./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_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_61-invariant_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 3465c34fa1c26a5c7a3494350123ab41e5828c33cb08ac3f67b81737d460e559 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 11:07:03,020 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 11:07:03,022 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 11:07:03,056 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 11:07:03,057 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 11:07:03,060 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 11:07:03,062 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 11:07:03,064 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 11:07:03,066 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 11:07:03,066 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 11:07:03,067 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 11:07:03,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 11:07:03,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 11:07:03,073 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 11:07:03,074 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 11:07:03,076 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 11:07:03,076 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 11:07:03,077 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 11:07:03,078 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 11:07:03,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 11:07:03,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 11:07:03,090 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 11:07:03,090 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 11:07:03,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 11:07:03,094 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 11:07:03,094 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 11:07:03,094 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 11:07:03,095 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 11:07:03,096 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 11:07:03,096 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 11:07:03,097 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 11:07:03,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 11:07:03,098 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 11:07:03,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 11:07:03,100 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 11:07:03,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 11:07:03,100 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 11:07:03,101 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 11:07:03,101 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 11:07:03,102 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 11:07:03,102 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 11:07:03,104 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 11:07:03,134 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 11:07:03,134 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 11:07:03,135 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 11:07:03,136 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 11:07:03,136 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 11:07:03,137 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 11:07:03,137 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 11:07:03,137 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 11:07:03,138 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 11:07:03,138 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 11:07:03,139 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 11:07:03,139 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 11:07:03,139 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 11:07:03,139 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 11:07:03,139 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 11:07:03,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 11:07:03,140 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 11:07:03,140 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 11:07:03,140 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 11:07:03,140 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 11:07:03,141 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 11:07:03,141 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 11:07:03,141 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 11:07:03,141 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 11:07:03,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 11:07:03,142 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 11:07:03,142 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 11:07:03,142 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 11:07:03,142 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 11:07:03,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 11:07:03,143 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 11:07:03,143 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 11:07:03,143 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 11:07:03,143 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 11:07:03,143 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 11:07:03,144 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3465c34fa1c26a5c7a3494350123ab41e5828c33cb08ac3f67b81737d460e559 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 11:07:03,446 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 11:07:03,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 11:07:03,466 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 11:07:03,467 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 11:07:03,467 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 11:07:03,468 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_racing.i [2023-09-01 11:07:04,738 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 11:07:04,997 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 11:07:04,998 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_racing.i [2023-09-01 11:07:05,009 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edf3e2aa2/d5bd972759594c51b01275e7be0835d4/FLAG7cc342013 [2023-09-01 11:07:05,023 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edf3e2aa2/d5bd972759594c51b01275e7be0835d4 [2023-09-01 11:07:05,025 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 11:07:05,026 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 11:07:05,027 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 11:07:05,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 11:07:05,030 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 11:07:05,031 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 11:07:05" (1/1) ... [2023-09-01 11:07:05,032 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b53ee2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:07:05, skipping insertion in model container [2023-09-01 11:07:05,032 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 11:07:05" (1/1) ... [2023-09-01 11:07:05,037 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 11:07:05,083 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 11:07:05,380 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_61-invariant_racing.i[30176,30189] [2023-09-01 11:07:05,440 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 11:07:05,455 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 11:07:05,489 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_61-invariant_racing.i[30176,30189] [2023-09-01 11:07:05,508 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 11:07:05,550 INFO L208 MainTranslator]: Completed translation [2023-09-01 11:07:05,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:07:05 WrapperNode [2023-09-01 11:07:05,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 11:07:05,551 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 11:07:05,552 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 11:07:05,552 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 11:07:05,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:07:05" (1/1) ... [2023-09-01 11:07:05,585 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:07:05" (1/1) ... [2023-09-01 11:07:05,613 INFO L138 Inliner]: procedures = 170, calls = 32, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 96 [2023-09-01 11:07:05,614 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 11:07:05,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 11:07:05,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 11:07:05,615 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 11:07:05,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:07:05" (1/1) ... [2023-09-01 11:07:05,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:07:05" (1/1) ... [2023-09-01 11:07:05,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:07:05" (1/1) ... [2023-09-01 11:07:05,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:07:05" (1/1) ... [2023-09-01 11:07:05,634 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:07:05" (1/1) ... [2023-09-01 11:07:05,645 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:07:05" (1/1) ... [2023-09-01 11:07:05,649 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:07:05" (1/1) ... [2023-09-01 11:07:05,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:07:05" (1/1) ... [2023-09-01 11:07:05,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 11:07:05,663 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 11:07:05,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 11:07:05,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 11:07:05,666 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:07:05" (1/1) ... [2023-09-01 11:07:05,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 11:07:05,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 11:07:05,691 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 11:07:05,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 11:07:05,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 11:07:05,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 11:07:05,721 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 11:07:05,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 11:07:05,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 11:07:05,721 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 11:07:05,721 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 11:07:05,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 11:07:05,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 11:07:05,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 11:07:05,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 11:07:05,723 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 11:07:05,897 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 11:07:05,899 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 11:07:06,083 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 11:07:06,089 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 11:07:06,092 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-09-01 11:07:06,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 11:07:06 BoogieIcfgContainer [2023-09-01 11:07:06,097 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 11:07:06,099 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 11:07:06,100 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 11:07:06,103 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 11:07:06,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 11:07:05" (1/3) ... [2023-09-01 11:07:06,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40bd890c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 11:07:06, skipping insertion in model container [2023-09-01 11:07:06,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:07:05" (2/3) ... [2023-09-01 11:07:06,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40bd890c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 11:07:06, skipping insertion in model container [2023-09-01 11:07:06,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 11:07:06" (3/3) ... [2023-09-01 11:07:06,106 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_61-invariant_racing.i [2023-09-01 11:07:06,114 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 11:07:06,123 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 11:07:06,124 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 11:07:06,124 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 11:07:06,193 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 11:07:06,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 124 transitions, 256 flow [2023-09-01 11:07:06,328 INFO L130 PetriNetUnfolder]: 30/179 cut-off events. [2023-09-01 11:07:06,329 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 11:07:06,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 179 events. 30/179 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 522 event pairs, 0 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 91. Up to 6 conditions per place. [2023-09-01 11:07:06,335 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 124 transitions, 256 flow [2023-09-01 11:07:06,342 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 119 transitions, 243 flow [2023-09-01 11:07:06,345 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:07:06,357 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 119 transitions, 243 flow [2023-09-01 11:07:06,361 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 119 transitions, 243 flow [2023-09-01 11:07:06,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 119 transitions, 243 flow [2023-09-01 11:07:06,411 INFO L130 PetriNetUnfolder]: 29/174 cut-off events. [2023-09-01 11:07:06,411 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 11:07:06,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 174 events. 29/174 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 512 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 91. Up to 6 conditions per place. [2023-09-01 11:07:06,415 INFO L119 LiptonReduction]: Number of co-enabled transitions 3782 [2023-09-01 11:07:08,513 INFO L134 LiptonReduction]: Checked pairs total: 9323 [2023-09-01 11:07:08,514 INFO L136 LiptonReduction]: Total number of compositions: 86 [2023-09-01 11:07:08,525 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:07:08,531 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;@6a1dc27e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:07:08,531 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:07:08,542 INFO L130 PetriNetUnfolder]: 7/37 cut-off events. [2023-09-01 11:07:08,542 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 11:07:08,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:07:08,543 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 11:07:08,544 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:07:08,547 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:07:08,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1053724504, now seen corresponding path program 1 times [2023-09-01 11:07:08,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:07:08,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883764438] [2023-09-01 11:07:08,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:07:08,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:07:08,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:07:08,677 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:07:08,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:07:08,728 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:07:08,732 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:07:08,733 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:07:08,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 11:07:08,735 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:07:08,741 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:07:08,742 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:07:08,742 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 11:07:08,767 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 11:07:08,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 135 places, 157 transitions, 332 flow [2023-09-01 11:07:08,816 INFO L130 PetriNetUnfolder]: 51/291 cut-off events. [2023-09-01 11:07:08,816 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 11:07:08,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 291 events. 51/291 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 965 event pairs, 0 based on Foata normal form. 0/233 useless extension candidates. Maximal degree in co-relation 181. Up to 9 conditions per place. [2023-09-01 11:07:08,821 INFO L82 GeneralOperation]: Start removeDead. Operand has 135 places, 157 transitions, 332 flow [2023-09-01 11:07:08,824 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 157 transitions, 332 flow [2023-09-01 11:07:08,824 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:07:08,824 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 135 places, 157 transitions, 332 flow [2023-09-01 11:07:08,824 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 135 places, 157 transitions, 332 flow [2023-09-01 11:07:08,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 135 places, 157 transitions, 332 flow [2023-09-01 11:07:08,868 INFO L130 PetriNetUnfolder]: 51/291 cut-off events. [2023-09-01 11:07:08,869 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 11:07:08,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 291 events. 51/291 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 965 event pairs, 0 based on Foata normal form. 0/233 useless extension candidates. Maximal degree in co-relation 181. Up to 9 conditions per place. [2023-09-01 11:07:08,877 INFO L119 LiptonReduction]: Number of co-enabled transitions 10168 [2023-09-01 11:07:10,920 INFO L134 LiptonReduction]: Checked pairs total: 31064 [2023-09-01 11:07:10,921 INFO L136 LiptonReduction]: Total number of compositions: 103 [2023-09-01 11:07:10,923 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:07:10,924 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;@6a1dc27e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:07:10,925 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:07:10,931 INFO L130 PetriNetUnfolder]: 22/89 cut-off events. [2023-09-01 11:07:10,931 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 11:07:10,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:07:10,931 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 11:07:10,932 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:07:10,932 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:07:10,932 INFO L85 PathProgramCache]: Analyzing trace with hash 964070072, now seen corresponding path program 1 times [2023-09-01 11:07:10,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:07:10,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760801020] [2023-09-01 11:07:10,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:07:10,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:07:10,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:07:10,956 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:07:10,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:07:10,977 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:07:10,978 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:07:10,978 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:07:10,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 11:07:10,978 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:07:10,979 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:07:10,979 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:07:10,979 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 11:07:11,005 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 11:07:11,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 190 transitions, 410 flow [2023-09-01 11:07:11,058 INFO L130 PetriNetUnfolder]: 77/434 cut-off events. [2023-09-01 11:07:11,058 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 11:07:11,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 434 events. 77/434 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1576 event pairs, 1 based on Foata normal form. 0/349 useless extension candidates. Maximal degree in co-relation 299. Up to 16 conditions per place. [2023-09-01 11:07:11,064 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 190 transitions, 410 flow [2023-09-01 11:07:11,068 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 190 transitions, 410 flow [2023-09-01 11:07:11,073 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:07:11,074 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 162 places, 190 transitions, 410 flow [2023-09-01 11:07:11,074 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 162 places, 190 transitions, 410 flow [2023-09-01 11:07:11,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 190 transitions, 410 flow [2023-09-01 11:07:11,130 INFO L130 PetriNetUnfolder]: 77/434 cut-off events. [2023-09-01 11:07:11,130 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 11:07:11,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 434 events. 77/434 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1576 event pairs, 1 based on Foata normal form. 0/349 useless extension candidates. Maximal degree in co-relation 299. Up to 16 conditions per place. [2023-09-01 11:07:11,148 INFO L119 LiptonReduction]: Number of co-enabled transitions 18414 [2023-09-01 11:07:13,350 INFO L134 LiptonReduction]: Checked pairs total: 61724 [2023-09-01 11:07:13,351 INFO L136 LiptonReduction]: Total number of compositions: 118 [2023-09-01 11:07:13,352 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:07:13,353 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;@6a1dc27e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:07:13,353 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:07:13,362 INFO L130 PetriNetUnfolder]: 38/143 cut-off events. [2023-09-01 11:07:13,362 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 11:07:13,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:07:13,363 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 11:07:13,363 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:07:13,363 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:07:13,364 INFO L85 PathProgramCache]: Analyzing trace with hash 378172606, now seen corresponding path program 1 times [2023-09-01 11:07:13,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:07:13,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662988609] [2023-09-01 11:07:13,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:07:13,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:07:13,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:07:13,396 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:07:13,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:07:13,431 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:07:13,431 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:07:13,432 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:07:13,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 11:07:13,432 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:07:13,433 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:07:13,433 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:07:13,433 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 11:07:13,464 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 11:07:13,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 189 places, 223 transitions, 490 flow [2023-09-01 11:07:13,544 INFO L130 PetriNetUnfolder]: 115/641 cut-off events. [2023-09-01 11:07:13,544 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 11:07:13,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 696 conditions, 641 events. 115/641 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2577 event pairs, 6 based on Foata normal form. 0/521 useless extension candidates. Maximal degree in co-relation 454. Up to 32 conditions per place. [2023-09-01 11:07:13,551 INFO L82 GeneralOperation]: Start removeDead. Operand has 189 places, 223 transitions, 490 flow [2023-09-01 11:07:13,557 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 189 places, 223 transitions, 490 flow [2023-09-01 11:07:13,557 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:07:13,557 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 189 places, 223 transitions, 490 flow [2023-09-01 11:07:13,557 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 189 places, 223 transitions, 490 flow [2023-09-01 11:07:13,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 189 places, 223 transitions, 490 flow [2023-09-01 11:07:13,622 INFO L130 PetriNetUnfolder]: 115/641 cut-off events. [2023-09-01 11:07:13,622 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 11:07:13,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 696 conditions, 641 events. 115/641 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2577 event pairs, 6 based on Foata normal form. 0/521 useless extension candidates. Maximal degree in co-relation 454. Up to 32 conditions per place. [2023-09-01 11:07:13,648 INFO L119 LiptonReduction]: Number of co-enabled transitions 28768 [2023-09-01 11:07:15,889 INFO L134 LiptonReduction]: Checked pairs total: 101367 [2023-09-01 11:07:15,889 INFO L136 LiptonReduction]: Total number of compositions: 136 [2023-09-01 11:07:15,890 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:07:15,891 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;@6a1dc27e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:07:15,891 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:07:15,904 INFO L130 PetriNetUnfolder]: 54/200 cut-off events. [2023-09-01 11:07:15,905 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2023-09-01 11:07:15,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:07:15,905 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 11:07:15,905 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:07:15,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:07:15,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1033447836, now seen corresponding path program 1 times [2023-09-01 11:07:15,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:07:15,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038275196] [2023-09-01 11:07:15,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:07:15,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:07:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:07:15,929 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:07:15,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:07:15,948 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:07:15,949 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:07:15,949 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:07:15,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 11:07:15,949 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:07:15,950 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:07:15,950 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:07:15,950 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 11:07:15,969 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 11:07:15,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 216 places, 256 transitions, 572 flow [2023-09-01 11:07:16,100 INFO L130 PetriNetUnfolder]: 181/980 cut-off events. [2023-09-01 11:07:16,101 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 11:07:16,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1091 conditions, 980 events. 181/980 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 4483 event pairs, 23 based on Foata normal form. 0/809 useless extension candidates. Maximal degree in co-relation 686. Up to 80 conditions per place. [2023-09-01 11:07:16,115 INFO L82 GeneralOperation]: Start removeDead. Operand has 216 places, 256 transitions, 572 flow [2023-09-01 11:07:16,125 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 216 places, 256 transitions, 572 flow [2023-09-01 11:07:16,125 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:07:16,125 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 216 places, 256 transitions, 572 flow [2023-09-01 11:07:16,126 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 216 places, 256 transitions, 572 flow [2023-09-01 11:07:16,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 216 places, 256 transitions, 572 flow [2023-09-01 11:07:16,256 INFO L130 PetriNetUnfolder]: 181/980 cut-off events. [2023-09-01 11:07:16,257 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 11:07:16,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1091 conditions, 980 events. 181/980 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 4483 event pairs, 23 based on Foata normal form. 0/809 useless extension candidates. Maximal degree in co-relation 686. Up to 80 conditions per place. [2023-09-01 11:07:16,294 INFO L119 LiptonReduction]: Number of co-enabled transitions 41230 [2023-09-01 11:07:18,554 INFO L134 LiptonReduction]: Checked pairs total: 148905 [2023-09-01 11:07:18,554 INFO L136 LiptonReduction]: Total number of compositions: 152 [2023-09-01 11:07:18,556 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:07:18,557 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;@6a1dc27e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:07:18,557 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:07:18,575 INFO L130 PetriNetUnfolder]: 71/263 cut-off events. [2023-09-01 11:07:18,575 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2023-09-01 11:07:18,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:07:18,575 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:07:18,576 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:07:18,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:07:18,576 INFO L85 PathProgramCache]: Analyzing trace with hash -113812710, now seen corresponding path program 1 times [2023-09-01 11:07:18,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:07:18,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963561127] [2023-09-01 11:07:18,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:07:18,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:07:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:07:18,597 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:07:18,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:07:18,630 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:07:18,632 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:07:18,632 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:07:18,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 11:07:18,633 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:07:18,634 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:07:18,634 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:07:18,635 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 11:07:18,663 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 11:07:18,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 243 places, 289 transitions, 656 flow [2023-09-01 11:07:18,889 INFO L130 PetriNetUnfolder]: 311/1591 cut-off events. [2023-09-01 11:07:18,890 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 11:07:18,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1823 conditions, 1591 events. 311/1591 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 8718 event pairs, 72 based on Foata normal form. 0/1337 useless extension candidates. Maximal degree in co-relation 1079. Up to 192 conditions per place. [2023-09-01 11:07:18,922 INFO L82 GeneralOperation]: Start removeDead. Operand has 243 places, 289 transitions, 656 flow [2023-09-01 11:07:18,975 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 243 places, 289 transitions, 656 flow [2023-09-01 11:07:18,975 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:07:18,975 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 243 places, 289 transitions, 656 flow [2023-09-01 11:07:18,975 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 243 places, 289 transitions, 656 flow [2023-09-01 11:07:18,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 243 places, 289 transitions, 656 flow [2023-09-01 11:07:19,231 INFO L130 PetriNetUnfolder]: 311/1591 cut-off events. [2023-09-01 11:07:19,232 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 11:07:19,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1823 conditions, 1591 events. 311/1591 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 8718 event pairs, 72 based on Foata normal form. 0/1337 useless extension candidates. Maximal degree in co-relation 1079. Up to 192 conditions per place. [2023-09-01 11:07:19,298 INFO L119 LiptonReduction]: Number of co-enabled transitions 55800 [2023-09-01 11:07:21,600 INFO L134 LiptonReduction]: Checked pairs total: 204764 [2023-09-01 11:07:21,600 INFO L136 LiptonReduction]: Total number of compositions: 171 [2023-09-01 11:07:21,602 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:07:21,602 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;@6a1dc27e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:07:21,602 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:07:21,624 INFO L130 PetriNetUnfolder]: 90/333 cut-off events. [2023-09-01 11:07:21,624 INFO L131 PetriNetUnfolder]: For 70/70 co-relation queries the response was YES. [2023-09-01 11:07:21,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:07:21,625 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:07:21,625 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:07:21,625 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:07:21,626 INFO L85 PathProgramCache]: Analyzing trace with hash 801598353, now seen corresponding path program 1 times [2023-09-01 11:07:21,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:07:21,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557434975] [2023-09-01 11:07:21,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:07:21,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:07:21,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:07:21,653 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:07:21,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:07:21,671 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:07:21,671 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:07:21,672 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:07:21,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 11:07:21,672 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:07:21,673 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:07:21,673 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:07:21,673 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 11:07:21,695 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 11:07:21,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 270 places, 322 transitions, 742 flow [2023-09-01 11:07:22,210 INFO L130 PetriNetUnfolder]: 585/2762 cut-off events. [2023-09-01 11:07:22,210 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 11:07:22,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3260 conditions, 2762 events. 585/2762 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 18067 event pairs, 201 based on Foata normal form. 0/2361 useless extension candidates. Maximal degree in co-relation 1809. Up to 448 conditions per place. [2023-09-01 11:07:22,256 INFO L82 GeneralOperation]: Start removeDead. Operand has 270 places, 322 transitions, 742 flow [2023-09-01 11:07:22,281 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 270 places, 322 transitions, 742 flow [2023-09-01 11:07:22,282 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:07:22,282 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 270 places, 322 transitions, 742 flow [2023-09-01 11:07:22,282 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 270 places, 322 transitions, 742 flow [2023-09-01 11:07:22,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 270 places, 322 transitions, 742 flow [2023-09-01 11:07:22,800 INFO L130 PetriNetUnfolder]: 585/2762 cut-off events. [2023-09-01 11:07:22,800 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 11:07:22,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3260 conditions, 2762 events. 585/2762 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 18067 event pairs, 201 based on Foata normal form. 0/2361 useless extension candidates. Maximal degree in co-relation 1809. Up to 448 conditions per place. [2023-09-01 11:07:22,945 INFO L119 LiptonReduction]: Number of co-enabled transitions 72478 [2023-09-01 11:07:25,429 INFO L134 LiptonReduction]: Checked pairs total: 274556 [2023-09-01 11:07:25,429 INFO L136 LiptonReduction]: Total number of compositions: 184 [2023-09-01 11:07:25,430 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:07:25,431 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;@6a1dc27e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:07:25,431 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:07:25,463 INFO L130 PetriNetUnfolder]: 120/431 cut-off events. [2023-09-01 11:07:25,463 INFO L131 PetriNetUnfolder]: For 113/113 co-relation queries the response was YES. [2023-09-01 11:07:25,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:07:25,463 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:07:25,463 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:07:25,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:07:25,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1748661069, now seen corresponding path program 1 times [2023-09-01 11:07:25,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:07:25,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862983556] [2023-09-01 11:07:25,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:07:25,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:07:25,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:07:25,485 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:07:25,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:07:25,515 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:07:25,519 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:07:25,519 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:07:25,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 11:07:25,519 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:07:25,520 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:07:25,520 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:07:25,520 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 11:07:25,551 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 11:07:25,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 297 places, 355 transitions, 830 flow [2023-09-01 11:07:26,542 INFO L130 PetriNetUnfolder]: 1179/5085 cut-off events. [2023-09-01 11:07:26,542 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 11:07:26,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6170 conditions, 5085 events. 1179/5085 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 39262 event pairs, 522 based on Foata normal form. 0/4409 useless extension candidates. Maximal degree in co-relation 3244. Up to 1024 conditions per place. [2023-09-01 11:07:26,607 INFO L82 GeneralOperation]: Start removeDead. Operand has 297 places, 355 transitions, 830 flow [2023-09-01 11:07:26,652 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 297 places, 355 transitions, 830 flow [2023-09-01 11:07:26,652 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:07:26,653 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 297 places, 355 transitions, 830 flow [2023-09-01 11:07:26,653 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 297 places, 355 transitions, 830 flow [2023-09-01 11:07:26,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 297 places, 355 transitions, 830 flow [2023-09-01 11:07:27,584 INFO L130 PetriNetUnfolder]: 1179/5085 cut-off events. [2023-09-01 11:07:27,584 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 11:07:27,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6170 conditions, 5085 events. 1179/5085 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 39262 event pairs, 522 based on Foata normal form. 0/4409 useless extension candidates. Maximal degree in co-relation 3244. Up to 1024 conditions per place. [2023-09-01 11:07:27,842 INFO L119 LiptonReduction]: Number of co-enabled transitions 91264 [2023-09-01 11:07:30,332 INFO L134 LiptonReduction]: Checked pairs total: 346680 [2023-09-01 11:07:30,332 INFO L136 LiptonReduction]: Total number of compositions: 199 [2023-09-01 11:07:30,334 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:07:30,335 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;@6a1dc27e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:07:30,336 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:07:30,371 INFO L130 PetriNetUnfolder]: 152/540 cut-off events. [2023-09-01 11:07:30,372 INFO L131 PetriNetUnfolder]: For 177/177 co-relation queries the response was YES. [2023-09-01 11:07:30,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:07:30,372 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:07:30,372 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:07:30,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:07:30,373 INFO L85 PathProgramCache]: Analyzing trace with hash -462159935, now seen corresponding path program 1 times [2023-09-01 11:07:30,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:07:30,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85218539] [2023-09-01 11:07:30,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:07:30,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:07:30,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:07:30,411 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:07:30,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:07:30,454 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:07:30,457 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:07:30,457 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:07:30,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 11:07:30,458 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:07:30,459 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:07:30,460 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:07:30,460 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 11:07:30,496 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 11:07:30,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 324 places, 388 transitions, 920 flow [2023-09-01 11:07:32,440 INFO L130 PetriNetUnfolder]: 2477/9776 cut-off events. [2023-09-01 11:07:32,440 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 11:07:32,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12153 conditions, 9776 events. 2477/9776 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 88837 event pairs, 1291 based on Foata normal form. 0/8569 useless extension candidates. Maximal degree in co-relation 6152. Up to 2304 conditions per place. [2023-09-01 11:07:32,598 INFO L82 GeneralOperation]: Start removeDead. Operand has 324 places, 388 transitions, 920 flow [2023-09-01 11:07:32,759 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 324 places, 388 transitions, 920 flow [2023-09-01 11:07:32,760 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:07:32,760 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 324 places, 388 transitions, 920 flow [2023-09-01 11:07:32,760 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 324 places, 388 transitions, 920 flow [2023-09-01 11:07:32,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 324 places, 388 transitions, 920 flow [2023-09-01 11:07:34,591 INFO L130 PetriNetUnfolder]: 2477/9776 cut-off events. [2023-09-01 11:07:34,591 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 11:07:34,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12153 conditions, 9776 events. 2477/9776 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 88837 event pairs, 1291 based on Foata normal form. 0/8569 useless extension candidates. Maximal degree in co-relation 6152. Up to 2304 conditions per place. [2023-09-01 11:07:35,197 INFO L119 LiptonReduction]: Number of co-enabled transitions 112158 [2023-09-01 11:07:37,765 INFO L134 LiptonReduction]: Checked pairs total: 438032 [2023-09-01 11:07:37,765 INFO L136 LiptonReduction]: Total number of compositions: 217 [2023-09-01 11:07:37,766 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:07:37,767 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;@6a1dc27e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:07:37,767 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:07:37,832 INFO L130 PetriNetUnfolder]: 198/684 cut-off events. [2023-09-01 11:07:37,833 INFO L131 PetriNetUnfolder]: For 272/272 co-relation queries the response was YES. [2023-09-01 11:07:37,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:07:37,833 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:07:37,833 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:07:37,833 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:07:37,834 INFO L85 PathProgramCache]: Analyzing trace with hash 2043742784, now seen corresponding path program 1 times [2023-09-01 11:07:37,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:07:37,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465566957] [2023-09-01 11:07:37,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:07:37,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:07:37,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:07:37,852 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:07:37,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:07:37,871 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:07:37,871 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:07:37,871 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:07:37,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 11:07:37,872 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:07:37,872 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:07:37,873 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:07:37,873 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 11:07:37,898 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 11:07:37,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 351 places, 421 transitions, 1012 flow [2023-09-01 11:07:42,079 INFO L130 PetriNetUnfolder]: 5311/19331 cut-off events. [2023-09-01 11:07:42,079 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 11:07:42,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24537 conditions, 19331 events. 5311/19331 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 197972 event pairs, 3084 based on Foata normal form. 0/17081 useless extension candidates. Maximal degree in co-relation 12133. Up to 5120 conditions per place. [2023-09-01 11:07:42,407 INFO L82 GeneralOperation]: Start removeDead. Operand has 351 places, 421 transitions, 1012 flow [2023-09-01 11:07:42,591 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 351 places, 421 transitions, 1012 flow [2023-09-01 11:07:42,591 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:07:42,591 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 351 places, 421 transitions, 1012 flow [2023-09-01 11:07:42,591 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 351 places, 421 transitions, 1012 flow [2023-09-01 11:07:42,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 351 places, 421 transitions, 1012 flow [2023-09-01 11:07:46,685 INFO L130 PetriNetUnfolder]: 5311/19331 cut-off events. [2023-09-01 11:07:46,685 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 11:07:47,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24537 conditions, 19331 events. 5311/19331 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 197972 event pairs, 3084 based on Foata normal form. 0/17081 useless extension candidates. Maximal degree in co-relation 12133. Up to 5120 conditions per place. [2023-09-01 11:07:47,922 INFO L119 LiptonReduction]: Number of co-enabled transitions 135160 [2023-09-01 11:07:50,821 INFO L134 LiptonReduction]: Checked pairs total: 527991 [2023-09-01 11:07:50,821 INFO L136 LiptonReduction]: Total number of compositions: 234 [2023-09-01 11:07:50,822 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:07:50,823 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;@6a1dc27e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:07:50,823 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:07:50,912 INFO L130 PetriNetUnfolder]: 267/883 cut-off events. [2023-09-01 11:07:50,912 INFO L131 PetriNetUnfolder]: For 412/412 co-relation queries the response was YES. [2023-09-01 11:07:50,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:07:50,912 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:07:50,912 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:07:50,912 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:07:50,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1554715236, now seen corresponding path program 1 times [2023-09-01 11:07:50,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:07:50,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583948454] [2023-09-01 11:07:50,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:07:50,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:07:50,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:07:50,940 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:07:50,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:07:50,960 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:07:50,961 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:07:50,961 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:07:50,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 11:07:50,961 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:07:50,962 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:07:50,962 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:07:50,962 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 11:07:50,996 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 11:07:50,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 378 places, 454 transitions, 1106 flow [2023-09-01 11:08:00,250 INFO L130 PetriNetUnfolder]: 11473/38870 cut-off events. [2023-09-01 11:08:00,250 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 11:08:01,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50234 conditions, 38870 events. 11473/38870 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 744. Compared 440222 event pairs, 7181 based on Foata normal form. 0/34553 useless extension candidates. Maximal degree in co-relation 24516. Up to 11264 conditions per place. [2023-09-01 11:08:01,417 INFO L82 GeneralOperation]: Start removeDead. Operand has 378 places, 454 transitions, 1106 flow [2023-09-01 11:08:02,021 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 378 places, 454 transitions, 1106 flow [2023-09-01 11:08:02,022 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:08:02,022 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 378 places, 454 transitions, 1106 flow [2023-09-01 11:08:02,022 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 378 places, 454 transitions, 1106 flow [2023-09-01 11:08:02,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 378 places, 454 transitions, 1106 flow [2023-09-01 11:08:11,414 INFO L130 PetriNetUnfolder]: 11473/38870 cut-off events. [2023-09-01 11:08:11,414 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 11:08:12,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50234 conditions, 38870 events. 11473/38870 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 744. Compared 440222 event pairs, 7181 based on Foata normal form. 0/34553 useless extension candidates. Maximal degree in co-relation 24516. Up to 11264 conditions per place. [2023-09-01 11:08:14,596 INFO L119 LiptonReduction]: Number of co-enabled transitions 160270 [2023-09-01 11:08:17,342 INFO L134 LiptonReduction]: Checked pairs total: 637991 [2023-09-01 11:08:17,343 INFO L136 LiptonReduction]: Total number of compositions: 253 [2023-09-01 11:08:17,344 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:08:17,344 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;@6a1dc27e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:08:17,344 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:08:17,524 INFO L130 PetriNetUnfolder]: 363/1146 cut-off events. [2023-09-01 11:08:17,525 INFO L131 PetriNetUnfolder]: For 619/619 co-relation queries the response was YES. [2023-09-01 11:08:17,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:08:17,525 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:08:17,525 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:08:17,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:08:17,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1490923832, now seen corresponding path program 1 times [2023-09-01 11:08:17,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:08:17,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874422781] [2023-09-01 11:08:17,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:08:17,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:08:17,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:08:17,556 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:08:17,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:08:17,577 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:08:17,577 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:08:17,577 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:08:17,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 11:08:17,577 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:08:17,578 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:08:17,578 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:08:17,578 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 11:08:17,635 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 11:08:17,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 405 places, 487 transitions, 1202 flow [2023-09-01 11:08:38,711 INFO L130 PetriNetUnfolder]: 24803/78889 cut-off events. [2023-09-01 11:08:38,712 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 11:08:42,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103580 conditions, 78889 events. 24803/78889 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1398. Compared 985927 event pairs, 16398 based on Foata normal form. 0/70457 useless extension candidates. Maximal degree in co-relation 50213. Up to 24576 conditions per place. [2023-09-01 11:08:42,876 INFO L82 GeneralOperation]: Start removeDead. Operand has 405 places, 487 transitions, 1202 flow [2023-09-01 11:08:44,585 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 405 places, 487 transitions, 1202 flow [2023-09-01 11:08:44,585 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:08:44,585 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 405 places, 487 transitions, 1202 flow [2023-09-01 11:08:44,586 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 405 places, 487 transitions, 1202 flow [2023-09-01 11:08:44,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 405 places, 487 transitions, 1202 flow [2023-09-01 11:09:07,576 INFO L130 PetriNetUnfolder]: 24803/78889 cut-off events. [2023-09-01 11:09:07,577 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 11:09:12,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103580 conditions, 78889 events. 24803/78889 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1398. Compared 985927 event pairs, 16398 based on Foata normal form. 0/70457 useless extension candidates. Maximal degree in co-relation 50213. Up to 24576 conditions per place. [2023-09-01 11:09:19,426 INFO L119 LiptonReduction]: Number of co-enabled transitions 187488 [2023-09-01 11:09:22,444 INFO L134 LiptonReduction]: Checked pairs total: 737192 [2023-09-01 11:09:22,444 INFO L136 LiptonReduction]: Total number of compositions: 267 [2023-09-01 11:09:22,445 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:09:22,446 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;@6a1dc27e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:09:22,446 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:09:22,596 INFO L130 PetriNetUnfolder]: 531/1562 cut-off events. [2023-09-01 11:09:22,596 INFO L131 PetriNetUnfolder]: For 927/927 co-relation queries the response was YES. [2023-09-01 11:09:22,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:09:22,596 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:09:22,596 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:09:22,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:09:22,597 INFO L85 PathProgramCache]: Analyzing trace with hash 147628838, now seen corresponding path program 1 times [2023-09-01 11:09:22,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:09:22,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269328125] [2023-09-01 11:09:22,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:09:22,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:09:22,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:09:22,643 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:09:22,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:09:22,669 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:09:22,670 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:09:22,670 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:09:22,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 11:09:22,670 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:09:22,671 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:09:22,671 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:09:22,671 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 11:09:22,704 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 11:09:22,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 432 places, 520 transitions, 1300 flow [2023-09-01 11:10:10,539 INFO L130 PetriNetUnfolder]: 53493/160892 cut-off events. [2023-09-01 11:10:10,539 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 11:10:20,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214271 conditions, 160892 events. 53493/160892 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2784. Compared 2179284 event pairs, 36879 based on Foata normal form. 0/144249 useless extension candidates. Maximal degree in co-relation 103559. Up to 53248 conditions per place. [2023-09-01 11:10:20,832 INFO L82 GeneralOperation]: Start removeDead. Operand has 432 places, 520 transitions, 1300 flow [2023-09-01 11:10:26,658 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 432 places, 520 transitions, 1300 flow [2023-09-01 11:10:26,659 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:10:26,659 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 432 places, 520 transitions, 1300 flow [2023-09-01 11:10:26,659 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 432 places, 520 transitions, 1300 flow [2023-09-01 11:10:26,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 432 places, 520 transitions, 1300 flow [2023-09-01 11:11:23,423 INFO L130 PetriNetUnfolder]: 53493/160892 cut-off events. [2023-09-01 11:11:23,424 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 11:11:33,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214271 conditions, 160892 events. 53493/160892 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2784. Compared 2179284 event pairs, 36879 based on Foata normal form. 0/144249 useless extension candidates. Maximal degree in co-relation 103559. Up to 53248 conditions per place. [2023-09-01 11:11:52,182 INFO L119 LiptonReduction]: Number of co-enabled transitions 216814 [2023-09-01 11:11:55,564 INFO L134 LiptonReduction]: Checked pairs total: 752280 [2023-09-01 11:11:55,565 INFO L136 LiptonReduction]: Total number of compositions: 285 [2023-09-01 11:11:55,566 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:11:55,570 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;@6a1dc27e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:11:55,571 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:11:55,846 INFO L130 PetriNetUnfolder]: 798/2183 cut-off events. [2023-09-01 11:11:55,847 INFO L131 PetriNetUnfolder]: For 1387/1387 co-relation queries the response was YES. [2023-09-01 11:11:55,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:11:55,847 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:11:55,847 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:11:55,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:11:55,847 INFO L85 PathProgramCache]: Analyzing trace with hash -2001479185, now seen corresponding path program 1 times [2023-09-01 11:11:55,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:11:55,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080036763] [2023-09-01 11:11:55,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:11:55,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:11:55,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:11:55,879 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:11:55,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:11:55,908 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:11:55,909 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:11:55,909 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:11:55,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 11:11:55,909 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:11:55,910 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:11:55,910 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:11:55,910 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-09-01 11:11:55,950 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-09-01 11:11:55,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 459 places, 553 transitions, 1400 flow