./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-2.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for data races 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/pthread-ext/26_stack_cas_longer-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-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 ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cb8c1938cc441082517c5681097f5f6483a36107a8ec46d723b101297930909d --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 [2023-08-31 11:40:30,452 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 11:40:30,454 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 11:40:30,485 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 11:40:30,489 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 11:40:30,492 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 11:40:30,493 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 11:40:30,496 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 11:40:30,498 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 11:40:30,499 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 11:40:30,499 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 11:40:30,500 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 11:40:30,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 11:40:30,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 11:40:30,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 11:40:30,504 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 11:40:30,504 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 11:40:30,508 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 11:40:30,510 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 11:40:30,513 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 11:40:30,521 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 11:40:30,522 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 11:40:30,525 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 11:40:30,526 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 11:40:30,529 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 11:40:30,534 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 11:40:30,534 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 11:40:30,535 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 11:40:30,535 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 11:40:30,537 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 11:40:30,537 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 11:40:30,538 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 11:40:30,541 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 11:40:30,542 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 11:40:30,543 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 11:40:30,544 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 11:40:30,544 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 11:40:30,544 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 11:40:30,545 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 11:40:30,545 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 11:40:30,545 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 11:40:30,547 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-31 11:40:30,582 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 11:40:30,583 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 11:40:30,584 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 11:40:30,584 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 11:40:30,585 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 11:40:30,585 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 11:40:30,585 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 11:40:30,586 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 11:40:30,586 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 11:40:30,586 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 11:40:30,587 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 11:40:30,587 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 11:40:30,587 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 11:40:30,587 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 11:40:30,588 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 11:40:30,588 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 11:40:30,588 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 11:40:30,588 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 11:40:30,588 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-31 11:40:30,589 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 11:40:30,589 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 11:40:30,589 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 11:40:30,589 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 11:40:30,589 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 11:40:30,590 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 11:40:30,590 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 11:40:30,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 11:40:30,590 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 11:40:30,590 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 11:40:30,591 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 11:40:30,591 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 11:40:30,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 11:40:30,591 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 11:40:30,591 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 11:40:30,592 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 11:40:30,592 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 11:40:30,592 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 11:40:30,592 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb8c1938cc441082517c5681097f5f6483a36107a8ec46d723b101297930909d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 11:40:30,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 11:40:30,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 11:40:30,919 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 11:40:30,921 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 11:40:30,921 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 11:40:30,922 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-2.i [2023-08-31 11:40:32,006 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 11:40:32,254 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 11:40:32,255 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-2.i [2023-08-31 11:40:32,264 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5a2cd080/59bfd9ed6b024c6b8991f3cdf3b4c429/FLAG8d2b5873c [2023-08-31 11:40:32,276 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5a2cd080/59bfd9ed6b024c6b8991f3cdf3b4c429 [2023-08-31 11:40:32,278 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 11:40:32,279 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 11:40:32,281 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 11:40:32,281 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 11:40:32,286 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 11:40:32,286 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:40:32" (1/1) ... [2023-08-31 11:40:32,287 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bf869bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:40:32, skipping insertion in model container [2023-08-31 11:40:32,288 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:40:32" (1/1) ... [2023-08-31 11:40:32,293 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 11:40:32,343 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 11:40:32,712 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-2.i[31163,31176] [2023-08-31 11:40:32,720 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 11:40:32,731 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 11:40:32,783 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-2.i[31163,31176] [2023-08-31 11:40:32,790 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 11:40:32,849 INFO L208 MainTranslator]: Completed translation [2023-08-31 11:40:32,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:40:32 WrapperNode [2023-08-31 11:40:32,850 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 11:40:32,851 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 11:40:32,851 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 11:40:32,851 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 11:40:32,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:40:32" (1/1) ... [2023-08-31 11:40:32,877 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:40:32" (1/1) ... [2023-08-31 11:40:32,918 INFO L138 Inliner]: procedures = 177, calls = 47, calls flagged for inlining = 16, calls inlined = 19, statements flattened = 320 [2023-08-31 11:40:32,921 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 11:40:32,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 11:40:32,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 11:40:32,923 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 11:40:32,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:40:32" (1/1) ... [2023-08-31 11:40:32,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:40:32" (1/1) ... [2023-08-31 11:40:32,950 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:40:32" (1/1) ... [2023-08-31 11:40:32,952 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:40:32" (1/1) ... [2023-08-31 11:40:32,975 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:40:32" (1/1) ... [2023-08-31 11:40:32,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:40:32" (1/1) ... [2023-08-31 11:40:32,993 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:40:32" (1/1) ... [2023-08-31 11:40:32,999 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:40:32" (1/1) ... [2023-08-31 11:40:33,002 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 11:40:33,003 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 11:40:33,003 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 11:40:33,004 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 11:40:33,004 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:40:32" (1/1) ... [2023-08-31 11:40:33,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 11:40:33,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 11:40:33,033 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) [2023-08-31 11:40:33,057 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 [2023-08-31 11:40:33,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 11:40:33,073 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-31 11:40:33,074 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-31 11:40:33,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 11:40:33,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 11:40:33,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 11:40:33,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 11:40:33,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 11:40:33,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 11:40:33,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 11:40:33,076 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 11:40:33,263 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 11:40:33,265 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 11:40:33,832 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 11:40:34,083 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 11:40:34,083 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-31 11:40:34,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:40:34 BoogieIcfgContainer [2023-08-31 11:40:34,085 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 11:40:34,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 11:40:34,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 11:40:34,091 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 11:40:34,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 11:40:32" (1/3) ... [2023-08-31 11:40:34,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f072ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:40:34, skipping insertion in model container [2023-08-31 11:40:34,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:40:32" (2/3) ... [2023-08-31 11:40:34,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f072ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:40:34, skipping insertion in model container [2023-08-31 11:40:34,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:40:34" (3/3) ... [2023-08-31 11:40:34,094 INFO L112 eAbstractionObserver]: Analyzing ICFG 26_stack_cas_longer-2.i [2023-08-31 11:40:34,101 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 11:40:34,109 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 11:40:34,109 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-08-31 11:40:34,109 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 11:40:34,219 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:40:34,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 181 transitions, 367 flow [2023-08-31 11:40:34,352 INFO L130 PetriNetUnfolder]: 11/191 cut-off events. [2023-08-31 11:40:34,360 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 11:40:34,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 191 events. 11/191 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 243 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 157. Up to 4 conditions per place. [2023-08-31 11:40:34,367 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 181 transitions, 367 flow [2023-08-31 11:40:34,377 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 174 places, 181 transitions, 367 flow [2023-08-31 11:40:34,380 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:40:34,387 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 174 places, 181 transitions, 367 flow [2023-08-31 11:40:34,391 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 174 places, 181 transitions, 367 flow [2023-08-31 11:40:34,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 181 transitions, 367 flow [2023-08-31 11:40:34,454 INFO L130 PetriNetUnfolder]: 11/191 cut-off events. [2023-08-31 11:40:34,454 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 11:40:34,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 191 events. 11/191 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 243 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 157. Up to 4 conditions per place. [2023-08-31 11:40:34,460 INFO L119 LiptonReduction]: Number of co-enabled transitions 3770 [2023-08-31 11:40:40,772 INFO L134 LiptonReduction]: Checked pairs total: 4399 [2023-08-31 11:40:40,772 INFO L136 LiptonReduction]: Total number of compositions: 195 [2023-08-31 11:40:40,783 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:40:40,788 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;@288a27d3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:40:40,789 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:40:40,793 INFO L130 PetriNetUnfolder]: 2/20 cut-off events. [2023-08-31 11:40:40,793 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 11:40:40,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:40:40,794 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-31 11:40:40,794 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:40:40,798 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:40:40,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1874194445, now seen corresponding path program 1 times [2023-08-31 11:40:40,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:40:40,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797384698] [2023-08-31 11:40:40,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:40:40,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:40:40,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:40:40,927 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:40:40,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:40:40,990 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:40:40,992 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:40:40,993 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:40:40,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 11:40:40,995 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:40:40,997 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:40:40,998 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:40:40,998 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-31 11:40:41,095 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:40:41,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 313 places, 327 transitions, 666 flow [2023-08-31 11:40:41,186 INFO L130 PetriNetUnfolder]: 21/349 cut-off events. [2023-08-31 11:40:41,186 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 11:40:41,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 359 conditions, 349 events. 21/349 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 949 event pairs, 0 based on Foata normal form. 0/273 useless extension candidates. Maximal degree in co-relation 302. Up to 6 conditions per place. [2023-08-31 11:40:41,191 INFO L82 GeneralOperation]: Start removeDead. Operand has 313 places, 327 transitions, 666 flow [2023-08-31 11:40:41,194 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 313 places, 327 transitions, 666 flow [2023-08-31 11:40:41,194 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:40:41,194 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 313 places, 327 transitions, 666 flow [2023-08-31 11:40:41,194 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 313 places, 327 transitions, 666 flow [2023-08-31 11:40:41,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 313 places, 327 transitions, 666 flow [2023-08-31 11:40:41,246 INFO L130 PetriNetUnfolder]: 21/349 cut-off events. [2023-08-31 11:40:41,246 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 11:40:41,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 359 conditions, 349 events. 21/349 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 949 event pairs, 0 based on Foata normal form. 0/273 useless extension candidates. Maximal degree in co-relation 302. Up to 6 conditions per place. [2023-08-31 11:40:41,270 INFO L119 LiptonReduction]: Number of co-enabled transitions 49880 [2023-08-31 11:40:47,687 INFO L134 LiptonReduction]: Checked pairs total: 221986 [2023-08-31 11:40:47,688 INFO L136 LiptonReduction]: Total number of compositions: 189 [2023-08-31 11:40:47,690 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:40:47,691 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;@288a27d3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:40:47,691 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:40:47,696 INFO L130 PetriNetUnfolder]: 1/37 cut-off events. [2023-08-31 11:40:47,696 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 11:40:47,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:40:47,697 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-31 11:40:47,697 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:40:47,697 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:40:47,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1770387562, now seen corresponding path program 1 times [2023-08-31 11:40:47,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:40:47,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239067755] [2023-08-31 11:40:47,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:40:47,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:40:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:40:47,737 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:40:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:40:47,781 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:40:47,784 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:40:47,785 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:40:47,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 11:40:47,787 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:40:47,788 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:40:47,792 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:40:47,793 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-31 11:40:47,900 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:40:47,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 452 places, 473 transitions, 967 flow [2023-08-31 11:40:48,041 INFO L130 PetriNetUnfolder]: 31/507 cut-off events. [2023-08-31 11:40:48,043 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-31 11:40:48,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 523 conditions, 507 events. 31/507 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1855 event pairs, 0 based on Foata normal form. 0/394 useless extension candidates. Maximal degree in co-relation 447. Up to 8 conditions per place. [2023-08-31 11:40:48,049 INFO L82 GeneralOperation]: Start removeDead. Operand has 452 places, 473 transitions, 967 flow [2023-08-31 11:40:48,056 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 452 places, 473 transitions, 967 flow [2023-08-31 11:40:48,057 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:40:48,057 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 452 places, 473 transitions, 967 flow [2023-08-31 11:40:48,057 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 452 places, 473 transitions, 967 flow [2023-08-31 11:40:48,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 452 places, 473 transitions, 967 flow [2023-08-31 11:40:48,193 INFO L130 PetriNetUnfolder]: 31/507 cut-off events. [2023-08-31 11:40:48,194 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-31 11:40:48,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 523 conditions, 507 events. 31/507 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1855 event pairs, 0 based on Foata normal form. 0/394 useless extension candidates. Maximal degree in co-relation 447. Up to 8 conditions per place. [2023-08-31 11:40:48,231 INFO L119 LiptonReduction]: Number of co-enabled transitions 138330 [2023-08-31 11:41:11,713 INFO L134 LiptonReduction]: Checked pairs total: 552886 [2023-08-31 11:41:11,714 INFO L136 LiptonReduction]: Total number of compositions: 281 [2023-08-31 11:41:11,715 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:41:11,716 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;@288a27d3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:41:11,716 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:41:11,723 INFO L130 PetriNetUnfolder]: 2/72 cut-off events. [2023-08-31 11:41:11,723 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-31 11:41:11,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:41:11,723 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-31 11:41:11,724 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:41:11,724 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:41:11,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1778784938, now seen corresponding path program 1 times [2023-08-31 11:41:11,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:41:11,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048762924] [2023-08-31 11:41:11,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:41:11,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:41:11,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:41:11,761 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:41:11,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:41:11,782 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:41:11,783 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:41:11,783 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:41:11,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 11:41:11,783 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:41:11,784 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:41:11,784 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:41:11,784 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-31 11:41:11,879 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:41:11,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 591 places, 619 transitions, 1270 flow [2023-08-31 11:41:12,080 INFO L130 PetriNetUnfolder]: 41/665 cut-off events. [2023-08-31 11:41:12,080 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-31 11:41:12,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 688 conditions, 665 events. 41/665 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2872 event pairs, 0 based on Foata normal form. 0/515 useless extension candidates. Maximal degree in co-relation 592. Up to 10 conditions per place. [2023-08-31 11:41:12,090 INFO L82 GeneralOperation]: Start removeDead. Operand has 591 places, 619 transitions, 1270 flow [2023-08-31 11:41:12,096 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 591 places, 619 transitions, 1270 flow [2023-08-31 11:41:12,097 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:41:12,097 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 591 places, 619 transitions, 1270 flow [2023-08-31 11:41:12,097 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 591 places, 619 transitions, 1270 flow [2023-08-31 11:41:12,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 591 places, 619 transitions, 1270 flow [2023-08-31 11:41:12,282 INFO L130 PetriNetUnfolder]: 41/665 cut-off events. [2023-08-31 11:41:12,283 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-31 11:41:12,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 688 conditions, 665 events. 41/665 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2872 event pairs, 0 based on Foata normal form. 0/515 useless extension candidates. Maximal degree in co-relation 592. Up to 10 conditions per place. [2023-08-31 11:41:12,338 INFO L119 LiptonReduction]: Number of co-enabled transitions 269120 [2023-08-31 11:41:55,086 INFO L134 LiptonReduction]: Checked pairs total: 1260756 [2023-08-31 11:41:55,087 INFO L136 LiptonReduction]: Total number of compositions: 377 [2023-08-31 11:41:55,089 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:41:55,090 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;@288a27d3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:41:55,090 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:41:55,107 INFO L130 PetriNetUnfolder]: 5/125 cut-off events. [2023-08-31 11:41:55,107 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-31 11:41:55,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:41:55,107 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-31 11:41:55,108 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:41:55,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:41:55,108 INFO L85 PathProgramCache]: Analyzing trace with hash -419963176, now seen corresponding path program 1 times [2023-08-31 11:41:55,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:41:55,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930555664] [2023-08-31 11:41:55,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:41:55,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:41:55,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:41:55,149 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:41:55,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:41:55,175 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:41:55,185 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:41:55,185 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:41:55,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 11:41:55,186 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:41:55,186 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:41:55,186 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:41:55,186 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-31 11:41:55,313 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:41:55,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 730 places, 765 transitions, 1575 flow [2023-08-31 11:41:55,583 INFO L130 PetriNetUnfolder]: 51/823 cut-off events. [2023-08-31 11:41:55,583 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-31 11:41:55,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 854 conditions, 823 events. 51/823 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3941 event pairs, 0 based on Foata normal form. 0/636 useless extension candidates. Maximal degree in co-relation 737. Up to 12 conditions per place. [2023-08-31 11:41:55,599 INFO L82 GeneralOperation]: Start removeDead. Operand has 730 places, 765 transitions, 1575 flow [2023-08-31 11:41:55,607 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 730 places, 765 transitions, 1575 flow [2023-08-31 11:41:55,607 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:41:55,608 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 730 places, 765 transitions, 1575 flow [2023-08-31 11:41:55,608 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 730 places, 765 transitions, 1575 flow [2023-08-31 11:41:55,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 730 places, 765 transitions, 1575 flow [2023-08-31 11:41:55,841 INFO L130 PetriNetUnfolder]: 51/823 cut-off events. [2023-08-31 11:41:55,841 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-31 11:41:55,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 854 conditions, 823 events. 51/823 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3941 event pairs, 0 based on Foata normal form. 0/636 useless extension candidates. Maximal degree in co-relation 737. Up to 12 conditions per place. [2023-08-31 11:41:56,026 INFO L119 LiptonReduction]: Number of co-enabled transitions 442250 [2023-08-31 11:42:18,608 INFO L134 LiptonReduction]: Checked pairs total: 1843009 [2023-08-31 11:42:18,608 INFO L136 LiptonReduction]: Total number of compositions: 440 [2023-08-31 11:42:18,610 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:42:18,611 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;@288a27d3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:42:18,611 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:42:18,646 INFO L130 PetriNetUnfolder]: 9/189 cut-off events. [2023-08-31 11:42:18,647 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-31 11:42:18,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:42:18,647 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:42:18,651 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:42:18,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:42:18,652 INFO L85 PathProgramCache]: Analyzing trace with hash 2014686694, now seen corresponding path program 1 times [2023-08-31 11:42:18,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:42:18,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629575378] [2023-08-31 11:42:18,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:42:18,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:42:18,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:42:18,708 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:42:18,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:42:18,745 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:42:18,746 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:42:18,746 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:42:18,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 11:42:18,746 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:42:18,747 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:42:18,747 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:42:18,748 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-31 11:42:18,881 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:42:18,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 869 places, 911 transitions, 1882 flow [2023-08-31 11:42:19,189 INFO L130 PetriNetUnfolder]: 61/981 cut-off events. [2023-08-31 11:42:19,189 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-31 11:42:19,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1021 conditions, 981 events. 61/981 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 5055 event pairs, 0 based on Foata normal form. 0/757 useless extension candidates. Maximal degree in co-relation 882. Up to 14 conditions per place. [2023-08-31 11:42:19,214 INFO L82 GeneralOperation]: Start removeDead. Operand has 869 places, 911 transitions, 1882 flow [2023-08-31 11:42:19,224 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 869 places, 911 transitions, 1882 flow [2023-08-31 11:42:19,227 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:42:19,227 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 869 places, 911 transitions, 1882 flow [2023-08-31 11:42:19,228 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 869 places, 911 transitions, 1882 flow [2023-08-31 11:42:19,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 869 places, 911 transitions, 1882 flow [2023-08-31 11:42:19,586 INFO L130 PetriNetUnfolder]: 61/981 cut-off events. [2023-08-31 11:42:19,586 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-31 11:42:19,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1021 conditions, 981 events. 61/981 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 5055 event pairs, 0 based on Foata normal form. 0/757 useless extension candidates. Maximal degree in co-relation 882. Up to 14 conditions per place. [2023-08-31 11:42:19,759 INFO L119 LiptonReduction]: Number of co-enabled transitions 657720 [2023-08-31 11:43:11,218 INFO L134 LiptonReduction]: Checked pairs total: 3121338 [2023-08-31 11:43:11,219 INFO L136 LiptonReduction]: Total number of compositions: 531 [2023-08-31 11:43:11,221 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:43:11,222 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;@288a27d3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:43:11,222 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:43:11,253 INFO L130 PetriNetUnfolder]: 14/263 cut-off events. [2023-08-31 11:43:11,253 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-31 11:43:11,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:43:11,253 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:43:11,253 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:43:11,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:43:11,254 INFO L85 PathProgramCache]: Analyzing trace with hash 295134810, now seen corresponding path program 1 times [2023-08-31 11:43:11,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:43:11,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964624154] [2023-08-31 11:43:11,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:43:11,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:43:11,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:43:11,275 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:43:11,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:43:11,295 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:43:11,295 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:43:11,295 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:43:11,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 11:43:11,295 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:43:11,296 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:43:11,296 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:43:11,296 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-31 11:43:11,459 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:43:11,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1008 places, 1057 transitions, 2191 flow [2023-08-31 11:43:11,990 INFO L130 PetriNetUnfolder]: 71/1139 cut-off events. [2023-08-31 11:43:11,990 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-31 11:43:12,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1189 conditions, 1139 events. 71/1139 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 6212 event pairs, 0 based on Foata normal form. 0/878 useless extension candidates. Maximal degree in co-relation 1027. Up to 16 conditions per place. [2023-08-31 11:43:12,023 INFO L82 GeneralOperation]: Start removeDead. Operand has 1008 places, 1057 transitions, 2191 flow [2023-08-31 11:43:12,034 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1008 places, 1057 transitions, 2191 flow [2023-08-31 11:43:12,034 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:43:12,034 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1008 places, 1057 transitions, 2191 flow [2023-08-31 11:43:12,035 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1008 places, 1057 transitions, 2191 flow [2023-08-31 11:43:12,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1008 places, 1057 transitions, 2191 flow [2023-08-31 11:43:12,497 INFO L130 PetriNetUnfolder]: 71/1139 cut-off events. [2023-08-31 11:43:12,498 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-31 11:43:12,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1189 conditions, 1139 events. 71/1139 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 6212 event pairs, 0 based on Foata normal form. 0/878 useless extension candidates. Maximal degree in co-relation 1027. Up to 16 conditions per place. [2023-08-31 11:43:12,775 INFO L119 LiptonReduction]: Number of co-enabled transitions 915530 [2023-08-31 11:43:59,793 INFO L134 LiptonReduction]: Checked pairs total: 4345011 [2023-08-31 11:43:59,793 INFO L136 LiptonReduction]: Total number of compositions: 614 [2023-08-31 11:43:59,795 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:43:59,795 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;@288a27d3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:43:59,795 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:43:59,846 INFO L130 PetriNetUnfolder]: 19/344 cut-off events. [2023-08-31 11:43:59,847 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-31 11:43:59,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:43:59,847 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:43:59,847 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:43:59,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:43:59,848 INFO L85 PathProgramCache]: Analyzing trace with hash 238612654, now seen corresponding path program 1 times [2023-08-31 11:43:59,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:43:59,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534083685] [2023-08-31 11:43:59,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:43:59,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:43:59,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:43:59,871 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:43:59,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:43:59,894 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:43:59,894 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:43:59,895 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:43:59,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 11:43:59,895 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:43:59,896 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:43:59,896 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:43:59,896 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-31 11:44:00,151 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:44:00,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1147 places, 1203 transitions, 2502 flow [2023-08-31 11:44:00,718 INFO L130 PetriNetUnfolder]: 81/1297 cut-off events. [2023-08-31 11:44:00,718 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-31 11:44:00,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1358 conditions, 1297 events. 81/1297 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 7333 event pairs, 0 based on Foata normal form. 0/999 useless extension candidates. Maximal degree in co-relation 1173. Up to 18 conditions per place. [2023-08-31 11:44:00,750 INFO L82 GeneralOperation]: Start removeDead. Operand has 1147 places, 1203 transitions, 2502 flow [2023-08-31 11:44:00,762 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1147 places, 1203 transitions, 2502 flow [2023-08-31 11:44:00,762 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:44:00,762 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1147 places, 1203 transitions, 2502 flow [2023-08-31 11:44:00,763 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1147 places, 1203 transitions, 2502 flow [2023-08-31 11:44:00,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1147 places, 1203 transitions, 2502 flow [2023-08-31 11:44:01,324 INFO L130 PetriNetUnfolder]: 81/1297 cut-off events. [2023-08-31 11:44:01,324 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-31 11:44:01,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1358 conditions, 1297 events. 81/1297 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 7333 event pairs, 0 based on Foata normal form. 0/999 useless extension candidates. Maximal degree in co-relation 1173. Up to 18 conditions per place. [2023-08-31 11:44:01,504 INFO L119 LiptonReduction]: Number of co-enabled transitions 1215680 [2023-08-31 11:44:48,707 INFO L134 LiptonReduction]: Checked pairs total: 5841015 [2023-08-31 11:44:48,708 INFO L136 LiptonReduction]: Total number of compositions: 688 [2023-08-31 11:44:48,710 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:44:48,710 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;@288a27d3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:44:48,710 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:44:48,786 INFO L130 PetriNetUnfolder]: 25/432 cut-off events. [2023-08-31 11:44:48,786 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-31 11:44:48,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:44:48,786 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:44:48,786 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:44:48,787 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:44:48,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1912297585, now seen corresponding path program 1 times [2023-08-31 11:44:48,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:44:48,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048632440] [2023-08-31 11:44:48,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:44:48,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:44:48,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:44:48,828 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:44:48,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:44:48,864 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:44:48,868 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:44:48,868 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:44:48,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 11:44:48,869 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:44:48,870 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:44:48,871 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:44:48,871 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-31 11:44:49,086 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:44:49,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1286 places, 1349 transitions, 2815 flow [2023-08-31 11:44:49,793 INFO L130 PetriNetUnfolder]: 91/1455 cut-off events. [2023-08-31 11:44:49,793 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-08-31 11:44:49,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1528 conditions, 1455 events. 91/1455 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 8506 event pairs, 0 based on Foata normal form. 0/1120 useless extension candidates. Maximal degree in co-relation 1340. Up to 20 conditions per place. [2023-08-31 11:44:49,830 INFO L82 GeneralOperation]: Start removeDead. Operand has 1286 places, 1349 transitions, 2815 flow [2023-08-31 11:44:49,843 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1286 places, 1349 transitions, 2815 flow [2023-08-31 11:44:49,844 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:44:49,844 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1286 places, 1349 transitions, 2815 flow [2023-08-31 11:44:49,844 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1286 places, 1349 transitions, 2815 flow [2023-08-31 11:44:49,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1286 places, 1349 transitions, 2815 flow [2023-08-31 11:44:50,485 INFO L130 PetriNetUnfolder]: 91/1455 cut-off events. [2023-08-31 11:44:50,485 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-08-31 11:44:50,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1528 conditions, 1455 events. 91/1455 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 8506 event pairs, 0 based on Foata normal form. 0/1120 useless extension candidates. Maximal degree in co-relation 1340. Up to 20 conditions per place. [2023-08-31 11:44:50,700 INFO L119 LiptonReduction]: Number of co-enabled transitions 1558170 [2023-08-31 11:45:58,375 INFO L134 LiptonReduction]: Checked pairs total: 7431023 [2023-08-31 11:45:58,375 INFO L136 LiptonReduction]: Total number of compositions: 778 [2023-08-31 11:45:58,377 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:45:58,378 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;@288a27d3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:45:58,378 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:45:58,454 INFO L130 PetriNetUnfolder]: 32/523 cut-off events. [2023-08-31 11:45:58,454 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-08-31 11:45:58,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:45:58,454 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:45:58,454 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:45:58,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:45:58,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1569675135, now seen corresponding path program 1 times [2023-08-31 11:45:58,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:45:58,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030027552] [2023-08-31 11:45:58,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:45:58,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:45:58,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:45:58,481 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:45:58,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:45:58,509 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:45:58,509 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:45:58,509 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:45:58,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 11:45:58,510 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:45:58,512 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:45:58,513 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:45:58,513 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-31 11:45:58,770 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:45:58,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1425 places, 1495 transitions, 3130 flow [2023-08-31 11:45:59,506 INFO L130 PetriNetUnfolder]: 101/1613 cut-off events. [2023-08-31 11:45:59,506 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-08-31 11:45:59,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1699 conditions, 1613 events. 101/1613 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 9713 event pairs, 0 based on Foata normal form. 0/1241 useless extension candidates. Maximal degree in co-relation 1508. Up to 22 conditions per place. [2023-08-31 11:45:59,552 INFO L82 GeneralOperation]: Start removeDead. Operand has 1425 places, 1495 transitions, 3130 flow [2023-08-31 11:45:59,563 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1425 places, 1495 transitions, 3130 flow [2023-08-31 11:45:59,563 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:45:59,563 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1425 places, 1495 transitions, 3130 flow [2023-08-31 11:45:59,564 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1425 places, 1495 transitions, 3130 flow [2023-08-31 11:45:59,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1425 places, 1495 transitions, 3130 flow [2023-08-31 11:46:00,284 INFO L130 PetriNetUnfolder]: 101/1613 cut-off events. [2023-08-31 11:46:00,284 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-08-31 11:46:00,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1699 conditions, 1613 events. 101/1613 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 9713 event pairs, 0 based on Foata normal form. 0/1241 useless extension candidates. Maximal degree in co-relation 1508. Up to 22 conditions per place. [2023-08-31 11:46:00,553 INFO L119 LiptonReduction]: Number of co-enabled transitions 1943000 [2023-08-31 11:47:26,421 INFO L134 LiptonReduction]: Checked pairs total: 9282985 [2023-08-31 11:47:26,421 INFO L136 LiptonReduction]: Total number of compositions: 867 [2023-08-31 11:47:26,423 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:47:26,423 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;@288a27d3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:47:26,423 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:47:26,523 INFO L130 PetriNetUnfolder]: 39/615 cut-off events. [2023-08-31 11:47:26,523 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-08-31 11:47:26,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:47:26,523 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:47:26,524 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:47:26,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:47:26,524 INFO L85 PathProgramCache]: Analyzing trace with hash -2052983187, now seen corresponding path program 1 times [2023-08-31 11:47:26,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:47:26,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065257477] [2023-08-31 11:47:26,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:47:26,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:47:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:47:26,551 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:47:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:47:26,583 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:47:26,584 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:47:26,584 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:47:26,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 11:47:26,584 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:47:26,584 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:47:26,585 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:47:26,585 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-31 11:47:26,871 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:47:26,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1564 places, 1641 transitions, 3447 flow [2023-08-31 11:47:27,838 INFO L130 PetriNetUnfolder]: 111/1771 cut-off events. [2023-08-31 11:47:27,838 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2023-08-31 11:47:27,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1871 conditions, 1771 events. 111/1771 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 10860 event pairs, 0 based on Foata normal form. 0/1362 useless extension candidates. Maximal degree in co-relation 1679. Up to 24 conditions per place. [2023-08-31 11:47:27,890 INFO L82 GeneralOperation]: Start removeDead. Operand has 1564 places, 1641 transitions, 3447 flow [2023-08-31 11:47:27,906 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1564 places, 1641 transitions, 3447 flow [2023-08-31 11:47:27,906 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:47:27,906 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1564 places, 1641 transitions, 3447 flow [2023-08-31 11:47:27,906 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1564 places, 1641 transitions, 3447 flow [2023-08-31 11:47:27,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1564 places, 1641 transitions, 3447 flow [2023-08-31 11:47:28,797 INFO L130 PetriNetUnfolder]: 111/1771 cut-off events. [2023-08-31 11:47:28,798 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2023-08-31 11:47:28,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1871 conditions, 1771 events. 111/1771 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 10860 event pairs, 0 based on Foata normal form. 0/1362 useless extension candidates. Maximal degree in co-relation 1679. Up to 24 conditions per place. [2023-08-31 11:47:29,234 INFO L119 LiptonReduction]: Number of co-enabled transitions 2370170 [2023-08-31 11:48:56,442 INFO L134 LiptonReduction]: Checked pairs total: 11311576 [2023-08-31 11:48:56,442 INFO L136 LiptonReduction]: Total number of compositions: 949 [2023-08-31 11:48:56,444 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:48:56,444 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;@288a27d3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:48:56,444 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:48:56,566 INFO L130 PetriNetUnfolder]: 46/702 cut-off events. [2023-08-31 11:48:56,566 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2023-08-31 11:48:56,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:48:56,566 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:48:56,566 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:48:56,567 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:48:56,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1048373946, now seen corresponding path program 1 times [2023-08-31 11:48:56,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:48:56,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907102079] [2023-08-31 11:48:56,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:48:56,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:48:56,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:48:56,618 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:48:56,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:48:56,652 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:48:56,652 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:48:56,652 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:48:56,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 11:48:56,652 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:48:56,654 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:48:56,654 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:48:56,654 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-31 11:48:56,965 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:48:56,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1703 places, 1787 transitions, 3766 flow [2023-08-31 11:48:58,087 INFO L130 PetriNetUnfolder]: 121/1929 cut-off events. [2023-08-31 11:48:58,087 INFO L131 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2023-08-31 11:48:58,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2044 conditions, 1929 events. 121/1929 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 12044 event pairs, 0 based on Foata normal form. 0/1483 useless extension candidates. Maximal degree in co-relation 1851. Up to 26 conditions per place. [2023-08-31 11:48:58,155 INFO L82 GeneralOperation]: Start removeDead. Operand has 1703 places, 1787 transitions, 3766 flow [2023-08-31 11:48:58,174 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1703 places, 1787 transitions, 3766 flow [2023-08-31 11:48:58,174 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:48:58,175 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1703 places, 1787 transitions, 3766 flow [2023-08-31 11:48:58,175 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1703 places, 1787 transitions, 3766 flow [2023-08-31 11:48:58,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1703 places, 1787 transitions, 3766 flow [2023-08-31 11:48:59,767 INFO L130 PetriNetUnfolder]: 121/1929 cut-off events. [2023-08-31 11:48:59,768 INFO L131 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2023-08-31 11:48:59,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2044 conditions, 1929 events. 121/1929 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 12044 event pairs, 0 based on Foata normal form. 0/1483 useless extension candidates. Maximal degree in co-relation 1851. Up to 26 conditions per place. [2023-08-31 11:49:00,391 INFO L119 LiptonReduction]: Number of co-enabled transitions 2839680 [2023-08-31 11:50:23,241 INFO L134 LiptonReduction]: Checked pairs total: 13541224 [2023-08-31 11:50:23,241 INFO L136 LiptonReduction]: Total number of compositions: 1011 [2023-08-31 11:50:23,244 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:50:23,244 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;@288a27d3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:50:23,244 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:50:23,434 INFO L130 PetriNetUnfolder]: 53/796 cut-off events. [2023-08-31 11:50:23,434 INFO L131 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2023-08-31 11:50:23,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:50:23,434 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:50:23,434 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:50:23,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:50:23,435 INFO L85 PathProgramCache]: Analyzing trace with hash 2052502642, now seen corresponding path program 1 times [2023-08-31 11:50:23,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:50:23,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417555404] [2023-08-31 11:50:23,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:50:23,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:50:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:50:23,464 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:50:23,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:50:23,507 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:50:23,508 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:50:23,508 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:50:23,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 11:50:23,508 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:50:23,510 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:50:23,511 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:50:23,511 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-31 11:50:23,973 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:50:23,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1842 places, 1933 transitions, 4087 flow [2023-08-31 11:50:25,359 INFO L130 PetriNetUnfolder]: 131/2087 cut-off events. [2023-08-31 11:50:25,360 INFO L131 PetriNetUnfolder]: For 442/442 co-relation queries the response was YES. [2023-08-31 11:50:25,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2218 conditions, 2087 events. 131/2087 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 13258 event pairs, 0 based on Foata normal form. 0/1604 useless extension candidates. Maximal degree in co-relation 2024. Up to 28 conditions per place. [2023-08-31 11:50:25,442 INFO L82 GeneralOperation]: Start removeDead. Operand has 1842 places, 1933 transitions, 4087 flow [2023-08-31 11:50:25,463 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1842 places, 1933 transitions, 4087 flow [2023-08-31 11:50:25,463 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:50:25,463 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1842 places, 1933 transitions, 4087 flow [2023-08-31 11:50:25,464 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1842 places, 1933 transitions, 4087 flow [2023-08-31 11:50:25,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1842 places, 1933 transitions, 4087 flow [2023-08-31 11:50:26,688 INFO L130 PetriNetUnfolder]: 131/2087 cut-off events. [2023-08-31 11:50:26,688 INFO L131 PetriNetUnfolder]: For 442/442 co-relation queries the response was YES. [2023-08-31 11:50:26,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2218 conditions, 2087 events. 131/2087 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 13258 event pairs, 0 based on Foata normal form. 0/1604 useless extension candidates. Maximal degree in co-relation 2024. Up to 28 conditions per place. [2023-08-31 11:50:27,337 INFO L119 LiptonReduction]: Number of co-enabled transitions 3351530 [2023-08-31 11:51:32,189 INFO L134 LiptonReduction]: Checked pairs total: 15976637 [2023-08-31 11:51:32,190 INFO L136 LiptonReduction]: Total number of compositions: 1099 [2023-08-31 11:51:32,192 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:51:32,192 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;@288a27d3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:51:32,192 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:51:32,453 INFO L130 PetriNetUnfolder]: 60/887 cut-off events. [2023-08-31 11:51:32,453 INFO L131 PetriNetUnfolder]: For 442/442 co-relation queries the response was YES. [2023-08-31 11:51:32,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:51:32,453 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:51:32,453 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:51:32,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:51:32,454 INFO L85 PathProgramCache]: Analyzing trace with hash -839188135, now seen corresponding path program 1 times [2023-08-31 11:51:32,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:51:32,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988793415] [2023-08-31 11:51:32,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:51:32,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:51:32,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:51:32,489 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:51:32,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:51:32,519 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:51:32,520 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:51:32,520 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:51:32,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-31 11:51:32,520 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:51:32,521 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:51:32,521 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:51:32,522 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-08-31 11:51:32,770 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:51:32,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1981 places, 2079 transitions, 4410 flow [2023-08-31 11:51:34,454 INFO L130 PetriNetUnfolder]: 141/2245 cut-off events. [2023-08-31 11:51:34,455 INFO L131 PetriNetUnfolder]: For 546/546 co-relation queries the response was YES. [2023-08-31 11:51:34,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2393 conditions, 2245 events. 141/2245 cut-off events. For 546/546 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 14421 event pairs, 0 based on Foata normal form. 0/1725 useless extension candidates. Maximal degree in co-relation 2198. Up to 30 conditions per place. [2023-08-31 11:51:34,548 INFO L82 GeneralOperation]: Start removeDead. Operand has 1981 places, 2079 transitions, 4410 flow [2023-08-31 11:51:34,571 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1981 places, 2079 transitions, 4410 flow [2023-08-31 11:51:34,571 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:51:34,571 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1981 places, 2079 transitions, 4410 flow [2023-08-31 11:51:34,571 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1981 places, 2079 transitions, 4410 flow [2023-08-31 11:51:34,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1981 places, 2079 transitions, 4410 flow [2023-08-31 11:51:36,122 INFO L130 PetriNetUnfolder]: 141/2245 cut-off events. [2023-08-31 11:51:36,122 INFO L131 PetriNetUnfolder]: For 546/546 co-relation queries the response was YES. [2023-08-31 11:51:36,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2393 conditions, 2245 events. 141/2245 cut-off events. For 546/546 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 14421 event pairs, 0 based on Foata normal form. 0/1725 useless extension candidates. Maximal degree in co-relation 2198. Up to 30 conditions per place. [2023-08-31 11:51:36,741 INFO L119 LiptonReduction]: Number of co-enabled transitions 3905720 [2023-08-31 11:53:08,292 INFO L134 LiptonReduction]: Checked pairs total: 16378385 [2023-08-31 11:53:08,292 INFO L136 LiptonReduction]: Total number of compositions: 1186 [2023-08-31 11:53:08,294 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:53:08,294 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;@288a27d3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:53:08,294 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:53:08,569 INFO L130 PetriNetUnfolder]: 67/979 cut-off events. [2023-08-31 11:53:08,570 INFO L131 PetriNetUnfolder]: For 546/546 co-relation queries the response was YES. [2023-08-31 11:53:08,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:53:08,570 INFO L208 CegarLoopForPetriNet]: trace histogram [15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:53:08,570 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:53:08,570 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:53:08,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1705700386, now seen corresponding path program 1 times [2023-08-31 11:53:08,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:53:08,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087264290] [2023-08-31 11:53:08,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:53:08,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:53:08,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:53:08,602 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:53:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:53:08,633 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:53:08,633 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:53:08,634 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:53:08,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-31 11:53:08,634 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:53:08,634 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:53:08,634 WARN L233 ceAbstractionStarter]: 14 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:53:08,635 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 15 thread instances. [2023-08-31 11:53:08,910 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:53:08,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2120 places, 2225 transitions, 4735 flow [2023-08-31 11:53:10,751 INFO L130 PetriNetUnfolder]: 151/2403 cut-off events. [2023-08-31 11:53:10,751 INFO L131 PetriNetUnfolder]: For 665/665 co-relation queries the response was YES. [2023-08-31 11:53:10,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2569 conditions, 2403 events. 151/2403 cut-off events. For 665/665 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 15578 event pairs, 0 based on Foata normal form. 0/1846 useless extension candidates. Maximal degree in co-relation 2373. Up to 32 conditions per place. [2023-08-31 11:53:10,859 INFO L82 GeneralOperation]: Start removeDead. Operand has 2120 places, 2225 transitions, 4735 flow [2023-08-31 11:53:10,885 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2120 places, 2225 transitions, 4735 flow [2023-08-31 11:53:10,885 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:53:10,885 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2120 places, 2225 transitions, 4735 flow [2023-08-31 11:53:10,886 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2120 places, 2225 transitions, 4735 flow [2023-08-31 11:53:10,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2120 places, 2225 transitions, 4735 flow [2023-08-31 11:53:12,545 INFO L130 PetriNetUnfolder]: 151/2403 cut-off events. [2023-08-31 11:53:12,545 INFO L131 PetriNetUnfolder]: For 665/665 co-relation queries the response was YES. [2023-08-31 11:53:12,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2569 conditions, 2403 events. 151/2403 cut-off events. For 665/665 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 15578 event pairs, 0 based on Foata normal form. 0/1846 useless extension candidates. Maximal degree in co-relation 2373. Up to 32 conditions per place. [2023-08-31 11:53:13,430 INFO L119 LiptonReduction]: Number of co-enabled transitions 4502250 Killed by 15