./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eddb66a74cd149f880832378d52d5c02c94fd6efcf2d83aeade11bcdaaabe426 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 06:25:09,571 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 06:25:09,573 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 06:25:09,612 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 06:25:09,612 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 06:25:09,615 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 06:25:09,617 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 06:25:09,619 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 06:25:09,621 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 06:25:09,626 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 06:25:09,627 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 06:25:09,630 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 06:25:09,630 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 06:25:09,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 06:25:09,633 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 06:25:09,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 06:25:09,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 06:25:09,639 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 06:25:09,641 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 06:25:09,643 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 06:25:09,646 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 06:25:09,647 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 06:25:09,647 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 06:25:09,648 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 06:25:09,650 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 06:25:09,654 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 06:25:09,654 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 06:25:09,655 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 06:25:09,656 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 06:25:09,657 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 06:25:09,657 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 06:25:09,660 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 06:25:09,661 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 06:25:09,662 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 06:25:09,663 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 06:25:09,663 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 06:25:09,664 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 06:25:09,664 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 06:25:09,664 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 06:25:09,665 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 06:25:09,665 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 06:25:09,666 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 06:25:09,689 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 06:25:09,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 06:25:09,690 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 06:25:09,690 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 06:25:09,691 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 06:25:09,691 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 06:25:09,691 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 06:25:09,691 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 06:25:09,692 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 06:25:09,692 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 06:25:09,692 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 06:25:09,693 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 06:25:09,693 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 06:25:09,693 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 06:25:09,693 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 06:25:09,693 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 06:25:09,693 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 06:25:09,694 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 06:25:09,694 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 06:25:09,694 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 06:25:09,694 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 06:25:09,694 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 06:25:09,694 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 06:25:09,694 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 06:25:09,695 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 06:25:09,695 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 06:25:09,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:25:09,695 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 06:25:09,695 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 06:25:09,695 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 06:25:09,696 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 06:25:09,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 06:25:09,696 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 06:25:09,696 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 06:25:09,696 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 06:25:09,697 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 06:25:09,697 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 06:25:09,697 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eddb66a74cd149f880832378d52d5c02c94fd6efcf2d83aeade11bcdaaabe426 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 06:25:09,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 06:25:09,999 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 06:25:10,001 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 06:25:10,002 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 06:25:10,002 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 06:25:10,003 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_racing.i [2023-09-01 06:25:11,030 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 06:25:11,310 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 06:25:11,313 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_racing.i [2023-09-01 06:25:11,334 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1ba9671d/637b7732ecb441a7b874371048df85dd/FLAGe3f894874 [2023-09-01 06:25:11,592 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1ba9671d/637b7732ecb441a7b874371048df85dd [2023-09-01 06:25:11,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 06:25:11,595 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 06:25:11,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 06:25:11,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 06:25:11,599 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 06:25:11,602 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:25:11" (1/1) ... [2023-09-01 06:25:11,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a487c7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:25:11, skipping insertion in model container [2023-09-01 06:25:11,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:25:11" (1/1) ... [2023-09-01 06:25:11,608 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 06:25:11,638 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 06:25:11,823 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_racing.i[30176,30189] [2023-09-01 06:25:11,833 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:25:11,841 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 06:25:11,860 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_racing.i[30176,30189] [2023-09-01 06:25:11,864 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:25:11,887 INFO L208 MainTranslator]: Completed translation [2023-09-01 06:25:11,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:25:11 WrapperNode [2023-09-01 06:25:11,887 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 06:25:11,888 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 06:25:11,888 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 06:25:11,888 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 06:25:11,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:25:11" (1/1) ... [2023-09-01 06:25:11,901 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:25:11" (1/1) ... [2023-09-01 06:25:11,920 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 83 [2023-09-01 06:25:11,921 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 06:25:11,921 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 06:25:11,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 06:25:11,921 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 06:25:11,926 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:25:11" (1/1) ... [2023-09-01 06:25:11,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:25:11" (1/1) ... [2023-09-01 06:25:11,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:25:11" (1/1) ... [2023-09-01 06:25:11,928 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:25:11" (1/1) ... [2023-09-01 06:25:11,932 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:25:11" (1/1) ... [2023-09-01 06:25:11,934 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:25:11" (1/1) ... [2023-09-01 06:25:11,936 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:25:11" (1/1) ... [2023-09-01 06:25:11,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:25:11" (1/1) ... [2023-09-01 06:25:11,939 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 06:25:11,940 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 06:25:11,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 06:25:11,941 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 06:25:11,941 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:25:11" (1/1) ... [2023-09-01 06:25:11,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:25:11,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:25:11,966 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 06:25:11,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 06:25:12,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 06:25:12,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 06:25:12,013 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 06:25:12,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 06:25:12,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 06:25:12,013 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 06:25:12,013 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 06:25:12,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 06:25:12,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 06:25:12,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 06:25:12,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 06:25:12,015 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 06:25:12,133 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 06:25:12,135 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 06:25:12,329 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 06:25:12,335 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 06:25:12,335 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-09-01 06:25:12,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:25:12 BoogieIcfgContainer [2023-09-01 06:25:12,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 06:25:12,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 06:25:12,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 06:25:12,342 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 06:25:12,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 06:25:11" (1/3) ... [2023-09-01 06:25:12,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10ff1699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:25:12, skipping insertion in model container [2023-09-01 06:25:12,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:25:11" (2/3) ... [2023-09-01 06:25:12,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10ff1699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:25:12, skipping insertion in model container [2023-09-01 06:25:12,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:25:12" (3/3) ... [2023-09-01 06:25:12,344 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_01-simple_racing.i [2023-09-01 06:25:12,350 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 06:25:12,357 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 06:25:12,357 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-09-01 06:25:12,357 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 06:25:12,404 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 06:25:12,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 121 transitions, 250 flow [2023-09-01 06:25:12,470 INFO L130 PetriNetUnfolder]: 17/153 cut-off events. [2023-09-01 06:25:12,471 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 06:25:12,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 153 events. 17/153 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 336 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 77. Up to 4 conditions per place. [2023-09-01 06:25:12,477 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 121 transitions, 250 flow [2023-09-01 06:25:12,480 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 112 transitions, 229 flow [2023-09-01 06:25:12,483 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:25:12,489 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 112 transitions, 229 flow [2023-09-01 06:25:12,491 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 112 transitions, 229 flow [2023-09-01 06:25:12,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 112 transitions, 229 flow [2023-09-01 06:25:12,539 INFO L130 PetriNetUnfolder]: 16/144 cut-off events. [2023-09-01 06:25:12,539 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:25:12,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 144 events. 16/144 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 321 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 77. Up to 4 conditions per place. [2023-09-01 06:25:12,541 INFO L119 LiptonReduction]: Number of co-enabled transitions 3024 [2023-09-01 06:25:14,592 INFO L134 LiptonReduction]: Checked pairs total: 4972 [2023-09-01 06:25:14,593 INFO L136 LiptonReduction]: Total number of compositions: 99 [2023-09-01 06:25:14,613 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:25:14,618 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;@691271f5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:25:14,618 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:25:14,623 INFO L130 PetriNetUnfolder]: 3/28 cut-off events. [2023-09-01 06:25:14,623 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:25:14,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:25:14,623 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 06:25:14,624 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:25:14,627 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:25:14,627 INFO L85 PathProgramCache]: Analyzing trace with hash 727924958, now seen corresponding path program 1 times [2023-09-01 06:25:14,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:25:14,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816092714] [2023-09-01 06:25:14,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:25:14,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:25:14,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:25:14,709 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:25:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:25:14,738 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:25:14,739 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:25:14,740 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:25:14,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 06:25:14,741 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:25:14,743 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:25:14,743 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:25:14,744 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 06:25:14,781 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 06:25:14,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 159 transitions, 336 flow [2023-09-01 06:25:14,811 INFO L130 PetriNetUnfolder]: 31/259 cut-off events. [2023-09-01 06:25:14,811 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 06:25:14,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 259 events. 31/259 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 718 event pairs, 0 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 155. Up to 8 conditions per place. [2023-09-01 06:25:14,813 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 159 transitions, 336 flow [2023-09-01 06:25:14,814 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 159 transitions, 336 flow [2023-09-01 06:25:14,814 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:25:14,814 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 145 places, 159 transitions, 336 flow [2023-09-01 06:25:14,814 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 145 places, 159 transitions, 336 flow [2023-09-01 06:25:14,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 159 transitions, 336 flow [2023-09-01 06:25:14,835 INFO L130 PetriNetUnfolder]: 31/259 cut-off events. [2023-09-01 06:25:14,835 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 06:25:14,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 259 events. 31/259 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 718 event pairs, 0 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 155. Up to 8 conditions per place. [2023-09-01 06:25:14,841 INFO L119 LiptonReduction]: Number of co-enabled transitions 10008 [2023-09-01 06:25:17,554 INFO L134 LiptonReduction]: Checked pairs total: 26744 [2023-09-01 06:25:17,554 INFO L136 LiptonReduction]: Total number of compositions: 124 [2023-09-01 06:25:17,555 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:25:17,556 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;@691271f5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:25:17,556 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:25:17,561 INFO L130 PetriNetUnfolder]: 12/66 cut-off events. [2023-09-01 06:25:17,561 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 06:25:17,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:25:17,561 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 06:25:17,562 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:25:17,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:25:17,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1220561270, now seen corresponding path program 1 times [2023-09-01 06:25:17,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:25:17,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938608173] [2023-09-01 06:25:17,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:25:17,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:25:17,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:25:17,582 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:25:17,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:25:17,612 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:25:17,613 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:25:17,613 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:25:17,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 06:25:17,613 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:25:17,614 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:25:17,614 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:25:17,614 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 06:25:17,628 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 06:25:17,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 197 transitions, 424 flow [2023-09-01 06:25:17,667 INFO L130 PetriNetUnfolder]: 50/404 cut-off events. [2023-09-01 06:25:17,670 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 06:25:17,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 404 events. 50/404 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1293 event pairs, 1 based on Foata normal form. 0/318 useless extension candidates. Maximal degree in co-relation 267. Up to 16 conditions per place. [2023-09-01 06:25:17,679 INFO L82 GeneralOperation]: Start removeDead. Operand has 178 places, 197 transitions, 424 flow [2023-09-01 06:25:17,682 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 178 places, 197 transitions, 424 flow [2023-09-01 06:25:17,683 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:25:17,683 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 178 places, 197 transitions, 424 flow [2023-09-01 06:25:17,683 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 178 places, 197 transitions, 424 flow [2023-09-01 06:25:17,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 197 transitions, 424 flow [2023-09-01 06:25:17,724 INFO L130 PetriNetUnfolder]: 50/404 cut-off events. [2023-09-01 06:25:17,725 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 06:25:17,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 404 events. 50/404 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1293 event pairs, 1 based on Foata normal form. 0/318 useless extension candidates. Maximal degree in co-relation 267. Up to 16 conditions per place. [2023-09-01 06:25:17,748 INFO L119 LiptonReduction]: Number of co-enabled transitions 19224 [2023-09-01 06:25:20,751 INFO L134 LiptonReduction]: Checked pairs total: 56798 [2023-09-01 06:25:20,751 INFO L136 LiptonReduction]: Total number of compositions: 149 [2023-09-01 06:25:20,752 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:25:20,753 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;@691271f5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:25:20,753 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:25:20,761 INFO L130 PetriNetUnfolder]: 22/110 cut-off events. [2023-09-01 06:25:20,761 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 06:25:20,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:25:20,762 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 06:25:20,766 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:25:20,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:25:20,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1120924954, now seen corresponding path program 1 times [2023-09-01 06:25:20,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:25:20,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310401452] [2023-09-01 06:25:20,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:25:20,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:25:20,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:25:20,822 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:25:20,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:25:20,852 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:25:20,852 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:25:20,853 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:25:20,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 06:25:20,853 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:25:20,854 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:25:20,854 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:25:20,854 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 06:25:20,876 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 06:25:20,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 235 transitions, 514 flow [2023-09-01 06:25:20,961 INFO L130 PetriNetUnfolder]: 81/629 cut-off events. [2023-09-01 06:25:20,962 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 06:25:20,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 684 conditions, 629 events. 81/629 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2369 event pairs, 6 based on Foata normal form. 0/494 useless extension candidates. Maximal degree in co-relation 424. Up to 32 conditions per place. [2023-09-01 06:25:20,966 INFO L82 GeneralOperation]: Start removeDead. Operand has 211 places, 235 transitions, 514 flow [2023-09-01 06:25:20,970 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 211 places, 235 transitions, 514 flow [2023-09-01 06:25:20,971 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:25:20,971 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 211 places, 235 transitions, 514 flow [2023-09-01 06:25:20,971 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 211 places, 235 transitions, 514 flow [2023-09-01 06:25:20,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 235 transitions, 514 flow [2023-09-01 06:25:21,048 INFO L130 PetriNetUnfolder]: 81/629 cut-off events. [2023-09-01 06:25:21,048 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 06:25:21,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 684 conditions, 629 events. 81/629 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2369 event pairs, 6 based on Foata normal form. 0/494 useless extension candidates. Maximal degree in co-relation 424. Up to 32 conditions per place. [2023-09-01 06:25:21,072 INFO L119 LiptonReduction]: Number of co-enabled transitions 31248 [2023-09-01 06:25:23,677 INFO L134 LiptonReduction]: Checked pairs total: 86094 [2023-09-01 06:25:23,678 INFO L136 LiptonReduction]: Total number of compositions: 172 [2023-09-01 06:25:23,679 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:25:23,680 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;@691271f5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:25:23,680 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:25:23,693 INFO L130 PetriNetUnfolder]: 33/160 cut-off events. [2023-09-01 06:25:23,693 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-09-01 06:25:23,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:25:23,693 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 06:25:23,693 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:25:23,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:25:23,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1677664094, now seen corresponding path program 1 times [2023-09-01 06:25:23,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:25:23,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903774613] [2023-09-01 06:25:23,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:25:23,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:25:23,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:25:23,737 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:25:23,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:25:23,774 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:25:23,779 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:25:23,779 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:25:23,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 06:25:23,779 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:25:23,780 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:25:23,780 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:25:23,780 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 06:25:23,817 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 06:25:23,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 273 transitions, 606 flow [2023-09-01 06:25:23,987 INFO L130 PetriNetUnfolder]: 140/1018 cut-off events. [2023-09-01 06:25:23,987 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 06:25:24,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1129 conditions, 1018 events. 140/1018 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4657 event pairs, 23 based on Foata normal form. 0/802 useless extension candidates. Maximal degree in co-relation 674. Up to 80 conditions per place. [2023-09-01 06:25:24,000 INFO L82 GeneralOperation]: Start removeDead. Operand has 244 places, 273 transitions, 606 flow [2023-09-01 06:25:24,009 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 244 places, 273 transitions, 606 flow [2023-09-01 06:25:24,009 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:25:24,009 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 244 places, 273 transitions, 606 flow [2023-09-01 06:25:24,010 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 244 places, 273 transitions, 606 flow [2023-09-01 06:25:24,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 273 transitions, 606 flow [2023-09-01 06:25:24,170 INFO L130 PetriNetUnfolder]: 140/1018 cut-off events. [2023-09-01 06:25:24,171 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 06:25:24,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1129 conditions, 1018 events. 140/1018 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4657 event pairs, 23 based on Foata normal form. 0/802 useless extension candidates. Maximal degree in co-relation 674. Up to 80 conditions per place. [2023-09-01 06:25:24,213 INFO L119 LiptonReduction]: Number of co-enabled transitions 46080 [2023-09-01 06:25:27,123 INFO L134 LiptonReduction]: Checked pairs total: 131667 [2023-09-01 06:25:27,124 INFO L136 LiptonReduction]: Total number of compositions: 195 [2023-09-01 06:25:27,127 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:25:27,128 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;@691271f5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:25:27,129 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:25:27,141 INFO L130 PetriNetUnfolder]: 46/221 cut-off events. [2023-09-01 06:25:27,142 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-09-01 06:25:27,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:25:27,142 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:25:27,142 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:25:27,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:25:27,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1046913244, now seen corresponding path program 1 times [2023-09-01 06:25:27,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:25:27,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440403925] [2023-09-01 06:25:27,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:25:27,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:25:27,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:25:27,184 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:25:27,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:25:27,218 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:25:27,223 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:25:27,223 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:25:27,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 06:25:27,224 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:25:27,226 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:25:27,227 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:25:27,227 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 06:25:27,251 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 06:25:27,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 277 places, 311 transitions, 700 flow [2023-09-01 06:25:27,502 INFO L130 PetriNetUnfolder]: 263/1743 cut-off events. [2023-09-01 06:25:27,503 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 06:25:27,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1975 conditions, 1743 events. 263/1743 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 9903 event pairs, 72 based on Foata normal form. 0/1382 useless extension candidates. Maximal degree in co-relation 1117. Up to 192 conditions per place. [2023-09-01 06:25:27,520 INFO L82 GeneralOperation]: Start removeDead. Operand has 277 places, 311 transitions, 700 flow [2023-09-01 06:25:27,534 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 277 places, 311 transitions, 700 flow [2023-09-01 06:25:27,535 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:25:27,535 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 277 places, 311 transitions, 700 flow [2023-09-01 06:25:27,535 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 277 places, 311 transitions, 700 flow [2023-09-01 06:25:27,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 277 places, 311 transitions, 700 flow [2023-09-01 06:25:27,749 INFO L130 PetriNetUnfolder]: 263/1743 cut-off events. [2023-09-01 06:25:27,749 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 06:25:27,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1975 conditions, 1743 events. 263/1743 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 9903 event pairs, 72 based on Foata normal form. 0/1382 useless extension candidates. Maximal degree in co-relation 1117. Up to 192 conditions per place. [2023-09-01 06:25:27,860 INFO L119 LiptonReduction]: Number of co-enabled transitions 63720 [2023-09-01 06:25:31,044 INFO L134 LiptonReduction]: Checked pairs total: 209111 [2023-09-01 06:25:31,044 INFO L136 LiptonReduction]: Total number of compositions: 219 [2023-09-01 06:25:31,046 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:25:31,046 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;@691271f5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:25:31,047 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:25:31,069 INFO L130 PetriNetUnfolder]: 62/299 cut-off events. [2023-09-01 06:25:31,070 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-09-01 06:25:31,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:25:31,070 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:25:31,070 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:25:31,070 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:25:31,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1632880188, now seen corresponding path program 1 times [2023-09-01 06:25:31,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:25:31,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007708363] [2023-09-01 06:25:31,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:25:31,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:25:31,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:25:31,092 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:25:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:25:31,111 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:25:31,111 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:25:31,111 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:25:31,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 06:25:31,111 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:25:31,112 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:25:31,112 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:25:31,112 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 06:25:31,134 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 06:25:31,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 310 places, 349 transitions, 796 flow [2023-09-01 06:25:31,683 INFO L130 PetriNetUnfolder]: 530/3156 cut-off events. [2023-09-01 06:25:31,684 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 06:25:31,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3654 conditions, 3156 events. 530/3156 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 21916 event pairs, 201 based on Foata normal form. 0/2522 useless extension candidates. Maximal degree in co-relation 1961. Up to 448 conditions per place. [2023-09-01 06:25:31,717 INFO L82 GeneralOperation]: Start removeDead. Operand has 310 places, 349 transitions, 796 flow [2023-09-01 06:25:31,736 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 310 places, 349 transitions, 796 flow [2023-09-01 06:25:31,737 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:25:31,737 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 310 places, 349 transitions, 796 flow [2023-09-01 06:25:31,737 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 310 places, 349 transitions, 796 flow [2023-09-01 06:25:31,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 310 places, 349 transitions, 796 flow [2023-09-01 06:25:32,224 INFO L130 PetriNetUnfolder]: 530/3156 cut-off events. [2023-09-01 06:25:32,224 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 06:25:32,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3654 conditions, 3156 events. 530/3156 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 21916 event pairs, 201 based on Foata normal form. 0/2522 useless extension candidates. Maximal degree in co-relation 1961. Up to 448 conditions per place. [2023-09-01 06:25:32,402 INFO L119 LiptonReduction]: Number of co-enabled transitions 84168 [2023-09-01 06:25:35,289 INFO L134 LiptonReduction]: Checked pairs total: 276945 [2023-09-01 06:25:35,289 INFO L136 LiptonReduction]: Total number of compositions: 248 [2023-09-01 06:25:35,291 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:25:35,291 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;@691271f5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:25:35,291 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:25:35,317 INFO L130 PetriNetUnfolder]: 83/399 cut-off events. [2023-09-01 06:25:35,317 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-09-01 06:25:35,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:25:35,318 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:25:35,318 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:25:35,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:25:35,318 INFO L85 PathProgramCache]: Analyzing trace with hash 2088820677, now seen corresponding path program 1 times [2023-09-01 06:25:35,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:25:35,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936524120] [2023-09-01 06:25:35,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:25:35,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:25:35,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:25:35,334 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:25:35,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:25:35,362 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:25:35,362 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:25:35,362 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:25:35,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 06:25:35,363 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:25:35,363 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:25:35,363 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:25:35,363 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 06:25:35,388 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 06:25:35,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 343 places, 387 transitions, 894 flow [2023-09-01 06:25:36,558 INFO L130 PetriNetUnfolder]: 1117/5977 cut-off events. [2023-09-01 06:25:36,559 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 06:25:36,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7062 conditions, 5977 events. 1117/5977 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 49507 event pairs, 522 based on Foata normal form. 0/4814 useless extension candidates. Maximal degree in co-relation 3638. Up to 1024 conditions per place. [2023-09-01 06:25:36,627 INFO L82 GeneralOperation]: Start removeDead. Operand has 343 places, 387 transitions, 894 flow [2023-09-01 06:25:36,666 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 343 places, 387 transitions, 894 flow [2023-09-01 06:25:36,667 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:25:36,667 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 343 places, 387 transitions, 894 flow [2023-09-01 06:25:36,667 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 343 places, 387 transitions, 894 flow [2023-09-01 06:25:36,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 343 places, 387 transitions, 894 flow [2023-09-01 06:25:37,754 INFO L130 PetriNetUnfolder]: 1117/5977 cut-off events. [2023-09-01 06:25:37,755 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 06:25:37,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7062 conditions, 5977 events. 1117/5977 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 49507 event pairs, 522 based on Foata normal form. 0/4814 useless extension candidates. Maximal degree in co-relation 3638. Up to 1024 conditions per place. [2023-09-01 06:25:38,036 INFO L119 LiptonReduction]: Number of co-enabled transitions 107424 [2023-09-01 06:25:40,861 INFO L134 LiptonReduction]: Checked pairs total: 320354 [2023-09-01 06:25:40,862 INFO L136 LiptonReduction]: Total number of compositions: 274 [2023-09-01 06:25:40,863 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:25:40,863 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;@691271f5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:25:40,863 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:25:40,902 INFO L130 PetriNetUnfolder]: 113/533 cut-off events. [2023-09-01 06:25:40,903 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-09-01 06:25:40,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:25:40,903 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:25:40,903 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:25:40,904 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:25:40,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1250307100, now seen corresponding path program 1 times [2023-09-01 06:25:40,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:25:40,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416965492] [2023-09-01 06:25:40,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:25:40,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:25:40,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:25:40,930 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:25:40,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:25:40,944 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:25:40,945 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:25:40,945 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:25:40,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 06:25:40,945 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:25:40,945 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:25:40,946 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:25:40,946 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 06:25:40,970 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 06:25:40,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 376 places, 425 transitions, 994 flow [2023-09-01 06:25:43,605 INFO L130 PetriNetUnfolder]: 2408/11678 cut-off events. [2023-09-01 06:25:43,605 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 06:25:43,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14055 conditions, 11678 events. 2408/11678 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 113357 event pairs, 1291 based on Foata normal form. 0/9474 useless extension candidates. Maximal degree in co-relation 7044. Up to 2304 conditions per place. [2023-09-01 06:25:43,746 INFO L82 GeneralOperation]: Start removeDead. Operand has 376 places, 425 transitions, 994 flow [2023-09-01 06:25:43,826 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 376 places, 425 transitions, 994 flow [2023-09-01 06:25:43,826 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:25:43,827 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 376 places, 425 transitions, 994 flow [2023-09-01 06:25:43,827 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 376 places, 425 transitions, 994 flow [2023-09-01 06:25:43,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 376 places, 425 transitions, 994 flow [2023-09-01 06:25:46,233 INFO L130 PetriNetUnfolder]: 2408/11678 cut-off events. [2023-09-01 06:25:46,233 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 06:25:46,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14055 conditions, 11678 events. 2408/11678 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 113357 event pairs, 1291 based on Foata normal form. 0/9474 useless extension candidates. Maximal degree in co-relation 7044. Up to 2304 conditions per place. [2023-09-01 06:25:46,785 INFO L119 LiptonReduction]: Number of co-enabled transitions 133488 [2023-09-01 06:25:50,468 INFO L134 LiptonReduction]: Checked pairs total: 457198 [2023-09-01 06:25:50,468 INFO L136 LiptonReduction]: Total number of compositions: 294 [2023-09-01 06:25:50,469 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:25:50,470 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;@691271f5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:25:50,470 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:25:50,593 INFO L130 PetriNetUnfolder]: 159/727 cut-off events. [2023-09-01 06:25:50,594 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-09-01 06:25:50,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:25:50,594 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:25:50,594 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:25:50,594 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:25:50,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1342551510, now seen corresponding path program 1 times [2023-09-01 06:25:50,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:25:50,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917372755] [2023-09-01 06:25:50,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:25:50,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:25:50,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:25:50,609 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:25:50,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:25:50,629 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:25:50,629 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:25:50,630 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:25:50,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 06:25:50,630 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:25:50,630 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:25:50,630 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:25:50,630 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 06:25:50,651 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 06:25:50,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 409 places, 463 transitions, 1096 flow [2023-09-01 06:25:56,172 INFO L130 PetriNetUnfolder]: 5235/23267 cut-off events. [2023-09-01 06:25:56,173 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 06:25:56,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28473 conditions, 23267 events. 5235/23267 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 256213 event pairs, 3084 based on Foata normal form. 0/18998 useless extension candidates. Maximal degree in co-relation 14035. Up to 5120 conditions per place. [2023-09-01 06:25:56,542 INFO L82 GeneralOperation]: Start removeDead. Operand has 409 places, 463 transitions, 1096 flow [2023-09-01 06:25:56,750 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 409 places, 463 transitions, 1096 flow [2023-09-01 06:25:56,750 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:25:56,750 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 409 places, 463 transitions, 1096 flow [2023-09-01 06:25:56,751 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 409 places, 463 transitions, 1096 flow [2023-09-01 06:25:56,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 409 places, 463 transitions, 1096 flow [2023-09-01 06:26:02,190 INFO L130 PetriNetUnfolder]: 5235/23267 cut-off events. [2023-09-01 06:26:02,190 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 06:26:02,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28473 conditions, 23267 events. 5235/23267 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 256213 event pairs, 3084 based on Foata normal form. 0/18998 useless extension candidates. Maximal degree in co-relation 14035. Up to 5120 conditions per place. [2023-09-01 06:26:03,667 INFO L119 LiptonReduction]: Number of co-enabled transitions 162360 [2023-09-01 06:26:08,295 INFO L134 LiptonReduction]: Checked pairs total: 568310 [2023-09-01 06:26:08,295 INFO L136 LiptonReduction]: Total number of compositions: 321 [2023-09-01 06:26:08,297 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:26:08,297 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@691271f5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:26:08,297 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:26:08,390 INFO L130 PetriNetUnfolder]: 234/1016 cut-off events. [2023-09-01 06:26:08,391 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-09-01 06:26:08,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:26:08,391 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:26:08,391 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:26:08,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:26:08,391 INFO L85 PathProgramCache]: Analyzing trace with hash 788694651, now seen corresponding path program 1 times [2023-09-01 06:26:08,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:26:08,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900363049] [2023-09-01 06:26:08,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:26:08,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:26:08,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:26:08,409 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:26:08,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:26:08,423 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:26:08,423 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:26:08,423 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:26:08,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 06:26:08,423 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:26:08,424 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:26:08,424 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:26:08,424 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 06:26:08,452 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 06:26:08,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 442 places, 501 transitions, 1200 flow [2023-09-01 06:26:20,823 INFO L130 PetriNetUnfolder]: 11390/46888 cut-off events. [2023-09-01 06:26:20,823 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 06:26:21,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58252 conditions, 46888 events. 11390/46888 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 771. Compared 574969 event pairs, 7181 based on Foata normal form. 0/38506 useless extension candidates. Maximal degree in co-relation 28451. Up to 11264 conditions per place. [2023-09-01 06:26:21,759 INFO L82 GeneralOperation]: Start removeDead. Operand has 442 places, 501 transitions, 1200 flow [2023-09-01 06:26:22,419 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 442 places, 501 transitions, 1200 flow [2023-09-01 06:26:22,419 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:26:22,419 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 442 places, 501 transitions, 1200 flow [2023-09-01 06:26:22,419 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 442 places, 501 transitions, 1200 flow [2023-09-01 06:26:22,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 442 places, 501 transitions, 1200 flow [2023-09-01 06:26:34,399 INFO L130 PetriNetUnfolder]: 11390/46888 cut-off events. [2023-09-01 06:26:34,400 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 06:26:35,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58252 conditions, 46888 events. 11390/46888 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 771. Compared 574969 event pairs, 7181 based on Foata normal form. 0/38506 useless extension candidates. Maximal degree in co-relation 28451. Up to 11264 conditions per place. [2023-09-01 06:26:38,824 INFO L119 LiptonReduction]: Number of co-enabled transitions 194040 [2023-09-01 06:26:42,698 INFO L134 LiptonReduction]: Checked pairs total: 607959 [2023-09-01 06:26:42,698 INFO L136 LiptonReduction]: Total number of compositions: 345 [2023-09-01 06:26:42,699 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:26:42,699 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;@691271f5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:26:42,700 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:26:42,853 INFO L130 PetriNetUnfolder]: 360/1452 cut-off events. [2023-09-01 06:26:42,853 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-09-01 06:26:42,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:26:42,854 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:26:42,854 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:26:42,854 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:26:42,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1224776009, now seen corresponding path program 1 times [2023-09-01 06:26:42,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:26:42,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998475729] [2023-09-01 06:26:42,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:26:42,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:26:42,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:26:42,874 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:26:42,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:26:42,900 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:26:42,900 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:26:42,900 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:26:42,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 06:26:42,901 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:26:42,903 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:26:42,903 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:26:42,903 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 06:26:42,935 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 06:26:42,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 475 places, 539 transitions, 1306 flow [2023-09-01 06:27:11,500 INFO L130 PetriNetUnfolder]: 24713/95085 cut-off events. [2023-09-01 06:27:11,501 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 06:27:15,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119776 conditions, 95085 events. 24713/95085 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1482. Compared 1276671 event pairs, 16398 based on Foata normal form. 0/78494 useless extension candidates. Maximal degree in co-relation 58228. Up to 24576 conditions per place. [2023-09-01 06:27:15,074 INFO L82 GeneralOperation]: Start removeDead. Operand has 475 places, 539 transitions, 1306 flow [2023-09-01 06:27:16,928 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 475 places, 539 transitions, 1306 flow [2023-09-01 06:27:16,929 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:27:16,929 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 475 places, 539 transitions, 1306 flow [2023-09-01 06:27:16,929 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 475 places, 539 transitions, 1306 flow [2023-09-01 06:27:16,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 475 places, 539 transitions, 1306 flow [2023-09-01 06:27:43,874 INFO L130 PetriNetUnfolder]: 24713/95085 cut-off events. [2023-09-01 06:27:43,875 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 06:27:48,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119776 conditions, 95085 events. 24713/95085 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1482. Compared 1276671 event pairs, 16398 based on Foata normal form. 0/78494 useless extension candidates. Maximal degree in co-relation 58228. Up to 24576 conditions per place. [2023-09-01 06:27:57,207 INFO L119 LiptonReduction]: Number of co-enabled transitions 228528 [2023-09-01 06:28:01,443 INFO L134 LiptonReduction]: Checked pairs total: 809890 [2023-09-01 06:28:01,443 INFO L136 LiptonReduction]: Total number of compositions: 373 [2023-09-01 06:28:01,444 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:28:01,444 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;@691271f5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:28:01,445 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:28:01,644 INFO L130 PetriNetUnfolder]: 572/2125 cut-off events. [2023-09-01 06:28:01,644 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-09-01 06:28:01,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:28:01,644 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:28:01,645 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:28:01,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:28:01,645 INFO L85 PathProgramCache]: Analyzing trace with hash -247346666, now seen corresponding path program 1 times [2023-09-01 06:28:01,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:28:01,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517812714] [2023-09-01 06:28:01,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:28:01,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:28:01,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:28:01,678 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:28:01,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:28:01,708 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:28:01,708 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:28:01,709 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:28:01,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 06:28:01,709 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:28:01,711 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:28:01,711 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:28:01,711 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 06:28:01,741 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 06:28:01,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 508 places, 577 transitions, 1414 flow [2023-09-01 06:29:07,812 INFO L130 PetriNetUnfolder]: 53396/193458 cut-off events. [2023-09-01 06:29:07,812 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 06:29:20,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246837 conditions, 193458 events. 53396/193458 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2893. Compared 2838927 event pairs, 36879 based on Foata normal form. 0/160466 useless extension candidates. Maximal degree in co-relation 119752. Up to 53248 conditions per place. [2023-09-01 06:29:20,035 INFO L82 GeneralOperation]: Start removeDead. Operand has 508 places, 577 transitions, 1414 flow [2023-09-01 06:29:25,357 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 508 places, 577 transitions, 1414 flow [2023-09-01 06:29:25,358 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:29:25,358 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 508 places, 577 transitions, 1414 flow [2023-09-01 06:29:25,358 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 508 places, 577 transitions, 1414 flow [2023-09-01 06:29:25,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 508 places, 577 transitions, 1414 flow [2023-09-01 06:30:28,774 INFO L130 PetriNetUnfolder]: 53396/193458 cut-off events. [2023-09-01 06:30:28,775 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 06:30:39,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246837 conditions, 193458 events. 53396/193458 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2893. Compared 2838927 event pairs, 36879 based on Foata normal form. 0/160466 useless extension candidates. Maximal degree in co-relation 119752. Up to 53248 conditions per place. [2023-09-01 06:31:04,537 INFO L119 LiptonReduction]: Number of co-enabled transitions 265824 [2023-09-01 06:31:08,571 INFO L134 LiptonReduction]: Checked pairs total: 831643 [2023-09-01 06:31:08,572 INFO L136 LiptonReduction]: Total number of compositions: 393 [2023-09-01 06:31:08,573 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:31:08,573 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;@691271f5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:31:08,574 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:31:08,966 INFO L130 PetriNetUnfolder]: 926/3171 cut-off events. [2023-09-01 06:31:08,966 INFO L131 PetriNetUnfolder]: For 1672/1672 co-relation queries the response was YES. [2023-09-01 06:31:08,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:31:08,966 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:31:08,966 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:31:08,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:31:08,967 INFO L85 PathProgramCache]: Analyzing trace with hash 987442964, now seen corresponding path program 1 times [2023-09-01 06:31:08,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:31:08,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682562036] [2023-09-01 06:31:08,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:31:08,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:31:08,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:31:08,999 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:31:09,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:31:09,017 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:31:09,017 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:31:09,018 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:31:09,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 06:31:09,018 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:31:09,018 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:31:09,018 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:31:09,018 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-09-01 06:31:09,046 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-09-01 06:31:09,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 541 places, 615 transitions, 1524 flow