./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_08-cond_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_08-cond_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 10:49:55,974 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 10:49:55,978 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 10:49:56,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 10:49:56,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 10:49:56,015 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 10:49:56,017 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 10:49:56,020 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 10:49:56,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 10:49:56,027 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 10:49:56,028 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 10:49:56,030 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 10:49:56,031 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 10:49:56,033 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 10:49:56,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 10:49:56,039 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 10:49:56,040 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 10:49:56,041 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 10:49:56,043 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 10:49:56,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 10:49:56,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 10:49:56,049 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 10:49:56,050 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 10:49:56,051 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 10:49:56,057 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 10:49:56,058 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 10:49:56,058 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 10:49:56,060 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 10:49:56,060 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 10:49:56,061 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 10:49:56,062 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 10:49:56,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 10:49:56,065 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 10:49:56,065 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 10:49:56,066 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 10:49:56,066 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 10:49:56,067 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 10:49:56,067 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 10:49:56,067 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 10:49:56,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 10:49:56,068 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 10:49:56,070 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 10:49:56,107 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 10:49:56,107 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 10:49:56,108 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 10:49:56,109 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 10:49:56,109 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 10:49:56,110 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 10:49:56,110 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 10:49:56,110 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 10:49:56,110 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 10:49:56,111 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 10:49:56,111 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 10:49:56,112 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 10:49:56,112 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 10:49:56,112 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 10:49:56,112 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 10:49:56,112 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 10:49:56,112 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 10:49:56,113 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 10:49:56,113 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 10:49:56,113 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 10:49:56,113 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 10:49:56,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 10:49:56,114 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 10:49:56,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 10:49:56,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 10:49:56,114 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 10:49:56,114 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 10:49:56,114 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 10:49:56,115 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 10:49:56,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 10:49:56,115 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 10:49:56,115 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 10:49:56,115 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 10:49:56,116 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 10:49:56,116 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 10:49:56,116 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 10:49:56,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 10:49:56,444 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 10:49:56,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 10:49:56,447 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 10:49:56,448 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 10:49:56,449 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_08-cond_racefree.i [2023-09-01 10:49:57,530 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 10:49:57,787 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 10:49:57,791 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_08-cond_racefree.i [2023-09-01 10:49:57,811 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de92d3cce/c9a332d201d54110a8bbccb47ba93fd7/FLAGdeae99a36 [2023-09-01 10:49:57,833 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de92d3cce/c9a332d201d54110a8bbccb47ba93fd7 [2023-09-01 10:49:57,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 10:49:57,836 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 10:49:57,838 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 10:49:57,838 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 10:49:57,841 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 10:49:57,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 10:49:57" (1/1) ... [2023-09-01 10:49:57,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f08b99e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:49:57, skipping insertion in model container [2023-09-01 10:49:57,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 10:49:57" (1/1) ... [2023-09-01 10:49:57,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 10:49:57,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 10:49:58,261 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_08-cond_racefree.i[41322,41335] [2023-09-01 10:49:58,278 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 10:49:58,290 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 10:49:58,340 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_08-cond_racefree.i[41322,41335] [2023-09-01 10:49:58,346 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 10:49:58,391 INFO L208 MainTranslator]: Completed translation [2023-09-01 10:49:58,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:49:58 WrapperNode [2023-09-01 10:49:58,392 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 10:49:58,392 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 10:49:58,392 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 10:49:58,393 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 10:49:58,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:49:58" (1/1) ... [2023-09-01 10:49:58,411 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:49:58" (1/1) ... [2023-09-01 10:49:58,430 INFO L138 Inliner]: procedures = 270, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 90 [2023-09-01 10:49:58,430 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 10:49:58,431 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 10:49:58,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 10:49:58,431 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 10:49:58,437 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:49:58" (1/1) ... [2023-09-01 10:49:58,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:49:58" (1/1) ... [2023-09-01 10:49:58,441 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:49:58" (1/1) ... [2023-09-01 10:49:58,441 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:49:58" (1/1) ... [2023-09-01 10:49:58,447 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:49:58" (1/1) ... [2023-09-01 10:49:58,450 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:49:58" (1/1) ... [2023-09-01 10:49:58,452 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:49:58" (1/1) ... [2023-09-01 10:49:58,453 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:49:58" (1/1) ... [2023-09-01 10:49:58,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 10:49:58,456 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 10:49:58,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 10:49:58,456 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 10:49:58,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:49:58" (1/1) ... [2023-09-01 10:49:58,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 10:49:58,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 10:49:58,485 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 10:49:58,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 10:49:58,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 10:49:58,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 10:49:58,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 10:49:58,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 10:49:58,515 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 10:49:58,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 10:49:58,515 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 10:49:58,515 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 10:49:58,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 10:49:58,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 10:49:58,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 10:49:58,517 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 10:49:58,638 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 10:49:58,639 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 10:49:58,894 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 10:49:58,900 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 10:49:58,900 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-09-01 10:49:58,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 10:49:58 BoogieIcfgContainer [2023-09-01 10:49:58,902 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 10:49:58,904 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 10:49:58,905 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 10:49:58,907 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 10:49:58,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 10:49:57" (1/3) ... [2023-09-01 10:49:58,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4345bbeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 10:49:58, skipping insertion in model container [2023-09-01 10:49:58,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:49:58" (2/3) ... [2023-09-01 10:49:58,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4345bbeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 10:49:58, skipping insertion in model container [2023-09-01 10:49:58,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 10:49:58" (3/3) ... [2023-09-01 10:49:58,910 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_08-cond_racefree.i [2023-09-01 10:49:58,917 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 10:49:58,925 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 10:49:58,925 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 10:49:58,925 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 10:49:58,972 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 10:49:59,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 121 transitions, 250 flow [2023-09-01 10:49:59,105 INFO L130 PetriNetUnfolder]: 23/163 cut-off events. [2023-09-01 10:49:59,105 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 10:49:59,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 163 events. 23/163 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 360 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 81. Up to 6 conditions per place. [2023-09-01 10:49:59,112 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 121 transitions, 250 flow [2023-09-01 10:49:59,117 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 116 transitions, 237 flow [2023-09-01 10:49:59,121 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:49:59,133 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 116 transitions, 237 flow [2023-09-01 10:49:59,139 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 116 transitions, 237 flow [2023-09-01 10:49:59,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 116 transitions, 237 flow [2023-09-01 10:49:59,186 INFO L130 PetriNetUnfolder]: 22/158 cut-off events. [2023-09-01 10:49:59,187 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 10:49:59,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 158 events. 22/158 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 349 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 81. Up to 6 conditions per place. [2023-09-01 10:49:59,192 INFO L119 LiptonReduction]: Number of co-enabled transitions 2688 [2023-09-01 10:50:02,197 INFO L134 LiptonReduction]: Checked pairs total: 4289 [2023-09-01 10:50:02,200 INFO L136 LiptonReduction]: Total number of compositions: 103 [2023-09-01 10:50:02,211 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:50:02,215 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;@2c166ed8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:50:02,216 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:50:02,225 INFO L130 PetriNetUnfolder]: 4/25 cut-off events. [2023-09-01 10:50:02,226 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 10:50:02,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:50:02,227 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 10:50:02,227 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:50:02,231 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:50:02,231 INFO L85 PathProgramCache]: Analyzing trace with hash 950607665, now seen corresponding path program 1 times [2023-09-01 10:50:02,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:50:02,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94868920] [2023-09-01 10:50:02,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:50:02,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:50:02,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:02,380 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:50:02,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:02,438 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:50:02,440 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:50:02,441 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:50:02,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 10:50:02,442 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:50:02,445 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:50:02,445 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:50:02,446 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 10:50:02,462 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 10:50:02,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 151 transitions, 320 flow [2023-09-01 10:50:02,526 INFO L130 PetriNetUnfolder]: 40/259 cut-off events. [2023-09-01 10:50:02,526 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 10:50:02,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 259 events. 40/259 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 723 event pairs, 0 based on Foata normal form. 0/212 useless extension candidates. Maximal degree in co-relation 165. Up to 9 conditions per place. [2023-09-01 10:50:02,529 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 151 transitions, 320 flow [2023-09-01 10:50:02,530 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 151 transitions, 320 flow [2023-09-01 10:50:02,531 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:50:02,531 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 134 places, 151 transitions, 320 flow [2023-09-01 10:50:02,531 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 134 places, 151 transitions, 320 flow [2023-09-01 10:50:02,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 151 transitions, 320 flow [2023-09-01 10:50:02,561 INFO L130 PetriNetUnfolder]: 40/259 cut-off events. [2023-09-01 10:50:02,561 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 10:50:02,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 259 events. 40/259 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 723 event pairs, 0 based on Foata normal form. 0/212 useless extension candidates. Maximal degree in co-relation 165. Up to 9 conditions per place. [2023-09-01 10:50:02,567 INFO L119 LiptonReduction]: Number of co-enabled transitions 7560 [2023-09-01 10:50:05,355 INFO L134 LiptonReduction]: Checked pairs total: 19419 [2023-09-01 10:50:05,356 INFO L136 LiptonReduction]: Total number of compositions: 114 [2023-09-01 10:50:05,358 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:50:05,359 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;@2c166ed8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:50:05,359 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:50:05,365 INFO L130 PetriNetUnfolder]: 15/64 cut-off events. [2023-09-01 10:50:05,365 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 10:50:05,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:50:05,366 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 10:50:05,366 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:50:05,366 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:50:05,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1552769436, now seen corresponding path program 1 times [2023-09-01 10:50:05,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:50:05,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733081742] [2023-09-01 10:50:05,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:50:05,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:50:05,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:05,397 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:50:05,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:05,445 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:50:05,448 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:50:05,449 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:50:05,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 10:50:05,449 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:50:05,450 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:50:05,451 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:50:05,452 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 10:50:05,470 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 10:50:05,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 181 transitions, 392 flow [2023-09-01 10:50:05,522 INFO L130 PetriNetUnfolder]: 62/386 cut-off events. [2023-09-01 10:50:05,522 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 10:50:05,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414 conditions, 386 events. 62/386 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1219 event pairs, 1 based on Foata normal form. 0/316 useless extension candidates. Maximal degree in co-relation 267. Up to 16 conditions per place. [2023-09-01 10:50:05,526 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 181 transitions, 392 flow [2023-09-01 10:50:05,529 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 181 transitions, 392 flow [2023-09-01 10:50:05,534 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:50:05,534 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 159 places, 181 transitions, 392 flow [2023-09-01 10:50:05,534 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 159 places, 181 transitions, 392 flow [2023-09-01 10:50:05,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 181 transitions, 392 flow [2023-09-01 10:50:05,579 INFO L130 PetriNetUnfolder]: 62/386 cut-off events. [2023-09-01 10:50:05,579 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 10:50:05,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414 conditions, 386 events. 62/386 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1219 event pairs, 1 based on Foata normal form. 0/316 useless extension candidates. Maximal degree in co-relation 267. Up to 16 conditions per place. [2023-09-01 10:50:05,592 INFO L119 LiptonReduction]: Number of co-enabled transitions 13944 [2023-09-01 10:50:08,337 INFO L134 LiptonReduction]: Checked pairs total: 34795 [2023-09-01 10:50:08,338 INFO L136 LiptonReduction]: Total number of compositions: 129 [2023-09-01 10:50:08,339 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:50:08,340 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;@2c166ed8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:50:08,341 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:50:08,348 INFO L130 PetriNetUnfolder]: 26/103 cut-off events. [2023-09-01 10:50:08,349 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 10:50:08,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:50:08,349 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 10:50:08,349 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:50:08,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:50:08,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1306786674, now seen corresponding path program 1 times [2023-09-01 10:50:08,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:50:08,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080208544] [2023-09-01 10:50:08,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:50:08,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:50:08,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:08,377 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:50:08,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:08,394 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:50:08,394 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:50:08,394 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:50:08,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 10:50:08,395 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:50:08,395 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:50:08,395 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:50:08,396 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 10:50:08,422 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 10:50:08,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 211 transitions, 466 flow [2023-09-01 10:50:08,508 INFO L130 PetriNetUnfolder]: 96/577 cut-off events. [2023-09-01 10:50:08,508 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 10:50:08,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 632 conditions, 577 events. 96/577 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2109 event pairs, 6 based on Foata normal form. 0/476 useless extension candidates. Maximal degree in co-relation 406. Up to 32 conditions per place. [2023-09-01 10:50:08,514 INFO L82 GeneralOperation]: Start removeDead. Operand has 184 places, 211 transitions, 466 flow [2023-09-01 10:50:08,518 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 184 places, 211 transitions, 466 flow [2023-09-01 10:50:08,518 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:50:08,519 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 184 places, 211 transitions, 466 flow [2023-09-01 10:50:08,519 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 184 places, 211 transitions, 466 flow [2023-09-01 10:50:08,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 211 transitions, 466 flow [2023-09-01 10:50:08,590 INFO L130 PetriNetUnfolder]: 96/577 cut-off events. [2023-09-01 10:50:08,590 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 10:50:08,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 632 conditions, 577 events. 96/577 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2109 event pairs, 6 based on Foata normal form. 0/476 useless extension candidates. Maximal degree in co-relation 406. Up to 32 conditions per place. [2023-09-01 10:50:08,609 INFO L119 LiptonReduction]: Number of co-enabled transitions 22064 [2023-09-01 10:50:11,458 INFO L134 LiptonReduction]: Checked pairs total: 57997 [2023-09-01 10:50:11,458 INFO L136 LiptonReduction]: Total number of compositions: 147 [2023-09-01 10:50:11,460 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:50:11,461 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;@2c166ed8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:50:11,461 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:50:11,471 INFO L130 PetriNetUnfolder]: 34/140 cut-off events. [2023-09-01 10:50:11,471 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-09-01 10:50:11,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:50:11,471 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 10:50:11,472 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:50:11,472 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:50:11,472 INFO L85 PathProgramCache]: Analyzing trace with hash 988704650, now seen corresponding path program 1 times [2023-09-01 10:50:11,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:50:11,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894308261] [2023-09-01 10:50:11,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:50:11,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:50:11,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:11,493 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:50:11,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:11,512 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:50:11,512 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:50:11,512 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:50:11,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 10:50:11,512 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:50:11,513 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:50:11,513 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:50:11,513 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 10:50:11,536 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 10:50:11,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 241 transitions, 542 flow [2023-09-01 10:50:11,653 INFO L130 PetriNetUnfolder]: 158/900 cut-off events. [2023-09-01 10:50:11,654 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 10:50:11,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1011 conditions, 900 events. 158/900 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3855 event pairs, 23 based on Foata normal form. 0/752 useless extension candidates. Maximal degree in co-relation 622. Up to 80 conditions per place. [2023-09-01 10:50:11,666 INFO L82 GeneralOperation]: Start removeDead. Operand has 209 places, 241 transitions, 542 flow [2023-09-01 10:50:11,675 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 241 transitions, 542 flow [2023-09-01 10:50:11,675 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:50:11,675 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 209 places, 241 transitions, 542 flow [2023-09-01 10:50:11,675 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 209 places, 241 transitions, 542 flow [2023-09-01 10:50:11,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 241 transitions, 542 flow [2023-09-01 10:50:11,787 INFO L130 PetriNetUnfolder]: 158/900 cut-off events. [2023-09-01 10:50:11,788 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 10:50:11,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1011 conditions, 900 events. 158/900 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3855 event pairs, 23 based on Foata normal form. 0/752 useless extension candidates. Maximal degree in co-relation 622. Up to 80 conditions per place. [2023-09-01 10:50:11,823 INFO L119 LiptonReduction]: Number of co-enabled transitions 31920 [2023-09-01 10:50:14,750 INFO L134 LiptonReduction]: Checked pairs total: 89022 [2023-09-01 10:50:14,751 INFO L136 LiptonReduction]: Total number of compositions: 162 [2023-09-01 10:50:14,752 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:50:14,753 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2c166ed8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:50:14,754 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:50:14,768 INFO L130 PetriNetUnfolder]: 47/190 cut-off events. [2023-09-01 10:50:14,768 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-09-01 10:50:14,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:50:14,769 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:50:14,769 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:50:14,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:50:14,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1875578010, now seen corresponding path program 1 times [2023-09-01 10:50:14,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:50:14,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888123455] [2023-09-01 10:50:14,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:50:14,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:50:14,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:14,801 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:50:14,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:14,819 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:50:14,819 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:50:14,820 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:50:14,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 10:50:14,820 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:50:14,821 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:50:14,821 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:50:14,821 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 10:50:14,844 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 10:50:14,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 234 places, 271 transitions, 620 flow [2023-09-01 10:50:15,073 INFO L130 PetriNetUnfolder]: 284/1495 cut-off events. [2023-09-01 10:50:15,074 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 10:50:15,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1727 conditions, 1495 events. 284/1495 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7884 event pairs, 72 based on Foata normal form. 0/1268 useless extension candidates. Maximal degree in co-relation 999. Up to 192 conditions per place. [2023-09-01 10:50:15,092 INFO L82 GeneralOperation]: Start removeDead. Operand has 234 places, 271 transitions, 620 flow [2023-09-01 10:50:15,107 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 234 places, 271 transitions, 620 flow [2023-09-01 10:50:15,107 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:50:15,108 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 234 places, 271 transitions, 620 flow [2023-09-01 10:50:15,108 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 234 places, 271 transitions, 620 flow [2023-09-01 10:50:15,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 234 places, 271 transitions, 620 flow [2023-09-01 10:50:15,338 INFO L130 PetriNetUnfolder]: 284/1495 cut-off events. [2023-09-01 10:50:15,338 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 10:50:15,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1727 conditions, 1495 events. 284/1495 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7884 event pairs, 72 based on Foata normal form. 0/1268 useless extension candidates. Maximal degree in co-relation 999. Up to 192 conditions per place. [2023-09-01 10:50:15,411 INFO L119 LiptonReduction]: Number of co-enabled transitions 43512 [2023-09-01 10:50:18,275 INFO L134 LiptonReduction]: Checked pairs total: 124911 [2023-09-01 10:50:18,275 INFO L136 LiptonReduction]: Total number of compositions: 176 [2023-09-01 10:50:18,277 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:50:18,277 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;@2c166ed8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:50:18,278 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:50:18,306 INFO L130 PetriNetUnfolder]: 69/263 cut-off events. [2023-09-01 10:50:18,306 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-09-01 10:50:18,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:50:18,306 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:50:18,307 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:50:18,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:50:18,308 INFO L85 PathProgramCache]: Analyzing trace with hash -884379108, now seen corresponding path program 1 times [2023-09-01 10:50:18,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:50:18,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176422701] [2023-09-01 10:50:18,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:50:18,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:50:18,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:18,360 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:50:18,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:18,394 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:50:18,395 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:50:18,400 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:50:18,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 10:50:18,400 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:50:18,401 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:50:18,403 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:50:18,403 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 10:50:18,437 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 10:50:18,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 259 places, 301 transitions, 700 flow [2023-09-01 10:50:18,896 INFO L130 PetriNetUnfolder]: 554/2650 cut-off events. [2023-09-01 10:50:18,896 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 10:50:18,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3148 conditions, 2650 events. 554/2650 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 17034 event pairs, 201 based on Foata normal form. 0/2280 useless extension candidates. Maximal degree in co-relation 1713. Up to 448 conditions per place. [2023-09-01 10:50:18,942 INFO L82 GeneralOperation]: Start removeDead. Operand has 259 places, 301 transitions, 700 flow [2023-09-01 10:50:18,987 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 259 places, 301 transitions, 700 flow [2023-09-01 10:50:18,988 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:50:18,988 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 259 places, 301 transitions, 700 flow [2023-09-01 10:50:18,988 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 259 places, 301 transitions, 700 flow [2023-09-01 10:50:18,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 259 places, 301 transitions, 700 flow [2023-09-01 10:50:19,469 INFO L130 PetriNetUnfolder]: 554/2650 cut-off events. [2023-09-01 10:50:19,469 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 10:50:19,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3148 conditions, 2650 events. 554/2650 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 17034 event pairs, 201 based on Foata normal form. 0/2280 useless extension candidates. Maximal degree in co-relation 1713. Up to 448 conditions per place. [2023-09-01 10:50:19,592 INFO L119 LiptonReduction]: Number of co-enabled transitions 56840 [2023-09-01 10:50:22,760 INFO L134 LiptonReduction]: Checked pairs total: 185972 [2023-09-01 10:50:22,760 INFO L136 LiptonReduction]: Total number of compositions: 192 [2023-09-01 10:50:22,761 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:50:22,762 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;@2c166ed8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:50:22,762 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:50:22,790 INFO L130 PetriNetUnfolder]: 84/330 cut-off events. [2023-09-01 10:50:22,790 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-09-01 10:50:22,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:50:22,790 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:50:22,791 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:50:22,791 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:50:22,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1081819086, now seen corresponding path program 1 times [2023-09-01 10:50:22,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:50:22,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135293739] [2023-09-01 10:50:22,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:50:22,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:50:22,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:22,812 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:50:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:22,829 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:50:22,829 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:50:22,829 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:50:22,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 10:50:22,830 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:50:22,830 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:50:22,830 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:50:22,830 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 10:50:22,854 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 10:50:22,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 284 places, 331 transitions, 782 flow [2023-09-01 10:50:23,863 INFO L130 PetriNetUnfolder]: 1144/4957 cut-off events. [2023-09-01 10:50:23,864 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 10:50:23,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6042 conditions, 4957 events. 1144/4957 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 38099 event pairs, 522 based on Foata normal form. 0/4316 useless extension candidates. Maximal degree in co-relation 3132. Up to 1024 conditions per place. [2023-09-01 10:50:23,947 INFO L82 GeneralOperation]: Start removeDead. Operand has 284 places, 331 transitions, 782 flow [2023-09-01 10:50:23,994 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 284 places, 331 transitions, 782 flow [2023-09-01 10:50:23,995 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:50:23,995 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 284 places, 331 transitions, 782 flow [2023-09-01 10:50:23,995 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 284 places, 331 transitions, 782 flow [2023-09-01 10:50:23,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 284 places, 331 transitions, 782 flow [2023-09-01 10:50:25,029 INFO L130 PetriNetUnfolder]: 1144/4957 cut-off events. [2023-09-01 10:50:25,029 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 10:50:25,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6042 conditions, 4957 events. 1144/4957 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 38099 event pairs, 522 based on Foata normal form. 0/4316 useless extension candidates. Maximal degree in co-relation 3132. Up to 1024 conditions per place. [2023-09-01 10:50:25,202 INFO L119 LiptonReduction]: Number of co-enabled transitions 71904 [2023-09-01 10:50:28,476 INFO L134 LiptonReduction]: Checked pairs total: 239779 [2023-09-01 10:50:28,476 INFO L136 LiptonReduction]: Total number of compositions: 204 [2023-09-01 10:50:28,477 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:50:28,478 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;@2c166ed8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:50:28,478 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:50:28,520 INFO L130 PetriNetUnfolder]: 122/453 cut-off events. [2023-09-01 10:50:28,520 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-09-01 10:50:28,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:50:28,521 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:50:28,521 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:50:28,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:50:28,522 INFO L85 PathProgramCache]: Analyzing trace with hash 55504050, now seen corresponding path program 1 times [2023-09-01 10:50:28,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:50:28,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638251445] [2023-09-01 10:50:28,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:50:28,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:50:28,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:28,541 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:50:28,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:28,560 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:50:28,561 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:50:28,561 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:50:28,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 10:50:28,561 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:50:28,562 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:50:28,562 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:50:28,562 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 10:50:28,596 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 10:50:28,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 309 places, 361 transitions, 866 flow [2023-09-01 10:50:30,311 INFO L130 PetriNetUnfolder]: 2438/9632 cut-off events. [2023-09-01 10:50:30,311 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 10:50:30,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12009 conditions, 9632 events. 2438/9632 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 86277 event pairs, 1291 based on Foata normal form. 0/8464 useless extension candidates. Maximal degree in co-relation 6024. Up to 2304 conditions per place. [2023-09-01 10:50:30,460 INFO L82 GeneralOperation]: Start removeDead. Operand has 309 places, 361 transitions, 866 flow [2023-09-01 10:50:30,538 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 309 places, 361 transitions, 866 flow [2023-09-01 10:50:30,538 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:50:30,538 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 309 places, 361 transitions, 866 flow [2023-09-01 10:50:30,538 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 309 places, 361 transitions, 866 flow [2023-09-01 10:50:30,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 309 places, 361 transitions, 866 flow [2023-09-01 10:50:32,333 INFO L130 PetriNetUnfolder]: 2438/9632 cut-off events. [2023-09-01 10:50:32,333 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 10:50:32,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12009 conditions, 9632 events. 2438/9632 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 86277 event pairs, 1291 based on Foata normal form. 0/8464 useless extension candidates. Maximal degree in co-relation 6024. Up to 2304 conditions per place. [2023-09-01 10:50:32,832 INFO L119 LiptonReduction]: Number of co-enabled transitions 88704 [2023-09-01 10:50:36,116 INFO L134 LiptonReduction]: Checked pairs total: 269516 [2023-09-01 10:50:36,116 INFO L136 LiptonReduction]: Total number of compositions: 219 [2023-09-01 10:50:36,117 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:50:36,118 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;@2c166ed8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:50:36,118 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:50:36,166 INFO L130 PetriNetUnfolder]: 169/608 cut-off events. [2023-09-01 10:50:36,167 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-09-01 10:50:36,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:50:36,167 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:50:36,167 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:50:36,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:50:36,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1490583923, now seen corresponding path program 1 times [2023-09-01 10:50:36,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:50:36,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904144348] [2023-09-01 10:50:36,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:50:36,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:50:36,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:36,186 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:50:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:36,203 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:50:36,203 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:50:36,203 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:50:36,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 10:50:36,204 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:50:36,204 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:50:36,205 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:50:36,205 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 10:50:36,230 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 10:50:36,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 334 places, 391 transitions, 952 flow [2023-09-01 10:50:40,095 INFO L130 PetriNetUnfolder]: 5268/19171 cut-off events. [2023-09-01 10:50:40,096 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 10:50:40,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24377 conditions, 19171 events. 5268/19171 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 195302 event pairs, 3084 based on Foata normal form. 0/16964 useless extension candidates. Maximal degree in co-relation 11989. Up to 5120 conditions per place. [2023-09-01 10:50:40,387 INFO L82 GeneralOperation]: Start removeDead. Operand has 334 places, 391 transitions, 952 flow [2023-09-01 10:50:40,646 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 334 places, 391 transitions, 952 flow [2023-09-01 10:50:40,647 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:50:40,647 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 334 places, 391 transitions, 952 flow [2023-09-01 10:50:40,647 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 334 places, 391 transitions, 952 flow [2023-09-01 10:50:40,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 334 places, 391 transitions, 952 flow [2023-09-01 10:50:44,298 INFO L130 PetriNetUnfolder]: 5268/19171 cut-off events. [2023-09-01 10:50:44,299 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 10:50:44,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24377 conditions, 19171 events. 5268/19171 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 195302 event pairs, 3084 based on Foata normal form. 0/16964 useless extension candidates. Maximal degree in co-relation 11989. Up to 5120 conditions per place. [2023-09-01 10:50:45,442 INFO L119 LiptonReduction]: Number of co-enabled transitions 107240 [2023-09-01 10:50:49,020 INFO L134 LiptonReduction]: Checked pairs total: 364074 [2023-09-01 10:50:49,021 INFO L136 LiptonReduction]: Total number of compositions: 236 [2023-09-01 10:50:49,022 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:50:49,022 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;@2c166ed8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:50:49,022 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:50:49,087 INFO L130 PetriNetUnfolder]: 245/838 cut-off events. [2023-09-01 10:50:49,087 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-09-01 10:50:49,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:50:49,087 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:50:49,087 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:50:49,088 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:50:49,088 INFO L85 PathProgramCache]: Analyzing trace with hash 307147780, now seen corresponding path program 1 times [2023-09-01 10:50:49,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:50:49,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563405270] [2023-09-01 10:50:49,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:50:49,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:50:49,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:49,124 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:50:49,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:49,143 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:50:49,144 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:50:49,144 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:50:49,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 10:50:49,144 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:50:49,145 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:50:49,145 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:50:49,145 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 10:50:49,182 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 10:50:49,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 359 places, 421 transitions, 1040 flow [2023-09-01 10:50:57,771 INFO L130 PetriNetUnfolder]: 11426/38694 cut-off events. [2023-09-01 10:50:57,772 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 10:50:58,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50058 conditions, 38694 events. 11426/38694 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 438607 event pairs, 7181 based on Foata normal form. 0/34424 useless extension candidates. Maximal degree in co-relation 24355. Up to 11264 conditions per place. [2023-09-01 10:50:58,462 INFO L82 GeneralOperation]: Start removeDead. Operand has 359 places, 421 transitions, 1040 flow [2023-09-01 10:50:58,917 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 359 places, 421 transitions, 1040 flow [2023-09-01 10:50:58,917 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:50:58,918 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 359 places, 421 transitions, 1040 flow [2023-09-01 10:50:58,918 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 359 places, 421 transitions, 1040 flow [2023-09-01 10:50:58,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 359 places, 421 transitions, 1040 flow [2023-09-01 10:51:07,515 INFO L130 PetriNetUnfolder]: 11426/38694 cut-off events. [2023-09-01 10:51:07,515 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 10:51:08,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50058 conditions, 38694 events. 11426/38694 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 438607 event pairs, 7181 based on Foata normal form. 0/34424 useless extension candidates. Maximal degree in co-relation 24355. Up to 11264 conditions per place. [2023-09-01 10:51:09,816 INFO L119 LiptonReduction]: Number of co-enabled transitions 127512 [2023-09-01 10:51:13,306 INFO L134 LiptonReduction]: Checked pairs total: 438027 [2023-09-01 10:51:13,306 INFO L136 LiptonReduction]: Total number of compositions: 252 [2023-09-01 10:51:13,308 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:51:13,308 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;@2c166ed8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:51:13,308 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:51:13,442 INFO L130 PetriNetUnfolder]: 361/1167 cut-off events. [2023-09-01 10:51:13,442 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-09-01 10:51:13,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:51:13,442 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:51:13,442 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:51:13,443 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:51:13,443 INFO L85 PathProgramCache]: Analyzing trace with hash 2000235877, now seen corresponding path program 1 times [2023-09-01 10:51:13,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:51:13,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525079227] [2023-09-01 10:51:13,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:51:13,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:51:13,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:51:13,469 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:51:13,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:51:13,491 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:51:13,491 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:51:13,492 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:51:13,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 10:51:13,492 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:51:13,493 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:51:13,493 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:51:13,493 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 10:51:13,530 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 10:51:13,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 384 places, 451 transitions, 1130 flow [2023-09-01 10:51:32,757 INFO L130 PetriNetUnfolder]: 24752/78697 cut-off events. [2023-09-01 10:51:32,758 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 10:51:36,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103388 conditions, 78697 events. 24752/78697 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1389. Compared 978681 event pairs, 16398 based on Foata normal form. 0/70316 useless extension candidates. Maximal degree in co-relation 50034. Up to 24576 conditions per place. [2023-09-01 10:51:36,000 INFO L82 GeneralOperation]: Start removeDead. Operand has 384 places, 451 transitions, 1130 flow [2023-09-01 10:51:37,462 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 384 places, 451 transitions, 1130 flow [2023-09-01 10:51:37,463 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:51:37,463 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 384 places, 451 transitions, 1130 flow [2023-09-01 10:51:37,463 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 384 places, 451 transitions, 1130 flow [2023-09-01 10:51:37,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 384 places, 451 transitions, 1130 flow [2023-09-01 10:51:57,183 INFO L130 PetriNetUnfolder]: 24752/78697 cut-off events. [2023-09-01 10:51:57,183 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 10:52:01,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103388 conditions, 78697 events. 24752/78697 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1389. Compared 978681 event pairs, 16398 based on Foata normal form. 0/70316 useless extension candidates. Maximal degree in co-relation 50034. Up to 24576 conditions per place. [2023-09-01 10:52:05,948 INFO L119 LiptonReduction]: Number of co-enabled transitions 149520 [2023-09-01 10:52:09,284 INFO L134 LiptonReduction]: Checked pairs total: 460695 [2023-09-01 10:52:09,284 INFO L136 LiptonReduction]: Total number of compositions: 264 [2023-09-01 10:52:09,287 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:52:09,289 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;@2c166ed8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:52:09,289 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:52:09,447 INFO L130 PetriNetUnfolder]: 585/1733 cut-off events. [2023-09-01 10:52:09,447 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-09-01 10:52:09,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:52:09,448 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:52:09,448 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:52:09,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:52:09,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1886689706, now seen corresponding path program 1 times [2023-09-01 10:52:09,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:52:09,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813368504] [2023-09-01 10:52:09,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:52:09,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:52:09,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:52:09,472 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:52:09,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:52:09,493 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:52:09,494 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:52:09,494 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:52:09,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 10:52:09,494 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:52:09,495 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:52:09,495 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:52:09,495 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 10:52:09,525 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 10:52:09,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 409 places, 481 transitions, 1222 flow [2023-09-01 10:52:51,970 INFO L130 PetriNetUnfolder]: 53438/160684 cut-off events. [2023-09-01 10:52:51,971 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 10:53:00,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214063 conditions, 160684 events. 53438/160684 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2770. Compared 2164095 event pairs, 36879 based on Foata normal form. 0/144096 useless extension candidates. Maximal degree in co-relation 103362. Up to 53248 conditions per place. [2023-09-01 10:53:00,385 INFO L82 GeneralOperation]: Start removeDead. Operand has 409 places, 481 transitions, 1222 flow [2023-09-01 10:53:03,951 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 409 places, 481 transitions, 1222 flow [2023-09-01 10:53:03,951 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:53:03,952 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 409 places, 481 transitions, 1222 flow [2023-09-01 10:53:03,952 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 409 places, 481 transitions, 1222 flow [2023-09-01 10:53:03,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 409 places, 481 transitions, 1222 flow [2023-09-01 10:53:46,737 INFO L130 PetriNetUnfolder]: 53438/160684 cut-off events. [2023-09-01 10:53:46,738 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 10:53:55,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214063 conditions, 160684 events. 53438/160684 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2770. Compared 2164095 event pairs, 36879 based on Foata normal form. 0/144096 useless extension candidates. Maximal degree in co-relation 103362. Up to 53248 conditions per place. [2023-09-01 10:54:11,424 INFO L119 LiptonReduction]: Number of co-enabled transitions 173264 [2023-09-01 10:54:14,984 INFO L134 LiptonReduction]: Checked pairs total: 536928 [2023-09-01 10:54:14,984 INFO L136 LiptonReduction]: Total number of compositions: 279 [2023-09-01 10:54:14,985 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:54:14,986 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;@2c166ed8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:54:14,986 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:54:15,253 INFO L130 PetriNetUnfolder]: 940/2582 cut-off events. [2023-09-01 10:54:15,253 INFO L131 PetriNetUnfolder]: For 1672/1672 co-relation queries the response was YES. [2023-09-01 10:54:15,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:54:15,253 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:54:15,253 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:54:15,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:54:15,254 INFO L85 PathProgramCache]: Analyzing trace with hash 944736493, now seen corresponding path program 1 times [2023-09-01 10:54:15,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:54:15,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028294975] [2023-09-01 10:54:15,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:54:15,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:54:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:54:15,279 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:54:15,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:54:15,313 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:54:15,313 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:54:15,314 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:54:15,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 10:54:15,314 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:54:15,316 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:54:15,316 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:54:15,317 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-09-01 10:54:15,350 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-09-01 10:54:15,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 434 places, 511 transitions, 1316 flow