./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --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/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.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 6883737711af32a6a824eca7af237353e2fdaf7712a6b3c22083c0d47b565ee7 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 04:33:25,948 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 04:33:25,950 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 04:33:25,996 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 04:33:25,997 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 04:33:26,000 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 04:33:26,002 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 04:33:26,004 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 04:33:26,007 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 04:33:26,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 04:33:26,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 04:33:26,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 04:33:26,015 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 04:33:26,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 04:33:26,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 04:33:26,023 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 04:33:26,025 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 04:33:26,026 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 04:33:26,027 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 04:33:26,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 04:33:26,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 04:33:26,042 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 04:33:26,044 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 04:33:26,045 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 04:33:26,051 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 04:33:26,052 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 04:33:26,052 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 04:33:26,054 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 04:33:26,055 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 04:33:26,056 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 04:33:26,056 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 04:33:26,057 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 04:33:26,059 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 04:33:26,060 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 04:33:26,061 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 04:33:26,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 04:33:26,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 04:33:26,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 04:33:26,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 04:33:26,063 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 04:33:26,063 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 04:33:26,065 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 04:33:26,099 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 04:33:26,099 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 04:33:26,100 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 04:33:26,100 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 04:33:26,101 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 04:33:26,101 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 04:33:26,102 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 04:33:26,102 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 04:33:26,102 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 04:33:26,103 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 04:33:26,103 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 04:33:26,104 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 04:33:26,104 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 04:33:26,104 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 04:33:26,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 04:33:26,104 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 04:33:26,105 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 04:33:26,105 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 04:33:26,105 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 04:33:26,105 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 04:33:26,105 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 04:33:26,105 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 04:33:26,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 04:33:26,106 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 04:33:26,106 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 04:33:26,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 04:33:26,107 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 04:33:26,107 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 04:33:26,107 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 04:33:26,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 04:33:26,107 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 04:33:26,107 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 04:33:26,108 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 04:33:26,108 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 04:33:26,108 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6883737711af32a6a824eca7af237353e2fdaf7712a6b3c22083c0d47b565ee7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 04:33:26,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 04:33:26,434 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 04:33:26,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 04:33:26,438 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 04:33:26,438 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 04:33:26,440 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2023-08-30 04:33:27,593 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 04:33:27,872 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 04:33:27,876 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2023-08-30 04:33:27,902 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f647b7693/7664d15ef1f14d08bf8d22266cf6966f/FLAGd90f4b46e [2023-08-30 04:33:27,918 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f647b7693/7664d15ef1f14d08bf8d22266cf6966f [2023-08-30 04:33:27,920 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 04:33:27,921 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 04:33:27,922 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 04:33:27,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 04:33:27,925 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 04:33:27,926 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:33:27" (1/1) ... [2023-08-30 04:33:27,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69f25396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:33:27, skipping insertion in model container [2023-08-30 04:33:27,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:33:27" (1/1) ... [2023-08-30 04:33:27,933 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 04:33:27,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 04:33:28,143 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/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i[1120,1133] [2023-08-30 04:33:28,322 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 04:33:28,339 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 04:33:28,352 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/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i[1120,1133] [2023-08-30 04:33:28,402 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 04:33:28,449 INFO L208 MainTranslator]: Completed translation [2023-08-30 04:33:28,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:33:28 WrapperNode [2023-08-30 04:33:28,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 04:33:28,451 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 04:33:28,451 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 04:33:28,451 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 04:33:28,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:33:28" (1/1) ... [2023-08-30 04:33:28,468 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:33:28" (1/1) ... [2023-08-30 04:33:28,490 INFO L138 Inliner]: procedures = 165, calls = 42, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 143 [2023-08-30 04:33:28,491 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 04:33:28,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 04:33:28,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 04:33:28,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 04:33:28,499 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:33:28" (1/1) ... [2023-08-30 04:33:28,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:33:28" (1/1) ... [2023-08-30 04:33:28,502 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:33:28" (1/1) ... [2023-08-30 04:33:28,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:33:28" (1/1) ... [2023-08-30 04:33:28,508 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:33:28" (1/1) ... [2023-08-30 04:33:28,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:33:28" (1/1) ... [2023-08-30 04:33:28,512 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:33:28" (1/1) ... [2023-08-30 04:33:28,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:33:28" (1/1) ... [2023-08-30 04:33:28,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 04:33:28,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 04:33:28,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 04:33:28,516 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 04:33:28,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:33:28" (1/1) ... [2023-08-30 04:33:28,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 04:33:28,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 04:33:28,547 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) [2023-08-30 04:33:28,560 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 [2023-08-30 04:33:28,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 04:33:28,578 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 04:33:28,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 04:33:28,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 04:33:28,579 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 04:33:28,579 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 04:33:28,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 04:33:28,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 04:33:28,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 04:33:28,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 04:33:28,581 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 04:33:28,748 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 04:33:28,749 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 04:33:29,056 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 04:33:29,063 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 04:33:29,064 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 04:33:29,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:33:29 BoogieIcfgContainer [2023-08-30 04:33:29,066 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 04:33:29,067 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 04:33:29,067 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 04:33:29,070 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 04:33:29,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 04:33:27" (1/3) ... [2023-08-30 04:33:29,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@477ada0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:33:29, skipping insertion in model container [2023-08-30 04:33:29,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:33:28" (2/3) ... [2023-08-30 04:33:29,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@477ada0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:33:29, skipping insertion in model container [2023-08-30 04:33:29,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:33:29" (3/3) ... [2023-08-30 04:33:29,072 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2023-08-30 04:33:29,087 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 04:33:29,088 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-30 04:33:29,088 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 04:33:29,198 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 04:33:29,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 172 transitions, 349 flow [2023-08-30 04:33:29,316 INFO L130 PetriNetUnfolder]: 8/177 cut-off events. [2023-08-30 04:33:29,316 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 04:33:29,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 177 events. 8/177 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 173 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 124. Up to 2 conditions per place. [2023-08-30 04:33:29,322 INFO L82 GeneralOperation]: Start removeDead. Operand has 167 places, 172 transitions, 349 flow [2023-08-30 04:33:29,327 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 171 transitions, 345 flow [2023-08-30 04:33:29,330 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 04:33:29,338 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 171 transitions, 345 flow [2023-08-30 04:33:29,340 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 171 transitions, 345 flow [2023-08-30 04:33:29,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 171 transitions, 345 flow [2023-08-30 04:33:29,368 INFO L130 PetriNetUnfolder]: 8/177 cut-off events. [2023-08-30 04:33:29,369 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 04:33:29,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 177 events. 8/177 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 173 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 124. Up to 2 conditions per place. [2023-08-30 04:33:29,374 INFO L119 LiptonReduction]: Number of co-enabled transitions 7296 [2023-08-30 04:33:34,654 INFO L134 LiptonReduction]: Checked pairs total: 13032 [2023-08-30 04:33:34,654 INFO L136 LiptonReduction]: Total number of compositions: 187 [2023-08-30 04:33:34,676 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 04:33:34,685 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;@262bfc10, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 04:33:34,685 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-08-30 04:33:34,689 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-30 04:33:34,690 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 04:33:34,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:33:34,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 04:33:34,691 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-30 04:33:34,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:33:34,694 INFO L85 PathProgramCache]: Analyzing trace with hash 679, now seen corresponding path program 1 times [2023-08-30 04:33:34,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:33:34,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059467594] [2023-08-30 04:33:34,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:33:34,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:33:34,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:33:34,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:33:34,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:33:34,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059467594] [2023-08-30 04:33:34,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059467594] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:33:34,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:33:34,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 04:33:34,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492000891] [2023-08-30 04:33:34,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:33:34,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 04:33:34,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:33:34,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 04:33:34,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 04:33:34,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 359 [2023-08-30 04:33:34,846 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 37 transitions, 77 flow. Second operand has 2 states, 2 states have (on average 161.5) internal successors, (323), 2 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:34,847 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:33:34,847 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 359 [2023-08-30 04:33:34,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:33:34,949 INFO L130 PetriNetUnfolder]: 136/344 cut-off events. [2023-08-30 04:33:34,954 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 04:33:34,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 638 conditions, 344 events. 136/344 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1478 event pairs, 126 based on Foata normal form. 10/295 useless extension candidates. Maximal degree in co-relation 624. Up to 290 conditions per place. [2023-08-30 04:33:34,961 INFO L137 encePairwiseOnDemand]: 355/359 looper letters, 27 selfloop transitions, 0 changer transitions 0/33 dead transitions. [2023-08-30 04:33:34,961 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 33 transitions, 123 flow [2023-08-30 04:33:34,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 04:33:34,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 04:33:34,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 353 transitions. [2023-08-30 04:33:34,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49164345403899723 [2023-08-30 04:33:34,976 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 353 transitions. [2023-08-30 04:33:34,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 353 transitions. [2023-08-30 04:33:34,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:33:34,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 353 transitions. [2023-08-30 04:33:34,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 176.5) internal successors, (353), 2 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:34,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 359.0) internal successors, (1077), 3 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:34,991 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 359.0) internal successors, (1077), 3 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:34,993 INFO L175 Difference]: Start difference. First operand has 37 places, 37 transitions, 77 flow. Second operand 2 states and 353 transitions. [2023-08-30 04:33:34,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 33 transitions, 123 flow [2023-08-30 04:33:34,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 122 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:33:34,997 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 68 flow [2023-08-30 04:33:34,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=68, PETRI_PLACES=35, PETRI_TRANSITIONS=33} [2023-08-30 04:33:35,002 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -2 predicate places. [2023-08-30 04:33:35,002 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 68 flow [2023-08-30 04:33:35,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 161.5) internal successors, (323), 2 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:35,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:33:35,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 04:33:35,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 04:33:35,003 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-30 04:33:35,004 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:33:35,004 INFO L85 PathProgramCache]: Analyzing trace with hash 21278, now seen corresponding path program 1 times [2023-08-30 04:33:35,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:33:35,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468385392] [2023-08-30 04:33:35,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:33:35,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:33:35,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:33:35,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:33:35,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:33:35,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468385392] [2023-08-30 04:33:35,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468385392] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:33:35,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:33:35,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:33:35,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504210750] [2023-08-30 04:33:35,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:33:35,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:33:35,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:33:35,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:33:35,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:33:35,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 359 [2023-08-30 04:33:35,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:35,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:33:35,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 359 [2023-08-30 04:33:35,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:33:35,251 INFO L130 PetriNetUnfolder]: 151/358 cut-off events. [2023-08-30 04:33:35,251 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 04:33:35,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 682 conditions, 358 events. 151/358 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1445 event pairs, 126 based on Foata normal form. 0/279 useless extension candidates. Maximal degree in co-relation 679. Up to 288 conditions per place. [2023-08-30 04:33:35,253 INFO L137 encePairwiseOnDemand]: 356/359 looper letters, 36 selfloop transitions, 1 changer transitions 7/49 dead transitions. [2023-08-30 04:33:35,254 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 49 transitions, 188 flow [2023-08-30 04:33:35,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:33:35,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:33:35,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 510 transitions. [2023-08-30 04:33:35,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4735376044568245 [2023-08-30 04:33:35,257 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 510 transitions. [2023-08-30 04:33:35,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 510 transitions. [2023-08-30 04:33:35,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:33:35,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 510 transitions. [2023-08-30 04:33:35,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:35,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:35,262 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:35,263 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 68 flow. Second operand 3 states and 510 transitions. [2023-08-30 04:33:35,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 49 transitions, 188 flow [2023-08-30 04:33:35,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 49 transitions, 188 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 04:33:35,264 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 71 flow [2023-08-30 04:33:35,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2023-08-30 04:33:35,265 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 1 predicate places. [2023-08-30 04:33:35,265 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 71 flow [2023-08-30 04:33:35,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:35,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:33:35,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 04:33:35,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 04:33:35,267 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-30 04:33:35,267 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:33:35,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1560783414, now seen corresponding path program 1 times [2023-08-30 04:33:35,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:33:35,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085565337] [2023-08-30 04:33:35,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:33:35,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:33:35,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:33:35,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:33:35,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:33:35,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085565337] [2023-08-30 04:33:35,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085565337] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:33:35,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:33:35,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 04:33:35,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377808320] [2023-08-30 04:33:35,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:33:35,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 04:33:35,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:33:35,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 04:33:35,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 04:33:35,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 359 [2023-08-30 04:33:35,528 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 155.5) internal successors, (622), 4 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:35,528 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:33:35,528 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 359 [2023-08-30 04:33:35,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:33:35,635 INFO L130 PetriNetUnfolder]: 139/367 cut-off events. [2023-08-30 04:33:35,635 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2023-08-30 04:33:35,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 701 conditions, 367 events. 139/367 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1585 event pairs, 16 based on Foata normal form. 0/318 useless extension candidates. Maximal degree in co-relation 696. Up to 210 conditions per place. [2023-08-30 04:33:35,637 INFO L137 encePairwiseOnDemand]: 353/359 looper letters, 47 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2023-08-30 04:33:35,637 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 58 transitions, 227 flow [2023-08-30 04:33:35,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 04:33:35,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 04:33:35,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 826 transitions. [2023-08-30 04:33:35,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46016713091922007 [2023-08-30 04:33:35,641 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 826 transitions. [2023-08-30 04:33:35,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 826 transitions. [2023-08-30 04:33:35,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:33:35,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 826 transitions. [2023-08-30 04:33:35,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 165.2) internal successors, (826), 5 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:35,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 359.0) internal successors, (2154), 6 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:35,648 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 359.0) internal successors, (2154), 6 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:35,648 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 71 flow. Second operand 5 states and 826 transitions. [2023-08-30 04:33:35,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 58 transitions, 227 flow [2023-08-30 04:33:35,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 58 transitions, 223 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 04:33:35,651 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 102 flow [2023-08-30 04:33:35,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2023-08-30 04:33:35,652 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 6 predicate places. [2023-08-30 04:33:35,652 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 102 flow [2023-08-30 04:33:35,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.5) internal successors, (622), 4 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:35,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:33:35,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:33:35,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 04:33:35,653 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-30 04:33:35,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:33:35,654 INFO L85 PathProgramCache]: Analyzing trace with hash -969308565, now seen corresponding path program 1 times [2023-08-30 04:33:35,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:33:35,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641868170] [2023-08-30 04:33:35,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:33:35,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:33:35,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:33:35,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:33:35,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:33:35,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641868170] [2023-08-30 04:33:35,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641868170] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:33:35,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:33:35,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 04:33:35,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199351098] [2023-08-30 04:33:35,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:33:35,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 04:33:35,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:33:35,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 04:33:35,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 04:33:35,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 359 [2023-08-30 04:33:35,951 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 102 flow. Second operand has 5 states, 5 states have (on average 152.6) internal successors, (763), 5 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:35,951 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:33:35,952 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 359 [2023-08-30 04:33:35,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:33:36,112 INFO L130 PetriNetUnfolder]: 169/449 cut-off events. [2023-08-30 04:33:36,113 INFO L131 PetriNetUnfolder]: For 64/64 co-relation queries the response was YES. [2023-08-30 04:33:36,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 953 conditions, 449 events. 169/449 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2163 event pairs, 56 based on Foata normal form. 0/401 useless extension candidates. Maximal degree in co-relation 946. Up to 201 conditions per place. [2023-08-30 04:33:36,115 INFO L137 encePairwiseOnDemand]: 353/359 looper letters, 57 selfloop transitions, 9 changer transitions 0/72 dead transitions. [2023-08-30 04:33:36,115 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 72 transitions, 316 flow [2023-08-30 04:33:36,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 04:33:36,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 04:33:36,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1277 transitions. [2023-08-30 04:33:36,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44463788300835655 [2023-08-30 04:33:36,119 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1277 transitions. [2023-08-30 04:33:36,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1277 transitions. [2023-08-30 04:33:36,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:33:36,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1277 transitions. [2023-08-30 04:33:36,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 159.625) internal successors, (1277), 8 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:36,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 359.0) internal successors, (3231), 9 states have internal predecessors, (3231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:36,129 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 359.0) internal successors, (3231), 9 states have internal predecessors, (3231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:36,129 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 102 flow. Second operand 8 states and 1277 transitions. [2023-08-30 04:33:36,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 72 transitions, 316 flow [2023-08-30 04:33:36,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 72 transitions, 312 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:33:36,131 INFO L231 Difference]: Finished difference. Result has 52 places, 39 transitions, 145 flow [2023-08-30 04:33:36,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=145, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2023-08-30 04:33:36,132 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 15 predicate places. [2023-08-30 04:33:36,132 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 145 flow [2023-08-30 04:33:36,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 152.6) internal successors, (763), 5 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:36,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:33:36,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:33:36,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 04:33:36,134 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-30 04:33:36,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:33:36,134 INFO L85 PathProgramCache]: Analyzing trace with hash 165120180, now seen corresponding path program 1 times [2023-08-30 04:33:36,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:33:36,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621308800] [2023-08-30 04:33:36,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:33:36,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:33:36,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:33:36,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:33:36,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:33:36,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621308800] [2023-08-30 04:33:36,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621308800] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:33:36,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:33:36,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 04:33:36,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069521951] [2023-08-30 04:33:36,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:33:36,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:33:36,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:33:36,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:33:36,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:33:36,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 359 [2023-08-30 04:33:36,236 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 145 flow. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:36,236 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:33:36,236 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 359 [2023-08-30 04:33:36,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:33:36,349 INFO L130 PetriNetUnfolder]: 186/486 cut-off events. [2023-08-30 04:33:36,349 INFO L131 PetriNetUnfolder]: For 175/175 co-relation queries the response was YES. [2023-08-30 04:33:36,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1127 conditions, 486 events. 186/486 cut-off events. For 175/175 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2396 event pairs, 75 based on Foata normal form. 16/457 useless extension candidates. Maximal degree in co-relation 1117. Up to 283 conditions per place. [2023-08-30 04:33:36,354 INFO L137 encePairwiseOnDemand]: 349/359 looper letters, 47 selfloop transitions, 10 changer transitions 0/60 dead transitions. [2023-08-30 04:33:36,355 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 60 transitions, 321 flow [2023-08-30 04:33:36,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:33:36,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:33:36,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 506 transitions. [2023-08-30 04:33:36,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46982358402971214 [2023-08-30 04:33:36,357 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 506 transitions. [2023-08-30 04:33:36,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 506 transitions. [2023-08-30 04:33:36,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:33:36,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 506 transitions. [2023-08-30 04:33:36,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:36,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:36,363 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:36,363 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 145 flow. Second operand 3 states and 506 transitions. [2023-08-30 04:33:36,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 60 transitions, 321 flow [2023-08-30 04:33:36,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 60 transitions, 289 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-08-30 04:33:36,368 INFO L231 Difference]: Finished difference. Result has 49 places, 43 transitions, 166 flow [2023-08-30 04:33:36,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=49, PETRI_TRANSITIONS=43} [2023-08-30 04:33:36,371 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 12 predicate places. [2023-08-30 04:33:36,371 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 43 transitions, 166 flow [2023-08-30 04:33:36,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:36,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:33:36,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:33:36,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 04:33:36,372 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-30 04:33:36,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:33:36,372 INFO L85 PathProgramCache]: Analyzing trace with hash 502413908, now seen corresponding path program 1 times [2023-08-30 04:33:36,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:33:36,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632959023] [2023-08-30 04:33:36,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:33:36,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:33:36,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:33:36,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:33:36,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:33:36,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632959023] [2023-08-30 04:33:36,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632959023] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:33:36,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:33:36,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 04:33:36,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57902754] [2023-08-30 04:33:36,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:33:36,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 04:33:36,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:33:36,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 04:33:36,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 04:33:36,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 359 [2023-08-30 04:33:36,614 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 166 flow. Second operand has 6 states, 6 states have (on average 152.66666666666666) internal successors, (916), 6 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:36,615 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:33:36,615 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 359 [2023-08-30 04:33:36,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:33:36,801 INFO L130 PetriNetUnfolder]: 189/517 cut-off events. [2023-08-30 04:33:36,804 INFO L131 PetriNetUnfolder]: For 125/125 co-relation queries the response was YES. [2023-08-30 04:33:36,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1381 conditions, 517 events. 189/517 cut-off events. For 125/125 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2725 event pairs, 69 based on Foata normal form. 0/476 useless extension candidates. Maximal degree in co-relation 1371. Up to 206 conditions per place. [2023-08-30 04:33:36,807 INFO L137 encePairwiseOnDemand]: 351/359 looper letters, 73 selfloop transitions, 10 changer transitions 1/91 dead transitions. [2023-08-30 04:33:36,807 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 91 transitions, 502 flow [2023-08-30 04:33:36,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 04:33:36,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 04:33:36,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1281 transitions. [2023-08-30 04:33:36,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44603064066852366 [2023-08-30 04:33:36,811 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1281 transitions. [2023-08-30 04:33:36,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1281 transitions. [2023-08-30 04:33:36,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:33:36,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1281 transitions. [2023-08-30 04:33:36,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 160.125) internal successors, (1281), 8 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:36,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 359.0) internal successors, (3231), 9 states have internal predecessors, (3231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:36,821 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 359.0) internal successors, (3231), 9 states have internal predecessors, (3231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:36,821 INFO L175 Difference]: Start difference. First operand has 49 places, 43 transitions, 166 flow. Second operand 8 states and 1281 transitions. [2023-08-30 04:33:36,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 91 transitions, 502 flow [2023-08-30 04:33:36,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 91 transitions, 478 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 04:33:36,826 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 215 flow [2023-08-30 04:33:36,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=215, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2023-08-30 04:33:36,828 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 21 predicate places. [2023-08-30 04:33:36,828 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 215 flow [2023-08-30 04:33:36,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 152.66666666666666) internal successors, (916), 6 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:36,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:33:36,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:33:36,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 04:33:36,830 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-30 04:33:36,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:33:36,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1608476393, now seen corresponding path program 1 times [2023-08-30 04:33:36,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:33:36,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631805399] [2023-08-30 04:33:36,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:33:36,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:33:36,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:33:36,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:33:36,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:33:36,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631805399] [2023-08-30 04:33:36,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631805399] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:33:36,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:33:36,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 04:33:36,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554380062] [2023-08-30 04:33:36,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:33:36,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 04:33:36,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:33:36,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 04:33:36,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 04:33:37,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 359 [2023-08-30 04:33:37,026 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 215 flow. Second operand has 5 states, 5 states have (on average 153.2) internal successors, (766), 5 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:37,026 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:33:37,026 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 359 [2023-08-30 04:33:37,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:33:37,193 INFO L130 PetriNetUnfolder]: 183/508 cut-off events. [2023-08-30 04:33:37,193 INFO L131 PetriNetUnfolder]: For 286/294 co-relation queries the response was YES. [2023-08-30 04:33:37,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1408 conditions, 508 events. 183/508 cut-off events. For 286/294 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2733 event pairs, 71 based on Foata normal form. 3/488 useless extension candidates. Maximal degree in co-relation 1395. Up to 284 conditions per place. [2023-08-30 04:33:37,196 INFO L137 encePairwiseOnDemand]: 353/359 looper letters, 65 selfloop transitions, 8 changer transitions 0/82 dead transitions. [2023-08-30 04:33:37,197 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 82 transitions, 482 flow [2023-08-30 04:33:37,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 04:33:37,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 04:33:37,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 814 transitions. [2023-08-30 04:33:37,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45348189415041784 [2023-08-30 04:33:37,199 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 814 transitions. [2023-08-30 04:33:37,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 814 transitions. [2023-08-30 04:33:37,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:33:37,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 814 transitions. [2023-08-30 04:33:37,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 162.8) internal successors, (814), 5 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:37,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 359.0) internal successors, (2154), 6 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:37,205 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 359.0) internal successors, (2154), 6 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:37,205 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 215 flow. Second operand 5 states and 814 transitions. [2023-08-30 04:33:37,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 82 transitions, 482 flow [2023-08-30 04:33:37,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 82 transitions, 476 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 04:33:37,208 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 243 flow [2023-08-30 04:33:37,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=243, PETRI_PLACES=62, PETRI_TRANSITIONS=51} [2023-08-30 04:33:37,209 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 25 predicate places. [2023-08-30 04:33:37,209 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 243 flow [2023-08-30 04:33:37,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 153.2) internal successors, (766), 5 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:37,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:33:37,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:33:37,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 04:33:37,210 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-30 04:33:37,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:33:37,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1931766655, now seen corresponding path program 1 times [2023-08-30 04:33:37,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:33:37,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497313363] [2023-08-30 04:33:37,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:33:37,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:33:37,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:33:37,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:33:37,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:33:37,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497313363] [2023-08-30 04:33:37,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497313363] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:33:37,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:33:37,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 04:33:37,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107278489] [2023-08-30 04:33:37,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:33:37,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 04:33:37,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:33:37,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 04:33:37,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 04:33:37,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 359 [2023-08-30 04:33:37,317 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 243 flow. Second operand has 5 states, 5 states have (on average 154.6) internal successors, (773), 5 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:37,318 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:33:37,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 359 [2023-08-30 04:33:37,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:33:37,470 INFO L130 PetriNetUnfolder]: 184/506 cut-off events. [2023-08-30 04:33:37,471 INFO L131 PetriNetUnfolder]: For 286/286 co-relation queries the response was YES. [2023-08-30 04:33:37,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1506 conditions, 506 events. 184/506 cut-off events. For 286/286 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2636 event pairs, 77 based on Foata normal form. 5/487 useless extension candidates. Maximal degree in co-relation 1490. Up to 205 conditions per place. [2023-08-30 04:33:37,474 INFO L137 encePairwiseOnDemand]: 352/359 looper letters, 72 selfloop transitions, 10 changer transitions 0/89 dead transitions. [2023-08-30 04:33:37,474 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 89 transitions, 552 flow [2023-08-30 04:33:37,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 04:33:37,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 04:33:37,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1132 transitions. [2023-08-30 04:33:37,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4504576203740549 [2023-08-30 04:33:37,478 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1132 transitions. [2023-08-30 04:33:37,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1132 transitions. [2023-08-30 04:33:37,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:33:37,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1132 transitions. [2023-08-30 04:33:37,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 161.71428571428572) internal successors, (1132), 7 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:37,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 359.0) internal successors, (2872), 8 states have internal predecessors, (2872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:37,485 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 359.0) internal successors, (2872), 8 states have internal predecessors, (2872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:37,485 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 243 flow. Second operand 7 states and 1132 transitions. [2023-08-30 04:33:37,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 89 transitions, 552 flow [2023-08-30 04:33:37,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 89 transitions, 537 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 04:33:37,490 INFO L231 Difference]: Finished difference. Result has 69 places, 55 transitions, 293 flow [2023-08-30 04:33:37,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=293, PETRI_PLACES=69, PETRI_TRANSITIONS=55} [2023-08-30 04:33:37,492 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 32 predicate places. [2023-08-30 04:33:37,492 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 293 flow [2023-08-30 04:33:37,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 154.6) internal successors, (773), 5 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:37,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:33:37,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:33:37,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 04:33:37,493 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-30 04:33:37,497 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:33:37,497 INFO L85 PathProgramCache]: Analyzing trace with hash -442446902, now seen corresponding path program 1 times [2023-08-30 04:33:37,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:33:37,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635081244] [2023-08-30 04:33:37,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:33:37,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:33:37,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:33:37,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:33:37,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:33:37,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635081244] [2023-08-30 04:33:37,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635081244] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:33:37,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:33:37,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 04:33:37,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629592258] [2023-08-30 04:33:37,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:33:37,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 04:33:37,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:33:37,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 04:33:37,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 04:33:37,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 359 [2023-08-30 04:33:37,801 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 55 transitions, 293 flow. Second operand has 6 states, 6 states have (on average 151.16666666666666) internal successors, (907), 6 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:37,801 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:33:37,801 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 359 [2023-08-30 04:33:37,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:33:37,907 INFO L130 PetriNetUnfolder]: 175/463 cut-off events. [2023-08-30 04:33:37,907 INFO L131 PetriNetUnfolder]: For 452/454 co-relation queries the response was YES. [2023-08-30 04:33:37,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1499 conditions, 463 events. 175/463 cut-off events. For 452/454 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2380 event pairs, 82 based on Foata normal form. 6/444 useless extension candidates. Maximal degree in co-relation 1480. Up to 215 conditions per place. [2023-08-30 04:33:37,911 INFO L137 encePairwiseOnDemand]: 354/359 looper letters, 55 selfloop transitions, 8 changer transitions 3/72 dead transitions. [2023-08-30 04:33:37,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 72 transitions, 508 flow [2023-08-30 04:33:37,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 04:33:37,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 04:33:37,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 640 transitions. [2023-08-30 04:33:37,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4456824512534819 [2023-08-30 04:33:37,913 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 640 transitions. [2023-08-30 04:33:37,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 640 transitions. [2023-08-30 04:33:37,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:33:37,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 640 transitions. [2023-08-30 04:33:37,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:37,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 359.0) internal successors, (1795), 5 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:37,918 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 359.0) internal successors, (1795), 5 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:37,918 INFO L175 Difference]: Start difference. First operand has 69 places, 55 transitions, 293 flow. Second operand 4 states and 640 transitions. [2023-08-30 04:33:37,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 72 transitions, 508 flow [2023-08-30 04:33:37,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 72 transitions, 500 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 04:33:37,922 INFO L231 Difference]: Finished difference. Result has 70 places, 53 transitions, 292 flow [2023-08-30 04:33:37,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=292, PETRI_PLACES=70, PETRI_TRANSITIONS=53} [2023-08-30 04:33:37,922 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 33 predicate places. [2023-08-30 04:33:37,923 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 53 transitions, 292 flow [2023-08-30 04:33:37,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 151.16666666666666) internal successors, (907), 6 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:37,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:33:37,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:33:37,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 04:33:37,924 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-30 04:33:37,924 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:33:37,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1888235010, now seen corresponding path program 1 times [2023-08-30 04:33:37,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:33:37,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490993483] [2023-08-30 04:33:37,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:33:37,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:33:37,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:33:37,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:33:37,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:33:37,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490993483] [2023-08-30 04:33:37,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490993483] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:33:37,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:33:37,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 04:33:37,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900495508] [2023-08-30 04:33:37,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:33:37,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 04:33:37,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:33:37,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 04:33:37,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 04:33:38,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 359 [2023-08-30 04:33:38,036 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 53 transitions, 292 flow. Second operand has 5 states, 5 states have (on average 154.4) internal successors, (772), 5 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:38,036 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:33:38,036 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 359 [2023-08-30 04:33:38,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:33:38,191 INFO L130 PetriNetUnfolder]: 148/416 cut-off events. [2023-08-30 04:33:38,191 INFO L131 PetriNetUnfolder]: For 390/392 co-relation queries the response was YES. [2023-08-30 04:33:38,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1344 conditions, 416 events. 148/416 cut-off events. For 390/392 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2039 event pairs, 23 based on Foata normal form. 10/414 useless extension candidates. Maximal degree in co-relation 1325. Up to 145 conditions per place. [2023-08-30 04:33:38,194 INFO L137 encePairwiseOnDemand]: 352/359 looper letters, 65 selfloop transitions, 8 changer transitions 1/84 dead transitions. [2023-08-30 04:33:38,194 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 84 transitions, 559 flow [2023-08-30 04:33:38,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 04:33:38,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 04:33:38,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1276 transitions. [2023-08-30 04:33:38,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44428969359331477 [2023-08-30 04:33:38,198 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1276 transitions. [2023-08-30 04:33:38,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1276 transitions. [2023-08-30 04:33:38,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:33:38,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1276 transitions. [2023-08-30 04:33:38,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 159.5) internal successors, (1276), 8 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:38,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 359.0) internal successors, (3231), 9 states have internal predecessors, (3231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:38,205 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 359.0) internal successors, (3231), 9 states have internal predecessors, (3231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:38,205 INFO L175 Difference]: Start difference. First operand has 70 places, 53 transitions, 292 flow. Second operand 8 states and 1276 transitions. [2023-08-30 04:33:38,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 84 transitions, 559 flow [2023-08-30 04:33:38,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 84 transitions, 543 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 04:33:38,209 INFO L231 Difference]: Finished difference. Result has 70 places, 51 transitions, 282 flow [2023-08-30 04:33:38,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=282, PETRI_PLACES=70, PETRI_TRANSITIONS=51} [2023-08-30 04:33:38,210 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 33 predicate places. [2023-08-30 04:33:38,210 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 51 transitions, 282 flow [2023-08-30 04:33:38,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 154.4) internal successors, (772), 5 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:38,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:33:38,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:33:38,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 04:33:38,211 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-30 04:33:38,211 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:33:38,212 INFO L85 PathProgramCache]: Analyzing trace with hash -916237437, now seen corresponding path program 1 times [2023-08-30 04:33:38,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:33:38,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090952064] [2023-08-30 04:33:38,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:33:38,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:33:38,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:33:38,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:33:38,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:33:38,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090952064] [2023-08-30 04:33:38,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090952064] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:33:38,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:33:38,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 04:33:38,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833234413] [2023-08-30 04:33:38,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:33:38,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 04:33:38,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:33:38,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 04:33:38,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 04:33:38,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 359 [2023-08-30 04:33:38,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 51 transitions, 282 flow. Second operand has 4 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:38,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:33:38,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 359 [2023-08-30 04:33:38,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:33:38,392 INFO L130 PetriNetUnfolder]: 148/397 cut-off events. [2023-08-30 04:33:38,392 INFO L131 PetriNetUnfolder]: For 499/509 co-relation queries the response was YES. [2023-08-30 04:33:38,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1323 conditions, 397 events. 148/397 cut-off events. For 499/509 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1900 event pairs, 76 based on Foata normal form. 3/384 useless extension candidates. Maximal degree in co-relation 1305. Up to 236 conditions per place. [2023-08-30 04:33:38,394 INFO L137 encePairwiseOnDemand]: 356/359 looper letters, 40 selfloop transitions, 3 changer transitions 14/65 dead transitions. [2023-08-30 04:33:38,395 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 65 transitions, 462 flow [2023-08-30 04:33:38,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 04:33:38,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 04:33:38,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 650 transitions. [2023-08-30 04:33:38,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45264623955431754 [2023-08-30 04:33:38,404 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 650 transitions. [2023-08-30 04:33:38,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 650 transitions. [2023-08-30 04:33:38,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:33:38,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 650 transitions. [2023-08-30 04:33:38,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 162.5) internal successors, (650), 4 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:38,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 359.0) internal successors, (1795), 5 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:38,408 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 359.0) internal successors, (1795), 5 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:38,408 INFO L175 Difference]: Start difference. First operand has 70 places, 51 transitions, 282 flow. Second operand 4 states and 650 transitions. [2023-08-30 04:33:38,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 65 transitions, 462 flow [2023-08-30 04:33:38,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 65 transitions, 435 flow, removed 4 selfloop flow, removed 7 redundant places. [2023-08-30 04:33:38,411 INFO L231 Difference]: Finished difference. Result has 65 places, 41 transitions, 228 flow [2023-08-30 04:33:38,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=228, PETRI_PLACES=65, PETRI_TRANSITIONS=41} [2023-08-30 04:33:38,412 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 28 predicate places. [2023-08-30 04:33:38,412 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 41 transitions, 228 flow [2023-08-30 04:33:38,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:38,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:33:38,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:33:38,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 04:33:38,413 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-30 04:33:38,414 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:33:38,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1158826975, now seen corresponding path program 1 times [2023-08-30 04:33:38,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:33:38,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239983242] [2023-08-30 04:33:38,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:33:38,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:33:38,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:33:38,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:33:38,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:33:38,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239983242] [2023-08-30 04:33:38,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239983242] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:33:38,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:33:38,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 04:33:38,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127454230] [2023-08-30 04:33:38,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:33:38,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 04:33:38,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:33:38,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 04:33:38,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 04:33:38,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 359 [2023-08-30 04:33:38,598 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 41 transitions, 228 flow. Second operand has 6 states, 6 states have (on average 152.33333333333334) internal successors, (914), 6 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:38,598 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:33:38,598 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 359 [2023-08-30 04:33:38,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:33:38,789 INFO L130 PetriNetUnfolder]: 55/182 cut-off events. [2023-08-30 04:33:38,789 INFO L131 PetriNetUnfolder]: For 206/206 co-relation queries the response was YES. [2023-08-30 04:33:38,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 621 conditions, 182 events. 55/182 cut-off events. For 206/206 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 682 event pairs, 9 based on Foata normal form. 8/189 useless extension candidates. Maximal degree in co-relation 605. Up to 53 conditions per place. [2023-08-30 04:33:38,791 INFO L137 encePairwiseOnDemand]: 352/359 looper letters, 42 selfloop transitions, 11 changer transitions 2/63 dead transitions. [2023-08-30 04:33:38,791 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 63 transitions, 443 flow [2023-08-30 04:33:38,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 04:33:38,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 04:33:38,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1849 transitions. [2023-08-30 04:33:38,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42920148560817084 [2023-08-30 04:33:38,796 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1849 transitions. [2023-08-30 04:33:38,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1849 transitions. [2023-08-30 04:33:38,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:33:38,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1849 transitions. [2023-08-30 04:33:38,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 154.08333333333334) internal successors, (1849), 12 states have internal predecessors, (1849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:38,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 359.0) internal successors, (4667), 13 states have internal predecessors, (4667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:38,807 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 359.0) internal successors, (4667), 13 states have internal predecessors, (4667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:38,807 INFO L175 Difference]: Start difference. First operand has 65 places, 41 transitions, 228 flow. Second operand 12 states and 1849 transitions. [2023-08-30 04:33:38,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 63 transitions, 443 flow [2023-08-30 04:33:38,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 63 transitions, 426 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 04:33:38,809 INFO L231 Difference]: Finished difference. Result has 68 places, 41 transitions, 239 flow [2023-08-30 04:33:38,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=239, PETRI_PLACES=68, PETRI_TRANSITIONS=41} [2023-08-30 04:33:38,810 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 31 predicate places. [2023-08-30 04:33:38,810 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 41 transitions, 239 flow [2023-08-30 04:33:38,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 152.33333333333334) internal successors, (914), 6 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:38,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:33:38,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:33:38,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 04:33:38,811 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-30 04:33:38,812 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:33:38,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1236151670, now seen corresponding path program 1 times [2023-08-30 04:33:38,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:33:38,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383627340] [2023-08-30 04:33:38,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:33:38,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:33:38,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:33:38,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:33:38,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:33:38,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383627340] [2023-08-30 04:33:38,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383627340] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:33:38,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:33:38,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 04:33:38,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705859066] [2023-08-30 04:33:38,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:33:38,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 04:33:38,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:33:38,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 04:33:38,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 04:33:38,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 359 [2023-08-30 04:33:38,941 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 41 transitions, 239 flow. Second operand has 4 states, 4 states have (on average 158.25) internal successors, (633), 4 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:38,941 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:33:38,941 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 359 [2023-08-30 04:33:38,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:33:39,020 INFO L130 PetriNetUnfolder]: 54/179 cut-off events. [2023-08-30 04:33:39,020 INFO L131 PetriNetUnfolder]: For 237/241 co-relation queries the response was YES. [2023-08-30 04:33:39,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 642 conditions, 179 events. 54/179 cut-off events. For 237/241 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 648 event pairs, 34 based on Foata normal form. 8/185 useless extension candidates. Maximal degree in co-relation 627. Up to 98 conditions per place. [2023-08-30 04:33:39,021 INFO L137 encePairwiseOnDemand]: 354/359 looper letters, 33 selfloop transitions, 10 changer transitions 7/55 dead transitions. [2023-08-30 04:33:39,021 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 55 transitions, 401 flow [2023-08-30 04:33:39,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 04:33:39,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 04:33:39,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 657 transitions. [2023-08-30 04:33:39,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4575208913649025 [2023-08-30 04:33:39,024 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 657 transitions. [2023-08-30 04:33:39,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 657 transitions. [2023-08-30 04:33:39,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:33:39,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 657 transitions. [2023-08-30 04:33:39,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 164.25) internal successors, (657), 4 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:39,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 359.0) internal successors, (1795), 5 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:39,028 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 359.0) internal successors, (1795), 5 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:39,028 INFO L175 Difference]: Start difference. First operand has 68 places, 41 transitions, 239 flow. Second operand 4 states and 657 transitions. [2023-08-30 04:33:39,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 55 transitions, 401 flow [2023-08-30 04:33:39,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 55 transitions, 376 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-08-30 04:33:39,031 INFO L231 Difference]: Finished difference. Result has 64 places, 40 transitions, 240 flow [2023-08-30 04:33:39,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=240, PETRI_PLACES=64, PETRI_TRANSITIONS=40} [2023-08-30 04:33:39,032 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 27 predicate places. [2023-08-30 04:33:39,032 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 40 transitions, 240 flow [2023-08-30 04:33:39,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 158.25) internal successors, (633), 4 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:39,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:33:39,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:33:39,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 04:33:39,033 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-30 04:33:39,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:33:39,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1763923622, now seen corresponding path program 1 times [2023-08-30 04:33:39,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 04:33:39,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666988733] [2023-08-30 04:33:39,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:33:39,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 04:33:39,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:33:39,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:33:39,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 04:33:39,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666988733] [2023-08-30 04:33:39,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666988733] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:33:39,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:33:39,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 04:33:39,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540365959] [2023-08-30 04:33:39,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:33:39,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 04:33:39,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 04:33:39,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 04:33:39,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 04:33:39,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 359 [2023-08-30 04:33:39,380 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 40 transitions, 240 flow. Second operand has 6 states, 6 states have (on average 152.33333333333334) internal successors, (914), 6 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:39,380 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:33:39,380 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 359 [2023-08-30 04:33:39,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:33:39,422 INFO L130 PetriNetUnfolder]: 22/95 cut-off events. [2023-08-30 04:33:39,422 INFO L131 PetriNetUnfolder]: For 151/151 co-relation queries the response was YES. [2023-08-30 04:33:39,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344 conditions, 95 events. 22/95 cut-off events. For 151/151 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 276 event pairs, 4 based on Foata normal form. 15/110 useless extension candidates. Maximal degree in co-relation 329. Up to 78 conditions per place. [2023-08-30 04:33:39,423 INFO L137 encePairwiseOnDemand]: 356/359 looper letters, 0 selfloop transitions, 0 changer transitions 42/42 dead transitions. [2023-08-30 04:33:39,423 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 42 transitions, 308 flow [2023-08-30 04:33:39,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 04:33:39,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 04:33:39,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 624 transitions. [2023-08-30 04:33:39,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43454038997214484 [2023-08-30 04:33:39,426 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 624 transitions. [2023-08-30 04:33:39,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 624 transitions. [2023-08-30 04:33:39,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:33:39,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 624 transitions. [2023-08-30 04:33:39,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:39,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 359.0) internal successors, (1795), 5 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:39,430 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 359.0) internal successors, (1795), 5 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:39,430 INFO L175 Difference]: Start difference. First operand has 64 places, 40 transitions, 240 flow. Second operand 4 states and 624 transitions. [2023-08-30 04:33:39,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 42 transitions, 308 flow [2023-08-30 04:33:39,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 42 transitions, 281 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-08-30 04:33:39,432 INFO L231 Difference]: Finished difference. Result has 55 places, 0 transitions, 0 flow [2023-08-30 04:33:39,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=55, PETRI_TRANSITIONS=0} [2023-08-30 04:33:39,433 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 18 predicate places. [2023-08-30 04:33:39,433 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 0 transitions, 0 flow [2023-08-30 04:33:39,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 152.33333333333334) internal successors, (914), 6 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:33:39,436 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (9 of 10 remaining) [2023-08-30 04:33:39,436 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2023-08-30 04:33:39,437 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2023-08-30 04:33:39,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 10 remaining) [2023-08-30 04:33:39,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 10 remaining) [2023-08-30 04:33:39,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONMEMORY_LEAK (4 of 10 remaining) [2023-08-30 04:33:39,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONMEMORY_LEAK (3 of 10 remaining) [2023-08-30 04:33:39,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 10 remaining) [2023-08-30 04:33:39,440 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONMEMORY_LEAK (1 of 10 remaining) [2023-08-30 04:33:39,440 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONMEMORY_LEAK (0 of 10 remaining) [2023-08-30 04:33:39,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 04:33:39,440 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:33:39,445 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 04:33:39,445 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 04:33:39,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 04:33:39 BasicIcfg [2023-08-30 04:33:39,448 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 04:33:39,449 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 04:33:39,449 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 04:33:39,449 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 04:33:39,450 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:33:29" (3/4) ... [2023-08-30 04:33:39,451 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 04:33:39,457 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-08-30 04:33:39,461 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-08-30 04:33:39,462 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-08-30 04:33:39,462 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-30 04:33:39,462 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 04:33:39,498 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 04:33:39,498 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 04:33:39,499 INFO L158 Benchmark]: Toolchain (without parser) took 11577.70ms. Allocated memory was 83.9MB in the beginning and 176.2MB in the end (delta: 92.3MB). Free memory was 61.9MB in the beginning and 103.5MB in the end (delta: -41.6MB). Peak memory consumption was 50.2MB. Max. memory is 16.1GB. [2023-08-30 04:33:39,499 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 62.9MB. Free memory is still 40.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 04:33:39,499 INFO L158 Benchmark]: CACSL2BoogieTranslator took 527.89ms. Allocated memory is still 83.9MB. Free memory was 61.6MB in the beginning and 62.2MB in the end (delta: -589.2kB). Peak memory consumption was 23.5MB. Max. memory is 16.1GB. [2023-08-30 04:33:39,500 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.17ms. Allocated memory is still 83.9MB. Free memory was 62.2MB in the beginning and 59.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 04:33:39,500 INFO L158 Benchmark]: Boogie Preprocessor took 24.14ms. Allocated memory is still 83.9MB. Free memory was 59.7MB in the beginning and 58.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 04:33:39,500 INFO L158 Benchmark]: RCFGBuilder took 550.01ms. Allocated memory is still 83.9MB. Free memory was 58.1MB in the beginning and 40.4MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-08-30 04:33:39,501 INFO L158 Benchmark]: TraceAbstraction took 10381.13ms. Allocated memory was 83.9MB in the beginning and 176.2MB in the end (delta: 92.3MB). Free memory was 39.6MB in the beginning and 106.6MB in the end (delta: -67.0MB). Peak memory consumption was 24.6MB. Max. memory is 16.1GB. [2023-08-30 04:33:39,501 INFO L158 Benchmark]: Witness Printer took 49.43ms. Allocated memory is still 176.2MB. Free memory was 106.6MB in the beginning and 103.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 04:33:39,502 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 62.9MB. Free memory is still 40.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 527.89ms. Allocated memory is still 83.9MB. Free memory was 61.6MB in the beginning and 62.2MB in the end (delta: -589.2kB). Peak memory consumption was 23.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.17ms. Allocated memory is still 83.9MB. Free memory was 62.2MB in the beginning and 59.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.14ms. Allocated memory is still 83.9MB. Free memory was 59.7MB in the beginning and 58.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 550.01ms. Allocated memory is still 83.9MB. Free memory was 58.1MB in the beginning and 40.4MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 10381.13ms. Allocated memory was 83.9MB in the beginning and 176.2MB in the end (delta: 92.3MB). Free memory was 39.6MB in the beginning and 106.6MB in the end (delta: -67.0MB). Peak memory consumption was 24.6MB. Max. memory is 16.1GB. * Witness Printer took 49.43ms. Allocated memory is still 176.2MB. Free memory was 106.6MB in the beginning and 103.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.3s, 166 PlacesBefore, 37 PlacesAfterwards, 171 TransitionsBefore, 37 TransitionsAfterwards, 7296 CoEnabledTransitionPairs, 7 FixpointIterations, 58 TrivialSequentialCompositions, 98 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 26 ConcurrentYvCompositions, 5 ChoiceCompositions, 187 TotalNumberOfCompositions, 13032 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6973, independent: 6646, independent conditional: 0, independent unconditional: 6646, dependent: 327, dependent conditional: 0, dependent unconditional: 327, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4100, independent: 4025, independent conditional: 0, independent unconditional: 4025, dependent: 75, dependent conditional: 0, dependent unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6973, independent: 2621, independent conditional: 0, independent unconditional: 2621, dependent: 252, dependent conditional: 0, dependent unconditional: 252, unknown: 4100, unknown conditional: 0, unknown unconditional: 4100] , Statistics on independence cache: Total cache size (in pairs): 109, Positive cache size: 83, Positive conditional cache size: 0, Positive unconditional cache size: 83, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 730]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 236 locations, 10 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 10.2s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1272 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 926 mSDsluCounter, 293 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 171 mSDsCounter, 114 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2150 IncrementalHoareTripleChecker+Invalid, 2264 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 114 mSolverCounterUnsat, 122 mSDtfsCounter, 2150 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=293occurred in iteration=8, InterpolantAutomatonStates: 77, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 167 NumberOfCodeBlocks, 167 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 153 ConstructedInterpolants, 0 QuantifiedInterpolants, 824 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 04:33:39,535 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE