./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --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/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.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 33fa46fe030c661ecf8ddae0fe7d2b7598ab4fcf90a09fe31211d00189cd239f --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 20:51:44,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 20:51:44,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 20:51:44,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 20:51:44,489 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 20:51:44,492 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 20:51:44,493 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 20:51:44,496 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 20:51:44,498 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 20:51:44,501 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 20:51:44,502 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 20:51:44,504 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 20:51:44,505 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 20:51:44,510 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 20:51:44,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 20:51:44,513 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 20:51:44,516 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 20:51:44,516 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 20:51:44,518 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 20:51:44,520 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 20:51:44,524 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 20:51:44,528 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 20:51:44,529 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 20:51:44,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 20:51:44,541 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 20:51:44,543 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 20:51:44,543 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 20:51:44,544 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 20:51:44,545 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 20:51:44,546 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 20:51:44,547 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 20:51:44,548 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 20:51:44,548 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 20:51:44,549 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 20:51:44,551 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 20:51:44,551 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 20:51:44,552 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 20:51:44,552 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 20:51:44,552 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 20:51:44,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 20:51:44,554 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 20:51:44,555 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 20:51:44,591 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 20:51:44,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 20:51:44,593 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 20:51:44,593 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 20:51:44,594 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 20:51:44,594 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 20:51:44,595 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 20:51:44,595 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 20:51:44,595 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 20:51:44,595 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 20:51:44,596 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 20:51:44,596 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 20:51:44,597 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 20:51:44,597 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 20:51:44,597 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 20:51:44,597 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 20:51:44,597 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 20:51:44,598 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 20:51:44,598 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 20:51:44,598 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 20:51:44,598 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 20:51:44,598 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 20:51:44,599 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 20:51:44,599 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 20:51:44,599 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 20:51:44,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:51:44,599 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 20:51:44,600 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 20:51:44,600 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 20:51:44,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 20:51:44,600 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 20:51:44,600 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 20:51:44,601 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 20:51:44,601 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 20:51:44,601 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 33fa46fe030c661ecf8ddae0fe7d2b7598ab4fcf90a09fe31211d00189cd239f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 20:51:44,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 20:51:44,941 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 20:51:44,943 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 20:51:44,944 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 20:51:44,944 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 20:51:44,945 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-29 20:51:46,032 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 20:51:46,344 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 20:51:46,347 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-29 20:51:46,370 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18786bafd/f8800eef15464861804d52a7211deca7/FLAG7d4f71d99 [2023-08-29 20:51:46,386 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18786bafd/f8800eef15464861804d52a7211deca7 [2023-08-29 20:51:46,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 20:51:46,390 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 20:51:46,391 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 20:51:46,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 20:51:46,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 20:51:46,394 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:51:46" (1/1) ... [2023-08-29 20:51:46,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76e9fa3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:46, skipping insertion in model container [2023-08-29 20:51:46,397 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:51:46" (1/1) ... [2023-08-29 20:51:46,402 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 20:51:46,454 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 20:51:46,622 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-08-29 20:51:46,809 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:51:46,819 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 20:51:46,838 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-08-29 20:51:46,887 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:51:46,947 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:51:46,947 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:51:46,955 INFO L208 MainTranslator]: Completed translation [2023-08-29 20:51:46,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:46 WrapperNode [2023-08-29 20:51:46,956 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 20:51:46,957 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 20:51:46,957 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 20:51:46,957 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 20:51:46,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:46" (1/1) ... [2023-08-29 20:51:46,991 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:46" (1/1) ... [2023-08-29 20:51:47,016 INFO L138 Inliner]: procedures = 177, calls = 66, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 85 [2023-08-29 20:51:47,017 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 20:51:47,017 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 20:51:47,017 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 20:51:47,018 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 20:51:47,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:46" (1/1) ... [2023-08-29 20:51:47,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:46" (1/1) ... [2023-08-29 20:51:47,041 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:46" (1/1) ... [2023-08-29 20:51:47,042 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:46" (1/1) ... [2023-08-29 20:51:47,046 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:46" (1/1) ... [2023-08-29 20:51:47,054 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:46" (1/1) ... [2023-08-29 20:51:47,056 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:46" (1/1) ... [2023-08-29 20:51:47,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:46" (1/1) ... [2023-08-29 20:51:47,063 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 20:51:47,067 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 20:51:47,068 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 20:51:47,068 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 20:51:47,068 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:46" (1/1) ... [2023-08-29 20:51:47,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:51:47,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 20:51:47,099 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) [2023-08-29 20:51:47,110 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 [2023-08-29 20:51:47,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 20:51:47,143 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-29 20:51:47,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 20:51:47,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 20:51:47,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 20:51:47,144 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-29 20:51:47,144 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-29 20:51:47,144 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-29 20:51:47,144 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-29 20:51:47,144 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-29 20:51:47,144 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-29 20:51:47,145 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-29 20:51:47,145 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-29 20:51:47,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 20:51:47,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-29 20:51:47,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 20:51:47,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 20:51:47,146 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 20:51:47,274 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 20:51:47,276 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 20:51:47,530 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 20:51:47,536 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 20:51:47,538 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 20:51:47,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:51:47 BoogieIcfgContainer [2023-08-29 20:51:47,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 20:51:47,551 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 20:51:47,551 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 20:51:47,554 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 20:51:47,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 08:51:46" (1/3) ... [2023-08-29 20:51:47,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a268f0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:51:47, skipping insertion in model container [2023-08-29 20:51:47,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:46" (2/3) ... [2023-08-29 20:51:47,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a268f0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:51:47, skipping insertion in model container [2023-08-29 20:51:47,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:51:47" (3/3) ... [2023-08-29 20:51:47,556 INFO L112 eAbstractionObserver]: Analyzing ICFG thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-29 20:51:47,571 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 20:51:47,572 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-29 20:51:47,572 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 20:51:47,671 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 20:51:47,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 116 transitions, 252 flow [2023-08-29 20:51:47,784 INFO L130 PetriNetUnfolder]: 2/112 cut-off events. [2023-08-29 20:51:47,786 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:51:47,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 112 events. 2/112 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 91 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 90. Up to 2 conditions per place. [2023-08-29 20:51:47,791 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 116 transitions, 252 flow [2023-08-29 20:51:47,795 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 108 transitions, 228 flow [2023-08-29 20:51:47,799 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 20:51:47,811 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 119 places, 108 transitions, 228 flow [2023-08-29 20:51:47,815 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 119 places, 108 transitions, 228 flow [2023-08-29 20:51:47,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 108 transitions, 228 flow [2023-08-29 20:51:47,861 INFO L130 PetriNetUnfolder]: 2/108 cut-off events. [2023-08-29 20:51:47,862 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:51:47,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 108 events. 2/108 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 90 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 86. Up to 2 conditions per place. [2023-08-29 20:51:47,870 INFO L119 LiptonReduction]: Number of co-enabled transitions 2472 [2023-08-29 20:51:50,961 INFO L134 LiptonReduction]: Checked pairs total: 4571 [2023-08-29 20:51:50,962 INFO L136 LiptonReduction]: Total number of compositions: 110 [2023-08-29 20:51:50,980 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 20:51:50,987 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;@76efc727, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 20:51:50,987 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-08-29 20:51:50,988 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 20:51:50,989 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:51:50,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:51:50,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 20:51:50,990 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-29 20:51:50,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:51:50,994 INFO L85 PathProgramCache]: Analyzing trace with hash 405, now seen corresponding path program 1 times [2023-08-29 20:51:51,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:51:51,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777955659] [2023-08-29 20:51:51,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:51:51,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:51:51,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:51:51,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:51:51,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:51:51,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777955659] [2023-08-29 20:51:51,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777955659] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:51:51,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:51:51,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 20:51:51,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304029997] [2023-08-29 20:51:51,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:51:51,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 20:51:51,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:51:51,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 20:51:51,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 20:51:51,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 226 [2023-08-29 20:51:51,123 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 33 transitions, 78 flow. Second operand has 2 states, 2 states have (on average 109.5) internal successors, (219), 2 states have internal predecessors, (219), 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) [2023-08-29 20:51:51,124 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:51:51,124 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 226 [2023-08-29 20:51:51,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:51:51,377 INFO L130 PetriNetUnfolder]: 1136/1673 cut-off events. [2023-08-29 20:51:51,377 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2023-08-29 20:51:51,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3379 conditions, 1673 events. 1136/1673 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 7981 event pairs, 1136 based on Foata normal form. 0/1552 useless extension candidates. Maximal degree in co-relation 3367. Up to 1621 conditions per place. [2023-08-29 20:51:51,397 INFO L137 encePairwiseOnDemand]: 217/226 looper letters, 20 selfloop transitions, 0 changer transitions 0/24 dead transitions. [2023-08-29 20:51:51,397 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 24 transitions, 100 flow [2023-08-29 20:51:51,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 20:51:51,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 20:51:51,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 247 transitions. [2023-08-29 20:51:51,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5464601769911505 [2023-08-29 20:51:51,414 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 247 transitions. [2023-08-29 20:51:51,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 247 transitions. [2023-08-29 20:51:51,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:51:51,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 247 transitions. [2023-08-29 20:51:51,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 123.5) internal successors, (247), 2 states have internal predecessors, (247), 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) [2023-08-29 20:51:51,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 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) [2023-08-29 20:51:51,430 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 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) [2023-08-29 20:51:51,432 INFO L175 Difference]: Start difference. First operand has 45 places, 33 transitions, 78 flow. Second operand 2 states and 247 transitions. [2023-08-29 20:51:51,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 24 transitions, 100 flow [2023-08-29 20:51:51,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 24 transitions, 96 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-29 20:51:51,438 INFO L231 Difference]: Finished difference. Result has 34 places, 24 transitions, 56 flow [2023-08-29 20:51:51,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=56, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2023-08-29 20:51:51,444 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -11 predicate places. [2023-08-29 20:51:51,444 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 56 flow [2023-08-29 20:51:51,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 109.5) internal successors, (219), 2 states have internal predecessors, (219), 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) [2023-08-29 20:51:51,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:51:51,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:51:51,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 20:51:51,448 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-29 20:51:51,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:51:51,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1056542936, now seen corresponding path program 1 times [2023-08-29 20:51:51,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:51:51,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872752497] [2023-08-29 20:51:51,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:51:51,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:51:51,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:51:52,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:51:52,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:51:52,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872752497] [2023-08-29 20:51:52,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872752497] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:51:52,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:51:52,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 20:51:52,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920507579] [2023-08-29 20:51:52,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:51:52,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 20:51:52,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:51:52,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 20:51:52,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-29 20:51:52,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 226 [2023-08-29 20:51:52,573 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 56 flow. Second operand has 7 states, 7 states have (on average 92.57142857142857) internal successors, (648), 7 states have internal predecessors, (648), 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) [2023-08-29 20:51:52,573 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:51:52,573 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 226 [2023-08-29 20:51:52,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:51:52,888 INFO L130 PetriNetUnfolder]: 1574/2394 cut-off events. [2023-08-29 20:51:52,888 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:51:52,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4778 conditions, 2394 events. 1574/2394 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 13122 event pairs, 582 based on Foata normal form. 0/2313 useless extension candidates. Maximal degree in co-relation 4775. Up to 1043 conditions per place. [2023-08-29 20:51:52,901 INFO L137 encePairwiseOnDemand]: 220/226 looper letters, 47 selfloop transitions, 8 changer transitions 0/59 dead transitions. [2023-08-29 20:51:52,901 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 59 transitions, 244 flow [2023-08-29 20:51:52,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 20:51:52,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 20:51:52,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 694 transitions. [2023-08-29 20:51:52,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.438685208596713 [2023-08-29 20:51:52,905 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 694 transitions. [2023-08-29 20:51:52,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 694 transitions. [2023-08-29 20:51:52,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:51:52,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 694 transitions. [2023-08-29 20:51:52,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 99.14285714285714) internal successors, (694), 7 states have internal predecessors, (694), 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) [2023-08-29 20:51:52,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 226.0) internal successors, (1808), 8 states have internal predecessors, (1808), 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) [2023-08-29 20:51:52,912 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 226.0) internal successors, (1808), 8 states have internal predecessors, (1808), 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) [2023-08-29 20:51:52,912 INFO L175 Difference]: Start difference. First operand has 34 places, 24 transitions, 56 flow. Second operand 7 states and 694 transitions. [2023-08-29 20:51:52,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 59 transitions, 244 flow [2023-08-29 20:51:52,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 59 transitions, 244 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 20:51:52,914 INFO L231 Difference]: Finished difference. Result has 45 places, 30 transitions, 106 flow [2023-08-29 20:51:52,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=106, PETRI_PLACES=45, PETRI_TRANSITIONS=30} [2023-08-29 20:51:52,915 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 0 predicate places. [2023-08-29 20:51:52,915 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 30 transitions, 106 flow [2023-08-29 20:51:52,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 92.57142857142857) internal successors, (648), 7 states have internal predecessors, (648), 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) [2023-08-29 20:51:52,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:51:52,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:51:52,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 20:51:52,916 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-29 20:51:52,917 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:51:52,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1056542973, now seen corresponding path program 1 times [2023-08-29 20:51:52,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:51:52,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553873590] [2023-08-29 20:51:52,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:51:52,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:51:52,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:51:53,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:51:53,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:51:53,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553873590] [2023-08-29 20:51:53,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553873590] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:51:53,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:51:53,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 20:51:53,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011256130] [2023-08-29 20:51:53,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:51:53,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 20:51:53,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:51:53,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 20:51:53,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 20:51:53,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 226 [2023-08-29 20:51:53,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 30 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 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) [2023-08-29 20:51:53,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:51:53,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 226 [2023-08-29 20:51:53,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:51:53,424 INFO L130 PetriNetUnfolder]: 1702/2646 cut-off events. [2023-08-29 20:51:53,424 INFO L131 PetriNetUnfolder]: For 542/542 co-relation queries the response was YES. [2023-08-29 20:51:53,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5722 conditions, 2646 events. 1702/2646 cut-off events. For 542/542 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 15327 event pairs, 1241 based on Foata normal form. 81/2708 useless extension candidates. Maximal degree in co-relation 5713. Up to 2058 conditions per place. [2023-08-29 20:51:53,439 INFO L137 encePairwiseOnDemand]: 218/226 looper letters, 36 selfloop transitions, 9 changer transitions 6/55 dead transitions. [2023-08-29 20:51:53,440 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 55 transitions, 290 flow [2023-08-29 20:51:53,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 20:51:53,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 20:51:53,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 546 transitions. [2023-08-29 20:51:53,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4831858407079646 [2023-08-29 20:51:53,442 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 546 transitions. [2023-08-29 20:51:53,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 546 transitions. [2023-08-29 20:51:53,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:51:53,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 546 transitions. [2023-08-29 20:51:53,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.2) internal successors, (546), 5 states have internal predecessors, (546), 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) [2023-08-29 20:51:53,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 226.0) internal successors, (1356), 6 states have internal predecessors, (1356), 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) [2023-08-29 20:51:53,447 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 226.0) internal successors, (1356), 6 states have internal predecessors, (1356), 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) [2023-08-29 20:51:53,447 INFO L175 Difference]: Start difference. First operand has 45 places, 30 transitions, 106 flow. Second operand 5 states and 546 transitions. [2023-08-29 20:51:53,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 55 transitions, 290 flow [2023-08-29 20:51:53,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 55 transitions, 284 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 20:51:53,451 INFO L231 Difference]: Finished difference. Result has 51 places, 36 transitions, 175 flow [2023-08-29 20:51:53,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=175, PETRI_PLACES=51, PETRI_TRANSITIONS=36} [2023-08-29 20:51:53,452 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 6 predicate places. [2023-08-29 20:51:53,455 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 36 transitions, 175 flow [2023-08-29 20:51:53,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 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) [2023-08-29 20:51:53,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:51:53,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:51:53,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 20:51:53,456 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-29 20:51:53,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:51:53,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1129844697, now seen corresponding path program 1 times [2023-08-29 20:51:53,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:51:53,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773012270] [2023-08-29 20:51:53,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:51:53,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:51:53,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:51:53,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:51:53,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:51:53,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773012270] [2023-08-29 20:51:53,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773012270] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:51:53,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:51:53,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:51:53,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910069516] [2023-08-29 20:51:53,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:51:53,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:51:53,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:51:53,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:51:53,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:51:53,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 226 [2023-08-29 20:51:53,656 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 36 transitions, 175 flow. Second operand has 5 states, 5 states have (on average 102.4) internal successors, (512), 5 states have internal predecessors, (512), 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) [2023-08-29 20:51:53,659 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:51:53,659 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 226 [2023-08-29 20:51:53,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:51:53,947 INFO L130 PetriNetUnfolder]: 1598/2535 cut-off events. [2023-08-29 20:51:53,948 INFO L131 PetriNetUnfolder]: For 2927/2927 co-relation queries the response was YES. [2023-08-29 20:51:53,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7415 conditions, 2535 events. 1598/2535 cut-off events. For 2927/2927 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 15025 event pairs, 294 based on Foata normal form. 132/2663 useless extension candidates. Maximal degree in co-relation 7403. Up to 1395 conditions per place. [2023-08-29 20:51:53,966 INFO L137 encePairwiseOnDemand]: 221/226 looper letters, 52 selfloop transitions, 6 changer transitions 2/64 dead transitions. [2023-08-29 20:51:53,967 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 64 transitions, 431 flow [2023-08-29 20:51:53,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 20:51:53,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 20:51:53,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 548 transitions. [2023-08-29 20:51:53,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4849557522123894 [2023-08-29 20:51:53,970 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 548 transitions. [2023-08-29 20:51:53,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 548 transitions. [2023-08-29 20:51:53,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:51:53,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 548 transitions. [2023-08-29 20:51:53,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 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) [2023-08-29 20:51:53,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 226.0) internal successors, (1356), 6 states have internal predecessors, (1356), 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) [2023-08-29 20:51:53,975 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 226.0) internal successors, (1356), 6 states have internal predecessors, (1356), 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) [2023-08-29 20:51:53,975 INFO L175 Difference]: Start difference. First operand has 51 places, 36 transitions, 175 flow. Second operand 5 states and 548 transitions. [2023-08-29 20:51:53,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 64 transitions, 431 flow [2023-08-29 20:51:53,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 64 transitions, 415 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-29 20:51:53,993 INFO L231 Difference]: Finished difference. Result has 56 places, 39 transitions, 212 flow [2023-08-29 20:51:53,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=212, PETRI_PLACES=56, PETRI_TRANSITIONS=39} [2023-08-29 20:51:53,995 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 11 predicate places. [2023-08-29 20:51:53,995 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 39 transitions, 212 flow [2023-08-29 20:51:53,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 102.4) internal successors, (512), 5 states have internal predecessors, (512), 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) [2023-08-29 20:51:53,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:51:53,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:51:53,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 20:51:53,996 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-29 20:51:53,996 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:51:53,996 INFO L85 PathProgramCache]: Analyzing trace with hash -578860202, now seen corresponding path program 1 times [2023-08-29 20:51:53,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:51:53,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903405193] [2023-08-29 20:51:53,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:51:53,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:51:54,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:51:54,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:51:54,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:51:54,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903405193] [2023-08-29 20:51:54,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903405193] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:51:54,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:51:54,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-29 20:51:54,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363438076] [2023-08-29 20:51:54,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:51:54,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-29 20:51:54,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:51:54,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-29 20:51:54,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-29 20:51:54,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 226 [2023-08-29 20:51:54,696 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 39 transitions, 212 flow. Second operand has 8 states, 8 states have (on average 89.5) internal successors, (716), 8 states have internal predecessors, (716), 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) [2023-08-29 20:51:54,696 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:51:54,696 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 226 [2023-08-29 20:51:54,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:51:55,256 INFO L130 PetriNetUnfolder]: 2899/4332 cut-off events. [2023-08-29 20:51:55,257 INFO L131 PetriNetUnfolder]: For 7688/7688 co-relation queries the response was YES. [2023-08-29 20:51:55,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13767 conditions, 4332 events. 2899/4332 cut-off events. For 7688/7688 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 25758 event pairs, 1587 based on Foata normal form. 120/4445 useless extension candidates. Maximal degree in co-relation 13753. Up to 3071 conditions per place. [2023-08-29 20:51:55,289 INFO L137 encePairwiseOnDemand]: 220/226 looper letters, 56 selfloop transitions, 9 changer transitions 2/70 dead transitions. [2023-08-29 20:51:55,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 70 transitions, 480 flow [2023-08-29 20:51:55,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 20:51:55,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 20:51:55,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 668 transitions. [2023-08-29 20:51:55,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222503160556258 [2023-08-29 20:51:55,292 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 668 transitions. [2023-08-29 20:51:55,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 668 transitions. [2023-08-29 20:51:55,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:51:55,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 668 transitions. [2023-08-29 20:51:55,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 95.42857142857143) internal successors, (668), 7 states have internal predecessors, (668), 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) [2023-08-29 20:51:55,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 226.0) internal successors, (1808), 8 states have internal predecessors, (1808), 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) [2023-08-29 20:51:55,297 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 226.0) internal successors, (1808), 8 states have internal predecessors, (1808), 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) [2023-08-29 20:51:55,297 INFO L175 Difference]: Start difference. First operand has 56 places, 39 transitions, 212 flow. Second operand 7 states and 668 transitions. [2023-08-29 20:51:55,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 70 transitions, 480 flow [2023-08-29 20:51:55,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 70 transitions, 480 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 20:51:55,326 INFO L231 Difference]: Finished difference. Result has 64 places, 41 transitions, 247 flow [2023-08-29 20:51:55,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=247, PETRI_PLACES=64, PETRI_TRANSITIONS=41} [2023-08-29 20:51:55,327 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 19 predicate places. [2023-08-29 20:51:55,327 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 41 transitions, 247 flow [2023-08-29 20:51:55,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 89.5) internal successors, (716), 8 states have internal predecessors, (716), 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) [2023-08-29 20:51:55,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:51:55,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:51:55,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 20:51:55,329 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-29 20:51:55,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:51:55,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1195155769, now seen corresponding path program 1 times [2023-08-29 20:51:55,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:51:55,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350119819] [2023-08-29 20:51:55,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:51:55,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:51:55,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:51:55,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:51:55,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:51:55,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350119819] [2023-08-29 20:51:55,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350119819] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:51:55,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:51:55,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-29 20:51:55,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544429473] [2023-08-29 20:51:55,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:51:55,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-29 20:51:55,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:51:55,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-29 20:51:55,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-29 20:51:56,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 226 [2023-08-29 20:51:56,061 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 41 transitions, 247 flow. Second operand has 8 states, 8 states have (on average 88.625) internal successors, (709), 8 states have internal predecessors, (709), 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) [2023-08-29 20:51:56,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:51:56,061 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 226 [2023-08-29 20:51:56,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:51:56,748 INFO L130 PetriNetUnfolder]: 3408/5150 cut-off events. [2023-08-29 20:51:56,749 INFO L131 PetriNetUnfolder]: For 9834/9834 co-relation queries the response was YES. [2023-08-29 20:51:56,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15872 conditions, 5150 events. 3408/5150 cut-off events. For 9834/9834 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 32269 event pairs, 1122 based on Foata normal form. 240/5389 useless extension candidates. Maximal degree in co-relation 15855. Up to 3731 conditions per place. [2023-08-29 20:51:56,797 INFO L137 encePairwiseOnDemand]: 220/226 looper letters, 53 selfloop transitions, 12 changer transitions 4/72 dead transitions. [2023-08-29 20:51:56,798 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 72 transitions, 513 flow [2023-08-29 20:51:56,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 20:51:56,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 20:51:56,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 749 transitions. [2023-08-29 20:51:56,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41426991150442477 [2023-08-29 20:51:56,801 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 749 transitions. [2023-08-29 20:51:56,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 749 transitions. [2023-08-29 20:51:56,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:51:56,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 749 transitions. [2023-08-29 20:51:56,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 93.625) internal successors, (749), 8 states have internal predecessors, (749), 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) [2023-08-29 20:51:56,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 226.0) internal successors, (2034), 9 states have internal predecessors, (2034), 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) [2023-08-29 20:51:56,807 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 226.0) internal successors, (2034), 9 states have internal predecessors, (2034), 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) [2023-08-29 20:51:56,807 INFO L175 Difference]: Start difference. First operand has 64 places, 41 transitions, 247 flow. Second operand 8 states and 749 transitions. [2023-08-29 20:51:56,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 72 transitions, 513 flow [2023-08-29 20:51:56,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 72 transitions, 483 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-08-29 20:51:56,827 INFO L231 Difference]: Finished difference. Result has 62 places, 38 transitions, 213 flow [2023-08-29 20:51:56,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=213, PETRI_PLACES=62, PETRI_TRANSITIONS=38} [2023-08-29 20:51:56,830 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 17 predicate places. [2023-08-29 20:51:56,830 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 38 transitions, 213 flow [2023-08-29 20:51:56,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 88.625) internal successors, (709), 8 states have internal predecessors, (709), 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) [2023-08-29 20:51:56,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:51:56,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:51:56,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 20:51:56,831 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-29 20:51:56,832 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:51:56,832 INFO L85 PathProgramCache]: Analyzing trace with hash -113789158, now seen corresponding path program 1 times [2023-08-29 20:51:56,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:51:56,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540320105] [2023-08-29 20:51:56,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:51:56,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:51:56,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:51:56,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:51:56,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:51:56,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540320105] [2023-08-29 20:51:56,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540320105] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:51:56,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:51:56,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:51:56,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069434078] [2023-08-29 20:51:56,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:51:56,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:51:56,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:51:56,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:51:56,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:51:57,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 226 [2023-08-29 20:51:57,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 38 transitions, 213 flow. Second operand has 5 states, 5 states have (on average 100.4) internal successors, (502), 5 states have internal predecessors, (502), 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) [2023-08-29 20:51:57,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:51:57,015 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 226 [2023-08-29 20:51:57,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:51:57,750 INFO L130 PetriNetUnfolder]: 4655/7201 cut-off events. [2023-08-29 20:51:57,750 INFO L131 PetriNetUnfolder]: For 8643/8643 co-relation queries the response was YES. [2023-08-29 20:51:57,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20210 conditions, 7201 events. 4655/7201 cut-off events. For 8643/8643 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 50015 event pairs, 844 based on Foata normal form. 418/7611 useless extension candidates. Maximal degree in co-relation 20197. Up to 2379 conditions per place. [2023-08-29 20:51:57,796 INFO L137 encePairwiseOnDemand]: 218/226 looper letters, 68 selfloop transitions, 17 changer transitions 28/116 dead transitions. [2023-08-29 20:51:57,796 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 116 transitions, 827 flow [2023-08-29 20:51:57,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-29 20:51:57,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-29 20:51:57,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 971 transitions. [2023-08-29 20:51:57,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4773844641101278 [2023-08-29 20:51:57,799 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 971 transitions. [2023-08-29 20:51:57,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 971 transitions. [2023-08-29 20:51:57,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:51:57,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 971 transitions. [2023-08-29 20:51:57,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 107.88888888888889) internal successors, (971), 9 states have internal predecessors, (971), 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) [2023-08-29 20:51:57,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 226.0) internal successors, (2260), 10 states have internal predecessors, (2260), 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) [2023-08-29 20:51:57,805 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 226.0) internal successors, (2260), 10 states have internal predecessors, (2260), 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) [2023-08-29 20:51:57,805 INFO L175 Difference]: Start difference. First operand has 62 places, 38 transitions, 213 flow. Second operand 9 states and 971 transitions. [2023-08-29 20:51:57,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 116 transitions, 827 flow [2023-08-29 20:51:57,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 116 transitions, 786 flow, removed 12 selfloop flow, removed 6 redundant places. [2023-08-29 20:51:57,826 INFO L231 Difference]: Finished difference. Result has 69 places, 47 transitions, 353 flow [2023-08-29 20:51:57,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=353, PETRI_PLACES=69, PETRI_TRANSITIONS=47} [2023-08-29 20:51:57,826 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 24 predicate places. [2023-08-29 20:51:57,827 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 47 transitions, 353 flow [2023-08-29 20:51:57,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.4) internal successors, (502), 5 states have internal predecessors, (502), 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) [2023-08-29 20:51:57,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:51:57,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:51:57,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 20:51:57,828 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-29 20:51:57,828 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:51:57,828 INFO L85 PathProgramCache]: Analyzing trace with hash 767516014, now seen corresponding path program 1 times [2023-08-29 20:51:57,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:51:57,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442946269] [2023-08-29 20:51:57,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:51:57,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:51:57,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:51:57,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:51:57,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:51:57,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442946269] [2023-08-29 20:51:57,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442946269] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:51:57,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:51:57,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:51:57,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856752044] [2023-08-29 20:51:57,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:51:57,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:51:57,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:51:57,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:51:57,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:51:57,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 226 [2023-08-29 20:51:57,977 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 47 transitions, 353 flow. Second operand has 5 states, 5 states have (on average 106.6) internal successors, (533), 5 states have internal predecessors, (533), 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) [2023-08-29 20:51:57,977 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:51:57,977 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 226 [2023-08-29 20:51:57,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:51:59,009 INFO L130 PetriNetUnfolder]: 6300/9930 cut-off events. [2023-08-29 20:51:59,009 INFO L131 PetriNetUnfolder]: For 31274/31434 co-relation queries the response was YES. [2023-08-29 20:51:59,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33869 conditions, 9930 events. 6300/9930 cut-off events. For 31274/31434 co-relation queries the response was YES. Maximal size of possible extension queue 784. Compared 74377 event pairs, 1009 based on Foata normal form. 536/10418 useless extension candidates. Maximal degree in co-relation 33851. Up to 3322 conditions per place. [2023-08-29 20:51:59,088 INFO L137 encePairwiseOnDemand]: 221/226 looper letters, 63 selfloop transitions, 4 changer transitions 33/104 dead transitions. [2023-08-29 20:51:59,089 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 104 transitions, 906 flow [2023-08-29 20:51:59,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 20:51:59,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 20:51:59,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 795 transitions. [2023-08-29 20:51:59,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5025284450063211 [2023-08-29 20:51:59,092 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 795 transitions. [2023-08-29 20:51:59,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 795 transitions. [2023-08-29 20:51:59,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:51:59,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 795 transitions. [2023-08-29 20:51:59,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 113.57142857142857) internal successors, (795), 7 states have internal predecessors, (795), 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) [2023-08-29 20:51:59,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 226.0) internal successors, (1808), 8 states have internal predecessors, (1808), 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) [2023-08-29 20:51:59,099 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 226.0) internal successors, (1808), 8 states have internal predecessors, (1808), 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) [2023-08-29 20:51:59,099 INFO L175 Difference]: Start difference. First operand has 69 places, 47 transitions, 353 flow. Second operand 7 states and 795 transitions. [2023-08-29 20:51:59,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 104 transitions, 906 flow [2023-08-29 20:51:59,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 104 transitions, 821 flow, removed 39 selfloop flow, removed 5 redundant places. [2023-08-29 20:51:59,203 INFO L231 Difference]: Finished difference. Result has 71 places, 42 transitions, 295 flow [2023-08-29 20:51:59,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=295, PETRI_PLACES=71, PETRI_TRANSITIONS=42} [2023-08-29 20:51:59,206 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 26 predicate places. [2023-08-29 20:51:59,206 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 42 transitions, 295 flow [2023-08-29 20:51:59,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 106.6) internal successors, (533), 5 states have internal predecessors, (533), 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) [2023-08-29 20:51:59,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:51:59,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:51:59,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 20:51:59,208 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-29 20:51:59,209 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:51:59,209 INFO L85 PathProgramCache]: Analyzing trace with hash 427575556, now seen corresponding path program 1 times [2023-08-29 20:51:59,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:51:59,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276319601] [2023-08-29 20:51:59,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:51:59,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:51:59,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:51:59,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:51:59,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:51:59,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276319601] [2023-08-29 20:51:59,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276319601] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:51:59,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:51:59,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 20:51:59,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619147511] [2023-08-29 20:51:59,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:51:59,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 20:51:59,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:51:59,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 20:51:59,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-29 20:51:59,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 226 [2023-08-29 20:51:59,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 42 transitions, 295 flow. Second operand has 6 states, 6 states have (on average 100.33333333333333) internal successors, (602), 6 states have internal predecessors, (602), 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) [2023-08-29 20:51:59,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:51:59,474 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 226 [2023-08-29 20:51:59,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:51:59,888 INFO L130 PetriNetUnfolder]: 3651/5844 cut-off events. [2023-08-29 20:51:59,889 INFO L131 PetriNetUnfolder]: For 13274/13294 co-relation queries the response was YES. [2023-08-29 20:51:59,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18956 conditions, 5844 events. 3651/5844 cut-off events. For 13274/13294 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 40066 event pairs, 1019 based on Foata normal form. 164/5960 useless extension candidates. Maximal degree in co-relation 18937. Up to 1928 conditions per place. [2023-08-29 20:51:59,920 INFO L137 encePairwiseOnDemand]: 221/226 looper letters, 48 selfloop transitions, 3 changer transitions 22/76 dead transitions. [2023-08-29 20:51:59,920 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 76 transitions, 607 flow [2023-08-29 20:51:59,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 20:51:59,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 20:51:59,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 640 transitions. [2023-08-29 20:51:59,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.471976401179941 [2023-08-29 20:51:59,923 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 640 transitions. [2023-08-29 20:51:59,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 640 transitions. [2023-08-29 20:51:59,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:51:59,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 640 transitions. [2023-08-29 20:51:59,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 106.66666666666667) internal successors, (640), 6 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) [2023-08-29 20:51:59,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 226.0) internal successors, (1582), 7 states have internal predecessors, (1582), 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) [2023-08-29 20:51:59,929 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 226.0) internal successors, (1582), 7 states have internal predecessors, (1582), 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) [2023-08-29 20:51:59,929 INFO L175 Difference]: Start difference. First operand has 71 places, 42 transitions, 295 flow. Second operand 6 states and 640 transitions. [2023-08-29 20:51:59,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 76 transitions, 607 flow [2023-08-29 20:51:59,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 76 transitions, 594 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-08-29 20:51:59,946 INFO L231 Difference]: Finished difference. Result has 72 places, 34 transitions, 234 flow [2023-08-29 20:51:59,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=234, PETRI_PLACES=72, PETRI_TRANSITIONS=34} [2023-08-29 20:51:59,947 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 27 predicate places. [2023-08-29 20:51:59,947 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 34 transitions, 234 flow [2023-08-29 20:51:59,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 100.33333333333333) internal successors, (602), 6 states have internal predecessors, (602), 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) [2023-08-29 20:51:59,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:51:59,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:51:59,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 20:51:59,948 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-29 20:51:59,949 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:51:59,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1698285326, now seen corresponding path program 1 times [2023-08-29 20:51:59,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:51:59,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839664256] [2023-08-29 20:51:59,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:51:59,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:51:59,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:52:00,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:52:00,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:52:00,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839664256] [2023-08-29 20:52:00,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839664256] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:52:00,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:52:00,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:52:00,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923039275] [2023-08-29 20:52:00,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:52:00,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:52:00,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:52:00,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:52:00,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:52:00,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 226 [2023-08-29 20:52:00,107 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 34 transitions, 234 flow. Second operand has 5 states, 5 states have (on average 102.8) internal successors, (514), 5 states have internal predecessors, (514), 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) [2023-08-29 20:52:00,107 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:52:00,107 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 226 [2023-08-29 20:52:00,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:52:00,356 INFO L130 PetriNetUnfolder]: 1221/2142 cut-off events. [2023-08-29 20:52:00,356 INFO L131 PetriNetUnfolder]: For 5669/5671 co-relation queries the response was YES. [2023-08-29 20:52:00,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7051 conditions, 2142 events. 1221/2142 cut-off events. For 5669/5671 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 13298 event pairs, 399 based on Foata normal form. 96/2229 useless extension candidates. Maximal degree in co-relation 7031. Up to 1099 conditions per place. [2023-08-29 20:52:00,370 INFO L137 encePairwiseOnDemand]: 222/226 looper letters, 33 selfloop transitions, 3 changer transitions 9/49 dead transitions. [2023-08-29 20:52:00,370 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 49 transitions, 396 flow [2023-08-29 20:52:00,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 20:52:00,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 20:52:00,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 537 transitions. [2023-08-29 20:52:00,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47522123893805307 [2023-08-29 20:52:00,372 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 537 transitions. [2023-08-29 20:52:00,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 537 transitions. [2023-08-29 20:52:00,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:52:00,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 537 transitions. [2023-08-29 20:52:00,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.4) internal successors, (537), 5 states have internal predecessors, (537), 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) [2023-08-29 20:52:00,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 226.0) internal successors, (1356), 6 states have internal predecessors, (1356), 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) [2023-08-29 20:52:00,376 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 226.0) internal successors, (1356), 6 states have internal predecessors, (1356), 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) [2023-08-29 20:52:00,377 INFO L175 Difference]: Start difference. First operand has 72 places, 34 transitions, 234 flow. Second operand 5 states and 537 transitions. [2023-08-29 20:52:00,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 49 transitions, 396 flow [2023-08-29 20:52:00,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 49 transitions, 309 flow, removed 24 selfloop flow, removed 13 redundant places. [2023-08-29 20:52:00,384 INFO L231 Difference]: Finished difference. Result has 63 places, 34 transitions, 185 flow [2023-08-29 20:52:00,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=185, PETRI_PLACES=63, PETRI_TRANSITIONS=34} [2023-08-29 20:52:00,385 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 18 predicate places. [2023-08-29 20:52:00,385 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 34 transitions, 185 flow [2023-08-29 20:52:00,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 102.8) internal successors, (514), 5 states have internal predecessors, (514), 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) [2023-08-29 20:52:00,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:52:00,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:52:00,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 20:52:00,386 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-29 20:52:00,386 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:52:00,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1107248248, now seen corresponding path program 1 times [2023-08-29 20:52:00,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:52:00,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374294135] [2023-08-29 20:52:00,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:52:00,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:52:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:52:00,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:52:00,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:52:00,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374294135] [2023-08-29 20:52:00,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374294135] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:52:00,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:52:00,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:52:00,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730997856] [2023-08-29 20:52:00,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:52:00,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:52:00,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:52:00,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:52:00,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:52:00,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 226 [2023-08-29 20:52:00,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 34 transitions, 185 flow. Second operand has 5 states, 5 states have (on average 101.0) internal successors, (505), 5 states have internal predecessors, (505), 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) [2023-08-29 20:52:00,519 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:52:00,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 226 [2023-08-29 20:52:00,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:52:00,808 INFO L130 PetriNetUnfolder]: 2169/3468 cut-off events. [2023-08-29 20:52:00,808 INFO L131 PetriNetUnfolder]: For 3946/3947 co-relation queries the response was YES. [2023-08-29 20:52:00,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9429 conditions, 3468 events. 2169/3468 cut-off events. For 3946/3947 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 20693 event pairs, 487 based on Foata normal form. 96/3518 useless extension candidates. Maximal degree in co-relation 9415. Up to 1225 conditions per place. [2023-08-29 20:52:00,825 INFO L137 encePairwiseOnDemand]: 218/226 looper letters, 41 selfloop transitions, 10 changer transitions 16/70 dead transitions. [2023-08-29 20:52:00,826 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 70 transitions, 454 flow [2023-08-29 20:52:00,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 20:52:00,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 20:52:00,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 746 transitions. [2023-08-29 20:52:00,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715549936788875 [2023-08-29 20:52:00,829 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 746 transitions. [2023-08-29 20:52:00,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 746 transitions. [2023-08-29 20:52:00,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:52:00,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 746 transitions. [2023-08-29 20:52:00,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 106.57142857142857) internal successors, (746), 7 states have internal predecessors, (746), 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) [2023-08-29 20:52:00,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 226.0) internal successors, (1808), 8 states have internal predecessors, (1808), 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) [2023-08-29 20:52:00,834 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 226.0) internal successors, (1808), 8 states have internal predecessors, (1808), 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) [2023-08-29 20:52:00,834 INFO L175 Difference]: Start difference. First operand has 63 places, 34 transitions, 185 flow. Second operand 7 states and 746 transitions. [2023-08-29 20:52:00,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 70 transitions, 454 flow [2023-08-29 20:52:00,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 70 transitions, 434 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-29 20:52:00,844 INFO L231 Difference]: Finished difference. Result has 68 places, 37 transitions, 247 flow [2023-08-29 20:52:00,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=247, PETRI_PLACES=68, PETRI_TRANSITIONS=37} [2023-08-29 20:52:00,845 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 23 predicate places. [2023-08-29 20:52:00,845 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 37 transitions, 247 flow [2023-08-29 20:52:00,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 101.0) internal successors, (505), 5 states have internal predecessors, (505), 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) [2023-08-29 20:52:00,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:52:00,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:52:00,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-29 20:52:00,846 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-29 20:52:00,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:52:00,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1719977634, now seen corresponding path program 2 times [2023-08-29 20:52:00,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:52:00,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395218252] [2023-08-29 20:52:00,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:52:00,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:52:00,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:52:00,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:52:00,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:52:00,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395218252] [2023-08-29 20:52:00,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395218252] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:52:00,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:52:00,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 20:52:00,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419725204] [2023-08-29 20:52:00,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:52:00,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 20:52:00,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:52:00,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 20:52:00,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-29 20:52:00,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 226 [2023-08-29 20:52:00,997 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 37 transitions, 247 flow. Second operand has 6 states, 6 states have (on average 100.5) internal successors, (603), 6 states have internal predecessors, (603), 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) [2023-08-29 20:52:00,997 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:52:00,997 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 226 [2023-08-29 20:52:00,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:52:01,326 INFO L130 PetriNetUnfolder]: 2024/3261 cut-off events. [2023-08-29 20:52:01,326 INFO L131 PetriNetUnfolder]: For 6865/6872 co-relation queries the response was YES. [2023-08-29 20:52:01,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10033 conditions, 3261 events. 2024/3261 cut-off events. For 6865/6872 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 18691 event pairs, 746 based on Foata normal form. 144/3395 useless extension candidates. Maximal degree in co-relation 10016. Up to 1278 conditions per place. [2023-08-29 20:52:01,340 INFO L137 encePairwiseOnDemand]: 221/226 looper letters, 20 selfloop transitions, 3 changer transitions 37/63 dead transitions. [2023-08-29 20:52:01,340 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 63 transitions, 496 flow [2023-08-29 20:52:01,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 20:52:01,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 20:52:01,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 634 transitions. [2023-08-29 20:52:01,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46755162241887904 [2023-08-29 20:52:01,342 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 634 transitions. [2023-08-29 20:52:01,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 634 transitions. [2023-08-29 20:52:01,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:52:01,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 634 transitions. [2023-08-29 20:52:01,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 105.66666666666667) internal successors, (634), 6 states have internal predecessors, (634), 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) [2023-08-29 20:52:01,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 226.0) internal successors, (1582), 7 states have internal predecessors, (1582), 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) [2023-08-29 20:52:01,347 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 226.0) internal successors, (1582), 7 states have internal predecessors, (1582), 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) [2023-08-29 20:52:01,348 INFO L175 Difference]: Start difference. First operand has 68 places, 37 transitions, 247 flow. Second operand 6 states and 634 transitions. [2023-08-29 20:52:01,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 63 transitions, 496 flow [2023-08-29 20:52:01,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 63 transitions, 460 flow, removed 17 selfloop flow, removed 5 redundant places. [2023-08-29 20:52:01,360 INFO L231 Difference]: Finished difference. Result has 69 places, 23 transitions, 130 flow [2023-08-29 20:52:01,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=130, PETRI_PLACES=69, PETRI_TRANSITIONS=23} [2023-08-29 20:52:01,361 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 24 predicate places. [2023-08-29 20:52:01,361 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 23 transitions, 130 flow [2023-08-29 20:52:01,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 100.5) internal successors, (603), 6 states have internal predecessors, (603), 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) [2023-08-29 20:52:01,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:52:01,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:52:01,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-29 20:52:01,362 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-29 20:52:01,363 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:52:01,363 INFO L85 PathProgramCache]: Analyzing trace with hash 70695966, now seen corresponding path program 1 times [2023-08-29 20:52:01,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:52:01,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691189356] [2023-08-29 20:52:01,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:52:01,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:52:01,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:52:01,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:52:01,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:52:01,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691189356] [2023-08-29 20:52:01,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691189356] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:52:01,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:52:01,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:52:01,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113656147] [2023-08-29 20:52:01,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:52:01,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:52:01,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:52:01,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:52:01,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:52:01,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 226 [2023-08-29 20:52:01,500 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 23 transitions, 130 flow. Second operand has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 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) [2023-08-29 20:52:01,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:52:01,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 226 [2023-08-29 20:52:01,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:52:01,575 INFO L130 PetriNetUnfolder]: 182/297 cut-off events. [2023-08-29 20:52:01,575 INFO L131 PetriNetUnfolder]: For 747/747 co-relation queries the response was YES. [2023-08-29 20:52:01,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 894 conditions, 297 events. 182/297 cut-off events. For 747/747 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 896 event pairs, 66 based on Foata normal form. 24/309 useless extension candidates. Maximal degree in co-relation 877. Up to 119 conditions per place. [2023-08-29 20:52:01,576 INFO L137 encePairwiseOnDemand]: 222/226 looper letters, 0 selfloop transitions, 0 changer transitions 35/35 dead transitions. [2023-08-29 20:52:01,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 35 transitions, 228 flow [2023-08-29 20:52:01,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 20:52:01,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 20:52:01,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 658 transitions. [2023-08-29 20:52:01,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48525073746312686 [2023-08-29 20:52:01,580 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 658 transitions. [2023-08-29 20:52:01,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 658 transitions. [2023-08-29 20:52:01,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:52:01,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 658 transitions. [2023-08-29 20:52:01,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 109.66666666666667) internal successors, (658), 6 states have internal predecessors, (658), 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) [2023-08-29 20:52:01,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 226.0) internal successors, (1582), 7 states have internal predecessors, (1582), 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) [2023-08-29 20:52:01,584 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 226.0) internal successors, (1582), 7 states have internal predecessors, (1582), 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) [2023-08-29 20:52:01,584 INFO L175 Difference]: Start difference. First operand has 69 places, 23 transitions, 130 flow. Second operand 6 states and 658 transitions. [2023-08-29 20:52:01,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 35 transitions, 228 flow [2023-08-29 20:52:01,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 35 transitions, 150 flow, removed 15 selfloop flow, removed 23 redundant places. [2023-08-29 20:52:01,586 INFO L231 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2023-08-29 20:52:01,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2023-08-29 20:52:01,587 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -2 predicate places. [2023-08-29 20:52:01,587 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2023-08-29 20:52:01,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 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) [2023-08-29 20:52:01,589 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 14 remaining) [2023-08-29 20:52:01,590 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 14 remaining) [2023-08-29 20:52:01,590 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 14 remaining) [2023-08-29 20:52:01,590 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 14 remaining) [2023-08-29 20:52:01,590 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 14 remaining) [2023-08-29 20:52:01,590 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 14 remaining) [2023-08-29 20:52:01,590 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 14 remaining) [2023-08-29 20:52:01,591 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 14 remaining) [2023-08-29 20:52:01,591 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (5 of 14 remaining) [2023-08-29 20:52:01,591 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (4 of 14 remaining) [2023-08-29 20:52:01,591 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 14 remaining) [2023-08-29 20:52:01,591 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 14 remaining) [2023-08-29 20:52:01,591 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 14 remaining) [2023-08-29 20:52:01,591 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 14 remaining) [2023-08-29 20:52:01,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-29 20:52:01,592 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:52:01,595 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 20:52:01,595 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 20:52:01,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 08:52:01 BasicIcfg [2023-08-29 20:52:01,598 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 20:52:01,598 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 20:52:01,598 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 20:52:01,599 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 20:52:01,599 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:51:47" (3/4) ... [2023-08-29 20:52:01,601 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-29 20:52:01,606 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-29 20:52:01,607 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-29 20:52:01,607 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-08-29 20:52:01,607 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2023-08-29 20:52:01,612 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2023-08-29 20:52:01,612 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-29 20:52:01,613 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-29 20:52:01,613 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-29 20:52:01,649 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-29 20:52:01,649 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 20:52:01,650 INFO L158 Benchmark]: Toolchain (without parser) took 15260.12ms. Allocated memory was 75.5MB in the beginning and 1.0GB in the end (delta: 937.4MB). Free memory was 52.2MB in the beginning and 781.9MB in the end (delta: -729.7MB). Peak memory consumption was 212.1MB. Max. memory is 16.1GB. [2023-08-29 20:52:01,650 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 56.6MB. Free memory is still 34.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 20:52:01,650 INFO L158 Benchmark]: CACSL2BoogieTranslator took 565.34ms. Allocated memory is still 75.5MB. Free memory was 52.0MB in the beginning and 49.6MB in the end (delta: 2.4MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. [2023-08-29 20:52:01,651 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.70ms. Allocated memory is still 75.5MB. Free memory was 49.6MB in the beginning and 47.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 20:52:01,651 INFO L158 Benchmark]: Boogie Preprocessor took 49.52ms. Allocated memory is still 75.5MB. Free memory was 47.5MB in the beginning and 45.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 20:52:01,651 INFO L158 Benchmark]: RCFGBuilder took 481.91ms. Allocated memory is still 75.5MB. Free memory was 45.8MB in the beginning and 52.2MB in the end (delta: -6.4MB). Peak memory consumption was 17.5MB. Max. memory is 16.1GB. [2023-08-29 20:52:01,652 INFO L158 Benchmark]: TraceAbstraction took 14046.88ms. Allocated memory was 75.5MB in the beginning and 1.0GB in the end (delta: 937.4MB). Free memory was 51.6MB in the beginning and 786.1MB in the end (delta: -734.5MB). Peak memory consumption was 791.5MB. Max. memory is 16.1GB. [2023-08-29 20:52:01,652 INFO L158 Benchmark]: Witness Printer took 51.06ms. Allocated memory is still 1.0GB. Free memory was 785.1MB in the beginning and 781.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-29 20:52:01,653 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 56.6MB. Free memory is still 34.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 565.34ms. Allocated memory is still 75.5MB. Free memory was 52.0MB in the beginning and 49.6MB in the end (delta: 2.4MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.70ms. Allocated memory is still 75.5MB. Free memory was 49.6MB in the beginning and 47.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.52ms. Allocated memory is still 75.5MB. Free memory was 47.5MB in the beginning and 45.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 481.91ms. Allocated memory is still 75.5MB. Free memory was 45.8MB in the beginning and 52.2MB in the end (delta: -6.4MB). Peak memory consumption was 17.5MB. Max. memory is 16.1GB. * TraceAbstraction took 14046.88ms. Allocated memory was 75.5MB in the beginning and 1.0GB in the end (delta: 937.4MB). Free memory was 51.6MB in the beginning and 786.1MB in the end (delta: -734.5MB). Peak memory consumption was 791.5MB. Max. memory is 16.1GB. * Witness Printer took 51.06ms. Allocated memory is still 1.0GB. Free memory was 785.1MB in the beginning and 781.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.1s, 119 PlacesBefore, 45 PlacesAfterwards, 108 TransitionsBefore, 33 TransitionsAfterwards, 2472 CoEnabledTransitionPairs, 5 FixpointIterations, 34 TrivialSequentialCompositions, 67 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 110 TotalNumberOfCompositions, 4571 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2640, independent: 2542, independent conditional: 0, independent unconditional: 2542, dependent: 98, dependent conditional: 0, dependent unconditional: 98, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1366, independent: 1339, independent conditional: 0, independent unconditional: 1339, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2640, independent: 1203, independent conditional: 0, independent unconditional: 1203, dependent: 71, dependent conditional: 0, dependent unconditional: 71, unknown: 1366, unknown conditional: 0, unknown unconditional: 1366] , Statistics on independence cache: Total cache size (in pairs): 118, Positive cache size: 107, Positive conditional cache size: 0, Positive unconditional cache size: 107, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - 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: -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: -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: -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: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 798]: 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 9 procedures, 147 locations, 14 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: 13.9s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 7.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1083 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 862 mSDsluCounter, 381 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 296 mSDsCounter, 74 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2665 IncrementalHoareTripleChecker+Invalid, 2739 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 74 mSolverCounterUnsat, 85 mSDtfsCounter, 2665 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=353occurred in iteration=7, InterpolantAutomatonStates: 80, 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, 0.2s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 168 NumberOfCodeBlocks, 168 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 155 ConstructedInterpolants, 0 QuantifiedInterpolants, 1891 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-29 20:52:01,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE