./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_21-deref_read_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_21-deref_read_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cb010ae024b402436affeb854f96a5f9e0df3d8ec2cfe8b3a7f33676b7169a2c --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 10:55:58,936 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 10:55:58,939 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 10:55:58,981 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 10:55:58,981 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 10:55:58,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 10:55:58,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 10:55:58,989 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 10:55:58,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 10:55:58,995 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 10:55:58,996 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 10:55:58,998 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 10:55:58,999 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 10:55:59,000 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 10:55:59,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 10:55:59,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 10:55:59,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 10:55:59,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 10:55:59,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 10:55:59,015 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 10:55:59,016 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 10:55:59,022 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 10:55:59,023 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 10:55:59,023 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 10:55:59,030 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 10:55:59,030 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 10:55:59,030 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 10:55:59,032 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 10:55:59,033 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 10:55:59,034 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 10:55:59,034 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 10:55:59,035 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 10:55:59,037 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 10:55:59,037 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 10:55:59,038 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 10:55:59,038 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 10:55:59,039 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 10:55:59,039 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 10:55:59,040 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 10:55:59,040 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 10:55:59,041 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 10:55:59,043 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 10:55:59,071 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 10:55:59,071 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 10:55:59,073 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 10:55:59,073 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 10:55:59,074 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 10:55:59,074 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 10:55:59,074 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 10:55:59,074 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 10:55:59,075 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 10:55:59,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 10:55:59,076 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 10:55:59,076 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 10:55:59,076 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 10:55:59,076 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 10:55:59,076 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 10:55:59,077 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 10:55:59,077 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 10:55:59,077 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 10:55:59,077 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 10:55:59,077 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 10:55:59,078 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 10:55:59,078 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 10:55:59,078 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 10:55:59,078 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 10:55:59,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 10:55:59,079 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 10:55:59,079 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 10:55:59,079 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 10:55:59,079 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 10:55:59,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 10:55:59,080 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 10:55:59,080 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 10:55:59,080 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 10:55:59,080 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 10:55:59,080 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 10:55:59,081 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb010ae024b402436affeb854f96a5f9e0df3d8ec2cfe8b3a7f33676b7169a2c Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 10:55:59,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 10:55:59,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 10:55:59,409 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 10:55:59,410 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 10:55:59,410 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 10:55:59,411 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_21-deref_read_racing.i [2023-09-01 10:56:00,457 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 10:56:00,679 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 10:56:00,680 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_21-deref_read_racing.i [2023-09-01 10:56:00,690 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85b0ec75c/632e2a3916494233be08019d8c61357c/FLAG655a37af4 [2023-09-01 10:56:00,705 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85b0ec75c/632e2a3916494233be08019d8c61357c [2023-09-01 10:56:00,707 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 10:56:00,708 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 10:56:00,712 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 10:56:00,713 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 10:56:00,716 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 10:56:00,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 10:56:00" (1/1) ... [2023-09-01 10:56:00,718 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@368c4891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:56:00, skipping insertion in model container [2023-09-01 10:56:00,718 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 10:56:00" (1/1) ... [2023-09-01 10:56:00,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 10:56:00,753 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 10:56:00,969 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_21-deref_read_racing.i[30176,30189] [2023-09-01 10:56:00,995 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 10:56:01,009 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 10:56:01,044 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_21-deref_read_racing.i[30176,30189] [2023-09-01 10:56:01,049 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 10:56:01,085 INFO L208 MainTranslator]: Completed translation [2023-09-01 10:56:01,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:56:01 WrapperNode [2023-09-01 10:56:01,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 10:56:01,087 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 10:56:01,087 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 10:56:01,087 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 10:56:01,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:56:01" (1/1) ... [2023-09-01 10:56:01,122 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:56:01" (1/1) ... [2023-09-01 10:56:01,147 INFO L138 Inliner]: procedures = 170, calls = 35, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2023-09-01 10:56:01,147 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 10:56:01,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 10:56:01,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 10:56:01,149 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 10:56:01,154 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:56:01" (1/1) ... [2023-09-01 10:56:01,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:56:01" (1/1) ... [2023-09-01 10:56:01,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:56:01" (1/1) ... [2023-09-01 10:56:01,157 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:56:01" (1/1) ... [2023-09-01 10:56:01,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:56:01" (1/1) ... [2023-09-01 10:56:01,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:56:01" (1/1) ... [2023-09-01 10:56:01,183 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:56:01" (1/1) ... [2023-09-01 10:56:01,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:56:01" (1/1) ... [2023-09-01 10:56:01,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 10:56:01,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 10:56:01,197 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 10:56:01,197 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 10:56:01,197 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:56:01" (1/1) ... [2023-09-01 10:56:01,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 10:56:01,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 10:56:01,235 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 10:56:01,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 10:56:01,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 10:56:01,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 10:56:01,287 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 10:56:01,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 10:56:01,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 10:56:01,288 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 10:56:01,288 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 10:56:01,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 10:56:01,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 10:56:01,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 10:56:01,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 10:56:01,290 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 10:56:01,445 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 10:56:01,451 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 10:56:01,639 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 10:56:01,645 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 10:56:01,645 INFO L302 CfgBuilder]: Removed 9 assume(true) statements. [2023-09-01 10:56:01,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 10:56:01 BoogieIcfgContainer [2023-09-01 10:56:01,647 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 10:56:01,648 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 10:56:01,648 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 10:56:01,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 10:56:01,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 10:56:00" (1/3) ... [2023-09-01 10:56:01,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@740a68f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 10:56:01, skipping insertion in model container [2023-09-01 10:56:01,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:56:01" (2/3) ... [2023-09-01 10:56:01,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@740a68f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 10:56:01, skipping insertion in model container [2023-09-01 10:56:01,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 10:56:01" (3/3) ... [2023-09-01 10:56:01,653 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_21-deref_read_racing.i [2023-09-01 10:56:01,660 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 10:56:01,669 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 10:56:01,669 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 10:56:01,669 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 10:56:01,718 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 10:56:01,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 97 transitions, 199 flow [2023-09-01 10:56:01,793 INFO L130 PetriNetUnfolder]: 14/125 cut-off events. [2023-09-01 10:56:01,793 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 10:56:01,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 125 events. 14/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 265 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 65. Up to 4 conditions per place. [2023-09-01 10:56:01,798 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 97 transitions, 199 flow [2023-09-01 10:56:01,804 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 97 transitions, 199 flow [2023-09-01 10:56:01,808 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:56:01,827 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 97 transitions, 199 flow [2023-09-01 10:56:01,836 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 97 transitions, 199 flow [2023-09-01 10:56:01,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 97 transitions, 199 flow [2023-09-01 10:56:01,891 INFO L130 PetriNetUnfolder]: 14/125 cut-off events. [2023-09-01 10:56:01,896 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 10:56:01,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 125 events. 14/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 265 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 65. Up to 4 conditions per place. [2023-09-01 10:56:01,899 INFO L119 LiptonReduction]: Number of co-enabled transitions 2176 [2023-09-01 10:56:04,675 INFO L134 LiptonReduction]: Checked pairs total: 3921 [2023-09-01 10:56:04,675 INFO L136 LiptonReduction]: Total number of compositions: 82 [2023-09-01 10:56:04,687 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:56:04,692 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:56:04,693 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:56:04,697 INFO L130 PetriNetUnfolder]: 2/20 cut-off events. [2023-09-01 10:56:04,697 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 10:56:04,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:56:04,698 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 10:56:04,699 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:56:04,703 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:56:04,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1609564972, now seen corresponding path program 1 times [2023-09-01 10:56:04,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:56:04,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546835736] [2023-09-01 10:56:04,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:56:04,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:56:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:04,847 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:56:04,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:04,911 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:56:04,913 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:56:04,914 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:56:04,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 10:56:04,922 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:56:04,928 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:56:04,928 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:56:04,929 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 10:56:04,955 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 10:56:04,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 130 transitions, 272 flow [2023-09-01 10:56:05,031 INFO L130 PetriNetUnfolder]: 24/191 cut-off events. [2023-09-01 10:56:05,032 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 10:56:05,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 191 events. 24/191 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 501 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 126. Up to 6 conditions per place. [2023-09-01 10:56:05,037 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 130 transitions, 272 flow [2023-09-01 10:56:05,039 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 130 transitions, 272 flow [2023-09-01 10:56:05,039 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:56:05,039 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 119 places, 130 transitions, 272 flow [2023-09-01 10:56:05,040 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 119 places, 130 transitions, 272 flow [2023-09-01 10:56:05,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 130 transitions, 272 flow [2023-09-01 10:56:05,068 INFO L130 PetriNetUnfolder]: 24/191 cut-off events. [2023-09-01 10:56:05,068 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 10:56:05,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 191 events. 24/191 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 501 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 126. Up to 6 conditions per place. [2023-09-01 10:56:05,074 INFO L119 LiptonReduction]: Number of co-enabled transitions 6464 [2023-09-01 10:56:07,589 INFO L134 LiptonReduction]: Checked pairs total: 13307 [2023-09-01 10:56:07,589 INFO L136 LiptonReduction]: Total number of compositions: 102 [2023-09-01 10:56:07,591 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:56:07,592 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:56:07,593 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:56:07,598 INFO L130 PetriNetUnfolder]: 10/49 cut-off events. [2023-09-01 10:56:07,598 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 10:56:07,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:56:07,598 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 10:56:07,598 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:56:07,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:56:07,599 INFO L85 PathProgramCache]: Analyzing trace with hash 687650153, now seen corresponding path program 1 times [2023-09-01 10:56:07,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:56:07,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640519407] [2023-09-01 10:56:07,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:56:07,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:56:07,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:07,629 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:56:07,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:07,662 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:56:07,667 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:56:07,667 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:56:07,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 10:56:07,668 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:56:07,668 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:56:07,669 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:56:07,669 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 10:56:07,690 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 10:56:07,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 163 transitions, 347 flow [2023-09-01 10:56:07,735 INFO L130 PetriNetUnfolder]: 34/257 cut-off events. [2023-09-01 10:56:07,735 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-09-01 10:56:07,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 257 events. 34/257 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 734 event pairs, 0 based on Foata normal form. 0/215 useless extension candidates. Maximal degree in co-relation 195. Up to 8 conditions per place. [2023-09-01 10:56:07,738 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 163 transitions, 347 flow [2023-09-01 10:56:07,740 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 148 places, 163 transitions, 347 flow [2023-09-01 10:56:07,744 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:56:07,744 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 148 places, 163 transitions, 347 flow [2023-09-01 10:56:07,744 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 148 places, 163 transitions, 347 flow [2023-09-01 10:56:07,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 163 transitions, 347 flow [2023-09-01 10:56:07,767 INFO L130 PetriNetUnfolder]: 34/257 cut-off events. [2023-09-01 10:56:07,768 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-09-01 10:56:07,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 257 events. 34/257 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 734 event pairs, 0 based on Foata normal form. 0/215 useless extension candidates. Maximal degree in co-relation 195. Up to 8 conditions per place. [2023-09-01 10:56:07,777 INFO L119 LiptonReduction]: Number of co-enabled transitions 12864 [2023-09-01 10:56:10,191 INFO L134 LiptonReduction]: Checked pairs total: 27808 [2023-09-01 10:56:10,192 INFO L136 LiptonReduction]: Total number of compositions: 120 [2023-09-01 10:56:10,194 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:56:10,195 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:56:10,195 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:56:10,202 INFO L130 PetriNetUnfolder]: 18/77 cut-off events. [2023-09-01 10:56:10,202 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-09-01 10:56:10,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:56:10,202 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 10:56:10,203 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:56:10,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:56:10,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1694388675, now seen corresponding path program 1 times [2023-09-01 10:56:10,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:56:10,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901500981] [2023-09-01 10:56:10,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:56:10,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:56:10,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:10,229 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:56:10,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:10,249 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:56:10,250 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:56:10,250 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:56:10,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 10:56:10,250 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:56:10,251 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:56:10,251 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:56:10,251 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 10:56:10,268 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 10:56:10,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 196 transitions, 424 flow [2023-09-01 10:56:10,302 INFO L130 PetriNetUnfolder]: 44/323 cut-off events. [2023-09-01 10:56:10,302 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-09-01 10:56:10,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346 conditions, 323 events. 44/323 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 978 event pairs, 0 based on Foata normal form. 0/269 useless extension candidates. Maximal degree in co-relation 265. Up to 10 conditions per place. [2023-09-01 10:56:10,305 INFO L82 GeneralOperation]: Start removeDead. Operand has 177 places, 196 transitions, 424 flow [2023-09-01 10:56:10,308 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 177 places, 196 transitions, 424 flow [2023-09-01 10:56:10,308 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:56:10,308 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 177 places, 196 transitions, 424 flow [2023-09-01 10:56:10,308 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 177 places, 196 transitions, 424 flow [2023-09-01 10:56:10,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 196 transitions, 424 flow [2023-09-01 10:56:10,339 INFO L130 PetriNetUnfolder]: 44/323 cut-off events. [2023-09-01 10:56:10,339 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-09-01 10:56:10,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346 conditions, 323 events. 44/323 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 978 event pairs, 0 based on Foata normal form. 0/269 useless extension candidates. Maximal degree in co-relation 265. Up to 10 conditions per place. [2023-09-01 10:56:10,366 INFO L119 LiptonReduction]: Number of co-enabled transitions 21376 [2023-09-01 10:56:12,945 INFO L134 LiptonReduction]: Checked pairs total: 49294 [2023-09-01 10:56:12,946 INFO L136 LiptonReduction]: Total number of compositions: 142 [2023-09-01 10:56:12,947 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:56:12,948 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:56:12,949 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:56:12,957 INFO L130 PetriNetUnfolder]: 26/105 cut-off events. [2023-09-01 10:56:12,957 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-09-01 10:56:12,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:56:12,958 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 10:56:12,958 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:56:12,958 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:56:12,959 INFO L85 PathProgramCache]: Analyzing trace with hash 449457686, now seen corresponding path program 1 times [2023-09-01 10:56:12,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:56:12,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168645999] [2023-09-01 10:56:12,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:56:12,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:56:12,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:12,984 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:56:13,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:13,036 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:56:13,036 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:56:13,039 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:56:13,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 10:56:13,039 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:56:13,040 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:56:13,040 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:56:13,040 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 10:56:13,062 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 10:56:13,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 229 transitions, 503 flow [2023-09-01 10:56:13,107 INFO L130 PetriNetUnfolder]: 54/389 cut-off events. [2023-09-01 10:56:13,107 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-09-01 10:56:13,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 420 conditions, 389 events. 54/389 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1207 event pairs, 0 based on Foata normal form. 0/323 useless extension candidates. Maximal degree in co-relation 336. Up to 12 conditions per place. [2023-09-01 10:56:13,112 INFO L82 GeneralOperation]: Start removeDead. Operand has 206 places, 229 transitions, 503 flow [2023-09-01 10:56:13,115 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 206 places, 229 transitions, 503 flow [2023-09-01 10:56:13,115 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:56:13,115 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 206 places, 229 transitions, 503 flow [2023-09-01 10:56:13,116 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 206 places, 229 transitions, 503 flow [2023-09-01 10:56:13,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 229 transitions, 503 flow [2023-09-01 10:56:13,166 INFO L130 PetriNetUnfolder]: 54/389 cut-off events. [2023-09-01 10:56:13,167 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-09-01 10:56:13,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 420 conditions, 389 events. 54/389 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1207 event pairs, 0 based on Foata normal form. 0/323 useless extension candidates. Maximal degree in co-relation 336. Up to 12 conditions per place. [2023-09-01 10:56:13,179 INFO L119 LiptonReduction]: Number of co-enabled transitions 32000 [2023-09-01 10:56:15,788 INFO L134 LiptonReduction]: Checked pairs total: 72192 [2023-09-01 10:56:15,789 INFO L136 LiptonReduction]: Total number of compositions: 160 [2023-09-01 10:56:15,790 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:56:15,791 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:56:15,791 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:56:15,802 INFO L130 PetriNetUnfolder]: 34/133 cut-off events. [2023-09-01 10:56:15,802 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-09-01 10:56:15,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:56:15,802 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:56:15,803 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:56:15,803 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:56:15,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1273944007, now seen corresponding path program 1 times [2023-09-01 10:56:15,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:56:15,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135641108] [2023-09-01 10:56:15,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:56:15,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:56:15,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:15,839 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:56:15,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:15,874 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:56:15,875 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:56:15,875 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:56:15,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 10:56:15,875 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:56:15,876 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:56:15,876 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:56:15,876 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 10:56:15,895 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 10:56:15,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 235 places, 262 transitions, 584 flow [2023-09-01 10:56:15,949 INFO L130 PetriNetUnfolder]: 64/455 cut-off events. [2023-09-01 10:56:15,950 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-09-01 10:56:15,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 455 events. 64/455 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1445 event pairs, 0 based on Foata normal form. 0/377 useless extension candidates. Maximal degree in co-relation 408. Up to 14 conditions per place. [2023-09-01 10:56:15,957 INFO L82 GeneralOperation]: Start removeDead. Operand has 235 places, 262 transitions, 584 flow [2023-09-01 10:56:15,962 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 235 places, 262 transitions, 584 flow [2023-09-01 10:56:15,962 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:56:15,962 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 235 places, 262 transitions, 584 flow [2023-09-01 10:56:15,963 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 235 places, 262 transitions, 584 flow [2023-09-01 10:56:15,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 235 places, 262 transitions, 584 flow [2023-09-01 10:56:16,027 INFO L130 PetriNetUnfolder]: 64/455 cut-off events. [2023-09-01 10:56:16,027 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-09-01 10:56:16,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 455 events. 64/455 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1445 event pairs, 0 based on Foata normal form. 0/377 useless extension candidates. Maximal degree in co-relation 408. Up to 14 conditions per place. [2023-09-01 10:56:16,045 INFO L119 LiptonReduction]: Number of co-enabled transitions 44736 [2023-09-01 10:56:18,841 INFO L134 LiptonReduction]: Checked pairs total: 103772 [2023-09-01 10:56:18,841 INFO L136 LiptonReduction]: Total number of compositions: 178 [2023-09-01 10:56:18,843 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:56:18,843 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:56:18,844 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:56:18,863 INFO L130 PetriNetUnfolder]: 42/161 cut-off events. [2023-09-01 10:56:18,863 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-09-01 10:56:18,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:56:18,863 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:56:18,863 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:56:18,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:56:18,864 INFO L85 PathProgramCache]: Analyzing trace with hash 227886290, now seen corresponding path program 1 times [2023-09-01 10:56:18,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:56:18,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919069654] [2023-09-01 10:56:18,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:56:18,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:56:18,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:18,898 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:56:18,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:18,920 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:56:18,920 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:56:18,921 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:56:18,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 10:56:18,921 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:56:18,922 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:56:18,922 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:56:18,922 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 10:56:18,945 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 10:56:18,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 264 places, 295 transitions, 667 flow [2023-09-01 10:56:19,015 INFO L130 PetriNetUnfolder]: 74/521 cut-off events. [2023-09-01 10:56:19,016 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-09-01 10:56:19,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 571 conditions, 521 events. 74/521 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1685 event pairs, 0 based on Foata normal form. 0/431 useless extension candidates. Maximal degree in co-relation 481. Up to 16 conditions per place. [2023-09-01 10:56:19,025 INFO L82 GeneralOperation]: Start removeDead. Operand has 264 places, 295 transitions, 667 flow [2023-09-01 10:56:19,031 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 264 places, 295 transitions, 667 flow [2023-09-01 10:56:19,031 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:56:19,031 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 264 places, 295 transitions, 667 flow [2023-09-01 10:56:19,031 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 264 places, 295 transitions, 667 flow [2023-09-01 10:56:19,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 264 places, 295 transitions, 667 flow [2023-09-01 10:56:19,095 INFO L130 PetriNetUnfolder]: 74/521 cut-off events. [2023-09-01 10:56:19,096 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-09-01 10:56:19,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 571 conditions, 521 events. 74/521 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1685 event pairs, 0 based on Foata normal form. 0/431 useless extension candidates. Maximal degree in co-relation 481. Up to 16 conditions per place. [2023-09-01 10:56:19,126 INFO L119 LiptonReduction]: Number of co-enabled transitions 59584 [2023-09-01 10:56:21,948 INFO L134 LiptonReduction]: Checked pairs total: 136790 [2023-09-01 10:56:21,948 INFO L136 LiptonReduction]: Total number of compositions: 199 [2023-09-01 10:56:21,950 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:56:21,950 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:56:21,951 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:56:21,966 INFO L130 PetriNetUnfolder]: 50/189 cut-off events. [2023-09-01 10:56:21,967 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-09-01 10:56:21,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:56:21,967 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:56:21,967 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:56:21,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:56:21,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1616660537, now seen corresponding path program 1 times [2023-09-01 10:56:21,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:56:21,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858394611] [2023-09-01 10:56:21,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:56:21,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:56:21,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:21,988 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:56:21,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:22,007 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:56:22,007 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:56:22,007 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:56:22,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 10:56:22,008 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:56:22,008 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:56:22,008 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:56:22,008 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 10:56:22,031 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 10:56:22,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 293 places, 328 transitions, 752 flow [2023-09-01 10:56:22,128 INFO L130 PetriNetUnfolder]: 84/587 cut-off events. [2023-09-01 10:56:22,128 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-09-01 10:56:22,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 648 conditions, 587 events. 84/587 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1914 event pairs, 0 based on Foata normal form. 0/485 useless extension candidates. Maximal degree in co-relation 555. Up to 18 conditions per place. [2023-09-01 10:56:22,141 INFO L82 GeneralOperation]: Start removeDead. Operand has 293 places, 328 transitions, 752 flow [2023-09-01 10:56:22,147 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 293 places, 328 transitions, 752 flow [2023-09-01 10:56:22,147 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:56:22,147 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 293 places, 328 transitions, 752 flow [2023-09-01 10:56:22,148 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 293 places, 328 transitions, 752 flow [2023-09-01 10:56:22,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 293 places, 328 transitions, 752 flow [2023-09-01 10:56:22,230 INFO L130 PetriNetUnfolder]: 84/587 cut-off events. [2023-09-01 10:56:22,231 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-09-01 10:56:22,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 648 conditions, 587 events. 84/587 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1914 event pairs, 0 based on Foata normal form. 0/485 useless extension candidates. Maximal degree in co-relation 555. Up to 18 conditions per place. [2023-09-01 10:56:22,269 INFO L119 LiptonReduction]: Number of co-enabled transitions 76544 [2023-09-01 10:56:25,348 INFO L134 LiptonReduction]: Checked pairs total: 201020 [2023-09-01 10:56:25,349 INFO L136 LiptonReduction]: Total number of compositions: 220 [2023-09-01 10:56:25,350 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:56:25,351 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:56:25,351 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:56:25,370 INFO L130 PetriNetUnfolder]: 58/217 cut-off events. [2023-09-01 10:56:25,370 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-09-01 10:56:25,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:56:25,371 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:56:25,371 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:56:25,371 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:56:25,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1843327387, now seen corresponding path program 1 times [2023-09-01 10:56:25,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:56:25,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849174624] [2023-09-01 10:56:25,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:56:25,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:56:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:25,408 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:56:25,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:25,445 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:56:25,445 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:56:25,445 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:56:25,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 10:56:25,445 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:56:25,445 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:56:25,446 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:56:25,446 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 10:56:25,472 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 10:56:25,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 322 places, 361 transitions, 839 flow [2023-09-01 10:56:25,599 INFO L130 PetriNetUnfolder]: 94/653 cut-off events. [2023-09-01 10:56:25,601 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-09-01 10:56:25,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 726 conditions, 653 events. 94/653 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 2154 event pairs, 0 based on Foata normal form. 0/539 useless extension candidates. Maximal degree in co-relation 630. Up to 20 conditions per place. [2023-09-01 10:56:25,614 INFO L82 GeneralOperation]: Start removeDead. Operand has 322 places, 361 transitions, 839 flow [2023-09-01 10:56:25,619 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 322 places, 361 transitions, 839 flow [2023-09-01 10:56:25,620 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:56:25,620 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 322 places, 361 transitions, 839 flow [2023-09-01 10:56:25,620 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 322 places, 361 transitions, 839 flow [2023-09-01 10:56:25,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 322 places, 361 transitions, 839 flow [2023-09-01 10:56:25,724 INFO L130 PetriNetUnfolder]: 94/653 cut-off events. [2023-09-01 10:56:25,724 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-09-01 10:56:25,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 726 conditions, 653 events. 94/653 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 2154 event pairs, 0 based on Foata normal form. 0/539 useless extension candidates. Maximal degree in co-relation 630. Up to 20 conditions per place. [2023-09-01 10:56:25,773 INFO L119 LiptonReduction]: Number of co-enabled transitions 95616 [2023-09-01 10:56:29,133 INFO L134 LiptonReduction]: Checked pairs total: 222403 [2023-09-01 10:56:29,134 INFO L136 LiptonReduction]: Total number of compositions: 237 [2023-09-01 10:56:29,135 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:56:29,135 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:56:29,135 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:56:29,159 INFO L130 PetriNetUnfolder]: 66/245 cut-off events. [2023-09-01 10:56:29,159 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-09-01 10:56:29,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:56:29,159 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:56:29,160 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:56:29,160 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:56:29,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1823852675, now seen corresponding path program 1 times [2023-09-01 10:56:29,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:56:29,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989062685] [2023-09-01 10:56:29,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:56:29,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:56:29,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:29,201 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:56:29,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:29,231 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:56:29,232 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:56:29,232 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:56:29,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 10:56:29,232 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:56:29,235 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:56:29,235 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:56:29,236 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 10:56:29,264 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 10:56:29,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 351 places, 394 transitions, 928 flow [2023-09-01 10:56:29,389 INFO L130 PetriNetUnfolder]: 104/719 cut-off events. [2023-09-01 10:56:29,390 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-09-01 10:56:29,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 805 conditions, 719 events. 104/719 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 2399 event pairs, 0 based on Foata normal form. 0/593 useless extension candidates. Maximal degree in co-relation 706. Up to 22 conditions per place. [2023-09-01 10:56:29,405 INFO L82 GeneralOperation]: Start removeDead. Operand has 351 places, 394 transitions, 928 flow [2023-09-01 10:56:29,440 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 351 places, 394 transitions, 928 flow [2023-09-01 10:56:29,441 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:56:29,441 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 351 places, 394 transitions, 928 flow [2023-09-01 10:56:29,441 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 351 places, 394 transitions, 928 flow [2023-09-01 10:56:29,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 351 places, 394 transitions, 928 flow [2023-09-01 10:56:29,562 INFO L130 PetriNetUnfolder]: 104/719 cut-off events. [2023-09-01 10:56:29,563 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-09-01 10:56:29,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 805 conditions, 719 events. 104/719 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 2399 event pairs, 0 based on Foata normal form. 0/593 useless extension candidates. Maximal degree in co-relation 706. Up to 22 conditions per place. [2023-09-01 10:56:29,623 INFO L119 LiptonReduction]: Number of co-enabled transitions 116800 [2023-09-01 10:56:32,817 INFO L134 LiptonReduction]: Checked pairs total: 279987 [2023-09-01 10:56:32,817 INFO L136 LiptonReduction]: Total number of compositions: 257 [2023-09-01 10:56:32,819 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:56:32,819 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:56:32,819 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:56:32,847 INFO L130 PetriNetUnfolder]: 74/273 cut-off events. [2023-09-01 10:56:32,848 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-09-01 10:56:32,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:56:32,848 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:56:32,848 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:56:32,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:56:32,849 INFO L85 PathProgramCache]: Analyzing trace with hash -508880899, now seen corresponding path program 1 times [2023-09-01 10:56:32,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:56:32,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728055] [2023-09-01 10:56:32,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:56:32,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:56:32,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:32,870 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:56:32,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:32,890 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:56:32,890 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:56:32,891 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:56:32,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 10:56:32,891 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:56:32,891 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:56:32,891 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:56:32,892 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 10:56:32,943 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 10:56:32,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 380 places, 427 transitions, 1019 flow [2023-09-01 10:56:33,095 INFO L130 PetriNetUnfolder]: 114/785 cut-off events. [2023-09-01 10:56:33,095 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2023-09-01 10:56:33,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 885 conditions, 785 events. 114/785 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 2620 event pairs, 0 based on Foata normal form. 0/647 useless extension candidates. Maximal degree in co-relation 783. Up to 24 conditions per place. [2023-09-01 10:56:33,119 INFO L82 GeneralOperation]: Start removeDead. Operand has 380 places, 427 transitions, 1019 flow [2023-09-01 10:56:33,128 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 380 places, 427 transitions, 1019 flow [2023-09-01 10:56:33,128 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:56:33,129 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 380 places, 427 transitions, 1019 flow [2023-09-01 10:56:33,129 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 380 places, 427 transitions, 1019 flow [2023-09-01 10:56:33,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 380 places, 427 transitions, 1019 flow [2023-09-01 10:56:33,304 INFO L130 PetriNetUnfolder]: 114/785 cut-off events. [2023-09-01 10:56:33,304 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2023-09-01 10:56:33,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 885 conditions, 785 events. 114/785 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 2620 event pairs, 0 based on Foata normal form. 0/647 useless extension candidates. Maximal degree in co-relation 783. Up to 24 conditions per place. [2023-09-01 10:56:33,367 INFO L119 LiptonReduction]: Number of co-enabled transitions 140096 [2023-09-01 10:56:36,993 INFO L134 LiptonReduction]: Checked pairs total: 362631 [2023-09-01 10:56:36,993 INFO L136 LiptonReduction]: Total number of compositions: 276 [2023-09-01 10:56:36,994 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:56:36,995 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:56:36,995 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:56:37,021 INFO L130 PetriNetUnfolder]: 82/301 cut-off events. [2023-09-01 10:56:37,021 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2023-09-01 10:56:37,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:56:37,021 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:56:37,022 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:56:37,022 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:56:37,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1873799999, now seen corresponding path program 1 times [2023-09-01 10:56:37,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:56:37,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469335608] [2023-09-01 10:56:37,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:56:37,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:56:37,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:37,047 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:56:37,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:37,069 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:56:37,069 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:56:37,070 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:56:37,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 10:56:37,070 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:56:37,071 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:56:37,071 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:56:37,071 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 10:56:37,100 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 10:56:37,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 409 places, 460 transitions, 1112 flow [2023-09-01 10:56:37,266 INFO L130 PetriNetUnfolder]: 124/851 cut-off events. [2023-09-01 10:56:37,266 INFO L131 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2023-09-01 10:56:37,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 966 conditions, 851 events. 124/851 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 2908 event pairs, 0 based on Foata normal form. 0/701 useless extension candidates. Maximal degree in co-relation 861. Up to 26 conditions per place. [2023-09-01 10:56:37,293 INFO L82 GeneralOperation]: Start removeDead. Operand has 409 places, 460 transitions, 1112 flow [2023-09-01 10:56:37,302 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 409 places, 460 transitions, 1112 flow [2023-09-01 10:56:37,303 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:56:37,303 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 409 places, 460 transitions, 1112 flow [2023-09-01 10:56:37,303 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 409 places, 460 transitions, 1112 flow [2023-09-01 10:56:37,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 409 places, 460 transitions, 1112 flow [2023-09-01 10:56:37,477 INFO L130 PetriNetUnfolder]: 124/851 cut-off events. [2023-09-01 10:56:37,477 INFO L131 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2023-09-01 10:56:37,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 966 conditions, 851 events. 124/851 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 2908 event pairs, 0 based on Foata normal form. 0/701 useless extension candidates. Maximal degree in co-relation 861. Up to 26 conditions per place. [2023-09-01 10:56:37,541 INFO L119 LiptonReduction]: Number of co-enabled transitions 165504 [2023-09-01 10:56:41,045 INFO L134 LiptonReduction]: Checked pairs total: 400674 [2023-09-01 10:56:41,046 INFO L136 LiptonReduction]: Total number of compositions: 299 [2023-09-01 10:56:41,047 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:56:41,047 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:56:41,047 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:56:41,081 INFO L130 PetriNetUnfolder]: 105/345 cut-off events. [2023-09-01 10:56:41,082 INFO L131 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2023-09-01 10:56:41,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:56:41,082 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 10:56:41,082 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:56:41,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:56:41,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1026172418, now seen corresponding path program 1 times [2023-09-01 10:56:41,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:56:41,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730334614] [2023-09-01 10:56:41,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:56:41,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:56:41,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:41,116 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:56:41,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:41,144 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:56:41,145 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:56:41,145 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:56:41,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 10:56:41,145 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:56:41,148 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:56:41,148 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:56:41,148 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 10:56:41,185 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 10:56:41,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 438 places, 493 transitions, 1207 flow [2023-09-01 10:56:41,407 INFO L130 PetriNetUnfolder]: 134/917 cut-off events. [2023-09-01 10:56:41,407 INFO L131 PetriNetUnfolder]: For 442/442 co-relation queries the response was YES. [2023-09-01 10:56:41,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1048 conditions, 917 events. 134/917 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 3122 event pairs, 0 based on Foata normal form. 0/755 useless extension candidates. Maximal degree in co-relation 941. Up to 28 conditions per place. [2023-09-01 10:56:41,434 INFO L82 GeneralOperation]: Start removeDead. Operand has 438 places, 493 transitions, 1207 flow [2023-09-01 10:56:41,443 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 438 places, 493 transitions, 1207 flow [2023-09-01 10:56:41,443 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:56:41,443 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 438 places, 493 transitions, 1207 flow [2023-09-01 10:56:41,444 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 438 places, 493 transitions, 1207 flow [2023-09-01 10:56:41,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 438 places, 493 transitions, 1207 flow [2023-09-01 10:56:41,629 INFO L130 PetriNetUnfolder]: 134/917 cut-off events. [2023-09-01 10:56:41,629 INFO L131 PetriNetUnfolder]: For 442/442 co-relation queries the response was YES. [2023-09-01 10:56:41,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1048 conditions, 917 events. 134/917 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 3122 event pairs, 0 based on Foata normal form. 0/755 useless extension candidates. Maximal degree in co-relation 941. Up to 28 conditions per place. [2023-09-01 10:56:41,729 INFO L119 LiptonReduction]: Number of co-enabled transitions 193024 [2023-09-01 10:56:45,444 INFO L134 LiptonReduction]: Checked pairs total: 521226 [2023-09-01 10:56:45,445 INFO L136 LiptonReduction]: Total number of compositions: 315 [2023-09-01 10:56:45,446 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:56:45,446 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:56:45,447 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:56:45,491 INFO L130 PetriNetUnfolder]: 114/374 cut-off events. [2023-09-01 10:56:45,491 INFO L131 PetriNetUnfolder]: For 442/442 co-relation queries the response was YES. [2023-09-01 10:56:45,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:56:45,491 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 10:56:45,491 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:56:45,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:56:45,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1000971517, now seen corresponding path program 1 times [2023-09-01 10:56:45,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:56:45,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601066226] [2023-09-01 10:56:45,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:56:45,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:56:45,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:45,517 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:56:45,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:45,539 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:56:45,540 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:56:45,540 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:56:45,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 10:56:45,540 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:56:45,541 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:56:45,541 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:56:45,541 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-09-01 10:56:45,595 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 10:56:45,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 467 places, 526 transitions, 1304 flow [2023-09-01 10:56:45,832 INFO L130 PetriNetUnfolder]: 144/983 cut-off events. [2023-09-01 10:56:45,832 INFO L131 PetriNetUnfolder]: For 546/546 co-relation queries the response was YES. [2023-09-01 10:56:45,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1131 conditions, 983 events. 144/983 cut-off events. For 546/546 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 3361 event pairs, 0 based on Foata normal form. 0/809 useless extension candidates. Maximal degree in co-relation 1023. Up to 30 conditions per place. [2023-09-01 10:56:45,861 INFO L82 GeneralOperation]: Start removeDead. Operand has 467 places, 526 transitions, 1304 flow [2023-09-01 10:56:45,870 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 467 places, 526 transitions, 1304 flow [2023-09-01 10:56:45,870 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:56:45,870 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 467 places, 526 transitions, 1304 flow [2023-09-01 10:56:45,871 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 467 places, 526 transitions, 1304 flow [2023-09-01 10:56:45,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 467 places, 526 transitions, 1304 flow [2023-09-01 10:56:46,092 INFO L130 PetriNetUnfolder]: 144/983 cut-off events. [2023-09-01 10:56:46,093 INFO L131 PetriNetUnfolder]: For 546/546 co-relation queries the response was YES. [2023-09-01 10:56:46,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1131 conditions, 983 events. 144/983 cut-off events. For 546/546 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 3361 event pairs, 0 based on Foata normal form. 0/809 useless extension candidates. Maximal degree in co-relation 1023. Up to 30 conditions per place. [2023-09-01 10:56:46,222 INFO L119 LiptonReduction]: Number of co-enabled transitions 222656 [2023-09-01 10:56:50,054 INFO L134 LiptonReduction]: Checked pairs total: 608000 [2023-09-01 10:56:50,054 INFO L136 LiptonReduction]: Total number of compositions: 335 [2023-09-01 10:56:50,055 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:56:50,055 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:56:50,055 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:56:50,097 INFO L130 PetriNetUnfolder]: 123/403 cut-off events. [2023-09-01 10:56:50,097 INFO L131 PetriNetUnfolder]: For 546/546 co-relation queries the response was YES. [2023-09-01 10:56:50,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:56:50,098 INFO L208 CegarLoopForPetriNet]: trace histogram [15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:56:50,098 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:56:50,098 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:56:50,098 INFO L85 PathProgramCache]: Analyzing trace with hash 98813426, now seen corresponding path program 1 times [2023-09-01 10:56:50,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:56:50,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114526809] [2023-09-01 10:56:50,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:56:50,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:56:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:50,126 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:56:50,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:50,152 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:56:50,153 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:56:50,153 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:56:50,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-09-01 10:56:50,153 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:56:50,154 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:56:50,154 WARN L233 ceAbstractionStarter]: 14 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:56:50,154 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 15 thread instances. [2023-09-01 10:56:50,205 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 10:56:50,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 496 places, 559 transitions, 1403 flow [2023-09-01 10:56:50,397 INFO L130 PetriNetUnfolder]: 154/1049 cut-off events. [2023-09-01 10:56:50,397 INFO L131 PetriNetUnfolder]: For 665/665 co-relation queries the response was YES. [2023-09-01 10:56:50,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1215 conditions, 1049 events. 154/1049 cut-off events. For 665/665 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 3635 event pairs, 0 based on Foata normal form. 0/863 useless extension candidates. Maximal degree in co-relation 1106. Up to 32 conditions per place. [2023-09-01 10:56:50,429 INFO L82 GeneralOperation]: Start removeDead. Operand has 496 places, 559 transitions, 1403 flow [2023-09-01 10:56:50,439 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 496 places, 559 transitions, 1403 flow [2023-09-01 10:56:50,440 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:56:50,440 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 496 places, 559 transitions, 1403 flow [2023-09-01 10:56:50,440 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 496 places, 559 transitions, 1403 flow [2023-09-01 10:56:50,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 496 places, 559 transitions, 1403 flow [2023-09-01 10:56:50,656 INFO L130 PetriNetUnfolder]: 154/1049 cut-off events. [2023-09-01 10:56:50,656 INFO L131 PetriNetUnfolder]: For 665/665 co-relation queries the response was YES. [2023-09-01 10:56:50,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1215 conditions, 1049 events. 154/1049 cut-off events. For 665/665 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 3635 event pairs, 0 based on Foata normal form. 0/863 useless extension candidates. Maximal degree in co-relation 1106. Up to 32 conditions per place. [2023-09-01 10:56:50,721 INFO L119 LiptonReduction]: Number of co-enabled transitions 254400 [2023-09-01 10:56:54,798 INFO L134 LiptonReduction]: Checked pairs total: 625378 [2023-09-01 10:56:54,798 INFO L136 LiptonReduction]: Total number of compositions: 357 [2023-09-01 10:56:54,799 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:56:54,800 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:56:54,800 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:56:54,843 INFO L130 PetriNetUnfolder]: 132/432 cut-off events. [2023-09-01 10:56:54,843 INFO L131 PetriNetUnfolder]: For 665/665 co-relation queries the response was YES. [2023-09-01 10:56:54,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:56:54,843 INFO L208 CegarLoopForPetriNet]: trace histogram [16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:56:54,844 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:56:54,844 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:56:54,844 INFO L85 PathProgramCache]: Analyzing trace with hash -2015816416, now seen corresponding path program 1 times [2023-09-01 10:56:54,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:56:54,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103323007] [2023-09-01 10:56:54,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:56:54,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:56:54,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:54,875 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:56:54,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:54,917 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:56:54,918 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:56:54,919 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:56:54,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-09-01 10:56:54,920 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:56:54,920 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:56:54,920 WARN L233 ceAbstractionStarter]: 15 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:56:54,921 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 16 thread instances. [2023-09-01 10:56:54,981 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 10:56:54,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 525 places, 592 transitions, 1504 flow [2023-09-01 10:56:55,224 INFO L130 PetriNetUnfolder]: 164/1115 cut-off events. [2023-09-01 10:56:55,224 INFO L131 PetriNetUnfolder]: For 800/800 co-relation queries the response was YES. [2023-09-01 10:56:55,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1300 conditions, 1115 events. 164/1115 cut-off events. For 800/800 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 3845 event pairs, 0 based on Foata normal form. 0/917 useless extension candidates. Maximal degree in co-relation 1190. Up to 34 conditions per place. [2023-09-01 10:56:55,264 INFO L82 GeneralOperation]: Start removeDead. Operand has 525 places, 592 transitions, 1504 flow [2023-09-01 10:56:55,276 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 525 places, 592 transitions, 1504 flow [2023-09-01 10:56:55,277 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:56:55,277 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 525 places, 592 transitions, 1504 flow [2023-09-01 10:56:55,277 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 525 places, 592 transitions, 1504 flow [2023-09-01 10:56:55,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 525 places, 592 transitions, 1504 flow [2023-09-01 10:56:55,499 INFO L130 PetriNetUnfolder]: 164/1115 cut-off events. [2023-09-01 10:56:55,499 INFO L131 PetriNetUnfolder]: For 800/800 co-relation queries the response was YES. [2023-09-01 10:56:55,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1300 conditions, 1115 events. 164/1115 cut-off events. For 800/800 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 3845 event pairs, 0 based on Foata normal form. 0/917 useless extension candidates. Maximal degree in co-relation 1190. Up to 34 conditions per place. [2023-09-01 10:56:55,653 INFO L119 LiptonReduction]: Number of co-enabled transitions 288256 [2023-09-01 10:56:59,921 INFO L134 LiptonReduction]: Checked pairs total: 707679 [2023-09-01 10:56:59,922 INFO L136 LiptonReduction]: Total number of compositions: 381 [2023-09-01 10:56:59,924 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:56:59,925 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:56:59,925 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:56:59,971 INFO L130 PetriNetUnfolder]: 141/461 cut-off events. [2023-09-01 10:56:59,971 INFO L131 PetriNetUnfolder]: For 800/800 co-relation queries the response was YES. [2023-09-01 10:56:59,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:56:59,971 INFO L208 CegarLoopForPetriNet]: trace histogram [17, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:56:59,972 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:56:59,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:56:59,972 INFO L85 PathProgramCache]: Analyzing trace with hash 357187625, now seen corresponding path program 1 times [2023-09-01 10:56:59,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:56:59,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643533209] [2023-09-01 10:56:59,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:56:59,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:57:00,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:57:00,000 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:57:00,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:57:00,032 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:57:00,033 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:57:00,033 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:57:00,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-09-01 10:57:00,033 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:57:00,034 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:57:00,034 WARN L233 ceAbstractionStarter]: 16 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:57:00,034 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 17 thread instances. [2023-09-01 10:57:00,075 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 10:57:00,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 554 places, 625 transitions, 1607 flow [2023-09-01 10:57:00,433 INFO L130 PetriNetUnfolder]: 174/1181 cut-off events. [2023-09-01 10:57:00,434 INFO L131 PetriNetUnfolder]: For 952/952 co-relation queries the response was YES. [2023-09-01 10:57:00,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1386 conditions, 1181 events. 174/1181 cut-off events. For 952/952 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 4065 event pairs, 0 based on Foata normal form. 0/971 useless extension candidates. Maximal degree in co-relation 1275. Up to 36 conditions per place. [2023-09-01 10:57:00,478 INFO L82 GeneralOperation]: Start removeDead. Operand has 554 places, 625 transitions, 1607 flow [2023-09-01 10:57:00,491 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 554 places, 625 transitions, 1607 flow [2023-09-01 10:57:00,492 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:57:00,492 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 554 places, 625 transitions, 1607 flow [2023-09-01 10:57:00,492 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 554 places, 625 transitions, 1607 flow [2023-09-01 10:57:00,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 554 places, 625 transitions, 1607 flow [2023-09-01 10:57:00,756 INFO L130 PetriNetUnfolder]: 174/1181 cut-off events. [2023-09-01 10:57:00,756 INFO L131 PetriNetUnfolder]: For 952/952 co-relation queries the response was YES. [2023-09-01 10:57:00,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1386 conditions, 1181 events. 174/1181 cut-off events. For 952/952 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 4065 event pairs, 0 based on Foata normal form. 0/971 useless extension candidates. Maximal degree in co-relation 1275. Up to 36 conditions per place. [2023-09-01 10:57:00,897 INFO L119 LiptonReduction]: Number of co-enabled transitions 324224 [2023-09-01 10:57:05,190 INFO L134 LiptonReduction]: Checked pairs total: 797158 [2023-09-01 10:57:05,190 INFO L136 LiptonReduction]: Total number of compositions: 400 [2023-09-01 10:57:05,194 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:57:05,196 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:57:05,196 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:57:05,269 INFO L130 PetriNetUnfolder]: 150/490 cut-off events. [2023-09-01 10:57:05,270 INFO L131 PetriNetUnfolder]: For 952/952 co-relation queries the response was YES. [2023-09-01 10:57:05,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:57:05,270 INFO L208 CegarLoopForPetriNet]: trace histogram [18, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:57:05,270 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:57:05,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:57:05,271 INFO L85 PathProgramCache]: Analyzing trace with hash -861866982, now seen corresponding path program 1 times [2023-09-01 10:57:05,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:57:05,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326297128] [2023-09-01 10:57:05,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:57:05,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:57:05,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:57:05,302 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:57:05,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:57:05,348 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:57:05,349 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:57:05,349 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:57:05,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-09-01 10:57:05,349 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:57:05,350 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:57:05,350 WARN L233 ceAbstractionStarter]: 17 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:57:05,350 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 18 thread instances. [2023-09-01 10:57:05,393 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 10:57:05,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 583 places, 658 transitions, 1712 flow [2023-09-01 10:57:05,822 INFO L130 PetriNetUnfolder]: 184/1247 cut-off events. [2023-09-01 10:57:05,823 INFO L131 PetriNetUnfolder]: For 1122/1122 co-relation queries the response was YES. [2023-09-01 10:57:05,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1473 conditions, 1247 events. 184/1247 cut-off events. For 1122/1122 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 4347 event pairs, 0 based on Foata normal form. 0/1025 useless extension candidates. Maximal degree in co-relation 1361. Up to 38 conditions per place. [2023-09-01 10:57:05,860 INFO L82 GeneralOperation]: Start removeDead. Operand has 583 places, 658 transitions, 1712 flow [2023-09-01 10:57:05,869 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 583 places, 658 transitions, 1712 flow [2023-09-01 10:57:05,869 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:57:05,869 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 583 places, 658 transitions, 1712 flow [2023-09-01 10:57:05,870 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 583 places, 658 transitions, 1712 flow [2023-09-01 10:57:05,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 583 places, 658 transitions, 1712 flow [2023-09-01 10:57:06,152 INFO L130 PetriNetUnfolder]: 184/1247 cut-off events. [2023-09-01 10:57:06,152 INFO L131 PetriNetUnfolder]: For 1122/1122 co-relation queries the response was YES. [2023-09-01 10:57:06,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1473 conditions, 1247 events. 184/1247 cut-off events. For 1122/1122 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 4347 event pairs, 0 based on Foata normal form. 0/1025 useless extension candidates. Maximal degree in co-relation 1361. Up to 38 conditions per place. [2023-09-01 10:57:06,295 INFO L119 LiptonReduction]: Number of co-enabled transitions 362304 [2023-09-01 10:57:10,874 INFO L134 LiptonReduction]: Checked pairs total: 889076 [2023-09-01 10:57:10,874 INFO L136 LiptonReduction]: Total number of compositions: 418 [2023-09-01 10:57:10,875 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:57:10,876 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:57:10,876 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:57:10,969 INFO L130 PetriNetUnfolder]: 159/519 cut-off events. [2023-09-01 10:57:10,970 INFO L131 PetriNetUnfolder]: For 1122/1122 co-relation queries the response was YES. [2023-09-01 10:57:10,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:57:10,970 INFO L208 CegarLoopForPetriNet]: trace histogram [19, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:57:10,970 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:57:10,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:57:10,971 INFO L85 PathProgramCache]: Analyzing trace with hash 622990005, now seen corresponding path program 1 times [2023-09-01 10:57:10,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:57:10,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814350056] [2023-09-01 10:57:10,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:57:10,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:57:11,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:57:11,012 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:57:11,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:57:11,048 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:57:11,050 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:57:11,050 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:57:11,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-09-01 10:57:11,052 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:57:11,053 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:57:11,053 WARN L233 ceAbstractionStarter]: 18 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:57:11,053 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 19 thread instances. [2023-09-01 10:57:11,097 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 10:57:11,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 612 places, 691 transitions, 1819 flow [2023-09-01 10:57:11,395 INFO L130 PetriNetUnfolder]: 194/1313 cut-off events. [2023-09-01 10:57:11,395 INFO L131 PetriNetUnfolder]: For 1311/1311 co-relation queries the response was YES. [2023-09-01 10:57:11,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1561 conditions, 1313 events. 194/1313 cut-off events. For 1311/1311 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 4565 event pairs, 0 based on Foata normal form. 0/1079 useless extension candidates. Maximal degree in co-relation 1448. Up to 40 conditions per place. [2023-09-01 10:57:11,447 INFO L82 GeneralOperation]: Start removeDead. Operand has 612 places, 691 transitions, 1819 flow [2023-09-01 10:57:11,463 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 612 places, 691 transitions, 1819 flow [2023-09-01 10:57:11,463 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:57:11,463 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 612 places, 691 transitions, 1819 flow [2023-09-01 10:57:11,463 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 612 places, 691 transitions, 1819 flow [2023-09-01 10:57:11,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 612 places, 691 transitions, 1819 flow [2023-09-01 10:57:11,814 INFO L130 PetriNetUnfolder]: 194/1313 cut-off events. [2023-09-01 10:57:11,814 INFO L131 PetriNetUnfolder]: For 1311/1311 co-relation queries the response was YES. [2023-09-01 10:57:11,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1561 conditions, 1313 events. 194/1313 cut-off events. For 1311/1311 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 4565 event pairs, 0 based on Foata normal form. 0/1079 useless extension candidates. Maximal degree in co-relation 1448. Up to 40 conditions per place. [2023-09-01 10:57:11,934 INFO L119 LiptonReduction]: Number of co-enabled transitions 402496 [2023-09-01 10:57:16,590 INFO L134 LiptonReduction]: Checked pairs total: 995483 [2023-09-01 10:57:16,590 INFO L136 LiptonReduction]: Total number of compositions: 434 [2023-09-01 10:57:16,591 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:57:16,592 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:57:16,592 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:57:16,657 INFO L130 PetriNetUnfolder]: 168/548 cut-off events. [2023-09-01 10:57:16,657 INFO L131 PetriNetUnfolder]: For 1311/1311 co-relation queries the response was YES. [2023-09-01 10:57:16,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:57:16,658 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:57:16,658 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:57:16,658 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:57:16,658 INFO L85 PathProgramCache]: Analyzing trace with hash -802159748, now seen corresponding path program 1 times [2023-09-01 10:57:16,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:57:16,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117265545] [2023-09-01 10:57:16,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:57:16,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:57:16,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:57:16,687 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:57:16,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:57:16,721 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:57:16,721 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:57:16,721 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:57:16,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-09-01 10:57:16,722 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:57:16,722 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:57:16,722 WARN L233 ceAbstractionStarter]: 19 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:57:16,722 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 20 thread instances. [2023-09-01 10:57:16,776 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 10:57:16,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 641 places, 724 transitions, 1928 flow [2023-09-01 10:57:17,151 INFO L130 PetriNetUnfolder]: 204/1379 cut-off events. [2023-09-01 10:57:17,152 INFO L131 PetriNetUnfolder]: For 1520/1520 co-relation queries the response was YES. [2023-09-01 10:57:17,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1650 conditions, 1379 events. 204/1379 cut-off events. For 1520/1520 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 4788 event pairs, 0 based on Foata normal form. 0/1133 useless extension candidates. Maximal degree in co-relation 1536. Up to 42 conditions per place. [2023-09-01 10:57:17,191 INFO L82 GeneralOperation]: Start removeDead. Operand has 641 places, 724 transitions, 1928 flow [2023-09-01 10:57:17,204 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 641 places, 724 transitions, 1928 flow [2023-09-01 10:57:17,204 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:57:17,204 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 641 places, 724 transitions, 1928 flow [2023-09-01 10:57:17,205 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 641 places, 724 transitions, 1928 flow [2023-09-01 10:57:17,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 641 places, 724 transitions, 1928 flow [2023-09-01 10:57:17,520 INFO L130 PetriNetUnfolder]: 204/1379 cut-off events. [2023-09-01 10:57:17,521 INFO L131 PetriNetUnfolder]: For 1520/1520 co-relation queries the response was YES. [2023-09-01 10:57:17,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1650 conditions, 1379 events. 204/1379 cut-off events. For 1520/1520 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 4788 event pairs, 0 based on Foata normal form. 0/1133 useless extension candidates. Maximal degree in co-relation 1536. Up to 42 conditions per place. [2023-09-01 10:57:17,705 INFO L119 LiptonReduction]: Number of co-enabled transitions 444800 [2023-09-01 10:57:22,671 INFO L134 LiptonReduction]: Checked pairs total: 1092412 [2023-09-01 10:57:22,671 INFO L136 LiptonReduction]: Total number of compositions: 453 [2023-09-01 10:57:22,672 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:57:22,673 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:57:22,673 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:57:22,773 INFO L130 PetriNetUnfolder]: 154/553 cut-off events. [2023-09-01 10:57:22,774 INFO L131 PetriNetUnfolder]: For 1520/1520 co-relation queries the response was YES. [2023-09-01 10:57:22,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:57:22,774 INFO L208 CegarLoopForPetriNet]: trace histogram [21, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:57:22,774 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:57:22,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:57:22,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1299222711, now seen corresponding path program 1 times [2023-09-01 10:57:22,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:57:22,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230957230] [2023-09-01 10:57:22,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:57:22,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:57:22,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:57:22,802 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:57:22,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:57:22,838 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:57:22,839 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:57:22,839 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:57:22,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-09-01 10:57:22,839 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:57:22,840 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:57:22,840 WARN L233 ceAbstractionStarter]: 20 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:57:22,840 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 21 thread instances. [2023-09-01 10:57:22,889 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 10:57:22,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 670 places, 757 transitions, 2039 flow [2023-09-01 10:57:23,382 INFO L130 PetriNetUnfolder]: 214/1445 cut-off events. [2023-09-01 10:57:23,382 INFO L131 PetriNetUnfolder]: For 1750/1750 co-relation queries the response was YES. [2023-09-01 10:57:23,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1740 conditions, 1445 events. 214/1445 cut-off events. For 1750/1750 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 5009 event pairs, 0 based on Foata normal form. 0/1187 useless extension candidates. Maximal degree in co-relation 1625. Up to 44 conditions per place. [2023-09-01 10:57:23,448 INFO L82 GeneralOperation]: Start removeDead. Operand has 670 places, 757 transitions, 2039 flow [2023-09-01 10:57:23,470 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 670 places, 757 transitions, 2039 flow [2023-09-01 10:57:23,470 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:57:23,470 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 670 places, 757 transitions, 2039 flow [2023-09-01 10:57:23,470 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 670 places, 757 transitions, 2039 flow [2023-09-01 10:57:23,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 670 places, 757 transitions, 2039 flow [2023-09-01 10:57:23,889 INFO L130 PetriNetUnfolder]: 214/1445 cut-off events. [2023-09-01 10:57:23,890 INFO L131 PetriNetUnfolder]: For 1750/1750 co-relation queries the response was YES. [2023-09-01 10:57:23,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1740 conditions, 1445 events. 214/1445 cut-off events. For 1750/1750 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 5009 event pairs, 0 based on Foata normal form. 0/1187 useless extension candidates. Maximal degree in co-relation 1625. Up to 44 conditions per place. [2023-09-01 10:57:24,024 INFO L119 LiptonReduction]: Number of co-enabled transitions 489216 [2023-09-01 10:57:29,319 INFO L134 LiptonReduction]: Checked pairs total: 1213796 [2023-09-01 10:57:29,319 INFO L136 LiptonReduction]: Total number of compositions: 481 [2023-09-01 10:57:29,320 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:57:29,320 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:57:29,320 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:57:29,396 INFO L130 PetriNetUnfolder]: 186/606 cut-off events. [2023-09-01 10:57:29,396 INFO L131 PetriNetUnfolder]: For 1750/1750 co-relation queries the response was YES. [2023-09-01 10:57:29,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:57:29,396 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:57:29,397 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:57:29,397 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:57:29,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1413395635, now seen corresponding path program 1 times [2023-09-01 10:57:29,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:57:29,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501740446] [2023-09-01 10:57:29,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:57:29,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:57:29,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:57:29,438 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:57:29,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:57:29,477 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:57:29,478 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:57:29,478 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:57:29,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-09-01 10:57:29,478 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:57:29,478 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:57:29,479 WARN L233 ceAbstractionStarter]: 21 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:57:29,479 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 22 thread instances. [2023-09-01 10:57:29,532 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 10:57:29,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 699 places, 790 transitions, 2152 flow [2023-09-01 10:57:30,021 INFO L130 PetriNetUnfolder]: 224/1511 cut-off events. [2023-09-01 10:57:30,022 INFO L131 PetriNetUnfolder]: For 2002/2002 co-relation queries the response was YES. [2023-09-01 10:57:30,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1831 conditions, 1511 events. 224/1511 cut-off events. For 2002/2002 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 5284 event pairs, 0 based on Foata normal form. 0/1241 useless extension candidates. Maximal degree in co-relation 1715. Up to 46 conditions per place. [2023-09-01 10:57:30,088 INFO L82 GeneralOperation]: Start removeDead. Operand has 699 places, 790 transitions, 2152 flow [2023-09-01 10:57:30,107 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 699 places, 790 transitions, 2152 flow [2023-09-01 10:57:30,107 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:57:30,107 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 699 places, 790 transitions, 2152 flow [2023-09-01 10:57:30,108 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 699 places, 790 transitions, 2152 flow [2023-09-01 10:57:30,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 699 places, 790 transitions, 2152 flow [2023-09-01 10:57:30,578 INFO L130 PetriNetUnfolder]: 224/1511 cut-off events. [2023-09-01 10:57:30,578 INFO L131 PetriNetUnfolder]: For 2002/2002 co-relation queries the response was YES. [2023-09-01 10:57:30,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1831 conditions, 1511 events. 224/1511 cut-off events. For 2002/2002 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 5284 event pairs, 0 based on Foata normal form. 0/1241 useless extension candidates. Maximal degree in co-relation 1715. Up to 46 conditions per place. [2023-09-01 10:57:30,797 INFO L119 LiptonReduction]: Number of co-enabled transitions 535744 [2023-09-01 10:57:36,422 INFO L134 LiptonReduction]: Checked pairs total: 1326158 [2023-09-01 10:57:36,423 INFO L136 LiptonReduction]: Total number of compositions: 495 [2023-09-01 10:57:36,424 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:57:36,424 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:57:36,424 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:57:36,505 INFO L130 PetriNetUnfolder]: 195/635 cut-off events. [2023-09-01 10:57:36,505 INFO L131 PetriNetUnfolder]: For 2002/2002 co-relation queries the response was YES. [2023-09-01 10:57:36,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:57:36,505 INFO L208 CegarLoopForPetriNet]: trace histogram [23, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:57:36,505 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:57:36,506 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:57:36,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1258466227, now seen corresponding path program 1 times [2023-09-01 10:57:36,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:57:36,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210582241] [2023-09-01 10:57:36,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:57:36,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:57:36,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:57:36,564 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:57:36,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:57:36,600 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:57:36,601 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:57:36,601 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:57:36,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-09-01 10:57:36,601 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:57:36,602 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:57:36,602 WARN L233 ceAbstractionStarter]: 22 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:57:36,602 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 23 thread instances. [2023-09-01 10:57:36,661 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 10:57:36,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 728 places, 823 transitions, 2267 flow [2023-09-01 10:57:37,117 INFO L130 PetriNetUnfolder]: 234/1577 cut-off events. [2023-09-01 10:57:37,118 INFO L131 PetriNetUnfolder]: For 2277/2277 co-relation queries the response was YES. [2023-09-01 10:57:37,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1923 conditions, 1577 events. 234/1577 cut-off events. For 2277/2277 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 5534 event pairs, 0 based on Foata normal form. 0/1295 useless extension candidates. Maximal degree in co-relation 1806. Up to 48 conditions per place. [2023-09-01 10:57:37,199 INFO L82 GeneralOperation]: Start removeDead. Operand has 728 places, 823 transitions, 2267 flow [2023-09-01 10:57:37,225 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 728 places, 823 transitions, 2267 flow [2023-09-01 10:57:37,226 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:57:37,226 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 728 places, 823 transitions, 2267 flow [2023-09-01 10:57:37,226 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 728 places, 823 transitions, 2267 flow [2023-09-01 10:57:37,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 728 places, 823 transitions, 2267 flow [2023-09-01 10:57:37,656 INFO L130 PetriNetUnfolder]: 234/1577 cut-off events. [2023-09-01 10:57:37,657 INFO L131 PetriNetUnfolder]: For 2277/2277 co-relation queries the response was YES. [2023-09-01 10:57:37,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1923 conditions, 1577 events. 234/1577 cut-off events. For 2277/2277 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 5534 event pairs, 0 based on Foata normal form. 0/1295 useless extension candidates. Maximal degree in co-relation 1806. Up to 48 conditions per place. [2023-09-01 10:57:37,984 INFO L119 LiptonReduction]: Number of co-enabled transitions 584384 [2023-09-01 10:57:43,733 INFO L134 LiptonReduction]: Checked pairs total: 1449674 [2023-09-01 10:57:43,733 INFO L136 LiptonReduction]: Total number of compositions: 507 [2023-09-01 10:57:43,734 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:57:43,735 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:57:43,735 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:57:43,834 INFO L130 PetriNetUnfolder]: 178/637 cut-off events. [2023-09-01 10:57:43,834 INFO L131 PetriNetUnfolder]: For 2277/2277 co-relation queries the response was YES. [2023-09-01 10:57:43,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:57:43,834 INFO L208 CegarLoopForPetriNet]: trace histogram [24, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:57:43,834 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:57:43,834 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:57:43,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1560160684, now seen corresponding path program 1 times [2023-09-01 10:57:43,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:57:43,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39249955] [2023-09-01 10:57:43,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:57:43,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:57:43,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:57:43,869 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:57:43,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:57:43,909 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:57:43,909 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:57:43,909 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:57:43,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-09-01 10:57:43,909 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:57:43,910 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:57:43,910 WARN L233 ceAbstractionStarter]: 23 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:57:43,910 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 24 thread instances. [2023-09-01 10:57:43,971 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 10:57:43,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 757 places, 856 transitions, 2384 flow [2023-09-01 10:57:44,445 INFO L130 PetriNetUnfolder]: 244/1643 cut-off events. [2023-09-01 10:57:44,446 INFO L131 PetriNetUnfolder]: For 2576/2576 co-relation queries the response was YES. [2023-09-01 10:57:44,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2016 conditions, 1643 events. 244/1643 cut-off events. For 2576/2576 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 5759 event pairs, 0 based on Foata normal form. 0/1349 useless extension candidates. Maximal degree in co-relation 1898. Up to 50 conditions per place. [2023-09-01 10:57:44,531 INFO L82 GeneralOperation]: Start removeDead. Operand has 757 places, 856 transitions, 2384 flow [2023-09-01 10:57:44,559 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 757 places, 856 transitions, 2384 flow [2023-09-01 10:57:44,559 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:57:44,559 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 757 places, 856 transitions, 2384 flow [2023-09-01 10:57:44,559 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 757 places, 856 transitions, 2384 flow [2023-09-01 10:57:44,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 757 places, 856 transitions, 2384 flow [2023-09-01 10:57:45,024 INFO L130 PetriNetUnfolder]: 244/1643 cut-off events. [2023-09-01 10:57:45,024 INFO L131 PetriNetUnfolder]: For 2576/2576 co-relation queries the response was YES. [2023-09-01 10:57:45,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2016 conditions, 1643 events. 244/1643 cut-off events. For 2576/2576 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 5759 event pairs, 0 based on Foata normal form. 0/1349 useless extension candidates. Maximal degree in co-relation 1898. Up to 50 conditions per place. [2023-09-01 10:57:45,272 INFO L119 LiptonReduction]: Number of co-enabled transitions 635136 [2023-09-01 10:57:51,264 INFO L134 LiptonReduction]: Checked pairs total: 1582867 [2023-09-01 10:57:51,264 INFO L136 LiptonReduction]: Total number of compositions: 528 [2023-09-01 10:57:51,265 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:57:51,265 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:57:51,265 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:57:51,358 INFO L130 PetriNetUnfolder]: 186/665 cut-off events. [2023-09-01 10:57:51,358 INFO L131 PetriNetUnfolder]: For 2576/2576 co-relation queries the response was YES. [2023-09-01 10:57:51,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:57:51,359 INFO L208 CegarLoopForPetriNet]: trace histogram [25, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:57:51,359 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:57:51,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:57:51,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1843058608, now seen corresponding path program 1 times [2023-09-01 10:57:51,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:57:51,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853537254] [2023-09-01 10:57:51,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:57:51,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:57:51,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:57:51,392 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:57:51,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:57:51,429 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:57:51,430 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:57:51,430 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:57:51,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-09-01 10:57:51,430 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:57:51,431 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:57:51,431 WARN L233 ceAbstractionStarter]: 24 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:57:51,431 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 25 thread instances. [2023-09-01 10:57:51,488 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 10:57:51,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 786 places, 889 transitions, 2503 flow [2023-09-01 10:57:52,127 INFO L130 PetriNetUnfolder]: 254/1709 cut-off events. [2023-09-01 10:57:52,127 INFO L131 PetriNetUnfolder]: For 2900/2900 co-relation queries the response was YES. [2023-09-01 10:57:52,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2110 conditions, 1709 events. 254/1709 cut-off events. For 2900/2900 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 5996 event pairs, 0 based on Foata normal form. 0/1403 useless extension candidates. Maximal degree in co-relation 1991. Up to 52 conditions per place. [2023-09-01 10:57:52,193 INFO L82 GeneralOperation]: Start removeDead. Operand has 786 places, 889 transitions, 2503 flow [2023-09-01 10:57:52,212 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 786 places, 889 transitions, 2503 flow [2023-09-01 10:57:52,213 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:57:52,213 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 786 places, 889 transitions, 2503 flow [2023-09-01 10:57:52,213 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 786 places, 889 transitions, 2503 flow [2023-09-01 10:57:52,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 786 places, 889 transitions, 2503 flow [2023-09-01 10:57:52,696 INFO L130 PetriNetUnfolder]: 254/1709 cut-off events. [2023-09-01 10:57:52,697 INFO L131 PetriNetUnfolder]: For 2900/2900 co-relation queries the response was YES. [2023-09-01 10:57:52,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2110 conditions, 1709 events. 254/1709 cut-off events. For 2900/2900 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 5996 event pairs, 0 based on Foata normal form. 0/1403 useless extension candidates. Maximal degree in co-relation 1991. Up to 52 conditions per place. [2023-09-01 10:57:52,995 INFO L119 LiptonReduction]: Number of co-enabled transitions 688000 [2023-09-01 10:57:58,976 INFO L134 LiptonReduction]: Checked pairs total: 1714861 [2023-09-01 10:57:58,976 INFO L136 LiptonReduction]: Total number of compositions: 552 [2023-09-01 10:57:58,977 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:57:58,978 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:57:58,978 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:57:59,113 INFO L130 PetriNetUnfolder]: 222/722 cut-off events. [2023-09-01 10:57:59,113 INFO L131 PetriNetUnfolder]: For 2900/2900 co-relation queries the response was YES. [2023-09-01 10:57:59,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:57:59,114 INFO L208 CegarLoopForPetriNet]: trace histogram [26, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:57:59,114 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:57:59,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:57:59,114 INFO L85 PathProgramCache]: Analyzing trace with hash -2034927601, now seen corresponding path program 1 times [2023-09-01 10:57:59,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:57:59,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915968525] [2023-09-01 10:57:59,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:57:59,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:57:59,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:57:59,149 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:57:59,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:57:59,190 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:57:59,190 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:57:59,190 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:57:59,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-09-01 10:57:59,191 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:57:59,191 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:57:59,191 WARN L233 ceAbstractionStarter]: 25 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:57:59,191 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 26 thread instances. [2023-09-01 10:57:59,249 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 10:57:59,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 815 places, 922 transitions, 2624 flow [2023-09-01 10:57:59,804 INFO L130 PetriNetUnfolder]: 264/1775 cut-off events. [2023-09-01 10:57:59,804 INFO L131 PetriNetUnfolder]: For 3250/3250 co-relation queries the response was YES. [2023-09-01 10:57:59,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2205 conditions, 1775 events. 264/1775 cut-off events. For 3250/3250 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 6222 event pairs, 0 based on Foata normal form. 0/1457 useless extension candidates. Maximal degree in co-relation 2085. Up to 54 conditions per place. [2023-09-01 10:57:59,900 INFO L82 GeneralOperation]: Start removeDead. Operand has 815 places, 922 transitions, 2624 flow [2023-09-01 10:57:59,930 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 815 places, 922 transitions, 2624 flow [2023-09-01 10:57:59,930 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:57:59,930 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 815 places, 922 transitions, 2624 flow [2023-09-01 10:57:59,930 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 815 places, 922 transitions, 2624 flow [2023-09-01 10:57:59,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 815 places, 922 transitions, 2624 flow [2023-09-01 10:58:00,460 INFO L130 PetriNetUnfolder]: 264/1775 cut-off events. [2023-09-01 10:58:00,460 INFO L131 PetriNetUnfolder]: For 3250/3250 co-relation queries the response was YES. [2023-09-01 10:58:00,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2205 conditions, 1775 events. 264/1775 cut-off events. For 3250/3250 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 6222 event pairs, 0 based on Foata normal form. 0/1457 useless extension candidates. Maximal degree in co-relation 2085. Up to 54 conditions per place. [2023-09-01 10:58:00,907 INFO L119 LiptonReduction]: Number of co-enabled transitions 742976 [2023-09-01 10:58:07,185 INFO L134 LiptonReduction]: Checked pairs total: 1848138 [2023-09-01 10:58:07,185 INFO L136 LiptonReduction]: Total number of compositions: 570 [2023-09-01 10:58:07,187 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:58:07,187 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:58:07,187 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:58:07,339 INFO L130 PetriNetUnfolder]: 231/751 cut-off events. [2023-09-01 10:58:07,339 INFO L131 PetriNetUnfolder]: For 3250/3250 co-relation queries the response was YES. [2023-09-01 10:58:07,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:58:07,339 INFO L208 CegarLoopForPetriNet]: trace histogram [27, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:58:07,339 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:58:07,339 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:58:07,340 INFO L85 PathProgramCache]: Analyzing trace with hash 831630080, now seen corresponding path program 1 times [2023-09-01 10:58:07,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:58:07,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108034970] [2023-09-01 10:58:07,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:58:07,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:58:07,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:58:07,382 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:58:07,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:58:07,428 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:58:07,429 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:58:07,429 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:58:07,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-09-01 10:58:07,429 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:58:07,429 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:58:07,430 WARN L233 ceAbstractionStarter]: 26 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:58:07,430 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 27 thread instances. [2023-09-01 10:58:07,501 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 10:58:07,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 844 places, 955 transitions, 2747 flow [2023-09-01 10:58:08,110 INFO L130 PetriNetUnfolder]: 274/1841 cut-off events. [2023-09-01 10:58:08,110 INFO L131 PetriNetUnfolder]: For 3627/3627 co-relation queries the response was YES. [2023-09-01 10:58:08,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2301 conditions, 1841 events. 274/1841 cut-off events. For 3627/3627 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 6438 event pairs, 0 based on Foata normal form. 0/1511 useless extension candidates. Maximal degree in co-relation 2180. Up to 56 conditions per place. [2023-09-01 10:58:08,220 INFO L82 GeneralOperation]: Start removeDead. Operand has 844 places, 955 transitions, 2747 flow [2023-09-01 10:58:08,254 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 844 places, 955 transitions, 2747 flow [2023-09-01 10:58:08,254 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:58:08,254 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 844 places, 955 transitions, 2747 flow [2023-09-01 10:58:08,254 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 844 places, 955 transitions, 2747 flow [2023-09-01 10:58:08,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 844 places, 955 transitions, 2747 flow [2023-09-01 10:58:08,902 INFO L130 PetriNetUnfolder]: 274/1841 cut-off events. [2023-09-01 10:58:08,902 INFO L131 PetriNetUnfolder]: For 3627/3627 co-relation queries the response was YES. [2023-09-01 10:58:08,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2301 conditions, 1841 events. 274/1841 cut-off events. For 3627/3627 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 6438 event pairs, 0 based on Foata normal form. 0/1511 useless extension candidates. Maximal degree in co-relation 2180. Up to 56 conditions per place. [2023-09-01 10:58:09,150 INFO L119 LiptonReduction]: Number of co-enabled transitions 800064 [2023-09-01 10:58:15,712 INFO L134 LiptonReduction]: Checked pairs total: 2005862 [2023-09-01 10:58:15,712 INFO L136 LiptonReduction]: Total number of compositions: 593 [2023-09-01 10:58:15,713 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:58:15,713 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:58:15,713 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:58:15,830 INFO L130 PetriNetUnfolder]: 210/749 cut-off events. [2023-09-01 10:58:15,831 INFO L131 PetriNetUnfolder]: For 3627/3627 co-relation queries the response was YES. [2023-09-01 10:58:15,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:58:15,831 INFO L208 CegarLoopForPetriNet]: trace histogram [28, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:58:15,831 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:58:15,831 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:58:15,831 INFO L85 PathProgramCache]: Analyzing trace with hash -537235835, now seen corresponding path program 1 times [2023-09-01 10:58:15,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:58:15,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28323038] [2023-09-01 10:58:15,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:58:15,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:58:15,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:58:15,871 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:58:15,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:58:15,914 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:58:15,915 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:58:15,915 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:58:15,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-09-01 10:58:15,915 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:58:15,915 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:58:15,916 WARN L233 ceAbstractionStarter]: 27 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:58:15,916 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 28 thread instances. [2023-09-01 10:58:15,977 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 10:58:15,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 873 places, 988 transitions, 2872 flow [2023-09-01 10:58:16,597 INFO L130 PetriNetUnfolder]: 284/1907 cut-off events. [2023-09-01 10:58:16,597 INFO L131 PetriNetUnfolder]: For 4032/4032 co-relation queries the response was YES. [2023-09-01 10:58:16,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2398 conditions, 1907 events. 284/1907 cut-off events. For 4032/4032 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 6631 event pairs, 0 based on Foata normal form. 0/1565 useless extension candidates. Maximal degree in co-relation 2276. Up to 58 conditions per place. [2023-09-01 10:58:16,722 INFO L82 GeneralOperation]: Start removeDead. Operand has 873 places, 988 transitions, 2872 flow [2023-09-01 10:58:16,761 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 873 places, 988 transitions, 2872 flow [2023-09-01 10:58:16,761 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:58:16,761 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 873 places, 988 transitions, 2872 flow [2023-09-01 10:58:16,761 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 873 places, 988 transitions, 2872 flow [2023-09-01 10:58:16,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 873 places, 988 transitions, 2872 flow [2023-09-01 10:58:17,401 INFO L130 PetriNetUnfolder]: 284/1907 cut-off events. [2023-09-01 10:58:17,401 INFO L131 PetriNetUnfolder]: For 4032/4032 co-relation queries the response was YES. [2023-09-01 10:58:17,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2398 conditions, 1907 events. 284/1907 cut-off events. For 4032/4032 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 6631 event pairs, 0 based on Foata normal form. 0/1565 useless extension candidates. Maximal degree in co-relation 2276. Up to 58 conditions per place. [2023-09-01 10:58:17,716 INFO L119 LiptonReduction]: Number of co-enabled transitions 859264 [2023-09-01 10:58:24,430 INFO L134 LiptonReduction]: Checked pairs total: 2138060 [2023-09-01 10:58:24,430 INFO L136 LiptonReduction]: Total number of compositions: 614 [2023-09-01 10:58:24,431 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:58:24,432 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:58:24,432 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:58:24,573 INFO L130 PetriNetUnfolder]: 249/809 cut-off events. [2023-09-01 10:58:24,573 INFO L131 PetriNetUnfolder]: For 4032/4032 co-relation queries the response was YES. [2023-09-01 10:58:24,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:58:24,573 INFO L208 CegarLoopForPetriNet]: trace histogram [29, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:58:24,573 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:58:24,573 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:58:24,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1245020778, now seen corresponding path program 1 times [2023-09-01 10:58:24,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:58:24,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073549449] [2023-09-01 10:58:24,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:58:24,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:58:24,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:58:24,608 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:58:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:58:24,653 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:58:24,653 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:58:24,653 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:58:24,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-09-01 10:58:24,654 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:58:24,654 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:58:24,654 WARN L233 ceAbstractionStarter]: 28 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:58:24,654 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 29 thread instances. [2023-09-01 10:58:24,718 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 10:58:24,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 902 places, 1021 transitions, 2999 flow [2023-09-01 10:58:25,553 INFO L130 PetriNetUnfolder]: 294/1973 cut-off events. [2023-09-01 10:58:25,553 INFO L131 PetriNetUnfolder]: For 4466/4466 co-relation queries the response was YES. [2023-09-01 10:58:25,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2496 conditions, 1973 events. 294/1973 cut-off events. For 4466/4466 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 6895 event pairs, 0 based on Foata normal form. 0/1619 useless extension candidates. Maximal degree in co-relation 2373. Up to 60 conditions per place. [2023-09-01 10:58:25,626 INFO L82 GeneralOperation]: Start removeDead. Operand has 902 places, 1021 transitions, 2999 flow [2023-09-01 10:58:25,646 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 902 places, 1021 transitions, 2999 flow [2023-09-01 10:58:25,646 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:58:25,646 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 902 places, 1021 transitions, 2999 flow [2023-09-01 10:58:25,646 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 902 places, 1021 transitions, 2999 flow [2023-09-01 10:58:25,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 902 places, 1021 transitions, 2999 flow [2023-09-01 10:58:26,306 INFO L130 PetriNetUnfolder]: 294/1973 cut-off events. [2023-09-01 10:58:26,306 INFO L131 PetriNetUnfolder]: For 4466/4466 co-relation queries the response was YES. [2023-09-01 10:58:26,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2496 conditions, 1973 events. 294/1973 cut-off events. For 4466/4466 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 6895 event pairs, 0 based on Foata normal form. 0/1619 useless extension candidates. Maximal degree in co-relation 2373. Up to 60 conditions per place. [2023-09-01 10:58:26,741 INFO L119 LiptonReduction]: Number of co-enabled transitions 920576 [2023-09-01 10:58:33,814 INFO L134 LiptonReduction]: Checked pairs total: 2281887 [2023-09-01 10:58:33,815 INFO L136 LiptonReduction]: Total number of compositions: 631 [2023-09-01 10:58:33,816 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:58:33,816 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:58:33,816 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:58:33,960 INFO L130 PetriNetUnfolder]: 258/838 cut-off events. [2023-09-01 10:58:33,960 INFO L131 PetriNetUnfolder]: For 4466/4466 co-relation queries the response was YES. [2023-09-01 10:58:33,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:58:33,960 INFO L208 CegarLoopForPetriNet]: trace histogram [30, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:58:33,960 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:58:33,961 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:58:33,961 INFO L85 PathProgramCache]: Analyzing trace with hash -95976138, now seen corresponding path program 1 times [2023-09-01 10:58:33,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:58:33,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205576449] [2023-09-01 10:58:33,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:58:33,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:58:34,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:58:34,003 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:58:34,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:58:34,048 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:58:34,048 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:58:34,048 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:58:34,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-09-01 10:58:34,049 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:58:34,049 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:58:34,049 WARN L233 ceAbstractionStarter]: 29 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:58:34,049 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 30 thread instances. [2023-09-01 10:58:34,113 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 10:58:34,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 931 places, 1054 transitions, 3128 flow [2023-09-01 10:58:34,924 INFO L130 PetriNetUnfolder]: 304/2039 cut-off events. [2023-09-01 10:58:34,925 INFO L131 PetriNetUnfolder]: For 4930/4930 co-relation queries the response was YES. [2023-09-01 10:58:35,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2595 conditions, 2039 events. 304/2039 cut-off events. For 4930/4930 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 7098 event pairs, 0 based on Foata normal form. 0/1673 useless extension candidates. Maximal degree in co-relation 2471. Up to 62 conditions per place. [2023-09-01 10:58:35,052 INFO L82 GeneralOperation]: Start removeDead. Operand has 931 places, 1054 transitions, 3128 flow [2023-09-01 10:58:35,090 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 931 places, 1054 transitions, 3128 flow [2023-09-01 10:58:35,090 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:58:35,090 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 931 places, 1054 transitions, 3128 flow [2023-09-01 10:58:35,091 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 931 places, 1054 transitions, 3128 flow [2023-09-01 10:58:35,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 931 places, 1054 transitions, 3128 flow [2023-09-01 10:58:35,789 INFO L130 PetriNetUnfolder]: 304/2039 cut-off events. [2023-09-01 10:58:35,789 INFO L131 PetriNetUnfolder]: For 4930/4930 co-relation queries the response was YES. [2023-09-01 10:58:35,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2595 conditions, 2039 events. 304/2039 cut-off events. For 4930/4930 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 7098 event pairs, 0 based on Foata normal form. 0/1673 useless extension candidates. Maximal degree in co-relation 2471. Up to 62 conditions per place. [2023-09-01 10:58:36,250 INFO L119 LiptonReduction]: Number of co-enabled transitions 984000 [2023-09-01 10:58:43,404 INFO L134 LiptonReduction]: Checked pairs total: 2467023 [2023-09-01 10:58:43,405 INFO L136 LiptonReduction]: Total number of compositions: 653 [2023-09-01 10:58:43,406 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:58:43,406 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:58:43,406 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:58:43,560 INFO L130 PetriNetUnfolder]: 267/867 cut-off events. [2023-09-01 10:58:43,560 INFO L131 PetriNetUnfolder]: For 4930/4930 co-relation queries the response was YES. [2023-09-01 10:58:43,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:58:43,561 INFO L208 CegarLoopForPetriNet]: trace histogram [31, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:58:43,561 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:58:43,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:58:43,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1420629532, now seen corresponding path program 1 times [2023-09-01 10:58:43,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:58:43,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078515748] [2023-09-01 10:58:43,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:58:43,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:58:43,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:58:43,602 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:58:43,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:58:43,649 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:58:43,649 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:58:43,649 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:58:43,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-09-01 10:58:43,650 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:58:43,650 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:58:43,650 WARN L233 ceAbstractionStarter]: 30 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:58:43,650 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 31 thread instances. [2023-09-01 10:58:43,722 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 10:58:43,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 960 places, 1087 transitions, 3259 flow [2023-09-01 10:58:44,550 INFO L130 PetriNetUnfolder]: 314/2105 cut-off events. [2023-09-01 10:58:44,551 INFO L131 PetriNetUnfolder]: For 5425/5425 co-relation queries the response was YES. [2023-09-01 10:58:44,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2695 conditions, 2105 events. 314/2105 cut-off events. For 5425/5425 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 7363 event pairs, 0 based on Foata normal form. 0/1727 useless extension candidates. Maximal degree in co-relation 2570. Up to 64 conditions per place. [2023-09-01 10:58:44,691 INFO L82 GeneralOperation]: Start removeDead. Operand has 960 places, 1087 transitions, 3259 flow [2023-09-01 10:58:44,732 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 960 places, 1087 transitions, 3259 flow [2023-09-01 10:58:44,733 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:58:44,733 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 960 places, 1087 transitions, 3259 flow [2023-09-01 10:58:44,733 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 960 places, 1087 transitions, 3259 flow [2023-09-01 10:58:44,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 960 places, 1087 transitions, 3259 flow [2023-09-01 10:58:45,526 INFO L130 PetriNetUnfolder]: 314/2105 cut-off events. [2023-09-01 10:58:45,526 INFO L131 PetriNetUnfolder]: For 5425/5425 co-relation queries the response was YES. [2023-09-01 10:58:45,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2695 conditions, 2105 events. 314/2105 cut-off events. For 5425/5425 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 7363 event pairs, 0 based on Foata normal form. 0/1727 useless extension candidates. Maximal degree in co-relation 2570. Up to 64 conditions per place. [2023-09-01 10:58:46,018 INFO L119 LiptonReduction]: Number of co-enabled transitions 1049536 [2023-09-01 10:58:53,448 INFO L134 LiptonReduction]: Checked pairs total: 2630374 [2023-09-01 10:58:53,448 INFO L136 LiptonReduction]: Total number of compositions: 672 [2023-09-01 10:58:53,449 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:58:53,450 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:58:53,450 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:58:53,676 INFO L130 PetriNetUnfolder]: 276/896 cut-off events. [2023-09-01 10:58:53,676 INFO L131 PetriNetUnfolder]: For 5425/5425 co-relation queries the response was YES. [2023-09-01 10:58:53,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:58:53,677 INFO L208 CegarLoopForPetriNet]: trace histogram [32, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:58:53,677 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:58:53,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:58:53,677 INFO L85 PathProgramCache]: Analyzing trace with hash 764066699, now seen corresponding path program 1 times [2023-09-01 10:58:53,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:58:53,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064484272] [2023-09-01 10:58:53,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:58:53,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:58:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:58:53,719 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:58:53,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:58:53,768 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:58:53,768 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:58:53,769 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:58:53,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-09-01 10:58:53,769 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:58:53,769 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:58:53,770 WARN L233 ceAbstractionStarter]: 31 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:58:53,770 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 32 thread instances. [2023-09-01 10:58:53,838 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 10:58:53,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 989 places, 1120 transitions, 3392 flow [2023-09-01 10:58:54,697 INFO L130 PetriNetUnfolder]: 324/2171 cut-off events. [2023-09-01 10:58:54,698 INFO L131 PetriNetUnfolder]: For 5952/5952 co-relation queries the response was YES. [2023-09-01 10:58:54,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2796 conditions, 2171 events. 324/2171 cut-off events. For 5952/5952 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 7580 event pairs, 0 based on Foata normal form. 0/1781 useless extension candidates. Maximal degree in co-relation 2670. Up to 66 conditions per place. [2023-09-01 10:58:54,864 INFO L82 GeneralOperation]: Start removeDead. Operand has 989 places, 1120 transitions, 3392 flow [2023-09-01 10:58:54,911 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 989 places, 1120 transitions, 3392 flow [2023-09-01 10:58:54,911 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:58:54,911 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 989 places, 1120 transitions, 3392 flow [2023-09-01 10:58:54,912 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 989 places, 1120 transitions, 3392 flow [2023-09-01 10:58:54,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 989 places, 1120 transitions, 3392 flow [2023-09-01 10:58:55,843 INFO L130 PetriNetUnfolder]: 324/2171 cut-off events. [2023-09-01 10:58:55,843 INFO L131 PetriNetUnfolder]: For 5952/5952 co-relation queries the response was YES. [2023-09-01 10:58:55,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2796 conditions, 2171 events. 324/2171 cut-off events. For 5952/5952 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 7580 event pairs, 0 based on Foata normal form. 0/1781 useless extension candidates. Maximal degree in co-relation 2670. Up to 66 conditions per place. [2023-09-01 10:58:56,194 INFO L119 LiptonReduction]: Number of co-enabled transitions 1117184 [2023-09-01 10:59:03,676 INFO L134 LiptonReduction]: Checked pairs total: 2782376 [2023-09-01 10:59:03,677 INFO L136 LiptonReduction]: Total number of compositions: 692 [2023-09-01 10:59:03,678 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:59:03,678 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:59:03,679 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:59:03,864 INFO L130 PetriNetUnfolder]: 285/925 cut-off events. [2023-09-01 10:59:03,864 INFO L131 PetriNetUnfolder]: For 5952/5952 co-relation queries the response was YES. [2023-09-01 10:59:03,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:59:03,864 INFO L208 CegarLoopForPetriNet]: trace histogram [33, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:59:03,865 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:59:03,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:59:03,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1825218281, now seen corresponding path program 1 times [2023-09-01 10:59:03,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:59:03,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391573647] [2023-09-01 10:59:03,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:59:03,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:59:03,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:59:03,909 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:59:03,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:59:03,963 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:59:03,963 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:59:03,964 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:59:03,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-09-01 10:59:03,964 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:59:03,965 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:59:03,965 WARN L233 ceAbstractionStarter]: 32 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:59:03,965 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 33 thread instances. [2023-09-01 10:59:04,036 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 10:59:04,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1018 places, 1153 transitions, 3527 flow [2023-09-01 10:59:05,013 INFO L130 PetriNetUnfolder]: 334/2237 cut-off events. [2023-09-01 10:59:05,013 INFO L131 PetriNetUnfolder]: For 6512/6512 co-relation queries the response was YES. [2023-09-01 10:59:05,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2898 conditions, 2237 events. 334/2237 cut-off events. For 6512/6512 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 7817 event pairs, 0 based on Foata normal form. 0/1835 useless extension candidates. Maximal degree in co-relation 2771. Up to 68 conditions per place. [2023-09-01 10:59:05,186 INFO L82 GeneralOperation]: Start removeDead. Operand has 1018 places, 1153 transitions, 3527 flow [2023-09-01 10:59:05,257 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1018 places, 1153 transitions, 3527 flow [2023-09-01 10:59:05,258 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:59:05,258 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1018 places, 1153 transitions, 3527 flow [2023-09-01 10:59:05,258 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1018 places, 1153 transitions, 3527 flow [2023-09-01 10:59:05,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1018 places, 1153 transitions, 3527 flow [2023-09-01 10:59:06,172 INFO L130 PetriNetUnfolder]: 334/2237 cut-off events. [2023-09-01 10:59:06,172 INFO L131 PetriNetUnfolder]: For 6512/6512 co-relation queries the response was YES. [2023-09-01 10:59:06,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2898 conditions, 2237 events. 334/2237 cut-off events. For 6512/6512 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 7817 event pairs, 0 based on Foata normal form. 0/1835 useless extension candidates. Maximal degree in co-relation 2771. Up to 68 conditions per place. [2023-09-01 10:59:06,697 INFO L119 LiptonReduction]: Number of co-enabled transitions 1186944 [2023-09-01 10:59:14,628 INFO L134 LiptonReduction]: Checked pairs total: 2949387 [2023-09-01 10:59:14,628 INFO L136 LiptonReduction]: Total number of compositions: 711 [2023-09-01 10:59:14,630 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:59:14,630 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:59:14,630 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:59:14,815 INFO L130 PetriNetUnfolder]: 294/954 cut-off events. [2023-09-01 10:59:14,816 INFO L131 PetriNetUnfolder]: For 6512/6512 co-relation queries the response was YES. [2023-09-01 10:59:14,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:59:14,816 INFO L208 CegarLoopForPetriNet]: trace histogram [34, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:59:14,816 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:59:14,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:59:14,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1599524429, now seen corresponding path program 1 times [2023-09-01 10:59:14,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:59:14,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985818947] [2023-09-01 10:59:14,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:59:14,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:59:14,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:59:14,867 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:59:14,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:59:14,925 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:59:14,926 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:59:14,926 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:59:14,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-09-01 10:59:14,926 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:59:14,927 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:59:14,927 WARN L233 ceAbstractionStarter]: 33 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:59:14,927 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 34 thread instances. [2023-09-01 10:59:15,003 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 10:59:15,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1047 places, 1186 transitions, 3664 flow [2023-09-01 10:59:16,257 INFO L130 PetriNetUnfolder]: 344/2303 cut-off events. [2023-09-01 10:59:16,257 INFO L131 PetriNetUnfolder]: For 7106/7106 co-relation queries the response was YES. [2023-09-01 10:59:16,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3001 conditions, 2303 events. 344/2303 cut-off events. For 7106/7106 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 8067 event pairs, 0 based on Foata normal form. 0/1889 useless extension candidates. Maximal degree in co-relation 2873. Up to 70 conditions per place. [2023-09-01 10:59:16,406 INFO L82 GeneralOperation]: Start removeDead. Operand has 1047 places, 1186 transitions, 3664 flow [2023-09-01 10:59:16,461 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1047 places, 1186 transitions, 3664 flow [2023-09-01 10:59:16,461 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:59:16,461 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1047 places, 1186 transitions, 3664 flow [2023-09-01 10:59:16,461 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1047 places, 1186 transitions, 3664 flow [2023-09-01 10:59:16,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1047 places, 1186 transitions, 3664 flow [2023-09-01 10:59:17,410 INFO L130 PetriNetUnfolder]: 344/2303 cut-off events. [2023-09-01 10:59:17,410 INFO L131 PetriNetUnfolder]: For 7106/7106 co-relation queries the response was YES. [2023-09-01 10:59:17,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3001 conditions, 2303 events. 344/2303 cut-off events. For 7106/7106 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 8067 event pairs, 0 based on Foata normal form. 0/1889 useless extension candidates. Maximal degree in co-relation 2873. Up to 70 conditions per place. [2023-09-01 10:59:18,142 INFO L119 LiptonReduction]: Number of co-enabled transitions 1258816 [2023-09-01 10:59:26,359 INFO L134 LiptonReduction]: Checked pairs total: 3163327 [2023-09-01 10:59:26,359 INFO L136 LiptonReduction]: Total number of compositions: 737 [2023-09-01 10:59:26,361 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:59:26,361 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:59:26,361 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:59:26,553 INFO L130 PetriNetUnfolder]: 266/945 cut-off events. [2023-09-01 10:59:26,553 INFO L131 PetriNetUnfolder]: For 7106/7106 co-relation queries the response was YES. [2023-09-01 10:59:26,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:59:26,554 INFO L208 CegarLoopForPetriNet]: trace histogram [35, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:59:26,554 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:59:26,554 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:59:26,554 INFO L85 PathProgramCache]: Analyzing trace with hash -2105060049, now seen corresponding path program 1 times [2023-09-01 10:59:26,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:59:26,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082882229] [2023-09-01 10:59:26,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:59:26,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:59:26,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:59:26,611 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:59:26,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:59:26,672 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:59:26,673 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:59:26,673 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:59:26,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-09-01 10:59:26,673 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:59:26,674 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:59:26,674 WARN L233 ceAbstractionStarter]: 34 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:59:26,674 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 35 thread instances. [2023-09-01 10:59:26,755 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 10:59:26,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1076 places, 1219 transitions, 3803 flow [2023-09-01 10:59:27,944 INFO L130 PetriNetUnfolder]: 354/2369 cut-off events. [2023-09-01 10:59:27,944 INFO L131 PetriNetUnfolder]: For 7735/7735 co-relation queries the response was YES. [2023-09-01 10:59:28,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3105 conditions, 2369 events. 354/2369 cut-off events. For 7735/7735 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 8299 event pairs, 0 based on Foata normal form. 0/1943 useless extension candidates. Maximal degree in co-relation 2976. Up to 72 conditions per place. [2023-09-01 10:59:28,133 INFO L82 GeneralOperation]: Start removeDead. Operand has 1076 places, 1219 transitions, 3803 flow [2023-09-01 10:59:28,190 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1076 places, 1219 transitions, 3803 flow [2023-09-01 10:59:28,190 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:59:28,191 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1076 places, 1219 transitions, 3803 flow [2023-09-01 10:59:28,191 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1076 places, 1219 transitions, 3803 flow [2023-09-01 10:59:28,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1076 places, 1219 transitions, 3803 flow [2023-09-01 10:59:29,181 INFO L130 PetriNetUnfolder]: 354/2369 cut-off events. [2023-09-01 10:59:29,181 INFO L131 PetriNetUnfolder]: For 7735/7735 co-relation queries the response was YES. [2023-09-01 10:59:29,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3105 conditions, 2369 events. 354/2369 cut-off events. For 7735/7735 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 8299 event pairs, 0 based on Foata normal form. 0/1943 useless extension candidates. Maximal degree in co-relation 2976. Up to 72 conditions per place. [2023-09-01 10:59:29,918 INFO L119 LiptonReduction]: Number of co-enabled transitions 1332800 [2023-09-01 10:59:38,338 INFO L134 LiptonReduction]: Checked pairs total: 3733176 [2023-09-01 10:59:38,338 INFO L136 LiptonReduction]: Total number of compositions: 751 [2023-09-01 10:59:38,339 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:59:38,339 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:59:38,340 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:59:38,539 INFO L130 PetriNetUnfolder]: 274/973 cut-off events. [2023-09-01 10:59:38,539 INFO L131 PetriNetUnfolder]: For 7735/7735 co-relation queries the response was YES. [2023-09-01 10:59:38,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:59:38,539 INFO L208 CegarLoopForPetriNet]: trace histogram [36, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:59:38,539 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:59:38,540 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:59:38,540 INFO L85 PathProgramCache]: Analyzing trace with hash -116720504, now seen corresponding path program 1 times [2023-09-01 10:59:38,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:59:38,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038028785] [2023-09-01 10:59:38,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:59:38,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:59:38,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:59:38,586 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:59:38,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:59:38,649 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:59:38,650 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:59:38,650 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:59:38,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-09-01 10:59:38,650 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:59:38,651 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:59:38,651 WARN L233 ceAbstractionStarter]: 35 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:59:38,651 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 36 thread instances. [2023-09-01 10:59:38,728 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 10:59:38,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1105 places, 1252 transitions, 3944 flow [2023-09-01 10:59:39,869 INFO L130 PetriNetUnfolder]: 364/2435 cut-off events. [2023-09-01 10:59:39,870 INFO L131 PetriNetUnfolder]: For 8400/8400 co-relation queries the response was YES. [2023-09-01 10:59:40,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3210 conditions, 2435 events. 364/2435 cut-off events. For 8400/8400 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 8547 event pairs, 0 based on Foata normal form. 0/1997 useless extension candidates. Maximal degree in co-relation 3080. Up to 74 conditions per place. [2023-09-01 10:59:40,029 INFO L82 GeneralOperation]: Start removeDead. Operand has 1105 places, 1252 transitions, 3944 flow [2023-09-01 10:59:40,095 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1105 places, 1252 transitions, 3944 flow [2023-09-01 10:59:40,095 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:59:40,095 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1105 places, 1252 transitions, 3944 flow [2023-09-01 10:59:40,095 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1105 places, 1252 transitions, 3944 flow [2023-09-01 10:59:40,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1105 places, 1252 transitions, 3944 flow [2023-09-01 10:59:41,187 INFO L130 PetriNetUnfolder]: 364/2435 cut-off events. [2023-09-01 10:59:41,187 INFO L131 PetriNetUnfolder]: For 8400/8400 co-relation queries the response was YES. [2023-09-01 10:59:41,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3210 conditions, 2435 events. 364/2435 cut-off events. For 8400/8400 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 8547 event pairs, 0 based on Foata normal form. 0/1997 useless extension candidates. Maximal degree in co-relation 3080. Up to 74 conditions per place. [2023-09-01 10:59:42,092 INFO L119 LiptonReduction]: Number of co-enabled transitions 1408896 [2023-09-01 10:59:51,183 INFO L134 LiptonReduction]: Checked pairs total: 3548512 [2023-09-01 10:59:51,183 INFO L136 LiptonReduction]: Total number of compositions: 780 [2023-09-01 10:59:51,184 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:59:51,184 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:59:51,184 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:59:51,402 INFO L130 PetriNetUnfolder]: 321/1041 cut-off events. [2023-09-01 10:59:51,402 INFO L131 PetriNetUnfolder]: For 8400/8400 co-relation queries the response was YES. [2023-09-01 10:59:51,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:59:51,402 INFO L208 CegarLoopForPetriNet]: trace histogram [37, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:59:51,402 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:59:51,403 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:59:51,403 INFO L85 PathProgramCache]: Analyzing trace with hash -381247816, now seen corresponding path program 1 times [2023-09-01 10:59:51,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:59:51,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827272846] [2023-09-01 10:59:51,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:59:51,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:59:51,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:59:51,451 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:59:51,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:59:51,514 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:59:51,515 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:59:51,515 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:59:51,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-09-01 10:59:51,515 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:59:51,516 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:59:51,516 WARN L233 ceAbstractionStarter]: 36 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:59:51,516 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 37 thread instances. [2023-09-01 10:59:51,597 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 10:59:51,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1134 places, 1285 transitions, 4087 flow [2023-09-01 10:59:52,919 INFO L130 PetriNetUnfolder]: 374/2501 cut-off events. [2023-09-01 10:59:52,919 INFO L131 PetriNetUnfolder]: For 9102/9102 co-relation queries the response was YES. [2023-09-01 10:59:53,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3316 conditions, 2501 events. 374/2501 cut-off events. For 9102/9102 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 8723 event pairs, 0 based on Foata normal form. 0/2051 useless extension candidates. Maximal degree in co-relation 3185. Up to 76 conditions per place. [2023-09-01 10:59:53,060 INFO L82 GeneralOperation]: Start removeDead. Operand has 1134 places, 1285 transitions, 4087 flow [2023-09-01 10:59:53,118 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1134 places, 1285 transitions, 4087 flow [2023-09-01 10:59:53,119 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:59:53,119 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1134 places, 1285 transitions, 4087 flow [2023-09-01 10:59:53,119 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1134 places, 1285 transitions, 4087 flow [2023-09-01 10:59:53,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1134 places, 1285 transitions, 4087 flow [2023-09-01 10:59:54,360 INFO L130 PetriNetUnfolder]: 374/2501 cut-off events. [2023-09-01 10:59:54,360 INFO L131 PetriNetUnfolder]: For 9102/9102 co-relation queries the response was YES. [2023-09-01 10:59:54,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3316 conditions, 2501 events. 374/2501 cut-off events. For 9102/9102 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 8723 event pairs, 0 based on Foata normal form. 0/2051 useless extension candidates. Maximal degree in co-relation 3185. Up to 76 conditions per place. [2023-09-01 10:59:54,934 INFO L119 LiptonReduction]: Number of co-enabled transitions 1487104 [2023-09-01 11:00:04,260 INFO L134 LiptonReduction]: Checked pairs total: 4165101 [2023-09-01 11:00:04,260 INFO L136 LiptonReduction]: Total number of compositions: 791 [2023-09-01 11:00:04,261 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:00:04,261 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:00:04,262 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:00:04,493 INFO L130 PetriNetUnfolder]: 330/1070 cut-off events. [2023-09-01 11:00:04,493 INFO L131 PetriNetUnfolder]: For 9102/9102 co-relation queries the response was YES. [2023-09-01 11:00:04,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:00:04,493 INFO L208 CegarLoopForPetriNet]: trace histogram [38, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:00:04,494 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:00:04,494 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:00:04,494 INFO L85 PathProgramCache]: Analyzing trace with hash 924732538, now seen corresponding path program 1 times [2023-09-01 11:00:04,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:00:04,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661486613] [2023-09-01 11:00:04,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:00:04,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:00:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:00:04,546 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:00:04,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:00:04,613 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:00:04,614 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:00:04,614 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:00:04,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-09-01 11:00:04,614 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:00:04,615 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:00:04,615 WARN L233 ceAbstractionStarter]: 37 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:00:04,615 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 38 thread instances. [2023-09-01 11:00:04,697 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 11:00:04,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1163 places, 1318 transitions, 4232 flow [2023-09-01 11:00:05,936 INFO L130 PetriNetUnfolder]: 384/2567 cut-off events. [2023-09-01 11:00:05,936 INFO L131 PetriNetUnfolder]: For 9842/9842 co-relation queries the response was YES. [2023-09-01 11:00:06,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3423 conditions, 2567 events. 384/2567 cut-off events. For 9842/9842 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 8989 event pairs, 0 based on Foata normal form. 0/2105 useless extension candidates. Maximal degree in co-relation 3291. Up to 78 conditions per place. [2023-09-01 11:00:06,173 INFO L82 GeneralOperation]: Start removeDead. Operand has 1163 places, 1318 transitions, 4232 flow [2023-09-01 11:00:06,247 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1163 places, 1318 transitions, 4232 flow [2023-09-01 11:00:06,247 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:00:06,247 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1163 places, 1318 transitions, 4232 flow [2023-09-01 11:00:06,247 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1163 places, 1318 transitions, 4232 flow [2023-09-01 11:00:06,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1163 places, 1318 transitions, 4232 flow [2023-09-01 11:00:07,452 INFO L130 PetriNetUnfolder]: 384/2567 cut-off events. [2023-09-01 11:00:07,452 INFO L131 PetriNetUnfolder]: For 9842/9842 co-relation queries the response was YES. [2023-09-01 11:00:07,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3423 conditions, 2567 events. 384/2567 cut-off events. For 9842/9842 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 8989 event pairs, 0 based on Foata normal form. 0/2105 useless extension candidates. Maximal degree in co-relation 3291. Up to 78 conditions per place. [2023-09-01 11:00:08,151 INFO L119 LiptonReduction]: Number of co-enabled transitions 1567424 [2023-09-01 11:00:17,674 INFO L134 LiptonReduction]: Checked pairs total: 3945281 [2023-09-01 11:00:17,674 INFO L136 LiptonReduction]: Total number of compositions: 809 [2023-09-01 11:00:17,676 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:00:17,676 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:00:17,676 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:00:17,925 INFO L130 PetriNetUnfolder]: 339/1099 cut-off events. [2023-09-01 11:00:17,925 INFO L131 PetriNetUnfolder]: For 9842/9842 co-relation queries the response was YES. [2023-09-01 11:00:17,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:00:17,925 INFO L208 CegarLoopForPetriNet]: trace histogram [39, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:00:17,925 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:00:17,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:00:17,926 INFO L85 PathProgramCache]: Analyzing trace with hash -56838460, now seen corresponding path program 1 times [2023-09-01 11:00:17,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:00:17,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869665184] [2023-09-01 11:00:17,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:00:17,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:00:17,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:00:17,979 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:00:18,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:00:18,048 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:00:18,049 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:00:18,049 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:00:18,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-09-01 11:00:18,049 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:00:18,050 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:00:18,050 WARN L233 ceAbstractionStarter]: 38 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:00:18,050 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 39 thread instances. [2023-09-01 11:00:18,136 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 11:00:18,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1192 places, 1351 transitions, 4379 flow [2023-09-01 11:00:19,618 INFO L130 PetriNetUnfolder]: 394/2633 cut-off events. [2023-09-01 11:00:19,619 INFO L131 PetriNetUnfolder]: For 10621/10621 co-relation queries the response was YES. [2023-09-01 11:00:19,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3531 conditions, 2633 events. 394/2633 cut-off events. For 10621/10621 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 9232 event pairs, 0 based on Foata normal form. 0/2159 useless extension candidates. Maximal degree in co-relation 3398. Up to 80 conditions per place. [2023-09-01 11:00:19,760 INFO L82 GeneralOperation]: Start removeDead. Operand has 1192 places, 1351 transitions, 4379 flow [2023-09-01 11:00:19,797 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1192 places, 1351 transitions, 4379 flow [2023-09-01 11:00:19,797 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:00:19,797 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1192 places, 1351 transitions, 4379 flow [2023-09-01 11:00:19,797 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1192 places, 1351 transitions, 4379 flow [2023-09-01 11:00:19,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1192 places, 1351 transitions, 4379 flow [2023-09-01 11:00:21,295 INFO L130 PetriNetUnfolder]: 394/2633 cut-off events. [2023-09-01 11:00:21,295 INFO L131 PetriNetUnfolder]: For 10621/10621 co-relation queries the response was YES. [2023-09-01 11:00:21,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3531 conditions, 2633 events. 394/2633 cut-off events. For 10621/10621 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 9232 event pairs, 0 based on Foata normal form. 0/2159 useless extension candidates. Maximal degree in co-relation 3398. Up to 80 conditions per place. [2023-09-01 11:00:22,024 INFO L119 LiptonReduction]: Number of co-enabled transitions 1649856 [2023-09-01 11:00:31,812 INFO L134 LiptonReduction]: Checked pairs total: 4618377 [2023-09-01 11:00:31,812 INFO L136 LiptonReduction]: Total number of compositions: 836 [2023-09-01 11:00:31,813 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:00:31,814 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:00:31,814 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:00:32,070 INFO L130 PetriNetUnfolder]: 306/1085 cut-off events. [2023-09-01 11:00:32,070 INFO L131 PetriNetUnfolder]: For 10621/10621 co-relation queries the response was YES. [2023-09-01 11:00:32,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:00:32,070 INFO L208 CegarLoopForPetriNet]: trace histogram [40, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:00:32,071 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:00:32,071 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:00:32,071 INFO L85 PathProgramCache]: Analyzing trace with hash 696518690, now seen corresponding path program 1 times [2023-09-01 11:00:32,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:00:32,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959753271] [2023-09-01 11:00:32,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:00:32,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:00:32,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:00:32,124 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:00:32,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:00:32,244 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:00:32,245 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:00:32,245 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:00:32,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-09-01 11:00:32,245 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:00:32,246 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:00:32,246 WARN L233 ceAbstractionStarter]: 39 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:00:32,246 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 40 thread instances. [2023-09-01 11:00:32,334 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 11:00:32,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1221 places, 1384 transitions, 4528 flow [2023-09-01 11:00:34,040 INFO L130 PetriNetUnfolder]: 404/2699 cut-off events. [2023-09-01 11:00:34,040 INFO L131 PetriNetUnfolder]: For 11440/11440 co-relation queries the response was YES. [2023-09-01 11:00:34,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3640 conditions, 2699 events. 404/2699 cut-off events. For 11440/11440 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 9506 event pairs, 0 based on Foata normal form. 0/2213 useless extension candidates. Maximal degree in co-relation 3506. Up to 82 conditions per place. [2023-09-01 11:00:34,190 INFO L82 GeneralOperation]: Start removeDead. Operand has 1221 places, 1384 transitions, 4528 flow [2023-09-01 11:00:34,229 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1221 places, 1384 transitions, 4528 flow [2023-09-01 11:00:34,230 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:00:34,230 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1221 places, 1384 transitions, 4528 flow [2023-09-01 11:00:34,230 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1221 places, 1384 transitions, 4528 flow [2023-09-01 11:00:34,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1221 places, 1384 transitions, 4528 flow [2023-09-01 11:00:35,918 INFO L130 PetriNetUnfolder]: 404/2699 cut-off events. [2023-09-01 11:00:35,918 INFO L131 PetriNetUnfolder]: For 11440/11440 co-relation queries the response was YES. [2023-09-01 11:00:36,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3640 conditions, 2699 events. 404/2699 cut-off events. For 11440/11440 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 9506 event pairs, 0 based on Foata normal form. 0/2213 useless extension candidates. Maximal degree in co-relation 3506. Up to 82 conditions per place. [2023-09-01 11:00:36,485 INFO L119 LiptonReduction]: Number of co-enabled transitions 1734400 [2023-09-01 11:00:46,714 INFO L134 LiptonReduction]: Checked pairs total: 4372392 [2023-09-01 11:00:46,714 INFO L136 LiptonReduction]: Total number of compositions: 847 [2023-09-01 11:00:46,716 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:00:46,716 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:00:46,716 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:00:46,996 INFO L130 PetriNetUnfolder]: 357/1157 cut-off events. [2023-09-01 11:00:46,996 INFO L131 PetriNetUnfolder]: For 11440/11440 co-relation queries the response was YES. [2023-09-01 11:00:46,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:00:46,997 INFO L208 CegarLoopForPetriNet]: trace histogram [41, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:00:46,997 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:00:46,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:00:46,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1784633503, now seen corresponding path program 1 times [2023-09-01 11:00:46,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:00:46,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018329536] [2023-09-01 11:00:46,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:00:46,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:00:47,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:00:47,062 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:00:47,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:00:47,174 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:00:47,174 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:00:47,174 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:00:47,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-09-01 11:00:47,175 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:00:47,175 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:00:47,175 WARN L233 ceAbstractionStarter]: 40 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:00:47,175 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 41 thread instances. [2023-09-01 11:00:47,262 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 11:00:47,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1250 places, 1417 transitions, 4679 flow [2023-09-01 11:00:48,884 INFO L130 PetriNetUnfolder]: 414/2765 cut-off events. [2023-09-01 11:00:48,884 INFO L131 PetriNetUnfolder]: For 12300/12300 co-relation queries the response was YES. [2023-09-01 11:00:49,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3750 conditions, 2765 events. 414/2765 cut-off events. For 12300/12300 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 9783 event pairs, 0 based on Foata normal form. 0/2267 useless extension candidates. Maximal degree in co-relation 3615. Up to 84 conditions per place. [2023-09-01 11:00:49,064 INFO L82 GeneralOperation]: Start removeDead. Operand has 1250 places, 1417 transitions, 4679 flow [2023-09-01 11:00:49,218 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1250 places, 1417 transitions, 4679 flow [2023-09-01 11:00:49,218 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:00:49,218 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1250 places, 1417 transitions, 4679 flow [2023-09-01 11:00:49,219 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1250 places, 1417 transitions, 4679 flow [2023-09-01 11:00:49,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1250 places, 1417 transitions, 4679 flow [2023-09-01 11:00:50,831 INFO L130 PetriNetUnfolder]: 414/2765 cut-off events. [2023-09-01 11:00:50,832 INFO L131 PetriNetUnfolder]: For 12300/12300 co-relation queries the response was YES. [2023-09-01 11:00:51,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3750 conditions, 2765 events. 414/2765 cut-off events. For 12300/12300 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 9783 event pairs, 0 based on Foata normal form. 0/2267 useless extension candidates. Maximal degree in co-relation 3615. Up to 84 conditions per place. [2023-09-01 11:00:51,595 INFO L119 LiptonReduction]: Number of co-enabled transitions 1821056 [2023-09-01 11:01:02,112 INFO L134 LiptonReduction]: Checked pairs total: 4580158 [2023-09-01 11:01:02,112 INFO L136 LiptonReduction]: Total number of compositions: 871 [2023-09-01 11:01:02,113 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:01:02,114 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:01:02,114 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:01:02,481 INFO L130 PetriNetUnfolder]: 366/1186 cut-off events. [2023-09-01 11:01:02,481 INFO L131 PetriNetUnfolder]: For 12300/12300 co-relation queries the response was YES. [2023-09-01 11:01:02,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:01:02,481 INFO L208 CegarLoopForPetriNet]: trace histogram [42, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:01:02,481 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:01:02,482 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:01:02,482 INFO L85 PathProgramCache]: Analyzing trace with hash 338989873, now seen corresponding path program 1 times [2023-09-01 11:01:02,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:01:02,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271424726] [2023-09-01 11:01:02,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:01:02,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:01:02,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:01:02,545 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:01:02,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:01:02,625 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:01:02,626 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:01:02,626 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:01:02,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-09-01 11:01:02,626 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:01:02,626 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:01:02,627 WARN L233 ceAbstractionStarter]: 41 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:01:02,627 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 42 thread instances. [2023-09-01 11:01:02,720 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 11:01:02,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1279 places, 1450 transitions, 4832 flow [2023-09-01 11:01:04,396 INFO L130 PetriNetUnfolder]: 424/2831 cut-off events. [2023-09-01 11:01:04,396 INFO L131 PetriNetUnfolder]: For 13202/13202 co-relation queries the response was YES. [2023-09-01 11:01:04,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3861 conditions, 2831 events. 424/2831 cut-off events. For 13202/13202 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 10020 event pairs, 0 based on Foata normal form. 0/2321 useless extension candidates. Maximal degree in co-relation 3725. Up to 86 conditions per place. [2023-09-01 11:01:04,573 INFO L82 GeneralOperation]: Start removeDead. Operand has 1279 places, 1450 transitions, 4832 flow [2023-09-01 11:01:04,620 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1279 places, 1450 transitions, 4832 flow [2023-09-01 11:01:04,620 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:01:04,620 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1279 places, 1450 transitions, 4832 flow [2023-09-01 11:01:04,620 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1279 places, 1450 transitions, 4832 flow [2023-09-01 11:01:04,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1279 places, 1450 transitions, 4832 flow [2023-09-01 11:01:06,371 INFO L130 PetriNetUnfolder]: 424/2831 cut-off events. [2023-09-01 11:01:06,371 INFO L131 PetriNetUnfolder]: For 13202/13202 co-relation queries the response was YES. [2023-09-01 11:01:06,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3861 conditions, 2831 events. 424/2831 cut-off events. For 13202/13202 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 10020 event pairs, 0 based on Foata normal form. 0/2321 useless extension candidates. Maximal degree in co-relation 3725. Up to 86 conditions per place. [2023-09-01 11:01:07,172 INFO L119 LiptonReduction]: Number of co-enabled transitions 1909824 [2023-09-01 11:01:17,774 INFO L134 LiptonReduction]: Checked pairs total: 4806656 [2023-09-01 11:01:17,774 INFO L136 LiptonReduction]: Total number of compositions: 892 [2023-09-01 11:01:17,776 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:01:17,776 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:01:17,776 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:01:18,145 INFO L130 PetriNetUnfolder]: 375/1215 cut-off events. [2023-09-01 11:01:18,146 INFO L131 PetriNetUnfolder]: For 13202/13202 co-relation queries the response was YES. [2023-09-01 11:01:18,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:01:18,146 INFO L208 CegarLoopForPetriNet]: trace histogram [43, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:01:18,146 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:01:18,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:01:18,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1837833959, now seen corresponding path program 1 times [2023-09-01 11:01:18,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:01:18,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098048713] [2023-09-01 11:01:18,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:01:18,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:01:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:01:18,209 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:01:18,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:01:18,289 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:01:18,289 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:01:18,290 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:01:18,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-09-01 11:01:18,290 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:01:18,290 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:01:18,290 WARN L233 ceAbstractionStarter]: 42 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:01:18,291 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 43 thread instances. [2023-09-01 11:01:18,409 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 11:01:18,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1308 places, 1483 transitions, 4987 flow [2023-09-01 11:01:20,121 INFO L130 PetriNetUnfolder]: 434/2897 cut-off events. [2023-09-01 11:01:20,121 INFO L131 PetriNetUnfolder]: For 14147/14147 co-relation queries the response was YES. [2023-09-01 11:01:20,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3973 conditions, 2897 events. 434/2897 cut-off events. For 14147/14147 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 10197 event pairs, 0 based on Foata normal form. 0/2375 useless extension candidates. Maximal degree in co-relation 3836. Up to 88 conditions per place. [2023-09-01 11:01:20,310 INFO L82 GeneralOperation]: Start removeDead. Operand has 1308 places, 1483 transitions, 4987 flow [2023-09-01 11:01:20,360 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1308 places, 1483 transitions, 4987 flow [2023-09-01 11:01:20,360 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:01:20,360 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1308 places, 1483 transitions, 4987 flow [2023-09-01 11:01:20,361 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1308 places, 1483 transitions, 4987 flow [2023-09-01 11:01:20,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1308 places, 1483 transitions, 4987 flow [2023-09-01 11:01:22,235 INFO L130 PetriNetUnfolder]: 434/2897 cut-off events. [2023-09-01 11:01:22,236 INFO L131 PetriNetUnfolder]: For 14147/14147 co-relation queries the response was YES. [2023-09-01 11:01:22,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3973 conditions, 2897 events. 434/2897 cut-off events. For 14147/14147 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 10197 event pairs, 0 based on Foata normal form. 0/2375 useless extension candidates. Maximal degree in co-relation 3836. Up to 88 conditions per place. [2023-09-01 11:01:23,108 INFO L119 LiptonReduction]: Number of co-enabled transitions 2000704 [2023-09-01 11:01:33,729 INFO L134 LiptonReduction]: Checked pairs total: 5029300 [2023-09-01 11:01:33,729 INFO L136 LiptonReduction]: Total number of compositions: 902 [2023-09-01 11:01:33,730 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:01:33,730 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:01:33,730 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:01:34,044 INFO L130 PetriNetUnfolder]: 338/1197 cut-off events. [2023-09-01 11:01:34,044 INFO L131 PetriNetUnfolder]: For 14147/14147 co-relation queries the response was YES. [2023-09-01 11:01:34,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:01:34,044 INFO L208 CegarLoopForPetriNet]: trace histogram [44, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:01:34,044 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:01:34,045 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:01:34,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1192364580, now seen corresponding path program 1 times [2023-09-01 11:01:34,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:01:34,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508104257] [2023-09-01 11:01:34,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:01:34,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:01:34,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:01:34,107 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:01:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:01:34,189 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:01:34,189 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:01:34,189 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:01:34,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-09-01 11:01:34,190 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:01:34,190 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:01:34,190 WARN L233 ceAbstractionStarter]: 43 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:01:34,190 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 44 thread instances. [2023-09-01 11:01:34,284 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 11:01:34,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1337 places, 1516 transitions, 5144 flow [2023-09-01 11:01:36,197 INFO L130 PetriNetUnfolder]: 444/2963 cut-off events. [2023-09-01 11:01:36,197 INFO L131 PetriNetUnfolder]: For 15136/15136 co-relation queries the response was YES. [2023-09-01 11:01:36,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4086 conditions, 2963 events. 444/2963 cut-off events. For 15136/15136 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 10385 event pairs, 0 based on Foata normal form. 0/2429 useless extension candidates. Maximal degree in co-relation 3948. Up to 90 conditions per place. [2023-09-01 11:01:36,372 INFO L82 GeneralOperation]: Start removeDead. Operand has 1337 places, 1516 transitions, 5144 flow [2023-09-01 11:01:36,417 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1337 places, 1516 transitions, 5144 flow [2023-09-01 11:01:36,417 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:01:36,417 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1337 places, 1516 transitions, 5144 flow [2023-09-01 11:01:36,417 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1337 places, 1516 transitions, 5144 flow [2023-09-01 11:01:36,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1337 places, 1516 transitions, 5144 flow [2023-09-01 11:01:38,331 INFO L130 PetriNetUnfolder]: 444/2963 cut-off events. [2023-09-01 11:01:38,332 INFO L131 PetriNetUnfolder]: For 15136/15136 co-relation queries the response was YES. [2023-09-01 11:01:38,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4086 conditions, 2963 events. 444/2963 cut-off events. For 15136/15136 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 10385 event pairs, 0 based on Foata normal form. 0/2429 useless extension candidates. Maximal degree in co-relation 3948. Up to 90 conditions per place. [2023-09-01 11:01:39,217 INFO L119 LiptonReduction]: Number of co-enabled transitions 2093696 [2023-09-01 11:01:50,143 INFO L134 LiptonReduction]: Checked pairs total: 5815260 [2023-09-01 11:01:50,143 INFO L136 LiptonReduction]: Total number of compositions: 925 [2023-09-01 11:01:50,145 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:01:50,145 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:01:50,145 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:01:50,523 INFO L130 PetriNetUnfolder]: 346/1225 cut-off events. [2023-09-01 11:01:50,524 INFO L131 PetriNetUnfolder]: For 15136/15136 co-relation queries the response was YES. [2023-09-01 11:01:50,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:01:50,524 INFO L208 CegarLoopForPetriNet]: trace histogram [45, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:01:50,524 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:01:50,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:01:50,524 INFO L85 PathProgramCache]: Analyzing trace with hash 436701089, now seen corresponding path program 1 times [2023-09-01 11:01:50,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:01:50,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766136170] [2023-09-01 11:01:50,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:01:50,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:01:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:01:50,580 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:01:50,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:01:50,666 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:01:50,666 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:01:50,666 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:01:50,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-09-01 11:01:50,666 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:01:50,667 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:01:50,667 WARN L233 ceAbstractionStarter]: 44 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:01:50,667 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 45 thread instances. [2023-09-01 11:01:50,764 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 11:01:50,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1366 places, 1549 transitions, 5303 flow [2023-09-01 11:01:52,728 INFO L130 PetriNetUnfolder]: 454/3029 cut-off events. [2023-09-01 11:01:52,729 INFO L131 PetriNetUnfolder]: For 16170/16170 co-relation queries the response was YES. [2023-09-01 11:01:52,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4200 conditions, 3029 events. 454/3029 cut-off events. For 16170/16170 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 10656 event pairs, 0 based on Foata normal form. 0/2483 useless extension candidates. Maximal degree in co-relation 4061. Up to 92 conditions per place. [2023-09-01 11:01:52,919 INFO L82 GeneralOperation]: Start removeDead. Operand has 1366 places, 1549 transitions, 5303 flow [2023-09-01 11:01:52,969 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1366 places, 1549 transitions, 5303 flow [2023-09-01 11:01:52,970 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:01:52,970 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1366 places, 1549 transitions, 5303 flow [2023-09-01 11:01:52,970 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1366 places, 1549 transitions, 5303 flow [2023-09-01 11:01:52,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1366 places, 1549 transitions, 5303 flow [2023-09-01 11:01:55,092 INFO L130 PetriNetUnfolder]: 454/3029 cut-off events. [2023-09-01 11:01:55,092 INFO L131 PetriNetUnfolder]: For 16170/16170 co-relation queries the response was YES. [2023-09-01 11:01:55,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4200 conditions, 3029 events. 454/3029 cut-off events. For 16170/16170 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 10656 event pairs, 0 based on Foata normal form. 0/2483 useless extension candidates. Maximal degree in co-relation 4061. Up to 92 conditions per place. [2023-09-01 11:01:55,815 INFO L119 LiptonReduction]: Number of co-enabled transitions 2188800 [2023-09-01 11:02:07,473 INFO L134 LiptonReduction]: Checked pairs total: 5526824 [2023-09-01 11:02:07,473 INFO L136 LiptonReduction]: Total number of compositions: 948 [2023-09-01 11:02:07,475 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:02:07,475 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:02:07,475 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:02:07,887 INFO L130 PetriNetUnfolder]: 402/1302 cut-off events. [2023-09-01 11:02:07,887 INFO L131 PetriNetUnfolder]: For 16170/16170 co-relation queries the response was YES. [2023-09-01 11:02:07,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:02:07,887 INFO L208 CegarLoopForPetriNet]: trace histogram [46, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:02:07,888 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:02:07,888 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:02:07,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1063894900, now seen corresponding path program 1 times [2023-09-01 11:02:07,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:02:07,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672338243] [2023-09-01 11:02:07,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:02:07,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:02:08,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:02:08,040 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:02:08,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:02:08,123 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:02:08,123 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:02:08,123 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:02:08,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-09-01 11:02:08,124 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:02:08,124 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:02:08,124 WARN L233 ceAbstractionStarter]: 45 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:02:08,124 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 46 thread instances. [2023-09-01 11:02:08,227 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 11:02:08,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1395 places, 1582 transitions, 5464 flow [2023-09-01 11:02:10,203 INFO L130 PetriNetUnfolder]: 464/3095 cut-off events. [2023-09-01 11:02:10,203 INFO L131 PetriNetUnfolder]: For 17250/17250 co-relation queries the response was YES. [2023-09-01 11:02:10,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4315 conditions, 3095 events. 464/3095 cut-off events. For 17250/17250 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 10853 event pairs, 0 based on Foata normal form. 0/2537 useless extension candidates. Maximal degree in co-relation 4175. Up to 94 conditions per place. [2023-09-01 11:02:10,437 INFO L82 GeneralOperation]: Start removeDead. Operand has 1395 places, 1582 transitions, 5464 flow [2023-09-01 11:02:10,498 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1395 places, 1582 transitions, 5464 flow [2023-09-01 11:02:10,498 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:02:10,498 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1395 places, 1582 transitions, 5464 flow [2023-09-01 11:02:10,498 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1395 places, 1582 transitions, 5464 flow [2023-09-01 11:02:10,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1395 places, 1582 transitions, 5464 flow [2023-09-01 11:02:12,632 INFO L130 PetriNetUnfolder]: 464/3095 cut-off events. [2023-09-01 11:02:12,632 INFO L131 PetriNetUnfolder]: For 17250/17250 co-relation queries the response was YES. [2023-09-01 11:02:12,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4315 conditions, 3095 events. 464/3095 cut-off events. For 17250/17250 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 10853 event pairs, 0 based on Foata normal form. 0/2537 useless extension candidates. Maximal degree in co-relation 4175. Up to 94 conditions per place. [2023-09-01 11:02:13,597 INFO L119 LiptonReduction]: Number of co-enabled transitions 2286016 [2023-09-01 11:02:25,135 INFO L134 LiptonReduction]: Checked pairs total: 5765521 [2023-09-01 11:02:25,135 INFO L136 LiptonReduction]: Total number of compositions: 969 [2023-09-01 11:02:25,136 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:02:25,137 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:02:25,137 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:02:25,580 INFO L130 PetriNetUnfolder]: 411/1331 cut-off events. [2023-09-01 11:02:25,580 INFO L131 PetriNetUnfolder]: For 17250/17250 co-relation queries the response was YES. [2023-09-01 11:02:25,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:02:25,580 INFO L208 CegarLoopForPetriNet]: trace histogram [47, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:02:25,580 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:02:25,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:02:25,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1770312530, now seen corresponding path program 1 times [2023-09-01 11:02:25,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:02:25,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871873000] [2023-09-01 11:02:25,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:02:25,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:02:25,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:02:25,648 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:02:25,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:02:25,730 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:02:25,730 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:02:25,730 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:02:25,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-09-01 11:02:25,730 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:02:25,730 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:02:25,730 WARN L233 ceAbstractionStarter]: 46 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:02:25,731 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 47 thread instances. [2023-09-01 11:02:25,820 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 11:02:25,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1424 places, 1615 transitions, 5627 flow [2023-09-01 11:02:27,977 INFO L130 PetriNetUnfolder]: 474/3161 cut-off events. [2023-09-01 11:02:27,977 INFO L131 PetriNetUnfolder]: For 18377/18377 co-relation queries the response was YES. [2023-09-01 11:02:28,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4431 conditions, 3161 events. 474/3161 cut-off events. For 18377/18377 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 11086 event pairs, 0 based on Foata normal form. 0/2591 useless extension candidates. Maximal degree in co-relation 4290. Up to 96 conditions per place. [2023-09-01 11:02:28,193 INFO L82 GeneralOperation]: Start removeDead. Operand has 1424 places, 1615 transitions, 5627 flow [2023-09-01 11:02:28,246 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1424 places, 1615 transitions, 5627 flow [2023-09-01 11:02:28,247 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:02:28,247 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1424 places, 1615 transitions, 5627 flow [2023-09-01 11:02:28,247 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1424 places, 1615 transitions, 5627 flow [2023-09-01 11:02:28,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1424 places, 1615 transitions, 5627 flow [2023-09-01 11:02:30,456 INFO L130 PetriNetUnfolder]: 474/3161 cut-off events. [2023-09-01 11:02:30,457 INFO L131 PetriNetUnfolder]: For 18377/18377 co-relation queries the response was YES. [2023-09-01 11:02:30,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4431 conditions, 3161 events. 474/3161 cut-off events. For 18377/18377 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 11086 event pairs, 0 based on Foata normal form. 0/2591 useless extension candidates. Maximal degree in co-relation 4290. Up to 96 conditions per place. [2023-09-01 11:02:31,299 INFO L119 LiptonReduction]: Number of co-enabled transitions 2385344 [2023-09-01 11:02:43,275 INFO L134 LiptonReduction]: Checked pairs total: 6015043 [2023-09-01 11:02:43,275 INFO L136 LiptonReduction]: Total number of compositions: 987 [2023-09-01 11:02:43,276 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:02:43,276 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:02:43,276 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:02:43,679 INFO L130 PetriNetUnfolder]: 420/1360 cut-off events. [2023-09-01 11:02:43,679 INFO L131 PetriNetUnfolder]: For 18377/18377 co-relation queries the response was YES. [2023-09-01 11:02:43,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:02:43,680 INFO L208 CegarLoopForPetriNet]: trace histogram [48, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:02:43,680 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:02:43,680 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:02:43,680 INFO L85 PathProgramCache]: Analyzing trace with hash 526248823, now seen corresponding path program 1 times [2023-09-01 11:02:43,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:02:43,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104504948] [2023-09-01 11:02:43,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:02:43,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:02:43,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:02:43,766 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:02:43,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:02:43,863 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:02:43,863 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:02:43,863 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:02:43,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-09-01 11:02:43,864 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:02:43,864 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:02:43,864 WARN L233 ceAbstractionStarter]: 47 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:02:43,864 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 48 thread instances. [2023-09-01 11:02:43,974 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 11:02:43,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1453 places, 1648 transitions, 5792 flow [2023-09-01 11:02:46,273 INFO L130 PetriNetUnfolder]: 484/3227 cut-off events. [2023-09-01 11:02:46,273 INFO L131 PetriNetUnfolder]: For 19552/19552 co-relation queries the response was YES. [2023-09-01 11:02:46,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4548 conditions, 3227 events. 484/3227 cut-off events. For 19552/19552 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 11399 event pairs, 0 based on Foata normal form. 0/2645 useless extension candidates. Maximal degree in co-relation 4406. Up to 98 conditions per place. [2023-09-01 11:02:46,514 INFO L82 GeneralOperation]: Start removeDead. Operand has 1453 places, 1648 transitions, 5792 flow [2023-09-01 11:02:46,576 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1453 places, 1648 transitions, 5792 flow [2023-09-01 11:02:46,576 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:02:46,576 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1453 places, 1648 transitions, 5792 flow [2023-09-01 11:02:46,576 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1453 places, 1648 transitions, 5792 flow [2023-09-01 11:02:46,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1453 places, 1648 transitions, 5792 flow [2023-09-01 11:02:48,890 INFO L130 PetriNetUnfolder]: 484/3227 cut-off events. [2023-09-01 11:02:48,890 INFO L131 PetriNetUnfolder]: For 19552/19552 co-relation queries the response was YES. [2023-09-01 11:02:49,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4548 conditions, 3227 events. 484/3227 cut-off events. For 19552/19552 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 11399 event pairs, 0 based on Foata normal form. 0/2645 useless extension candidates. Maximal degree in co-relation 4406. Up to 98 conditions per place. [2023-09-01 11:02:49,973 INFO L119 LiptonReduction]: Number of co-enabled transitions 2486784 [2023-09-01 11:03:01,992 INFO L134 LiptonReduction]: Checked pairs total: 6240525 [2023-09-01 11:03:01,993 INFO L136 LiptonReduction]: Total number of compositions: 1000 [2023-09-01 11:03:01,994 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:03:01,994 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:03:01,994 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:03:02,398 INFO L130 PetriNetUnfolder]: 378/1337 cut-off events. [2023-09-01 11:03:02,398 INFO L131 PetriNetUnfolder]: For 19552/19552 co-relation queries the response was YES. [2023-09-01 11:03:02,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:03:02,399 INFO L208 CegarLoopForPetriNet]: trace histogram [49, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:03:02,399 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:03:02,399 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:03:02,399 INFO L85 PathProgramCache]: Analyzing trace with hash -610573142, now seen corresponding path program 1 times [2023-09-01 11:03:02,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:03:02,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352193047] [2023-09-01 11:03:02,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:03:02,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:03:02,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:03:02,475 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:03:02,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:03:02,622 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:03:02,622 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:03:02,622 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:03:02,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-09-01 11:03:02,623 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:03:02,623 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:03:02,623 WARN L233 ceAbstractionStarter]: 48 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:03:02,623 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 49 thread instances. [2023-09-01 11:03:02,750 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 11:03:02,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1482 places, 1681 transitions, 5959 flow [2023-09-01 11:03:05,071 INFO L130 PetriNetUnfolder]: 494/3293 cut-off events. [2023-09-01 11:03:05,071 INFO L131 PetriNetUnfolder]: For 20776/20776 co-relation queries the response was YES. [2023-09-01 11:03:05,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4666 conditions, 3293 events. 494/3293 cut-off events. For 20776/20776 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 11613 event pairs, 0 based on Foata normal form. 0/2699 useless extension candidates. Maximal degree in co-relation 4523. Up to 100 conditions per place. [2023-09-01 11:03:05,329 INFO L82 GeneralOperation]: Start removeDead. Operand has 1482 places, 1681 transitions, 5959 flow [2023-09-01 11:03:05,397 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1482 places, 1681 transitions, 5959 flow [2023-09-01 11:03:05,397 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:03:05,397 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1482 places, 1681 transitions, 5959 flow [2023-09-01 11:03:05,397 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1482 places, 1681 transitions, 5959 flow [2023-09-01 11:03:05,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1482 places, 1681 transitions, 5959 flow [2023-09-01 11:03:07,858 INFO L130 PetriNetUnfolder]: 494/3293 cut-off events. [2023-09-01 11:03:07,859 INFO L131 PetriNetUnfolder]: For 20776/20776 co-relation queries the response was YES. [2023-09-01 11:03:08,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4666 conditions, 3293 events. 494/3293 cut-off events. For 20776/20776 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 11613 event pairs, 0 based on Foata normal form. 0/2699 useless extension candidates. Maximal degree in co-relation 4523. Up to 100 conditions per place. [2023-09-01 11:03:08,964 INFO L119 LiptonReduction]: Number of co-enabled transitions 2590336 [2023-09-01 11:03:21,628 INFO L134 LiptonReduction]: Checked pairs total: 7252447 [2023-09-01 11:03:21,628 INFO L136 LiptonReduction]: Total number of compositions: 1029 [2023-09-01 11:03:21,630 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:03:21,630 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:03:21,630 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:03:22,179 INFO L130 PetriNetUnfolder]: 438/1418 cut-off events. [2023-09-01 11:03:22,179 INFO L131 PetriNetUnfolder]: For 20776/20776 co-relation queries the response was YES. [2023-09-01 11:03:22,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:03:22,179 INFO L208 CegarLoopForPetriNet]: trace histogram [50, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:03:22,179 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:03:22,180 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:03:22,180 INFO L85 PathProgramCache]: Analyzing trace with hash -720157999, now seen corresponding path program 1 times [2023-09-01 11:03:22,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:03:22,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492427534] [2023-09-01 11:03:22,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:03:22,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:03:22,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:03:22,253 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:03:22,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:03:22,344 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:03:22,345 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:03:22,345 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:03:22,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-09-01 11:03:22,345 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:03:22,346 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:03:22,346 WARN L233 ceAbstractionStarter]: 49 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:03:22,346 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 50 thread instances. [2023-09-01 11:03:22,445 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 11:03:22,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1511 places, 1714 transitions, 6128 flow [2023-09-01 11:03:25,053 INFO L130 PetriNetUnfolder]: 504/3359 cut-off events. [2023-09-01 11:03:25,053 INFO L131 PetriNetUnfolder]: For 22050/22050 co-relation queries the response was YES. [2023-09-01 11:03:25,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4785 conditions, 3359 events. 504/3359 cut-off events. For 22050/22050 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 11843 event pairs, 0 based on Foata normal form. 0/2753 useless extension candidates. Maximal degree in co-relation 4641. Up to 102 conditions per place. [2023-09-01 11:03:25,293 INFO L82 GeneralOperation]: Start removeDead. Operand has 1511 places, 1714 transitions, 6128 flow [2023-09-01 11:03:25,353 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1511 places, 1714 transitions, 6128 flow [2023-09-01 11:03:25,353 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:03:25,353 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1511 places, 1714 transitions, 6128 flow [2023-09-01 11:03:25,353 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1511 places, 1714 transitions, 6128 flow [2023-09-01 11:03:25,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1511 places, 1714 transitions, 6128 flow [2023-09-01 11:03:27,905 INFO L130 PetriNetUnfolder]: 504/3359 cut-off events. [2023-09-01 11:03:27,905 INFO L131 PetriNetUnfolder]: For 22050/22050 co-relation queries the response was YES. [2023-09-01 11:03:28,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4785 conditions, 3359 events. 504/3359 cut-off events. For 22050/22050 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 11843 event pairs, 0 based on Foata normal form. 0/2753 useless extension candidates. Maximal degree in co-relation 4641. Up to 102 conditions per place. [2023-09-01 11:03:28,839 INFO L119 LiptonReduction]: Number of co-enabled transitions 2696000 [2023-09-01 11:03:42,024 INFO L134 LiptonReduction]: Checked pairs total: 6776485 [2023-09-01 11:03:42,024 INFO L136 LiptonReduction]: Total number of compositions: 1042 [2023-09-01 11:03:42,026 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:03:42,026 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:03:42,026 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:03:42,528 INFO L130 PetriNetUnfolder]: 447/1447 cut-off events. [2023-09-01 11:03:42,528 INFO L131 PetriNetUnfolder]: For 22050/22050 co-relation queries the response was YES. [2023-09-01 11:03:42,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:03:42,528 INFO L208 CegarLoopForPetriNet]: trace histogram [51, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:03:42,528 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:03:42,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:03:42,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1381193960, now seen corresponding path program 1 times [2023-09-01 11:03:42,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:03:42,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687746691] [2023-09-01 11:03:42,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:03:42,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:03:42,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:03:42,605 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:03:42,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:03:42,707 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:03:42,707 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:03:42,707 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:03:42,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-09-01 11:03:42,708 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:03:42,708 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:03:42,708 WARN L233 ceAbstractionStarter]: 50 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:03:42,708 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 51 thread instances. [2023-09-01 11:03:42,816 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 11:03:42,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1540 places, 1747 transitions, 6299 flow [2023-09-01 11:03:45,366 INFO L130 PetriNetUnfolder]: 514/3425 cut-off events. [2023-09-01 11:03:45,367 INFO L131 PetriNetUnfolder]: For 23375/23375 co-relation queries the response was YES. [2023-09-01 11:03:45,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4905 conditions, 3425 events. 514/3425 cut-off events. For 23375/23375 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 12039 event pairs, 0 based on Foata normal form. 0/2807 useless extension candidates. Maximal degree in co-relation 4760. Up to 104 conditions per place. [2023-09-01 11:03:45,645 INFO L82 GeneralOperation]: Start removeDead. Operand has 1540 places, 1747 transitions, 6299 flow [2023-09-01 11:03:45,716 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1540 places, 1747 transitions, 6299 flow [2023-09-01 11:03:45,717 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:03:45,717 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1540 places, 1747 transitions, 6299 flow [2023-09-01 11:03:45,717 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1540 places, 1747 transitions, 6299 flow [2023-09-01 11:03:45,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1540 places, 1747 transitions, 6299 flow [2023-09-01 11:03:48,391 INFO L130 PetriNetUnfolder]: 514/3425 cut-off events. [2023-09-01 11:03:48,392 INFO L131 PetriNetUnfolder]: For 23375/23375 co-relation queries the response was YES. [2023-09-01 11:03:48,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4905 conditions, 3425 events. 514/3425 cut-off events. For 23375/23375 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 12039 event pairs, 0 based on Foata normal form. 0/2807 useless extension candidates. Maximal degree in co-relation 4760. Up to 104 conditions per place. [2023-09-01 11:03:49,626 INFO L119 LiptonReduction]: Number of co-enabled transitions 2803776 [2023-09-01 11:04:03,318 INFO L134 LiptonReduction]: Checked pairs total: 7008943 [2023-09-01 11:04:03,319 INFO L136 LiptonReduction]: Total number of compositions: 1053 [2023-09-01 11:04:03,320 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:04:03,320 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:04:03,320 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:04:03,939 INFO L130 PetriNetUnfolder]: 402/1421 cut-off events. [2023-09-01 11:04:03,939 INFO L131 PetriNetUnfolder]: For 23375/23375 co-relation queries the response was YES. [2023-09-01 11:04:03,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:04:03,939 INFO L208 CegarLoopForPetriNet]: trace histogram [52, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:04:03,939 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:04:03,940 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:04:03,940 INFO L85 PathProgramCache]: Analyzing trace with hash -357643941, now seen corresponding path program 1 times [2023-09-01 11:04:03,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:04:03,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552476069] [2023-09-01 11:04:03,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:04:03,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:04:04,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:04:04,028 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:04:04,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:04:04,127 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:04:04,127 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:04:04,128 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:04:04,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-09-01 11:04:04,128 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:04:04,128 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:04:04,128 WARN L233 ceAbstractionStarter]: 51 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:04:04,128 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 52 thread instances. [2023-09-01 11:04:04,246 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 11:04:04,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1569 places, 1780 transitions, 6472 flow [2023-09-01 11:04:07,121 INFO L130 PetriNetUnfolder]: 524/3491 cut-off events. [2023-09-01 11:04:07,121 INFO L131 PetriNetUnfolder]: For 24752/24752 co-relation queries the response was YES. [2023-09-01 11:04:07,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5026 conditions, 3491 events. 524/3491 cut-off events. For 24752/24752 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 12249 event pairs, 0 based on Foata normal form. 0/2861 useless extension candidates. Maximal degree in co-relation 4880. Up to 106 conditions per place. [2023-09-01 11:04:07,381 INFO L82 GeneralOperation]: Start removeDead. Operand has 1569 places, 1780 transitions, 6472 flow [2023-09-01 11:04:07,445 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1569 places, 1780 transitions, 6472 flow [2023-09-01 11:04:07,445 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:04:07,445 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1569 places, 1780 transitions, 6472 flow [2023-09-01 11:04:07,446 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1569 places, 1780 transitions, 6472 flow [2023-09-01 11:04:07,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1569 places, 1780 transitions, 6472 flow [2023-09-01 11:04:10,159 INFO L130 PetriNetUnfolder]: 524/3491 cut-off events. [2023-09-01 11:04:10,160 INFO L131 PetriNetUnfolder]: For 24752/24752 co-relation queries the response was YES. [2023-09-01 11:04:10,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5026 conditions, 3491 events. 524/3491 cut-off events. For 24752/24752 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 12249 event pairs, 0 based on Foata normal form. 0/2861 useless extension candidates. Maximal degree in co-relation 4880. Up to 106 conditions per place. [2023-09-01 11:04:11,210 INFO L119 LiptonReduction]: Number of co-enabled transitions 2913664 [2023-09-01 11:04:24,927 INFO L134 LiptonReduction]: Checked pairs total: 7322986 [2023-09-01 11:04:24,927 INFO L136 LiptonReduction]: Total number of compositions: 1085 [2023-09-01 11:04:24,928 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:04:24,929 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:04:24,929 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:04:25,444 INFO L130 PetriNetUnfolder]: 465/1505 cut-off events. [2023-09-01 11:04:25,444 INFO L131 PetriNetUnfolder]: For 24752/24752 co-relation queries the response was YES. [2023-09-01 11:04:25,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:04:25,445 INFO L208 CegarLoopForPetriNet]: trace histogram [53, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:04:25,445 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:04:25,445 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:04:25,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1023106925, now seen corresponding path program 1 times [2023-09-01 11:04:25,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:04:25,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474097432] [2023-09-01 11:04:25,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:04:25,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:04:25,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:04:25,517 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:04:25,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:04:25,625 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:04:25,626 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:04:25,626 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:04:25,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-09-01 11:04:25,626 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:04:25,626 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:04:25,627 WARN L233 ceAbstractionStarter]: 52 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:04:25,627 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 53 thread instances. [2023-09-01 11:04:25,807 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 11:04:25,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1598 places, 1813 transitions, 6647 flow [2023-09-01 11:04:28,567 INFO L130 PetriNetUnfolder]: 534/3557 cut-off events. [2023-09-01 11:04:28,567 INFO L131 PetriNetUnfolder]: For 26182/26182 co-relation queries the response was YES. [2023-09-01 11:04:28,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5148 conditions, 3557 events. 534/3557 cut-off events. For 26182/26182 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 12655 event pairs, 0 based on Foata normal form. 0/2915 useless extension candidates. Maximal degree in co-relation 5001. Up to 108 conditions per place. [2023-09-01 11:04:28,889 INFO L82 GeneralOperation]: Start removeDead. Operand has 1598 places, 1813 transitions, 6647 flow [2023-09-01 11:04:28,972 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1598 places, 1813 transitions, 6647 flow [2023-09-01 11:04:28,972 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:04:28,972 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1598 places, 1813 transitions, 6647 flow [2023-09-01 11:04:28,973 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1598 places, 1813 transitions, 6647 flow [2023-09-01 11:04:28,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1598 places, 1813 transitions, 6647 flow [2023-09-01 11:04:31,781 INFO L130 PetriNetUnfolder]: 534/3557 cut-off events. [2023-09-01 11:04:31,781 INFO L131 PetriNetUnfolder]: For 26182/26182 co-relation queries the response was YES. [2023-09-01 11:04:32,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5148 conditions, 3557 events. 534/3557 cut-off events. For 26182/26182 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 12655 event pairs, 0 based on Foata normal form. 0/2915 useless extension candidates. Maximal degree in co-relation 5001. Up to 108 conditions per place. [2023-09-01 11:04:33,173 INFO L119 LiptonReduction]: Number of co-enabled transitions 3025664 [2023-09-01 11:04:47,303 INFO L134 LiptonReduction]: Checked pairs total: 7582358 [2023-09-01 11:04:47,303 INFO L136 LiptonReduction]: Total number of compositions: 1096 [2023-09-01 11:04:47,305 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:04:47,305 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:04:47,305 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:04:47,935 INFO L130 PetriNetUnfolder]: 474/1534 cut-off events. [2023-09-01 11:04:47,935 INFO L131 PetriNetUnfolder]: For 26182/26182 co-relation queries the response was YES. [2023-09-01 11:04:47,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:04:47,935 INFO L208 CegarLoopForPetriNet]: trace histogram [54, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:04:47,935 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:04:47,936 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:04:47,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1196267033, now seen corresponding path program 1 times [2023-09-01 11:04:47,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:04:47,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518227630] [2023-09-01 11:04:47,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:04:47,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:04:48,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:04:48,010 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:04:48,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:04:48,110 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:04:48,111 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:04:48,111 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:04:48,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-09-01 11:04:48,111 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:04:48,111 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:04:48,111 WARN L233 ceAbstractionStarter]: 53 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:04:48,112 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 54 thread instances. [2023-09-01 11:04:48,223 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 11:04:48,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1627 places, 1846 transitions, 6824 flow [2023-09-01 11:04:51,052 INFO L130 PetriNetUnfolder]: 544/3623 cut-off events. [2023-09-01 11:04:51,052 INFO L131 PetriNetUnfolder]: For 27666/27666 co-relation queries the response was YES. [2023-09-01 11:04:51,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5271 conditions, 3623 events. 544/3623 cut-off events. For 27666/27666 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 12773 event pairs, 0 based on Foata normal form. 0/2969 useless extension candidates. Maximal degree in co-relation 5123. Up to 110 conditions per place. [2023-09-01 11:04:51,377 INFO L82 GeneralOperation]: Start removeDead. Operand has 1627 places, 1846 transitions, 6824 flow [2023-09-01 11:04:51,457 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1627 places, 1846 transitions, 6824 flow [2023-09-01 11:04:51,458 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:04:51,458 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1627 places, 1846 transitions, 6824 flow [2023-09-01 11:04:51,458 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1627 places, 1846 transitions, 6824 flow [2023-09-01 11:04:51,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1627 places, 1846 transitions, 6824 flow [2023-09-01 11:04:54,397 INFO L130 PetriNetUnfolder]: 544/3623 cut-off events. [2023-09-01 11:04:54,397 INFO L131 PetriNetUnfolder]: For 27666/27666 co-relation queries the response was YES. [2023-09-01 11:04:54,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5271 conditions, 3623 events. 544/3623 cut-off events. For 27666/27666 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 12773 event pairs, 0 based on Foata normal form. 0/2969 useless extension candidates. Maximal degree in co-relation 5123. Up to 110 conditions per place. [2023-09-01 11:04:55,786 INFO L119 LiptonReduction]: Number of co-enabled transitions 3139776 [2023-09-01 11:05:10,070 INFO L134 LiptonReduction]: Checked pairs total: 7927177 [2023-09-01 11:05:10,070 INFO L136 LiptonReduction]: Total number of compositions: 1131 [2023-09-01 11:05:10,071 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:05:10,072 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:05:10,072 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:05:10,704 INFO L130 PetriNetUnfolder]: 483/1563 cut-off events. [2023-09-01 11:05:10,704 INFO L131 PetriNetUnfolder]: For 27666/27666 co-relation queries the response was YES. [2023-09-01 11:05:10,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:05:10,704 INFO L208 CegarLoopForPetriNet]: trace histogram [55, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:05:10,705 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:05:10,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:05:10,705 INFO L85 PathProgramCache]: Analyzing trace with hash 238949616, now seen corresponding path program 1 times [2023-09-01 11:05:10,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:05:10,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408313302] [2023-09-01 11:05:10,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:05:10,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:05:10,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:05:10,792 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:05:10,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:05:10,904 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:05:10,904 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:05:10,904 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:05:10,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-09-01 11:05:10,905 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:05:10,905 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:05:10,905 WARN L233 ceAbstractionStarter]: 54 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:05:10,905 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 55 thread instances. [2023-09-01 11:05:11,026 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 11:05:11,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1656 places, 1879 transitions, 7003 flow [2023-09-01 11:05:14,024 INFO L130 PetriNetUnfolder]: 554/3689 cut-off events. [2023-09-01 11:05:14,025 INFO L131 PetriNetUnfolder]: For 29205/29205 co-relation queries the response was YES. [2023-09-01 11:05:14,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5395 conditions, 3689 events. 554/3689 cut-off events. For 29205/29205 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 12792 event pairs, 0 based on Foata normal form. 0/3023 useless extension candidates. Maximal degree in co-relation 5246. Up to 112 conditions per place. [2023-09-01 11:05:14,356 INFO L82 GeneralOperation]: Start removeDead. Operand has 1656 places, 1879 transitions, 7003 flow [2023-09-01 11:05:14,442 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1656 places, 1879 transitions, 7003 flow [2023-09-01 11:05:14,442 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:05:14,443 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1656 places, 1879 transitions, 7003 flow [2023-09-01 11:05:14,443 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1656 places, 1879 transitions, 7003 flow [2023-09-01 11:05:14,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1656 places, 1879 transitions, 7003 flow [2023-09-01 11:05:17,439 INFO L130 PetriNetUnfolder]: 554/3689 cut-off events. [2023-09-01 11:05:17,439 INFO L131 PetriNetUnfolder]: For 29205/29205 co-relation queries the response was YES. [2023-09-01 11:05:17,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5395 conditions, 3689 events. 554/3689 cut-off events. For 29205/29205 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 12792 event pairs, 0 based on Foata normal form. 0/3023 useless extension candidates. Maximal degree in co-relation 5246. Up to 112 conditions per place. [2023-09-01 11:05:18,852 INFO L119 LiptonReduction]: Number of co-enabled transitions 3256000 [2023-09-01 11:05:33,437 INFO L134 LiptonReduction]: Checked pairs total: 8176187 [2023-09-01 11:05:33,437 INFO L136 LiptonReduction]: Total number of compositions: 1145 [2023-09-01 11:05:33,439 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:05:33,439 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:05:33,439 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:05:34,011 INFO L130 PetriNetUnfolder]: 492/1592 cut-off events. [2023-09-01 11:05:34,011 INFO L131 PetriNetUnfolder]: For 29205/29205 co-relation queries the response was YES. [2023-09-01 11:05:34,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:05:34,012 INFO L208 CegarLoopForPetriNet]: trace histogram [56, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:05:34,012 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:05:34,012 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:05:34,012 INFO L85 PathProgramCache]: Analyzing trace with hash -75315408, now seen corresponding path program 1 times [2023-09-01 11:05:34,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:05:34,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045844383] [2023-09-01 11:05:34,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:05:34,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:05:34,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:05:34,118 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:05:34,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:05:34,252 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:05:34,252 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:05:34,253 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:05:34,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-09-01 11:05:34,253 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:05:34,254 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:05:34,254 WARN L233 ceAbstractionStarter]: 55 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:05:34,254 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 56 thread instances. [2023-09-01 11:05:34,366 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 11:05:34,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1685 places, 1912 transitions, 7184 flow [2023-09-01 11:05:37,448 INFO L130 PetriNetUnfolder]: 564/3755 cut-off events. [2023-09-01 11:05:37,448 INFO L131 PetriNetUnfolder]: For 30800/30800 co-relation queries the response was YES. [2023-09-01 11:05:37,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5520 conditions, 3755 events. 564/3755 cut-off events. For 30800/30800 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 13008 event pairs, 0 based on Foata normal form. 0/3077 useless extension candidates. Maximal degree in co-relation 5370. Up to 114 conditions per place. [2023-09-01 11:05:37,827 INFO L82 GeneralOperation]: Start removeDead. Operand has 1685 places, 1912 transitions, 7184 flow [2023-09-01 11:05:38,132 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1685 places, 1912 transitions, 7184 flow [2023-09-01 11:05:38,132 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:05:38,133 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1685 places, 1912 transitions, 7184 flow [2023-09-01 11:05:38,133 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1685 places, 1912 transitions, 7184 flow [2023-09-01 11:05:38,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1685 places, 1912 transitions, 7184 flow [2023-09-01 11:05:41,250 INFO L130 PetriNetUnfolder]: 564/3755 cut-off events. [2023-09-01 11:05:41,250 INFO L131 PetriNetUnfolder]: For 30800/30800 co-relation queries the response was YES. [2023-09-01 11:05:41,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5520 conditions, 3755 events. 564/3755 cut-off events. For 30800/30800 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 13008 event pairs, 0 based on Foata normal form. 0/3077 useless extension candidates. Maximal degree in co-relation 5370. Up to 114 conditions per place. [2023-09-01 11:05:42,640 INFO L119 LiptonReduction]: Number of co-enabled transitions 3374336 [2023-09-01 11:05:57,287 INFO L134 LiptonReduction]: Checked pairs total: 9401740 [2023-09-01 11:05:57,287 INFO L136 LiptonReduction]: Total number of compositions: 1171 [2023-09-01 11:05:57,288 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:05:57,288 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:05:57,288 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:05:57,996 INFO L130 PetriNetUnfolder]: 501/1621 cut-off events. [2023-09-01 11:05:57,996 INFO L131 PetriNetUnfolder]: For 30800/30800 co-relation queries the response was YES. [2023-09-01 11:05:57,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:05:57,996 INFO L208 CegarLoopForPetriNet]: trace histogram [57, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:05:57,996 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:05:57,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:05:57,997 INFO L85 PathProgramCache]: Analyzing trace with hash 476500371, now seen corresponding path program 1 times [2023-09-01 11:05:57,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:05:57,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537581573] [2023-09-01 11:05:57,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:05:57,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:05:58,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:05:58,089 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:05:58,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:05:58,206 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:05:58,206 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:05:58,206 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:05:58,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-09-01 11:05:58,207 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:05:58,207 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:05:58,207 WARN L233 ceAbstractionStarter]: 56 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:05:58,207 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 57 thread instances. [2023-09-01 11:05:58,312 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 11:05:58,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1714 places, 1945 transitions, 7367 flow [2023-09-01 11:06:01,753 INFO L130 PetriNetUnfolder]: 574/3821 cut-off events. [2023-09-01 11:06:01,754 INFO L131 PetriNetUnfolder]: For 32452/32452 co-relation queries the response was YES. [2023-09-01 11:06:02,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5646 conditions, 3821 events. 574/3821 cut-off events. For 32452/32452 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 13358 event pairs, 0 based on Foata normal form. 0/3131 useless extension candidates. Maximal degree in co-relation 5495. Up to 116 conditions per place. [2023-09-01 11:06:02,283 INFO L82 GeneralOperation]: Start removeDead. Operand has 1714 places, 1945 transitions, 7367 flow [2023-09-01 11:06:02,422 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1714 places, 1945 transitions, 7367 flow [2023-09-01 11:06:02,422 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:06:02,422 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1714 places, 1945 transitions, 7367 flow [2023-09-01 11:06:02,422 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1714 places, 1945 transitions, 7367 flow [2023-09-01 11:06:02,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1714 places, 1945 transitions, 7367 flow [2023-09-01 11:06:06,165 INFO L130 PetriNetUnfolder]: 574/3821 cut-off events. [2023-09-01 11:06:06,166 INFO L131 PetriNetUnfolder]: For 32452/32452 co-relation queries the response was YES. [2023-09-01 11:06:06,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5646 conditions, 3821 events. 574/3821 cut-off events. For 32452/32452 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 13358 event pairs, 0 based on Foata normal form. 0/3131 useless extension candidates. Maximal degree in co-relation 5495. Up to 116 conditions per place. [2023-09-01 11:06:07,707 INFO L119 LiptonReduction]: Number of co-enabled transitions 3494784 [2023-09-01 11:06:22,733 INFO L134 LiptonReduction]: Checked pairs total: 8730108 [2023-09-01 11:06:22,733 INFO L136 LiptonReduction]: Total number of compositions: 1189 [2023-09-01 11:06:22,734 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:06:22,735 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;@2f1b405b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:06:22,735 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:06:23,356 INFO L130 PetriNetUnfolder]: 510/1650 cut-off events. [2023-09-01 11:06:23,356 INFO L131 PetriNetUnfolder]: For 32452/32452 co-relation queries the response was YES. [2023-09-01 11:06:23,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:06:23,356 INFO L208 CegarLoopForPetriNet]: trace histogram [58, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:06:23,356 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:06:23,356 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:06:23,356 INFO L85 PathProgramCache]: Analyzing trace with hash 565858301, now seen corresponding path program 1 times [2023-09-01 11:06:23,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:06:23,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179027590] [2023-09-01 11:06:23,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:06:23,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:06:23,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:06:23,500 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:06:23,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:06:23,623 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:06:23,623 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:06:23,623 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:06:23,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-09-01 11:06:23,624 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:06:23,624 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:06:23,624 WARN L233 ceAbstractionStarter]: 57 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:06:23,624 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 58 thread instances. [2023-09-01 11:06:23,745 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 11:06:23,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1743 places, 1978 transitions, 7552 flow [2023-09-01 11:06:27,280 INFO L130 PetriNetUnfolder]: 584/3887 cut-off events. [2023-09-01 11:06:27,280 INFO L131 PetriNetUnfolder]: For 34162/34162 co-relation queries the response was YES. [2023-09-01 11:06:27,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5773 conditions, 3887 events. 584/3887 cut-off events. For 34162/34162 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 13482 event pairs, 0 based on Foata normal form. 0/3185 useless extension candidates. Maximal degree in co-relation 5621. Up to 118 conditions per place. [2023-09-01 11:06:27,629 INFO L82 GeneralOperation]: Start removeDead. Operand has 1743 places, 1978 transitions, 7552 flow [2023-09-01 11:06:27,714 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1743 places, 1978 transitions, 7552 flow [2023-09-01 11:06:27,714 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:06:27,714 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1743 places, 1978 transitions, 7552 flow [2023-09-01 11:06:27,714 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1743 places, 1978 transitions, 7552 flow [2023-09-01 11:06:27,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1743 places, 1978 transitions, 7552 flow