./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_28-funptr_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) 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/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_28-funptr_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5b90ecb07ae966182b79ce4444e238e18068c02297f514a326dfeeed6dbb5499 --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 00:39:19,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 00:39:19,867 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 00:39:19,909 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 00:39:19,911 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 00:39:19,915 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 00:39:19,916 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 00:39:19,919 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 00:39:19,921 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 00:39:19,926 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 00:39:19,927 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 00:39:19,930 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 00:39:19,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 00:39:19,932 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 00:39:19,933 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 00:39:19,936 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 00:39:19,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 00:39:19,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 00:39:19,941 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 00:39:19,942 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 00:39:19,946 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 00:39:19,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 00:39:19,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 00:39:19,948 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 00:39:19,951 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 00:39:19,953 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 00:39:19,953 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 00:39:19,954 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 00:39:19,955 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 00:39:19,956 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 00:39:19,956 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 00:39:19,957 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 00:39:19,958 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 00:39:19,959 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 00:39:19,960 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 00:39:19,960 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 00:39:19,961 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 00:39:19,961 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 00:39:19,961 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 00:39:19,962 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 00:39:19,963 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 00:39:19,964 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 00:39:19,995 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 00:39:19,995 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 00:39:19,996 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 00:39:19,997 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 00:39:19,997 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 00:39:19,997 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 00:39:19,998 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 00:39:19,998 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 00:39:19,998 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 00:39:19,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 00:39:19,999 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 00:39:19,999 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 00:39:20,000 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 00:39:20,000 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 00:39:20,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 00:39:20,000 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 00:39:20,000 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 00:39:20,000 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 00:39:20,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 00:39:20,001 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 00:39:20,001 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 00:39:20,001 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 00:39:20,001 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 00:39:20,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 00:39:20,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 00:39:20,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:39:20,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 00:39:20,002 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 00:39:20,002 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 00:39:20,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 00:39:20,003 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 00:39:20,003 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 00:39:20,003 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 00:39:20,003 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 00:39:20,004 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b90ecb07ae966182b79ce4444e238e18068c02297f514a326dfeeed6dbb5499 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 00:39:20,290 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 00:39:20,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 00:39:20,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 00:39:20,316 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 00:39:20,316 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 00:39:20,318 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_28-funptr_racefree.i [2023-09-01 00:39:21,420 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 00:39:21,675 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 00:39:21,676 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_28-funptr_racefree.i [2023-09-01 00:39:21,706 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a047d060/735bcfc7ed544f639fdf2bfc1f6a1aa7/FLAGc427feb07 [2023-09-01 00:39:21,725 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a047d060/735bcfc7ed544f639fdf2bfc1f6a1aa7 [2023-09-01 00:39:21,727 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 00:39:21,728 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 00:39:21,729 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 00:39:21,729 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 00:39:21,732 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 00:39:21,733 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:39:21" (1/1) ... [2023-09-01 00:39:21,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3809577d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:39:21, skipping insertion in model container [2023-09-01 00:39:21,734 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:39:21" (1/1) ... [2023-09-01 00:39:21,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 00:39:21,779 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 00:39:22,222 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_28-funptr_racefree.i[41323,41336] [2023-09-01 00:39:22,244 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:39:22,262 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 00:39:22,299 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_28-funptr_racefree.i[41323,41336] [2023-09-01 00:39:22,319 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:39:22,381 WARN L667 CHandler]: The function g is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 00:39:22,387 INFO L208 MainTranslator]: Completed translation [2023-09-01 00:39:22,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:39:22 WrapperNode [2023-09-01 00:39:22,387 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 00:39:22,389 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 00:39:22,389 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 00:39:22,389 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 00:39:22,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:39:22" (1/1) ... [2023-09-01 00:39:22,424 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:39:22" (1/1) ... [2023-09-01 00:39:22,454 INFO L138 Inliner]: procedures = 273, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 122 [2023-09-01 00:39:22,455 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 00:39:22,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 00:39:22,455 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 00:39:22,456 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 00:39:22,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:39:22" (1/1) ... [2023-09-01 00:39:22,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:39:22" (1/1) ... [2023-09-01 00:39:22,480 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:39:22" (1/1) ... [2023-09-01 00:39:22,481 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:39:22" (1/1) ... [2023-09-01 00:39:22,485 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:39:22" (1/1) ... [2023-09-01 00:39:22,495 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:39:22" (1/1) ... [2023-09-01 00:39:22,499 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:39:22" (1/1) ... [2023-09-01 00:39:22,506 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:39:22" (1/1) ... [2023-09-01 00:39:22,509 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 00:39:22,509 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 00:39:22,509 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 00:39:22,510 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 00:39:22,510 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:39:22" (1/1) ... [2023-09-01 00:39:22,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:39:22,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 00:39:22,546 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 00:39:22,572 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 00:39:22,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 00:39:22,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 00:39:22,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 00:39:22,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 00:39:22,587 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 00:39:22,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 00:39:22,587 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 00:39:22,587 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 00:39:22,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 00:39:22,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 00:39:22,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 00:39:22,589 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 00:39:22,737 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 00:39:22,739 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 00:39:22,978 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 00:39:22,987 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 00:39:22,989 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-09-01 00:39:22,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:39:22 BoogieIcfgContainer [2023-09-01 00:39:22,991 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 00:39:22,993 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 00:39:22,993 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 00:39:22,996 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 00:39:22,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 12:39:21" (1/3) ... [2023-09-01 00:39:22,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67974b3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:39:22, skipping insertion in model container [2023-09-01 00:39:22,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:39:22" (2/3) ... [2023-09-01 00:39:22,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67974b3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:39:22, skipping insertion in model container [2023-09-01 00:39:22,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:39:22" (3/3) ... [2023-09-01 00:39:22,998 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_28-funptr_racefree.i [2023-09-01 00:39:23,012 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 00:39:23,013 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-09-01 00:39:23,013 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 00:39:23,094 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 00:39:23,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 127 transitions, 262 flow [2023-09-01 00:39:23,220 INFO L130 PetriNetUnfolder]: 17/171 cut-off events. [2023-09-01 00:39:23,220 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 00:39:23,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 171 events. 17/171 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 420 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 85. Up to 4 conditions per place. [2023-09-01 00:39:23,226 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 127 transitions, 262 flow [2023-09-01 00:39:23,231 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 122 transitions, 249 flow [2023-09-01 00:39:23,234 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:39:23,247 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 114 places, 122 transitions, 249 flow [2023-09-01 00:39:23,253 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 114 places, 122 transitions, 249 flow [2023-09-01 00:39:23,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 122 transitions, 249 flow [2023-09-01 00:39:23,288 INFO L130 PetriNetUnfolder]: 16/166 cut-off events. [2023-09-01 00:39:23,289 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:39:23,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 166 events. 16/166 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 404 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 85. Up to 4 conditions per place. [2023-09-01 00:39:23,293 INFO L119 LiptonReduction]: Number of co-enabled transitions 3600 [2023-09-01 00:39:26,572 INFO L134 LiptonReduction]: Checked pairs total: 7806 [2023-09-01 00:39:26,573 INFO L136 LiptonReduction]: Total number of compositions: 103 [2023-09-01 00:39:26,584 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:39:26,589 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@2d78d01a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:39:26,589 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:39:26,595 INFO L130 PetriNetUnfolder]: 0/20 cut-off events. [2023-09-01 00:39:26,595 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:39:26,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:39:26,596 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 00:39:26,596 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:39:26,600 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:39:26,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1256600336, now seen corresponding path program 1 times [2023-09-01 00:39:26,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:39:26,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085343439] [2023-09-01 00:39:26,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:39:26,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:39:26,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:39:26,723 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:39:26,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:39:26,785 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:39:26,786 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:39:26,787 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:39:26,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 00:39:26,789 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:39:26,791 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:39:26,792 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:39:26,792 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 00:39:26,827 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 00:39:26,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 165 transitions, 348 flow [2023-09-01 00:39:26,864 INFO L130 PetriNetUnfolder]: 31/282 cut-off events. [2023-09-01 00:39:26,864 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 00:39:26,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 282 events. 31/282 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 898 event pairs, 0 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 173. Up to 8 conditions per place. [2023-09-01 00:39:26,867 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 165 transitions, 348 flow [2023-09-01 00:39:26,868 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 165 transitions, 348 flow [2023-09-01 00:39:26,869 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:39:26,869 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 151 places, 165 transitions, 348 flow [2023-09-01 00:39:26,869 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 151 places, 165 transitions, 348 flow [2023-09-01 00:39:26,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 165 transitions, 348 flow [2023-09-01 00:39:26,905 INFO L130 PetriNetUnfolder]: 31/282 cut-off events. [2023-09-01 00:39:26,906 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 00:39:26,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 282 events. 31/282 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 898 event pairs, 0 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 173. Up to 8 conditions per place. [2023-09-01 00:39:26,914 INFO L119 LiptonReduction]: Number of co-enabled transitions 10584 [2023-09-01 00:39:29,987 INFO L134 LiptonReduction]: Checked pairs total: 26332 [2023-09-01 00:39:29,988 INFO L136 LiptonReduction]: Total number of compositions: 121 [2023-09-01 00:39:29,989 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:39:29,990 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@2d78d01a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:39:29,990 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:39:30,001 INFO L130 PetriNetUnfolder]: 8/70 cut-off events. [2023-09-01 00:39:30,002 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 00:39:30,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:39:30,002 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 00:39:30,003 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:39:30,004 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:39:30,004 INFO L85 PathProgramCache]: Analyzing trace with hash -154995264, now seen corresponding path program 1 times [2023-09-01 00:39:30,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:39:30,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808982655] [2023-09-01 00:39:30,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:39:30,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:39:30,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:39:30,046 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:39:30,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:39:30,088 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:39:30,088 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:39:30,088 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:39:30,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 00:39:30,089 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:39:30,090 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:39:30,090 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:39:30,090 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 00:39:30,111 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 00:39:30,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 203 transitions, 436 flow [2023-09-01 00:39:30,170 INFO L130 PetriNetUnfolder]: 50/434 cut-off events. [2023-09-01 00:39:30,170 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 00:39:30,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 434 events. 50/434 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1597 event pairs, 1 based on Foata normal form. 0/344 useless extension candidates. Maximal degree in co-relation 290. Up to 16 conditions per place. [2023-09-01 00:39:30,174 INFO L82 GeneralOperation]: Start removeDead. Operand has 184 places, 203 transitions, 436 flow [2023-09-01 00:39:30,176 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 184 places, 203 transitions, 436 flow [2023-09-01 00:39:30,177 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:39:30,177 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 184 places, 203 transitions, 436 flow [2023-09-01 00:39:30,177 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 184 places, 203 transitions, 436 flow [2023-09-01 00:39:30,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 203 transitions, 436 flow [2023-09-01 00:39:30,219 INFO L130 PetriNetUnfolder]: 50/434 cut-off events. [2023-09-01 00:39:30,220 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 00:39:30,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 434 events. 50/434 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1597 event pairs, 1 based on Foata normal form. 0/344 useless extension candidates. Maximal degree in co-relation 290. Up to 16 conditions per place. [2023-09-01 00:39:30,237 INFO L119 LiptonReduction]: Number of co-enabled transitions 20088 [2023-09-01 00:39:33,281 INFO L134 LiptonReduction]: Checked pairs total: 53133 [2023-09-01 00:39:33,281 INFO L136 LiptonReduction]: Total number of compositions: 142 [2023-09-01 00:39:33,283 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:39:33,284 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@2d78d01a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:39:33,285 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:39:33,293 INFO L130 PetriNetUnfolder]: 17/114 cut-off events. [2023-09-01 00:39:33,294 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 00:39:33,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:39:33,294 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 00:39:33,294 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:39:33,295 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:39:33,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1820038646, now seen corresponding path program 1 times [2023-09-01 00:39:33,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:39:33,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785254387] [2023-09-01 00:39:33,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:39:33,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:39:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:39:33,337 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:39:33,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:39:33,377 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:39:33,380 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:39:33,380 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:39:33,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 00:39:33,381 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:39:33,381 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:39:33,382 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:39:33,382 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 00:39:33,431 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 00:39:33,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 241 transitions, 526 flow [2023-09-01 00:39:33,517 INFO L130 PetriNetUnfolder]: 81/670 cut-off events. [2023-09-01 00:39:33,517 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 00:39:33,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 725 conditions, 670 events. 81/670 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2872 event pairs, 6 based on Foata normal form. 0/526 useless extension candidates. Maximal degree in co-relation 454. Up to 32 conditions per place. [2023-09-01 00:39:33,524 INFO L82 GeneralOperation]: Start removeDead. Operand has 217 places, 241 transitions, 526 flow [2023-09-01 00:39:33,528 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 217 places, 241 transitions, 526 flow [2023-09-01 00:39:33,528 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:39:33,528 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 217 places, 241 transitions, 526 flow [2023-09-01 00:39:33,529 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 217 places, 241 transitions, 526 flow [2023-09-01 00:39:33,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 241 transitions, 526 flow [2023-09-01 00:39:33,614 INFO L130 PetriNetUnfolder]: 81/670 cut-off events. [2023-09-01 00:39:33,614 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 00:39:33,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 725 conditions, 670 events. 81/670 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2872 event pairs, 6 based on Foata normal form. 0/526 useless extension candidates. Maximal degree in co-relation 454. Up to 32 conditions per place. [2023-09-01 00:39:33,635 INFO L119 LiptonReduction]: Number of co-enabled transitions 32400 [2023-09-01 00:39:36,834 INFO L134 LiptonReduction]: Checked pairs total: 89705 [2023-09-01 00:39:36,834 INFO L136 LiptonReduction]: Total number of compositions: 165 [2023-09-01 00:39:36,836 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:39:36,837 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@2d78d01a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:39:36,837 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:39:36,848 INFO L130 PetriNetUnfolder]: 22/151 cut-off events. [2023-09-01 00:39:36,849 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2023-09-01 00:39:36,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:39:36,849 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 00:39:36,849 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:39:36,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:39:36,850 INFO L85 PathProgramCache]: Analyzing trace with hash -4464150, now seen corresponding path program 1 times [2023-09-01 00:39:36,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:39:36,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389238578] [2023-09-01 00:39:36,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:39:36,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:39:36,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:39:36,872 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:39:36,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:39:36,892 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:39:36,892 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:39:36,892 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:39:36,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 00:39:36,893 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:39:36,893 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:39:36,894 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:39:36,894 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 00:39:36,919 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 00:39:36,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 279 transitions, 618 flow [2023-09-01 00:39:37,079 INFO L130 PetriNetUnfolder]: 140/1078 cut-off events. [2023-09-01 00:39:37,080 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 00:39:37,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1189 conditions, 1078 events. 140/1078 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5446 event pairs, 23 based on Foata normal form. 0/840 useless extension candidates. Maximal degree in co-relation 715. Up to 80 conditions per place. [2023-09-01 00:39:37,093 INFO L82 GeneralOperation]: Start removeDead. Operand has 250 places, 279 transitions, 618 flow [2023-09-01 00:39:37,101 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 250 places, 279 transitions, 618 flow [2023-09-01 00:39:37,101 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:39:37,101 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 250 places, 279 transitions, 618 flow [2023-09-01 00:39:37,102 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 250 places, 279 transitions, 618 flow [2023-09-01 00:39:37,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 279 transitions, 618 flow [2023-09-01 00:39:37,255 INFO L130 PetriNetUnfolder]: 140/1078 cut-off events. [2023-09-01 00:39:37,256 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 00:39:37,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1189 conditions, 1078 events. 140/1078 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5446 event pairs, 23 based on Foata normal form. 0/840 useless extension candidates. Maximal degree in co-relation 715. Up to 80 conditions per place. [2023-09-01 00:39:37,301 INFO L119 LiptonReduction]: Number of co-enabled transitions 47520 [2023-09-01 00:39:40,651 INFO L134 LiptonReduction]: Checked pairs total: 150680 [2023-09-01 00:39:40,651 INFO L136 LiptonReduction]: Total number of compositions: 185 [2023-09-01 00:39:40,653 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:39:40,653 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@2d78d01a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:39:40,654 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:39:40,674 INFO L130 PetriNetUnfolder]: 37/211 cut-off events. [2023-09-01 00:39:40,674 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2023-09-01 00:39:40,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:39:40,674 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:39:40,675 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:39:40,675 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:39:40,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1683293317, now seen corresponding path program 1 times [2023-09-01 00:39:40,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:39:40,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140984530] [2023-09-01 00:39:40,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:39:40,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:39:40,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:39:40,699 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:39:40,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:39:40,717 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:39:40,717 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:39:40,718 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:39:40,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 00:39:40,718 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:39:40,719 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:39:40,719 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:39:40,719 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 00:39:40,741 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 00:39:40,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 283 places, 317 transitions, 712 flow [2023-09-01 00:39:41,146 INFO L130 PetriNetUnfolder]: 263/1838 cut-off events. [2023-09-01 00:39:41,147 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 00:39:41,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2070 conditions, 1838 events. 263/1838 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 11260 event pairs, 72 based on Foata normal form. 0/1426 useless extension candidates. Maximal degree in co-relation 1177. Up to 192 conditions per place. [2023-09-01 00:39:41,173 INFO L82 GeneralOperation]: Start removeDead. Operand has 283 places, 317 transitions, 712 flow [2023-09-01 00:39:41,187 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 283 places, 317 transitions, 712 flow [2023-09-01 00:39:41,188 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:39:41,188 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 283 places, 317 transitions, 712 flow [2023-09-01 00:39:41,188 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 283 places, 317 transitions, 712 flow [2023-09-01 00:39:41,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 283 places, 317 transitions, 712 flow [2023-09-01 00:39:41,504 INFO L130 PetriNetUnfolder]: 263/1838 cut-off events. [2023-09-01 00:39:41,504 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 00:39:41,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2070 conditions, 1838 events. 263/1838 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 11260 event pairs, 72 based on Foata normal form. 0/1426 useless extension candidates. Maximal degree in co-relation 1177. Up to 192 conditions per place. [2023-09-01 00:39:41,585 INFO L119 LiptonReduction]: Number of co-enabled transitions 65448 [2023-09-01 00:39:45,092 INFO L134 LiptonReduction]: Checked pairs total: 212548 [2023-09-01 00:39:45,092 INFO L136 LiptonReduction]: Total number of compositions: 207 [2023-09-01 00:39:45,094 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:39:45,094 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@2d78d01a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:39:45,095 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:39:45,115 INFO L130 PetriNetUnfolder]: 41/256 cut-off events. [2023-09-01 00:39:45,115 INFO L131 PetriNetUnfolder]: For 66/66 co-relation queries the response was YES. [2023-09-01 00:39:45,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:39:45,115 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:39:45,116 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:39:45,116 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:39:45,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1787883852, now seen corresponding path program 1 times [2023-09-01 00:39:45,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:39:45,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153862067] [2023-09-01 00:39:45,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:39:45,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:39:45,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:39:45,156 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:39:45,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:39:45,202 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:39:45,208 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:39:45,208 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:39:45,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 00:39:45,210 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:39:45,211 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:39:45,211 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:39:45,211 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 00:39:45,249 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 00:39:45,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 316 places, 355 transitions, 808 flow [2023-09-01 00:39:45,950 INFO L130 PetriNetUnfolder]: 530/3318 cut-off events. [2023-09-01 00:39:45,950 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 00:39:46,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3816 conditions, 3318 events. 530/3318 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 24277 event pairs, 201 based on Foata normal form. 0/2572 useless extension candidates. Maximal degree in co-relation 2056. Up to 448 conditions per place. [2023-09-01 00:39:46,006 INFO L82 GeneralOperation]: Start removeDead. Operand has 316 places, 355 transitions, 808 flow [2023-09-01 00:39:46,031 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 316 places, 355 transitions, 808 flow [2023-09-01 00:39:46,031 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:39:46,031 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 316 places, 355 transitions, 808 flow [2023-09-01 00:39:46,031 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 316 places, 355 transitions, 808 flow [2023-09-01 00:39:46,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 316 places, 355 transitions, 808 flow [2023-09-01 00:39:46,708 INFO L130 PetriNetUnfolder]: 530/3318 cut-off events. [2023-09-01 00:39:46,708 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 00:39:46,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3816 conditions, 3318 events. 530/3318 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 24277 event pairs, 201 based on Foata normal form. 0/2572 useless extension candidates. Maximal degree in co-relation 2056. Up to 448 conditions per place. [2023-09-01 00:39:46,943 INFO L119 LiptonReduction]: Number of co-enabled transitions 86184 [2023-09-01 00:39:50,579 INFO L134 LiptonReduction]: Checked pairs total: 256498 [2023-09-01 00:39:50,579 INFO L136 LiptonReduction]: Total number of compositions: 227 [2023-09-01 00:39:50,581 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:39:50,581 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@2d78d01a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:39:50,581 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:39:50,615 INFO L130 PetriNetUnfolder]: 61/339 cut-off events. [2023-09-01 00:39:50,616 INFO L131 PetriNetUnfolder]: For 103/103 co-relation queries the response was YES. [2023-09-01 00:39:50,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:39:50,616 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:39:50,617 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:39:50,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:39:50,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1996735468, now seen corresponding path program 1 times [2023-09-01 00:39:50,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:39:50,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440347741] [2023-09-01 00:39:50,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:39:50,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:39:50,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:39:50,639 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:39:50,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:39:50,660 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:39:50,661 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:39:50,661 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:39:50,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 00:39:50,661 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:39:50,662 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:39:50,662 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:39:50,662 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 00:39:50,696 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 00:39:50,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 349 places, 393 transitions, 906 flow [2023-09-01 00:39:51,973 INFO L130 PetriNetUnfolder]: 1117/6270 cut-off events. [2023-09-01 00:39:51,973 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 00:39:52,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7355 conditions, 6270 events. 1117/6270 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 54961 event pairs, 522 based on Foata normal form. 0/4870 useless extension candidates. Maximal degree in co-relation 3800. Up to 1024 conditions per place. [2023-09-01 00:39:52,068 INFO L82 GeneralOperation]: Start removeDead. Operand has 349 places, 393 transitions, 906 flow [2023-09-01 00:39:52,119 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 349 places, 393 transitions, 906 flow [2023-09-01 00:39:52,119 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:39:52,119 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 349 places, 393 transitions, 906 flow [2023-09-01 00:39:52,120 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 349 places, 393 transitions, 906 flow [2023-09-01 00:39:52,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 349 places, 393 transitions, 906 flow [2023-09-01 00:39:53,410 INFO L130 PetriNetUnfolder]: 1117/6270 cut-off events. [2023-09-01 00:39:53,410 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 00:39:53,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7355 conditions, 6270 events. 1117/6270 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 54961 event pairs, 522 based on Foata normal form. 0/4870 useless extension candidates. Maximal degree in co-relation 3800. Up to 1024 conditions per place. [2023-09-01 00:39:53,668 INFO L119 LiptonReduction]: Number of co-enabled transitions 109728 [2023-09-01 00:39:57,341 INFO L134 LiptonReduction]: Checked pairs total: 331556 [2023-09-01 00:39:57,341 INFO L136 LiptonReduction]: Total number of compositions: 249 [2023-09-01 00:39:57,343 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:39:57,343 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@2d78d01a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:39:57,343 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:39:57,372 INFO L130 PetriNetUnfolder]: 68/403 cut-off events. [2023-09-01 00:39:57,372 INFO L131 PetriNetUnfolder]: For 154/154 co-relation queries the response was YES. [2023-09-01 00:39:57,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:39:57,372 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:39:57,373 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:39:57,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:39:57,373 INFO L85 PathProgramCache]: Analyzing trace with hash -399943582, now seen corresponding path program 1 times [2023-09-01 00:39:57,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:39:57,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849452089] [2023-09-01 00:39:57,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:39:57,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:39:57,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:39:57,394 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:39:57,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:39:57,413 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:39:57,414 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:39:57,414 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:39:57,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 00:39:57,414 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:39:57,415 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:39:57,415 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:39:57,415 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 00:39:57,446 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 00:39:57,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 382 places, 431 transitions, 1006 flow [2023-09-01 00:39:59,857 INFO L130 PetriNetUnfolder]: 2408/12230 cut-off events. [2023-09-01 00:39:59,857 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 00:40:00,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14607 conditions, 12230 events. 2408/12230 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 123533 event pairs, 1291 based on Foata normal form. 0/9536 useless extension candidates. Maximal degree in co-relation 7337. Up to 2304 conditions per place. [2023-09-01 00:40:00,049 INFO L82 GeneralOperation]: Start removeDead. Operand has 382 places, 431 transitions, 1006 flow [2023-09-01 00:40:00,130 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 382 places, 431 transitions, 1006 flow [2023-09-01 00:40:00,130 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:40:00,130 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 382 places, 431 transitions, 1006 flow [2023-09-01 00:40:00,130 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 382 places, 431 transitions, 1006 flow [2023-09-01 00:40:00,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 382 places, 431 transitions, 1006 flow [2023-09-01 00:40:02,432 INFO L130 PetriNetUnfolder]: 2408/12230 cut-off events. [2023-09-01 00:40:02,432 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 00:40:02,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14607 conditions, 12230 events. 2408/12230 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 123533 event pairs, 1291 based on Foata normal form. 0/9536 useless extension candidates. Maximal degree in co-relation 7337. Up to 2304 conditions per place. [2023-09-01 00:40:03,226 INFO L119 LiptonReduction]: Number of co-enabled transitions 136080 [2023-09-01 00:40:07,097 INFO L134 LiptonReduction]: Checked pairs total: 417033 [2023-09-01 00:40:07,097 INFO L136 LiptonReduction]: Total number of compositions: 270 [2023-09-01 00:40:07,098 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:40:07,099 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@2d78d01a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:40:07,099 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:40:07,131 INFO L130 PetriNetUnfolder]: 88/506 cut-off events. [2023-09-01 00:40:07,131 INFO L131 PetriNetUnfolder]: For 223/223 co-relation queries the response was YES. [2023-09-01 00:40:07,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:40:07,132 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:40:07,132 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:40:07,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:40:07,132 INFO L85 PathProgramCache]: Analyzing trace with hash 408406766, now seen corresponding path program 1 times [2023-09-01 00:40:07,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:40:07,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710097442] [2023-09-01 00:40:07,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:40:07,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:40:07,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:40:07,153 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:40:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:40:07,175 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:40:07,175 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:40:07,175 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:40:07,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 00:40:07,176 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:40:07,176 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:40:07,176 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:40:07,177 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 00:40:07,217 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 00:40:07,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 415 places, 469 transitions, 1108 flow [2023-09-01 00:40:12,555 INFO L130 PetriNetUnfolder]: 5235/24334 cut-off events. [2023-09-01 00:40:12,555 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 00:40:12,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29540 conditions, 24334 events. 5235/24334 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 602. Compared 276966 event pairs, 3084 based on Foata normal form. 0/19066 useless extension candidates. Maximal degree in co-relation 14587. Up to 5120 conditions per place. [2023-09-01 00:40:12,965 INFO L82 GeneralOperation]: Start removeDead. Operand has 415 places, 469 transitions, 1108 flow [2023-09-01 00:40:13,153 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 415 places, 469 transitions, 1108 flow [2023-09-01 00:40:13,153 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:40:13,153 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 415 places, 469 transitions, 1108 flow [2023-09-01 00:40:13,153 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 415 places, 469 transitions, 1108 flow [2023-09-01 00:40:13,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 415 places, 469 transitions, 1108 flow [2023-09-01 00:40:18,419 INFO L130 PetriNetUnfolder]: 5235/24334 cut-off events. [2023-09-01 00:40:18,419 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 00:40:18,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29540 conditions, 24334 events. 5235/24334 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 602. Compared 276966 event pairs, 3084 based on Foata normal form. 0/19066 useless extension candidates. Maximal degree in co-relation 14587. Up to 5120 conditions per place. [2023-09-01 00:40:19,974 INFO L119 LiptonReduction]: Number of co-enabled transitions 165240 [2023-09-01 00:40:23,772 INFO L134 LiptonReduction]: Checked pairs total: 497475 [2023-09-01 00:40:23,772 INFO L136 LiptonReduction]: Total number of compositions: 290 [2023-09-01 00:40:23,773 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:40:23,774 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@2d78d01a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:40:23,774 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:40:23,883 INFO L130 PetriNetUnfolder]: 128/666 cut-off events. [2023-09-01 00:40:23,883 INFO L131 PetriNetUnfolder]: For 317/317 co-relation queries the response was YES. [2023-09-01 00:40:23,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:40:23,884 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:40:23,884 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:40:23,884 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:40:23,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1528180343, now seen corresponding path program 1 times [2023-09-01 00:40:23,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:40:23,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243559397] [2023-09-01 00:40:23,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:40:23,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:40:23,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:40:23,909 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:40:23,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:40:23,930 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:40:23,930 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:40:23,930 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:40:23,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 00:40:23,931 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:40:23,931 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:40:23,931 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:40:23,931 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 00:40:23,965 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 00:40:23,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 448 places, 507 transitions, 1212 flow [2023-09-01 00:40:35,810 INFO L130 PetriNetUnfolder]: 11390/48982 cut-off events. [2023-09-01 00:40:35,810 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 00:40:37,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60346 conditions, 48982 events. 11390/48982 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 1147. Compared 620975 event pairs, 7181 based on Foata normal form. 0/38580 useless extension candidates. Maximal degree in co-relation 29518. Up to 11264 conditions per place. [2023-09-01 00:40:37,090 INFO L82 GeneralOperation]: Start removeDead. Operand has 448 places, 507 transitions, 1212 flow [2023-09-01 00:40:37,655 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 448 places, 507 transitions, 1212 flow [2023-09-01 00:40:37,655 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:40:37,655 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 448 places, 507 transitions, 1212 flow [2023-09-01 00:40:37,655 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 448 places, 507 transitions, 1212 flow [2023-09-01 00:40:37,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 448 places, 507 transitions, 1212 flow [2023-09-01 00:40:49,408 INFO L130 PetriNetUnfolder]: 11390/48982 cut-off events. [2023-09-01 00:40:49,408 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 00:40:50,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60346 conditions, 48982 events. 11390/48982 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 1147. Compared 620975 event pairs, 7181 based on Foata normal form. 0/38580 useless extension candidates. Maximal degree in co-relation 29518. Up to 11264 conditions per place. [2023-09-01 00:40:52,868 INFO L119 LiptonReduction]: Number of co-enabled transitions 197208 [2023-09-01 00:40:56,904 INFO L134 LiptonReduction]: Checked pairs total: 598578 [2023-09-01 00:40:56,904 INFO L136 LiptonReduction]: Total number of compositions: 311 [2023-09-01 00:40:56,906 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:40:56,906 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@2d78d01a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:40:56,906 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:40:56,987 INFO L130 PetriNetUnfolder]: 173/856 cut-off events. [2023-09-01 00:40:56,987 INFO L131 PetriNetUnfolder]: For 446/446 co-relation queries the response was YES. [2023-09-01 00:40:56,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:40:56,988 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:40:56,988 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:40:56,988 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:40:56,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1484063559, now seen corresponding path program 1 times [2023-09-01 00:40:56,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:40:56,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099673801] [2023-09-01 00:40:56,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:40:56,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:40:57,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:40:57,014 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:40:57,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:40:57,036 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:40:57,036 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:40:57,037 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:40:57,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 00:40:57,037 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:40:57,038 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:40:57,038 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:40:57,038 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 00:40:57,074 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 00:40:57,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 481 places, 545 transitions, 1318 flow [2023-09-01 00:41:24,345 INFO L130 PetriNetUnfolder]: 24713/99230 cut-off events. [2023-09-01 00:41:24,346 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 00:41:30,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123921 conditions, 99230 events. 24713/99230 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 2215. Compared 1379067 event pairs, 16398 based on Foata normal form. 0/78574 useless extension candidates. Maximal degree in co-relation 60322. Up to 24576 conditions per place. [2023-09-01 00:41:30,727 INFO L82 GeneralOperation]: Start removeDead. Operand has 481 places, 545 transitions, 1318 flow [2023-09-01 00:41:32,038 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 481 places, 545 transitions, 1318 flow [2023-09-01 00:41:32,038 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:41:32,038 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 481 places, 545 transitions, 1318 flow [2023-09-01 00:41:32,039 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 481 places, 545 transitions, 1318 flow [2023-09-01 00:41:32,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 481 places, 545 transitions, 1318 flow [2023-09-01 00:41:57,527 INFO L130 PetriNetUnfolder]: 24713/99230 cut-off events. [2023-09-01 00:41:57,527 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 00:42:02,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123921 conditions, 99230 events. 24713/99230 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 2215. Compared 1379067 event pairs, 16398 based on Foata normal form. 0/78574 useless extension candidates. Maximal degree in co-relation 60322. Up to 24576 conditions per place. [2023-09-01 00:42:08,464 INFO L119 LiptonReduction]: Number of co-enabled transitions 231984 [2023-09-01 00:42:12,936 INFO L134 LiptonReduction]: Checked pairs total: 811634 [2023-09-01 00:42:12,936 INFO L136 LiptonReduction]: Total number of compositions: 332 [2023-09-01 00:42:12,938 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:42:12,938 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@2d78d01a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:42:12,938 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:42:13,033 INFO L130 PetriNetUnfolder]: 242/1122 cut-off events. [2023-09-01 00:42:13,033 INFO L131 PetriNetUnfolder]: For 624/624 co-relation queries the response was YES. [2023-09-01 00:42:13,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:42:13,034 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 00:42:13,034 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:42:13,034 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:42:13,034 INFO L85 PathProgramCache]: Analyzing trace with hash -2089116547, now seen corresponding path program 1 times [2023-09-01 00:42:13,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:42:13,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607855169] [2023-09-01 00:42:13,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:42:13,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:42:13,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:42:13,058 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:42:13,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:42:13,082 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:42:13,082 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:42:13,082 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:42:13,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 00:42:13,082 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:42:13,083 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:42:13,083 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:42:13,083 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 00:42:13,126 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 00:42:13,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 514 places, 583 transitions, 1426 flow [2023-09-01 00:43:12,338 INFO L130 PetriNetUnfolder]: 53396/201702 cut-off events. [2023-09-01 00:43:12,338 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 00:43:25,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255081 conditions, 201702 events. 53396/201702 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 4220. Compared 3035507 event pairs, 36879 based on Foata normal form. 0/160552 useless extension candidates. Maximal degree in co-relation 123895. Up to 53248 conditions per place. [2023-09-01 00:43:25,562 INFO L82 GeneralOperation]: Start removeDead. Operand has 514 places, 583 transitions, 1426 flow [2023-09-01 00:43:29,674 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 514 places, 583 transitions, 1426 flow [2023-09-01 00:43:29,675 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:43:29,675 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 514 places, 583 transitions, 1426 flow [2023-09-01 00:43:29,675 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 514 places, 583 transitions, 1426 flow [2023-09-01 00:43:29,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 514 places, 583 transitions, 1426 flow [2023-09-01 00:44:38,959 INFO L130 PetriNetUnfolder]: 53396/201702 cut-off events. [2023-09-01 00:44:38,960 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 00:44:52,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255081 conditions, 201702 events. 53396/201702 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 4220. Compared 3035507 event pairs, 36879 based on Foata normal form. 0/160552 useless extension candidates. Maximal degree in co-relation 123895. Up to 53248 conditions per place. [2023-09-01 00:45:23,990 INFO L119 LiptonReduction]: Number of co-enabled transitions 269568 [2023-09-01 00:45:29,023 INFO L134 LiptonReduction]: Checked pairs total: 833845 [2023-09-01 00:45:29,023 INFO L136 LiptonReduction]: Total number of compositions: 353 [2023-09-01 00:45:29,025 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:45:29,025 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@2d78d01a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:45:29,025 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:45:29,175 INFO L130 PetriNetUnfolder]: 350/1504 cut-off events. [2023-09-01 00:45:29,176 INFO L131 PetriNetUnfolder]: For 873/873 co-relation queries the response was YES. [2023-09-01 00:45:29,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:45:29,176 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 00:45:29,176 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:45:29,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:45:29,177 INFO L85 PathProgramCache]: Analyzing trace with hash -677945184, now seen corresponding path program 1 times [2023-09-01 00:45:29,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:45:29,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019425505] [2023-09-01 00:45:29,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:45:29,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:45:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:45:29,203 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:45:29,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:45:29,229 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:45:29,229 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:45:29,229 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:45:29,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 00:45:29,230 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:45:29,230 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:45:29,230 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:45:29,231 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-09-01 00:45:29,273 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-09-01 00:45:29,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 547 places, 621 transitions, 1536 flow