023-09-01 11:07:43,387 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 499 places, 608 transitions, 1414 flow [2023-09-01 11:07:43,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 499 places, 608 transitions, 1414 flow [2023-09-01 11:07:54,318 INFO L130 PetriNetUnfolder]: 11506/39024 cut-off events. [2023-09-01 11:07:54,318 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 11:07:55,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50388 conditions, 39024 events. 11506/39024 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 441786 event pairs, 7181 based on Foata normal form. 0/34663 useless extension candidates. Maximal degree in co-relation 24656. Up to 11264 conditions per place. [2023-09-01 11:07:57,887 INFO L119 LiptonReduction]: Number of co-enabled transitions 301950 [2023-09-01 11:08:01,938 INFO L134 LiptonReduction]: Checked pairs total: 1022277 [2023-09-01 11:08:01,938 INFO L136 LiptonReduction]: Total number of compositions: 410 [2023-09-01 11:08:01,939 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:08:01,939 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;@73c2123c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:08:01,939 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:08:02,054 INFO L130 PetriNetUnfolder]: 398/1238 cut-off events. [2023-09-01 11:08:02,054 INFO L131 PetriNetUnfolder]: For 619/619 co-relation queries the response was YES. [2023-09-01 11:08:02,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:08:02,054 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:08:02,054 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:08:02,055 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:08:02,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1699231189, now seen corresponding path program 1 times [2023-09-01 11:08:02,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:08:02,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818795860] [2023-09-01 11:08:02,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:08:02,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:08:02,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:08:02,078 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:08:02,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:08:02,099 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:08:02,099 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:08:02,099 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:08:02,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 11:08:02,100 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:08:02,100 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:08:02,100 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:08:02,100 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 11:08:02,136 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 11:08:02,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 537 places, 655 transitions, 1538 flow [2023-09-01 11:08:27,304 INFO L130 PetriNetUnfolder]: 24839/79057 cut-off events. [2023-09-01 11:08:27,305 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 11:08:34,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103748 conditions, 79057 events. 24839/79057 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1418. Compared 981062 event pairs, 16398 based on Foata normal form. 0/70577 useless extension candidates. Maximal degree in co-relation 50367. Up to 24576 conditions per place. [2023-09-01 11:08:34,782 INFO L82 GeneralOperation]: Start removeDead. Operand has 537 places, 655 transitions, 1538 flow [2023-09-01 11:08:37,284 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 537 places, 655 transitions, 1538 flow [2023-09-01 11:08:37,285 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:08:37,285 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 537 places, 655 transitions, 1538 flow [2023-09-01 11:08:37,285 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 537 places, 655 transitions, 1538 flow [2023-09-01 11:08:37,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 537 places, 655 transitions, 1538 flow [2023-09-01 11:09:01,455 INFO L130 PetriNetUnfolder]: 24839/79057 cut-off events. [2023-09-01 11:09:01,456 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 11:09:07,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103748 conditions, 79057 events. 24839/79057 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1418. Compared 981062 event pairs, 16398 based on Foata normal form. 0/70577 useless extension candidates. Maximal degree in co-relation 50367. Up to 24576 conditions per place. [2023-09-01 11:09:14,000 INFO L119 LiptonReduction]: Number of co-enabled transitions 355320 [2023-09-01 11:09:18,159 INFO L134 LiptonReduction]: Checked pairs total: 1069317 [2023-09-01 11:09:18,159 INFO L136 LiptonReduction]: Total number of compositions: 425 [2023-09-01 11:09:18,160 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:09:18,161 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;@73c2123c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:09:18,161 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:09:18,346 INFO L130 PetriNetUnfolder]: 557/1636 cut-off events. [2023-09-01 11:09:18,346 INFO L131 PetriNetUnfolder]: For 927/927 co-relation queries the response was YES. [2023-09-01 11:09:18,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:09:18,346 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:09:18,347 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:09:18,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:09:18,347 INFO L85 PathProgramCache]: Analyzing trace with hash 532154185, now seen corresponding path program 1 times [2023-09-01 11:09:18,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:09:18,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306097450] [2023-09-01 11:09:18,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:09:18,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:09:18,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:09:18,369 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:09:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:09:18,390 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:09:18,391 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:09:18,391 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:09:18,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 11:09:18,391 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:09:18,392 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:09:18,392 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:09:18,392 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 11:09:18,432 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 11:09:18,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 575 places, 702 transitions, 1664 flow [2023-09-01 11:10:16,490 INFO L130 PetriNetUnfolder]: 53532/161074 cut-off events. [2023-09-01 11:10:16,490 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 11:10:30,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214453 conditions, 161074 events. 53532/161074 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2807. Compared 2171832 event pairs, 36879 based on Foata normal form. 0/144379 useless extension candidates. Maximal degree in co-relation 103727. Up to 53248 conditions per place. [2023-09-01 11:10:30,587 INFO L82 GeneralOperation]: Start removeDead. Operand has 575 places, 702 transitions, 1664 flow [2023-09-01 11:10:36,662 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 575 places, 702 transitions, 1664 flow [2023-09-01 11:10:36,663 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:10:36,663 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 575 places, 702 transitions, 1664 flow [2023-09-01 11:10:36,663 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 575 places, 702 transitions, 1664 flow [2023-09-01 11:10:36,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 575 places, 702 transitions, 1664 flow [2023-09-01 11:11:34,475 INFO L130 PetriNetUnfolder]: 53532/161074 cut-off events. [2023-09-01 11:11:34,475 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 11:11:48,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214453 conditions, 161074 events. 53532/161074 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2807. Compared 2171832 event pairs, 36879 based on Foata normal form. 0/144379 useless extension candidates. Maximal degree in co-relation 103727. Up to 53248 conditions per place. [2023-09-01 11:12:13,990 INFO L119 LiptonReduction]: Number of co-enabled transitions 413010 [2023-09-01 11:12:18,585 INFO L134 LiptonReduction]: Checked pairs total: 1432113 [2023-09-01 11:12:18,585 INFO L136 LiptonReduction]: Total number of compositions: 461 [2023-09-01 11:12:18,588 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:12:18,588 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;@73c2123c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:12:18,588 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:12:18,846 INFO L130 PetriNetUnfolder]: 839/2290 cut-off events. [2023-09-01 11:12:18,846 INFO L131 PetriNetUnfolder]: For 1387/1387 co-relation queries the response was YES. [2023-09-01 11:12:18,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:12:18,846 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:12:18,847 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:12:18,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:12:18,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1065241326, now seen corresponding path program 1 times [2023-09-01 11:12:18,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:12:18,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154309795] [2023-09-01 11:12:18,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:12:18,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:12:18,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:12:18,868 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:12:18,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:12:18,891 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:12:18,891 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:12:18,891 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:12:18,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 11:12:18,892 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:12:18,892 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:12:18,892 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:12:18,892 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-09-01 11:12:18,934 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-09-01 11:12:18,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 613 places, 749 transitions, 1792 flow