./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe015_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 BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_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 5350e4ca2594121b974c795f0a5f8bd0219ad1e56ba65ceaff14b5f6479d7178 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 23:35:38,203 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 23:35:38,206 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 23:35:38,235 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 23:35:38,237 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 23:35:38,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 23:35:38,242 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 23:35:38,245 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 23:35:38,247 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 23:35:38,251 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 23:35:38,252 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 23:35:38,255 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 23:35:38,255 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 23:35:38,257 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 23:35:38,259 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 23:35:38,264 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 23:35:38,265 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 23:35:38,266 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 23:35:38,267 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 23:35:38,268 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 23:35:38,269 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 23:35:38,270 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 23:35:38,271 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 23:35:38,272 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 23:35:38,275 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 23:35:38,275 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 23:35:38,275 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 23:35:38,276 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 23:35:38,276 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 23:35:38,277 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 23:35:38,277 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 23:35:38,278 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 23:35:38,279 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 23:35:38,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 23:35:38,280 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 23:35:38,280 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 23:35:38,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 23:35:38,281 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 23:35:38,282 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 23:35:38,283 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 23:35:38,283 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 23:35:38,285 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-31 23:35:38,324 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 23:35:38,326 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 23:35:38,328 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 23:35:38,328 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 23:35:38,329 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 23:35:38,329 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 23:35:38,329 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 23:35:38,330 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 23:35:38,330 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 23:35:38,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 23:35:38,331 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 23:35:38,331 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 23:35:38,331 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 23:35:38,331 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 23:35:38,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 23:35:38,332 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-31 23:35:38,332 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-31 23:35:38,332 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-31 23:35:38,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 23:35:38,333 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-31 23:35:38,333 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 23:35:38,333 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 23:35:38,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 23:35:38,333 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 23:35:38,334 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 23:35:38,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:35:38,334 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 23:35:38,334 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 23:35:38,334 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 23:35:38,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 23:35:38,335 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 23:35:38,335 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 23:35:38,335 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 23:35:38,335 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 23:35:38,336 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5350e4ca2594121b974c795f0a5f8bd0219ad1e56ba65ceaff14b5f6479d7178 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 23:35:38,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 23:35:38,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 23:35:38,656 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 23:35:38,657 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 23:35:38,658 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 23:35:38,659 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-31 23:35:39,851 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 23:35:40,119 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 23:35:40,120 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-31 23:35:40,135 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af9eec2ef/1da119c5158745bab72feab83775cabd/FLAG11da90536 [2023-08-31 23:35:40,158 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af9eec2ef/1da119c5158745bab72feab83775cabd [2023-08-31 23:35:40,160 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 23:35:40,162 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 23:35:40,164 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 23:35:40,165 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 23:35:40,168 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 23:35:40,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:35:40" (1/1) ... [2023-08-31 23:35:40,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@247ae16e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:35:40, skipping insertion in model container [2023-08-31 23:35:40,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:35:40" (1/1) ... [2023-08-31 23:35:40,175 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 23:35:40,233 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 23:35:40,394 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/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-08-31 23:35:40,556 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:35:40,566 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 23:35:40,580 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/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-08-31 23:35:40,614 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:35:40,653 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:35:40,654 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:35:40,659 INFO L208 MainTranslator]: Completed translation [2023-08-31 23:35:40,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:35:40 WrapperNode [2023-08-31 23:35:40,660 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 23:35:40,661 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 23:35:40,662 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 23:35:40,662 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 23:35:40,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:35:40" (1/1) ... [2023-08-31 23:35:40,684 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:35:40" (1/1) ... [2023-08-31 23:35:40,706 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-08-31 23:35:40,706 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 23:35:40,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 23:35:40,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 23:35:40,707 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 23:35:40,714 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:35:40" (1/1) ... [2023-08-31 23:35:40,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:35:40" (1/1) ... [2023-08-31 23:35:40,717 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:35:40" (1/1) ... [2023-08-31 23:35:40,717 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:35:40" (1/1) ... [2023-08-31 23:35:40,722 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:35:40" (1/1) ... [2023-08-31 23:35:40,723 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:35:40" (1/1) ... [2023-08-31 23:35:40,725 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:35:40" (1/1) ... [2023-08-31 23:35:40,726 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:35:40" (1/1) ... [2023-08-31 23:35:40,728 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 23:35:40,729 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 23:35:40,729 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 23:35:40,729 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 23:35:40,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:35:40" (1/1) ... [2023-08-31 23:35:40,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:35:40,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 23:35:40,759 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) [2023-08-31 23:35:40,761 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 [2023-08-31 23:35:40,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 23:35:40,785 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 23:35:40,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 23:35:40,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 23:35:40,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 23:35:40,786 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-31 23:35:40,786 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-31 23:35:40,786 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-31 23:35:40,786 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-31 23:35:40,786 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-31 23:35:40,786 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-31 23:35:40,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 23:35:40,787 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 23:35:40,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 23:35:40,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 23:35:40,788 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 23:35:40,896 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 23:35:40,898 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 23:35:41,112 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 23:35:41,118 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 23:35:41,119 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-31 23:35:41,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:35:41 BoogieIcfgContainer [2023-08-31 23:35:41,121 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 23:35:41,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 23:35:41,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 23:35:41,126 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 23:35:41,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 11:35:40" (1/3) ... [2023-08-31 23:35:41,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f87bfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:35:41, skipping insertion in model container [2023-08-31 23:35:41,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:35:40" (2/3) ... [2023-08-31 23:35:41,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f87bfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:35:41, skipping insertion in model container [2023-08-31 23:35:41,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:35:41" (3/3) ... [2023-08-31 23:35:41,128 INFO L112 eAbstractionObserver]: Analyzing ICFG safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-31 23:35:41,143 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 23:35:41,144 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-31 23:35:41,144 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 23:35:41,223 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:35:41,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 94 transitions, 203 flow [2023-08-31 23:35:41,338 INFO L130 PetriNetUnfolder]: 2/91 cut-off events. [2023-08-31 23:35:41,338 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:35:41,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 91 events. 2/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 69 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 71. Up to 2 conditions per place. [2023-08-31 23:35:41,343 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 94 transitions, 203 flow [2023-08-31 23:35:41,347 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 87 transitions, 183 flow [2023-08-31 23:35:41,350 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:35:41,363 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 87 transitions, 183 flow [2023-08-31 23:35:41,369 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 87 transitions, 183 flow [2023-08-31 23:35:41,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 87 transitions, 183 flow [2023-08-31 23:35:41,408 INFO L130 PetriNetUnfolder]: 2/87 cut-off events. [2023-08-31 23:35:41,408 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:35:41,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 87 events. 2/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 68 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2023-08-31 23:35:41,410 INFO L119 LiptonReduction]: Number of co-enabled transitions 1512 [2023-08-31 23:35:43,938 INFO L134 LiptonReduction]: Checked pairs total: 3110 [2023-08-31 23:35:43,938 INFO L136 LiptonReduction]: Total number of compositions: 90 [2023-08-31 23:35:43,951 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 23:35:43,956 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;@4ba72d12, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:35:43,957 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-31 23:35:43,958 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-31 23:35:43,958 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:35:43,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:35:43,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-31 23:35:43,960 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:35:43,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:35:43,964 INFO L85 PathProgramCache]: Analyzing trace with hash 331, now seen corresponding path program 1 times [2023-08-31 23:35:43,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:35:43,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827714742] [2023-08-31 23:35:43,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:35:43,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:35:44,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:35:44,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:35:44,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:35:44,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827714742] [2023-08-31 23:35:44,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827714742] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:35:44,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:35:44,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-31 23:35:44,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220378411] [2023-08-31 23:35:44,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:35:44,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-31 23:35:44,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:35:44,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-31 23:35:44,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-31 23:35:44,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 184 [2023-08-31 23:35:44,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 57 flow. Second operand has 2 states, 2 states have (on average 88.5) internal successors, (177), 2 states have internal predecessors, (177), 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) [2023-08-31 23:35:44,110 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:35:44,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 184 [2023-08-31 23:35:44,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:35:44,225 INFO L130 PetriNetUnfolder]: 218/368 cut-off events. [2023-08-31 23:35:44,225 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-31 23:35:44,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 750 conditions, 368 events. 218/368 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1542 event pairs, 218 based on Foata normal form. 0/328 useless extension candidates. Maximal degree in co-relation 739. Up to 352 conditions per place. [2023-08-31 23:35:44,231 INFO L137 encePairwiseOnDemand]: 178/184 looper letters, 15 selfloop transitions, 0 changer transitions 0/18 dead transitions. [2023-08-31 23:35:44,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 18 transitions, 75 flow [2023-08-31 23:35:44,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-31 23:35:44,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-31 23:35:44,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 197 transitions. [2023-08-31 23:35:44,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5353260869565217 [2023-08-31 23:35:44,246 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 197 transitions. [2023-08-31 23:35:44,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 197 transitions. [2023-08-31 23:35:44,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:35:44,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 197 transitions. [2023-08-31 23:35:44,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 98.5) internal successors, (197), 2 states have internal predecessors, (197), 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) [2023-08-31 23:35:44,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 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) [2023-08-31 23:35:44,261 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 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) [2023-08-31 23:35:44,263 INFO L175 Difference]: Start difference. First operand has 34 places, 24 transitions, 57 flow. Second operand 2 states and 197 transitions. [2023-08-31 23:35:44,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 18 transitions, 75 flow [2023-08-31 23:35:44,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 18 transitions, 72 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-31 23:35:44,267 INFO L231 Difference]: Finished difference. Result has 26 places, 18 transitions, 42 flow [2023-08-31 23:35:44,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=42, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2023-08-31 23:35:44,272 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -8 predicate places. [2023-08-31 23:35:44,272 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 42 flow [2023-08-31 23:35:44,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 88.5) internal successors, (177), 2 states have internal predecessors, (177), 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) [2023-08-31 23:35:44,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:35:44,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:35:44,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 23:35:44,273 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:35:44,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:35:44,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1858784635, now seen corresponding path program 1 times [2023-08-31 23:35:44,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:35:44,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078087771] [2023-08-31 23:35:44,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:35:44,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:35:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:35:44,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:35:44,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:35:44,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078087771] [2023-08-31 23:35:44,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078087771] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:35:44,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:35:44,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:35:44,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904107962] [2023-08-31 23:35:44,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:35:44,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:35:44,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:35:44,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:35:44,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:35:44,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 184 [2023-08-31 23:35:44,799 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 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) [2023-08-31 23:35:44,799 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:35:44,799 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 184 [2023-08-31 23:35:44,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:35:44,940 INFO L130 PetriNetUnfolder]: 797/1253 cut-off events. [2023-08-31 23:35:44,941 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:35:44,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2561 conditions, 1253 events. 797/1253 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5675 event pairs, 336 based on Foata normal form. 0/1207 useless extension candidates. Maximal degree in co-relation 2558. Up to 698 conditions per place. [2023-08-31 23:35:44,949 INFO L137 encePairwiseOnDemand]: 175/184 looper letters, 25 selfloop transitions, 8 changer transitions 0/33 dead transitions. [2023-08-31 23:35:44,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 33 transitions, 142 flow [2023-08-31 23:35:44,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:35:44,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:35:44,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 268 transitions. [2023-08-31 23:35:44,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4855072463768116 [2023-08-31 23:35:44,952 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 268 transitions. [2023-08-31 23:35:44,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 268 transitions. [2023-08-31 23:35:44,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:35:44,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 268 transitions. [2023-08-31 23:35:44,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 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) [2023-08-31 23:35:44,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 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) [2023-08-31 23:35:44,955 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 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) [2023-08-31 23:35:44,955 INFO L175 Difference]: Start difference. First operand has 26 places, 18 transitions, 42 flow. Second operand 3 states and 268 transitions. [2023-08-31 23:35:44,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 33 transitions, 142 flow [2023-08-31 23:35:44,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 33 transitions, 142 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 23:35:44,957 INFO L231 Difference]: Finished difference. Result has 30 places, 25 transitions, 104 flow [2023-08-31 23:35:44,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=30, PETRI_TRANSITIONS=25} [2023-08-31 23:35:44,957 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -4 predicate places. [2023-08-31 23:35:44,958 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 25 transitions, 104 flow [2023-08-31 23:35:44,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 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) [2023-08-31 23:35:44,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:35:44,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:35:44,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 23:35:44,959 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:35:44,959 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:35:44,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1858784637, now seen corresponding path program 1 times [2023-08-31 23:35:44,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:35:44,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548776706] [2023-08-31 23:35:44,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:35:44,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:35:44,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:35:45,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:35:45,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:35:45,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548776706] [2023-08-31 23:35:45,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548776706] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:35:45,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:35:45,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:35:45,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087904650] [2023-08-31 23:35:45,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:35:45,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:35:45,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:35:45,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:35:45,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:35:45,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 184 [2023-08-31 23:35:45,348 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 74.6) internal successors, (373), 5 states have internal predecessors, (373), 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) [2023-08-31 23:35:45,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:35:45,350 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 184 [2023-08-31 23:35:45,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:35:45,458 INFO L130 PetriNetUnfolder]: 425/747 cut-off events. [2023-08-31 23:35:45,458 INFO L131 PetriNetUnfolder]: For 390/394 co-relation queries the response was YES. [2023-08-31 23:35:45,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1995 conditions, 747 events. 425/747 cut-off events. For 390/394 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3639 event pairs, 103 based on Foata normal form. 101/846 useless extension candidates. Maximal degree in co-relation 1990. Up to 550 conditions per place. [2023-08-31 23:35:45,464 INFO L137 encePairwiseOnDemand]: 180/184 looper letters, 22 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2023-08-31 23:35:45,464 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 31 transitions, 176 flow [2023-08-31 23:35:45,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:35:45,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:35:45,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 386 transitions. [2023-08-31 23:35:45,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41956521739130437 [2023-08-31 23:35:45,467 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 386 transitions. [2023-08-31 23:35:45,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 386 transitions. [2023-08-31 23:35:45,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:35:45,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 386 transitions. [2023-08-31 23:35:45,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.2) internal successors, (386), 5 states have internal predecessors, (386), 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) [2023-08-31 23:35:45,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 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) [2023-08-31 23:35:45,471 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 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) [2023-08-31 23:35:45,471 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 104 flow. Second operand 5 states and 386 transitions. [2023-08-31 23:35:45,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 31 transitions, 176 flow [2023-08-31 23:35:45,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 31 transitions, 156 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:35:45,475 INFO L231 Difference]: Finished difference. Result has 31 places, 23 transitions, 86 flow [2023-08-31 23:35:45,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=86, PETRI_PLACES=31, PETRI_TRANSITIONS=23} [2023-08-31 23:35:45,476 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -3 predicate places. [2023-08-31 23:35:45,476 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 23 transitions, 86 flow [2023-08-31 23:35:45,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.6) internal successors, (373), 5 states have internal predecessors, (373), 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) [2023-08-31 23:35:45,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:35:45,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:35:45,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 23:35:45,477 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:35:45,478 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:35:45,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1144082084, now seen corresponding path program 1 times [2023-08-31 23:35:45,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:35:45,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063381656] [2023-08-31 23:35:45,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:35:45,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:35:45,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:35:45,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:35:45,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:35:45,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063381656] [2023-08-31 23:35:45,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063381656] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:35:45,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:35:45,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:35:45,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171113029] [2023-08-31 23:35:45,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:35:45,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:35:45,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:35:45,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:35:45,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:35:45,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 184 [2023-08-31 23:35:45,656 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 23 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 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) [2023-08-31 23:35:45,656 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:35:45,657 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 184 [2023-08-31 23:35:45,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:35:45,748 INFO L130 PetriNetUnfolder]: 438/744 cut-off events. [2023-08-31 23:35:45,748 INFO L131 PetriNetUnfolder]: For 144/145 co-relation queries the response was YES. [2023-08-31 23:35:45,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1848 conditions, 744 events. 438/744 cut-off events. For 144/145 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3430 event pairs, 69 based on Foata normal form. 7/735 useless extension candidates. Maximal degree in co-relation 1843. Up to 569 conditions per place. [2023-08-31 23:35:45,754 INFO L137 encePairwiseOnDemand]: 181/184 looper letters, 25 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2023-08-31 23:35:45,755 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 32 transitions, 172 flow [2023-08-31 23:35:45,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:35:45,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:35:45,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2023-08-31 23:35:45,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5036231884057971 [2023-08-31 23:35:45,757 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 278 transitions. [2023-08-31 23:35:45,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 278 transitions. [2023-08-31 23:35:45,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:35:45,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 278 transitions. [2023-08-31 23:35:45,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 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) [2023-08-31 23:35:45,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 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) [2023-08-31 23:35:45,763 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 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) [2023-08-31 23:35:45,763 INFO L175 Difference]: Start difference. First operand has 31 places, 23 transitions, 86 flow. Second operand 3 states and 278 transitions. [2023-08-31 23:35:45,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 32 transitions, 172 flow [2023-08-31 23:35:45,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 32 transitions, 166 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-31 23:35:45,765 INFO L231 Difference]: Finished difference. Result has 31 places, 23 transitions, 92 flow [2023-08-31 23:35:45,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=31, PETRI_TRANSITIONS=23} [2023-08-31 23:35:45,766 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -3 predicate places. [2023-08-31 23:35:45,767 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 23 transitions, 92 flow [2023-08-31 23:35:45,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 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) [2023-08-31 23:35:45,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:35:45,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:35:45,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 23:35:45,767 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:35:45,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:35:45,768 INFO L85 PathProgramCache]: Analyzing trace with hash -414417140, now seen corresponding path program 1 times [2023-08-31 23:35:45,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:35:45,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884751960] [2023-08-31 23:35:45,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:35:45,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:35:45,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:35:45,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:35:45,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:35:45,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884751960] [2023-08-31 23:35:45,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884751960] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:35:45,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:35:45,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:35:45,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601007151] [2023-08-31 23:35:45,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:35:45,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:35:45,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:35:45,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:35:45,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:35:45,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 184 [2023-08-31 23:35:45,936 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 23 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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) [2023-08-31 23:35:45,936 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:35:45,936 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 184 [2023-08-31 23:35:45,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:35:46,010 INFO L130 PetriNetUnfolder]: 412/701 cut-off events. [2023-08-31 23:35:46,010 INFO L131 PetriNetUnfolder]: For 271/272 co-relation queries the response was YES. [2023-08-31 23:35:46,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1860 conditions, 701 events. 412/701 cut-off events. For 271/272 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3147 event pairs, 226 based on Foata normal form. 7/692 useless extension candidates. Maximal degree in co-relation 1854. Up to 479 conditions per place. [2023-08-31 23:35:46,015 INFO L137 encePairwiseOnDemand]: 181/184 looper letters, 24 selfloop transitions, 4 changer transitions 0/32 dead transitions. [2023-08-31 23:35:46,015 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 32 transitions, 177 flow [2023-08-31 23:35:46,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:35:46,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:35:46,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2023-08-31 23:35:46,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5036231884057971 [2023-08-31 23:35:46,017 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 278 transitions. [2023-08-31 23:35:46,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 278 transitions. [2023-08-31 23:35:46,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:35:46,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 278 transitions. [2023-08-31 23:35:46,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 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) [2023-08-31 23:35:46,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 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) [2023-08-31 23:35:46,019 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 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) [2023-08-31 23:35:46,020 INFO L175 Difference]: Start difference. First operand has 31 places, 23 transitions, 92 flow. Second operand 3 states and 278 transitions. [2023-08-31 23:35:46,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 32 transitions, 177 flow [2023-08-31 23:35:46,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 32 transitions, 171 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:35:46,021 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 100 flow [2023-08-31 23:35:46,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2023-08-31 23:35:46,022 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -2 predicate places. [2023-08-31 23:35:46,022 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 100 flow [2023-08-31 23:35:46,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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) [2023-08-31 23:35:46,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:35:46,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:35:46,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 23:35:46,023 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:35:46,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:35:46,024 INFO L85 PathProgramCache]: Analyzing trace with hash -397247201, now seen corresponding path program 1 times [2023-08-31 23:35:46,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:35:46,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963822312] [2023-08-31 23:35:46,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:35:46,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:35:46,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:35:46,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:35:46,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:35:46,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963822312] [2023-08-31 23:35:46,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963822312] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:35:46,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:35:46,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:35:46,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877297240] [2023-08-31 23:35:46,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:35:46,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:35:46,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:35:46,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:35:46,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:35:46,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 184 [2023-08-31 23:35:46,151 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 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) [2023-08-31 23:35:46,151 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:35:46,151 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 184 [2023-08-31 23:35:46,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:35:46,250 INFO L130 PetriNetUnfolder]: 472/769 cut-off events. [2023-08-31 23:35:46,251 INFO L131 PetriNetUnfolder]: For 478/478 co-relation queries the response was YES. [2023-08-31 23:35:46,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2261 conditions, 769 events. 472/769 cut-off events. For 478/478 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3229 event pairs, 68 based on Foata normal form. 4/773 useless extension candidates. Maximal degree in co-relation 2254. Up to 378 conditions per place. [2023-08-31 23:35:46,256 INFO L137 encePairwiseOnDemand]: 176/184 looper letters, 36 selfloop transitions, 11 changer transitions 0/47 dead transitions. [2023-08-31 23:35:46,256 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 47 transitions, 286 flow [2023-08-31 23:35:46,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:35:46,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:35:46,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 355 transitions. [2023-08-31 23:35:46,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48233695652173914 [2023-08-31 23:35:46,258 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 355 transitions. [2023-08-31 23:35:46,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 355 transitions. [2023-08-31 23:35:46,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:35:46,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 355 transitions. [2023-08-31 23:35:46,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 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) [2023-08-31 23:35:46,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 184.0) internal successors, (920), 5 states have internal predecessors, (920), 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) [2023-08-31 23:35:46,270 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 184.0) internal successors, (920), 5 states have internal predecessors, (920), 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) [2023-08-31 23:35:46,271 INFO L175 Difference]: Start difference. First operand has 32 places, 23 transitions, 100 flow. Second operand 4 states and 355 transitions. [2023-08-31 23:35:46,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 47 transitions, 286 flow [2023-08-31 23:35:46,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 47 transitions, 270 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:35:46,274 INFO L231 Difference]: Finished difference. Result has 36 places, 30 transitions, 179 flow [2023-08-31 23:35:46,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=36, PETRI_TRANSITIONS=30} [2023-08-31 23:35:46,276 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2023-08-31 23:35:46,277 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 179 flow [2023-08-31 23:35:46,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 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) [2023-08-31 23:35:46,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:35:46,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:35:46,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 23:35:46,279 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:35:46,280 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:35:46,280 INFO L85 PathProgramCache]: Analyzing trace with hash 585824150, now seen corresponding path program 1 times [2023-08-31 23:35:46,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:35:46,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450592816] [2023-08-31 23:35:46,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:35:46,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:35:46,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:35:46,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:35:46,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:35:46,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450592816] [2023-08-31 23:35:46,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450592816] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:35:46,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:35:46,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:35:46,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856904380] [2023-08-31 23:35:46,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:35:46,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:35:46,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:35:46,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:35:46,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:35:46,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 184 [2023-08-31 23:35:46,443 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 179 flow. Second operand has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:35:46,443 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:35:46,443 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 184 [2023-08-31 23:35:46,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:35:46,542 INFO L130 PetriNetUnfolder]: 455/742 cut-off events. [2023-08-31 23:35:46,542 INFO L131 PetriNetUnfolder]: For 954/954 co-relation queries the response was YES. [2023-08-31 23:35:46,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2541 conditions, 742 events. 455/742 cut-off events. For 954/954 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2931 event pairs, 98 based on Foata normal form. 6/748 useless extension candidates. Maximal degree in co-relation 2532. Up to 284 conditions per place. [2023-08-31 23:35:46,547 INFO L137 encePairwiseOnDemand]: 176/184 looper letters, 33 selfloop transitions, 13 changer transitions 0/46 dead transitions. [2023-08-31 23:35:46,548 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 46 transitions, 350 flow [2023-08-31 23:35:46,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:35:46,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:35:46,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 346 transitions. [2023-08-31 23:35:46,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4701086956521739 [2023-08-31 23:35:46,550 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 346 transitions. [2023-08-31 23:35:46,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 346 transitions. [2023-08-31 23:35:46,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:35:46,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 346 transitions. [2023-08-31 23:35:46,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 86.5) internal successors, (346), 4 states have internal predecessors, (346), 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) [2023-08-31 23:35:46,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 184.0) internal successors, (920), 5 states have internal predecessors, (920), 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) [2023-08-31 23:35:46,553 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 184.0) internal successors, (920), 5 states have internal predecessors, (920), 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) [2023-08-31 23:35:46,553 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 179 flow. Second operand 4 states and 346 transitions. [2023-08-31 23:35:46,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 46 transitions, 350 flow [2023-08-31 23:35:46,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 46 transitions, 350 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 23:35:46,557 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 285 flow [2023-08-31 23:35:46,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=285, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2023-08-31 23:35:46,558 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 8 predicate places. [2023-08-31 23:35:46,558 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 285 flow [2023-08-31 23:35:46,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:35:46,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:35:46,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:35:46,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 23:35:46,559 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:35:46,560 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:35:46,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1955391567, now seen corresponding path program 1 times [2023-08-31 23:35:46,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:35:46,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527082851] [2023-08-31 23:35:46,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:35:46,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:35:46,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:35:46,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:35:46,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:35:46,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527082851] [2023-08-31 23:35:46,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527082851] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:35:46,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:35:46,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:35:46,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767704558] [2023-08-31 23:35:46,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:35:46,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:35:46,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:35:46,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:35:46,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:35:46,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 184 [2023-08-31 23:35:46,703 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 285 flow. Second operand has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 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) [2023-08-31 23:35:46,703 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:35:46,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 184 [2023-08-31 23:35:46,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:35:46,807 INFO L130 PetriNetUnfolder]: 329/611 cut-off events. [2023-08-31 23:35:46,808 INFO L131 PetriNetUnfolder]: For 2372/2439 co-relation queries the response was YES. [2023-08-31 23:35:46,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2256 conditions, 611 events. 329/611 cut-off events. For 2372/2439 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3167 event pairs, 53 based on Foata normal form. 59/657 useless extension candidates. Maximal degree in co-relation 2244. Up to 304 conditions per place. [2023-08-31 23:35:46,813 INFO L137 encePairwiseOnDemand]: 178/184 looper letters, 55 selfloop transitions, 8 changer transitions 0/75 dead transitions. [2023-08-31 23:35:46,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 75 transitions, 698 flow [2023-08-31 23:35:46,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:35:46,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:35:46,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 454 transitions. [2023-08-31 23:35:46,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4934782608695652 [2023-08-31 23:35:46,815 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 454 transitions. [2023-08-31 23:35:46,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 454 transitions. [2023-08-31 23:35:46,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:35:46,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 454 transitions. [2023-08-31 23:35:46,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 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) [2023-08-31 23:35:46,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 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) [2023-08-31 23:35:46,818 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 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) [2023-08-31 23:35:46,818 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 285 flow. Second operand 5 states and 454 transitions. [2023-08-31 23:35:46,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 75 transitions, 698 flow [2023-08-31 23:35:46,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 75 transitions, 687 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:35:46,823 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 341 flow [2023-08-31 23:35:46,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=341, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2023-08-31 23:35:46,824 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 14 predicate places. [2023-08-31 23:35:46,824 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 341 flow [2023-08-31 23:35:46,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 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) [2023-08-31 23:35:46,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:35:46,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:35:46,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 23:35:46,826 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:35:46,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:35:46,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1577224350, now seen corresponding path program 1 times [2023-08-31 23:35:46,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:35:46,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547232488] [2023-08-31 23:35:46,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:35:46,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:35:46,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:35:46,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:35:46,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:35:46,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547232488] [2023-08-31 23:35:46,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547232488] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:35:46,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:35:46,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:35:46,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196359211] [2023-08-31 23:35:46,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:35:46,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:35:46,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:35:46,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:35:46,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:35:46,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 184 [2023-08-31 23:35:46,972 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 341 flow. Second operand has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 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) [2023-08-31 23:35:46,972 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:35:46,972 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 184 [2023-08-31 23:35:46,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:35:47,150 INFO L130 PetriNetUnfolder]: 504/880 cut-off events. [2023-08-31 23:35:47,150 INFO L131 PetriNetUnfolder]: For 2737/2737 co-relation queries the response was YES. [2023-08-31 23:35:47,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4240 conditions, 880 events. 504/880 cut-off events. For 2737/2737 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4152 event pairs, 91 based on Foata normal form. 3/883 useless extension candidates. Maximal degree in co-relation 4224. Up to 363 conditions per place. [2023-08-31 23:35:47,156 INFO L137 encePairwiseOnDemand]: 176/184 looper letters, 46 selfloop transitions, 23 changer transitions 28/97 dead transitions. [2023-08-31 23:35:47,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 97 transitions, 866 flow [2023-08-31 23:35:47,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 23:35:47,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 23:35:47,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 522 transitions. [2023-08-31 23:35:47,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47282608695652173 [2023-08-31 23:35:47,159 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 522 transitions. [2023-08-31 23:35:47,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 522 transitions. [2023-08-31 23:35:47,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:35:47,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 522 transitions. [2023-08-31 23:35:47,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 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) [2023-08-31 23:35:47,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 184.0) internal successors, (1288), 7 states have internal predecessors, (1288), 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) [2023-08-31 23:35:47,163 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 184.0) internal successors, (1288), 7 states have internal predecessors, (1288), 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) [2023-08-31 23:35:47,163 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 341 flow. Second operand 6 states and 522 transitions. [2023-08-31 23:35:47,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 97 transitions, 866 flow [2023-08-31 23:35:47,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 97 transitions, 852 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:35:47,173 INFO L231 Difference]: Finished difference. Result has 54 places, 43 transitions, 421 flow [2023-08-31 23:35:47,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=421, PETRI_PLACES=54, PETRI_TRANSITIONS=43} [2023-08-31 23:35:47,175 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 20 predicate places. [2023-08-31 23:35:47,175 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 43 transitions, 421 flow [2023-08-31 23:35:47,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 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) [2023-08-31 23:35:47,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:35:47,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:35:47,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 23:35:47,176 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:35:47,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:35:47,176 INFO L85 PathProgramCache]: Analyzing trace with hash -324047993, now seen corresponding path program 1 times [2023-08-31 23:35:47,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:35:47,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621820627] [2023-08-31 23:35:47,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:35:47,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:35:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:35:47,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:35:47,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:35:47,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621820627] [2023-08-31 23:35:47,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621820627] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:35:47,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:35:47,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:35:47,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497975024] [2023-08-31 23:35:47,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:35:47,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:35:47,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:35:47,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:35:47,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:35:47,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 184 [2023-08-31 23:35:47,321 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 43 transitions, 421 flow. Second operand has 5 states, 5 states have (on average 80.6) internal successors, (403), 5 states have internal predecessors, (403), 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) [2023-08-31 23:35:47,321 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:35:47,322 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 184 [2023-08-31 23:35:47,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:35:47,464 INFO L130 PetriNetUnfolder]: 438/794 cut-off events. [2023-08-31 23:35:47,464 INFO L131 PetriNetUnfolder]: For 3576/3576 co-relation queries the response was YES. [2023-08-31 23:35:47,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3908 conditions, 794 events. 438/794 cut-off events. For 3576/3576 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3815 event pairs, 78 based on Foata normal form. 17/811 useless extension candidates. Maximal degree in co-relation 3890. Up to 406 conditions per place. [2023-08-31 23:35:47,470 INFO L137 encePairwiseOnDemand]: 176/184 looper letters, 46 selfloop transitions, 22 changer transitions 32/100 dead transitions. [2023-08-31 23:35:47,470 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 100 transitions, 1052 flow [2023-08-31 23:35:47,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 23:35:47,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 23:35:47,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 522 transitions. [2023-08-31 23:35:47,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47282608695652173 [2023-08-31 23:35:47,472 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 522 transitions. [2023-08-31 23:35:47,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 522 transitions. [2023-08-31 23:35:47,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:35:47,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 522 transitions. [2023-08-31 23:35:47,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 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) [2023-08-31 23:35:47,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 184.0) internal successors, (1288), 7 states have internal predecessors, (1288), 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) [2023-08-31 23:35:47,476 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 184.0) internal successors, (1288), 7 states have internal predecessors, (1288), 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) [2023-08-31 23:35:47,476 INFO L175 Difference]: Start difference. First operand has 54 places, 43 transitions, 421 flow. Second operand 6 states and 522 transitions. [2023-08-31 23:35:47,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 100 transitions, 1052 flow [2023-08-31 23:35:47,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 100 transitions, 1040 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-31 23:35:47,491 INFO L231 Difference]: Finished difference. Result has 59 places, 48 transitions, 581 flow [2023-08-31 23:35:47,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=581, PETRI_PLACES=59, PETRI_TRANSITIONS=48} [2023-08-31 23:35:47,492 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 25 predicate places. [2023-08-31 23:35:47,492 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 48 transitions, 581 flow [2023-08-31 23:35:47,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.6) internal successors, (403), 5 states have internal predecessors, (403), 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) [2023-08-31 23:35:47,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:35:47,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:35:47,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 23:35:47,493 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:35:47,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:35:47,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1150589821, now seen corresponding path program 2 times [2023-08-31 23:35:47,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:35:47,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902537251] [2023-08-31 23:35:47,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:35:47,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:35:47,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:35:47,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:35:47,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:35:47,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902537251] [2023-08-31 23:35:47,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902537251] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:35:47,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:35:47,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:35:47,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896960930] [2023-08-31 23:35:47,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:35:47,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:35:47,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:35:47,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:35:47,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:35:47,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 184 [2023-08-31 23:35:47,635 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 48 transitions, 581 flow. Second operand has 5 states, 5 states have (on average 85.4) internal successors, (427), 5 states have internal predecessors, (427), 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) [2023-08-31 23:35:47,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:35:47,636 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 184 [2023-08-31 23:35:47,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:35:47,745 INFO L130 PetriNetUnfolder]: 180/379 cut-off events. [2023-08-31 23:35:47,745 INFO L131 PetriNetUnfolder]: For 2398/2455 co-relation queries the response was YES. [2023-08-31 23:35:47,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1949 conditions, 379 events. 180/379 cut-off events. For 2398/2455 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1826 event pairs, 16 based on Foata normal form. 47/418 useless extension candidates. Maximal degree in co-relation 1929. Up to 191 conditions per place. [2023-08-31 23:35:47,749 INFO L137 encePairwiseOnDemand]: 178/184 looper letters, 51 selfloop transitions, 11 changer transitions 9/90 dead transitions. [2023-08-31 23:35:47,749 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 90 transitions, 1135 flow [2023-08-31 23:35:47,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 23:35:47,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 23:35:47,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 545 transitions. [2023-08-31 23:35:47,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4936594202898551 [2023-08-31 23:35:47,751 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 545 transitions. [2023-08-31 23:35:47,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 545 transitions. [2023-08-31 23:35:47,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:35:47,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 545 transitions. [2023-08-31 23:35:47,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.83333333333333) internal successors, (545), 6 states have internal predecessors, (545), 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) [2023-08-31 23:35:47,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 184.0) internal successors, (1288), 7 states have internal predecessors, (1288), 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) [2023-08-31 23:35:47,755 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 184.0) internal successors, (1288), 7 states have internal predecessors, (1288), 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) [2023-08-31 23:35:47,755 INFO L175 Difference]: Start difference. First operand has 59 places, 48 transitions, 581 flow. Second operand 6 states and 545 transitions. [2023-08-31 23:35:47,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 90 transitions, 1135 flow [2023-08-31 23:35:47,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 90 transitions, 1118 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-31 23:35:47,764 INFO L231 Difference]: Finished difference. Result has 63 places, 55 transitions, 658 flow [2023-08-31 23:35:47,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=658, PETRI_PLACES=63, PETRI_TRANSITIONS=55} [2023-08-31 23:35:47,765 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 29 predicate places. [2023-08-31 23:35:47,765 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 658 flow [2023-08-31 23:35:47,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.4) internal successors, (427), 5 states have internal predecessors, (427), 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) [2023-08-31 23:35:47,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:35:47,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:35:47,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 23:35:47,766 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:35:47,766 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:35:47,766 INFO L85 PathProgramCache]: Analyzing trace with hash -387890621, now seen corresponding path program 1 times [2023-08-31 23:35:47,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:35:47,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633011513] [2023-08-31 23:35:47,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:35:47,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:35:47,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:35:47,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:35:47,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:35:47,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633011513] [2023-08-31 23:35:47,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633011513] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:35:47,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:35:47,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:35:47,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328860287] [2023-08-31 23:35:47,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:35:47,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:35:47,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:35:47,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:35:47,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:35:47,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 184 [2023-08-31 23:35:47,897 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 55 transitions, 658 flow. Second operand has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 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) [2023-08-31 23:35:47,897 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:35:47,897 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 184 [2023-08-31 23:35:47,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:35:48,018 INFO L130 PetriNetUnfolder]: 327/639 cut-off events. [2023-08-31 23:35:48,018 INFO L131 PetriNetUnfolder]: For 4580/4580 co-relation queries the response was YES. [2023-08-31 23:35:48,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3904 conditions, 639 events. 327/639 cut-off events. For 4580/4580 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3151 event pairs, 44 based on Foata normal form. 7/646 useless extension candidates. Maximal degree in co-relation 3881. Up to 385 conditions per place. [2023-08-31 23:35:48,022 INFO L137 encePairwiseOnDemand]: 177/184 looper letters, 35 selfloop transitions, 8 changer transitions 58/101 dead transitions. [2023-08-31 23:35:48,022 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 101 transitions, 1264 flow [2023-08-31 23:35:48,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:35:48,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:35:48,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 431 transitions. [2023-08-31 23:35:48,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46847826086956523 [2023-08-31 23:35:48,025 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 431 transitions. [2023-08-31 23:35:48,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 431 transitions. [2023-08-31 23:35:48,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:35:48,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 431 transitions. [2023-08-31 23:35:48,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 86.2) internal successors, (431), 5 states have internal predecessors, (431), 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) [2023-08-31 23:35:48,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 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) [2023-08-31 23:35:48,028 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 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) [2023-08-31 23:35:48,028 INFO L175 Difference]: Start difference. First operand has 63 places, 55 transitions, 658 flow. Second operand 5 states and 431 transitions. [2023-08-31 23:35:48,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 101 transitions, 1264 flow [2023-08-31 23:35:48,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 101 transitions, 1156 flow, removed 48 selfloop flow, removed 1 redundant places. [2023-08-31 23:35:48,046 INFO L231 Difference]: Finished difference. Result has 67 places, 30 transitions, 338 flow [2023-08-31 23:35:48,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=338, PETRI_PLACES=67, PETRI_TRANSITIONS=30} [2023-08-31 23:35:48,047 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 33 predicate places. [2023-08-31 23:35:48,047 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 30 transitions, 338 flow [2023-08-31 23:35:48,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 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) [2023-08-31 23:35:48,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:35:48,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:35:48,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 23:35:48,048 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:35:48,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:35:48,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1700548252, now seen corresponding path program 1 times [2023-08-31 23:35:48,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:35:48,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541695722] [2023-08-31 23:35:48,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:35:48,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:35:48,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:35:48,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:35:48,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:35:48,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541695722] [2023-08-31 23:35:48,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541695722] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:35:48,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:35:48,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:35:48,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163374575] [2023-08-31 23:35:48,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:35:48,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 23:35:48,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:35:48,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 23:35:48,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-31 23:35:48,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 184 [2023-08-31 23:35:48,199 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 30 transitions, 338 flow. Second operand has 6 states, 6 states have (on average 85.16666666666667) internal successors, (511), 6 states have internal predecessors, (511), 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) [2023-08-31 23:35:48,199 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:35:48,199 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 184 [2023-08-31 23:35:48,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:35:48,264 INFO L130 PetriNetUnfolder]: 60/158 cut-off events. [2023-08-31 23:35:48,264 INFO L131 PetriNetUnfolder]: For 1062/1086 co-relation queries the response was YES. [2023-08-31 23:35:48,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 888 conditions, 158 events. 60/158 cut-off events. For 1062/1086 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 619 event pairs, 12 based on Foata normal form. 15/168 useless extension candidates. Maximal degree in co-relation 863. Up to 49 conditions per place. [2023-08-31 23:35:48,266 INFO L137 encePairwiseOnDemand]: 178/184 looper letters, 0 selfloop transitions, 0 changer transitions 45/45 dead transitions. [2023-08-31 23:35:48,266 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 45 transitions, 545 flow [2023-08-31 23:35:48,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 23:35:48,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 23:35:48,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 616 transitions. [2023-08-31 23:35:48,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2023-08-31 23:35:48,268 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 616 transitions. [2023-08-31 23:35:48,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 616 transitions. [2023-08-31 23:35:48,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:35:48,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 616 transitions. [2023-08-31 23:35:48,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.0) internal successors, (616), 7 states have internal predecessors, (616), 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) [2023-08-31 23:35:48,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 184.0) internal successors, (1472), 8 states have internal predecessors, (1472), 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) [2023-08-31 23:35:48,272 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 184.0) internal successors, (1472), 8 states have internal predecessors, (1472), 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) [2023-08-31 23:35:48,273 INFO L175 Difference]: Start difference. First operand has 67 places, 30 transitions, 338 flow. Second operand 7 states and 616 transitions. [2023-08-31 23:35:48,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 45 transitions, 545 flow [2023-08-31 23:35:48,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 45 transitions, 448 flow, removed 11 selfloop flow, removed 12 redundant places. [2023-08-31 23:35:48,276 INFO L231 Difference]: Finished difference. Result has 58 places, 0 transitions, 0 flow [2023-08-31 23:35:48,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=58, PETRI_TRANSITIONS=0} [2023-08-31 23:35:48,277 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 24 predicate places. [2023-08-31 23:35:48,277 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 0 transitions, 0 flow [2023-08-31 23:35:48,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.16666666666667) internal successors, (511), 6 states have internal predecessors, (511), 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) [2023-08-31 23:35:48,280 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2023-08-31 23:35:48,280 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2023-08-31 23:35:48,280 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2023-08-31 23:35:48,280 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2023-08-31 23:35:48,281 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2023-08-31 23:35:48,281 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2023-08-31 23:35:48,281 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (4 of 11 remaining) [2023-08-31 23:35:48,281 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (3 of 11 remaining) [2023-08-31 23:35:48,281 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 11 remaining) [2023-08-31 23:35:48,281 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 11 remaining) [2023-08-31 23:35:48,282 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 11 remaining) [2023-08-31 23:35:48,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-31 23:35:48,282 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:35:48,284 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-31 23:35:48,285 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-31 23:35:48,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.08 11:35:48 BasicIcfg [2023-08-31 23:35:48,287 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-31 23:35:48,288 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-31 23:35:48,288 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-31 23:35:48,288 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-31 23:35:48,289 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:35:41" (3/4) ... [2023-08-31 23:35:48,291 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-31 23:35:48,296 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-31 23:35:48,296 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-31 23:35:48,296 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-08-31 23:35:48,300 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-08-31 23:35:48,300 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-31 23:35:48,300 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-31 23:35:48,301 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-31 23:35:48,326 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-31 23:35:48,326 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-31 23:35:48,327 INFO L158 Benchmark]: Toolchain (without parser) took 8164.59ms. Allocated memory was 65.0MB in the beginning and 172.0MB in the end (delta: 107.0MB). Free memory was 31.5MB in the beginning and 54.8MB in the end (delta: -23.3MB). Peak memory consumption was 82.6MB. Max. memory is 16.1GB. [2023-08-31 23:35:48,327 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 52.4MB. Free memory is still 30.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 23:35:48,327 INFO L158 Benchmark]: CACSL2BoogieTranslator took 496.06ms. Allocated memory is still 65.0MB. Free memory was 31.2MB in the beginning and 43.4MB in the end (delta: -12.2MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. [2023-08-31 23:35:48,327 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.91ms. Allocated memory is still 65.0MB. Free memory was 43.4MB in the beginning and 41.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 23:35:48,328 INFO L158 Benchmark]: Boogie Preprocessor took 21.26ms. Allocated memory is still 65.0MB. Free memory was 41.4MB in the beginning and 39.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 23:35:48,328 INFO L158 Benchmark]: RCFGBuilder took 392.32ms. Allocated memory is still 65.0MB. Free memory was 39.8MB in the beginning and 41.7MB in the end (delta: -1.9MB). Peak memory consumption was 17.1MB. Max. memory is 16.1GB. [2023-08-31 23:35:48,328 INFO L158 Benchmark]: TraceAbstraction took 7164.52ms. Allocated memory was 65.0MB in the beginning and 172.0MB in the end (delta: 107.0MB). Free memory was 41.2MB in the beginning and 58.0MB in the end (delta: -16.7MB). Peak memory consumption was 89.5MB. Max. memory is 16.1GB. [2023-08-31 23:35:48,328 INFO L158 Benchmark]: Witness Printer took 38.32ms. Allocated memory is still 172.0MB. Free memory was 58.0MB in the beginning and 54.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 23:35:48,330 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 52.4MB. Free memory is still 30.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 496.06ms. Allocated memory is still 65.0MB. Free memory was 31.2MB in the beginning and 43.4MB in the end (delta: -12.2MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.91ms. Allocated memory is still 65.0MB. Free memory was 43.4MB in the beginning and 41.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.26ms. Allocated memory is still 65.0MB. Free memory was 41.4MB in the beginning and 39.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 392.32ms. Allocated memory is still 65.0MB. Free memory was 39.8MB in the beginning and 41.7MB in the end (delta: -1.9MB). Peak memory consumption was 17.1MB. Max. memory is 16.1GB. * TraceAbstraction took 7164.52ms. Allocated memory was 65.0MB in the beginning and 172.0MB in the end (delta: 107.0MB). Free memory was 41.2MB in the beginning and 58.0MB in the end (delta: -16.7MB). Peak memory consumption was 89.5MB. Max. memory is 16.1GB. * Witness Printer took 38.32ms. Allocated memory is still 172.0MB. Free memory was 58.0MB in the beginning and 54.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 95 PlacesBefore, 34 PlacesAfterwards, 87 TransitionsBefore, 24 TransitionsAfterwards, 1512 CoEnabledTransitionPairs, 6 FixpointIterations, 28 TrivialSequentialCompositions, 50 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 90 TotalNumberOfCompositions, 3110 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1607, independent: 1507, independent conditional: 0, independent unconditional: 1507, dependent: 100, dependent conditional: 0, dependent unconditional: 100, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 870, independent: 824, independent conditional: 0, independent unconditional: 824, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1607, independent: 683, independent conditional: 0, independent unconditional: 683, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 870, unknown conditional: 0, unknown unconditional: 870] , Statistics on independence cache: Total cache size (in pairs): 49, Positive cache size: 39, Positive conditional cache size: 0, Positive unconditional cache size: 39, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, 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: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 776]: 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 7 procedures, 117 locations, 11 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: 7.0s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 437 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 287 mSDsluCounter, 116 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 64 mSDsCounter, 78 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 868 IncrementalHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 78 mSolverCounterUnsat, 52 mSDtfsCounter, 868 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=658occurred in iteration=11, InterpolantAutomatonStates: 59, 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, 1.8s InterpolantComputationTime, 138 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 125 ConstructedInterpolants, 0 QuantifiedInterpolants, 743 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-31 23:35:48,353 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