./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi000_tso.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi000_tso.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 5128c539cd3051e20c09e1924eb0951d5be697be251e10d3c281464ed4c436cd --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 20:31:32,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 20:31:32,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 20:31:32,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 20:31:32,303 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 20:31:32,305 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 20:31:32,307 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 20:31:32,310 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 20:31:32,312 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 20:31:32,316 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 20:31:32,317 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 20:31:32,318 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 20:31:32,318 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 20:31:32,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 20:31:32,321 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 20:31:32,324 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 20:31:32,325 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 20:31:32,326 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 20:31:32,327 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 20:31:32,330 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 20:31:32,338 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 20:31:32,342 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 20:31:32,342 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 20:31:32,343 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 20:31:32,346 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 20:31:32,349 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 20:31:32,349 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 20:31:32,350 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 20:31:32,351 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 20:31:32,352 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 20:31:32,354 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 20:31:32,355 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 20:31:32,356 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 20:31:32,357 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 20:31:32,358 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 20:31:32,358 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 20:31:32,359 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 20:31:32,360 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 20:31:32,360 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 20:31:32,361 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 20:31:32,361 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 20:31:32,362 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 20:31:32,390 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 20:31:32,390 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 20:31:32,391 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 20:31:32,391 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 20:31:32,392 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 20:31:32,392 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 20:31:32,393 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 20:31:32,393 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 20:31:32,393 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 20:31:32,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 20:31:32,394 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 20:31:32,394 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 20:31:32,395 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 20:31:32,395 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 20:31:32,395 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 20:31:32,395 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 20:31:32,395 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 20:31:32,395 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 20:31:32,396 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 20:31:32,396 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 20:31:32,396 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 20:31:32,396 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 20:31:32,396 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 20:31:32,397 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 20:31:32,397 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 20:31:32,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:31:32,397 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 20:31:32,398 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 20:31:32,398 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 20:31:32,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 20:31:32,398 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 20:31:32,398 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 20:31:32,399 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 20:31:32,399 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 20:31:32,399 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5128c539cd3051e20c09e1924eb0951d5be697be251e10d3c281464ed4c436cd Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 20:31:32,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 20:31:32,729 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 20:31:32,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 20:31:32,733 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 20:31:32,734 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 20:31:32,735 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi000_tso.i [2023-08-29 20:31:33,897 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 20:31:34,103 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 20:31:34,104 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi000_tso.i [2023-08-29 20:31:34,119 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fff96d48b/8997769a39a2418596d93e9797077789/FLAGeb949f886 [2023-08-29 20:31:34,130 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fff96d48b/8997769a39a2418596d93e9797077789 [2023-08-29 20:31:34,132 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 20:31:34,134 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 20:31:34,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 20:31:34,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 20:31:34,137 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 20:31:34,138 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:31:34" (1/1) ... [2023-08-29 20:31:34,139 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52f92f62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:31:34, skipping insertion in model container [2023-08-29 20:31:34,139 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:31:34" (1/1) ... [2023-08-29 20:31:34,144 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 20:31:34,171 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 20:31:34,311 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/rfi000_tso.i[944,957] [2023-08-29 20:31:34,566 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:31:34,582 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 20:31:34,593 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/rfi000_tso.i[944,957] [2023-08-29 20:31:34,665 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:31:34,704 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:31:34,705 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:31:34,711 INFO L208 MainTranslator]: Completed translation [2023-08-29 20:31:34,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:31:34 WrapperNode [2023-08-29 20:31:34,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 20:31:34,712 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 20:31:34,713 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 20:31:34,713 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 20:31:34,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:31:34" (1/1) ... [2023-08-29 20:31:34,739 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:31:34" (1/1) ... [2023-08-29 20:31:34,767 INFO L138 Inliner]: procedures = 175, calls = 45, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 170 [2023-08-29 20:31:34,767 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 20:31:34,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 20:31:34,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 20:31:34,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 20:31:34,776 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:31:34" (1/1) ... [2023-08-29 20:31:34,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:31:34" (1/1) ... [2023-08-29 20:31:34,780 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:31:34" (1/1) ... [2023-08-29 20:31:34,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:31:34" (1/1) ... [2023-08-29 20:31:34,788 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:31:34" (1/1) ... [2023-08-29 20:31:34,789 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:31:34" (1/1) ... [2023-08-29 20:31:34,792 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:31:34" (1/1) ... [2023-08-29 20:31:34,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:31:34" (1/1) ... [2023-08-29 20:31:34,800 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 20:31:34,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 20:31:34,801 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 20:31:34,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 20:31:34,802 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:31:34" (1/1) ... [2023-08-29 20:31:34,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:31:34,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 20:31:34,834 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 20:31:34,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 20:31:34,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 20:31:34,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-29 20:31:34,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 20:31:34,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 20:31:34,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 20:31:34,880 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-29 20:31:34,880 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-29 20:31:34,880 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-29 20:31:34,880 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-29 20:31:34,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 20:31:34,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-29 20:31:34,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 20:31:34,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 20:31:34,882 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 20:31:35,051 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 20:31:35,053 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 20:31:35,341 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 20:31:35,531 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 20:31:35,531 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 20:31:35,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:31:35 BoogieIcfgContainer [2023-08-29 20:31:35,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 20:31:35,535 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 20:31:35,535 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 20:31:35,538 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 20:31:35,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 08:31:34" (1/3) ... [2023-08-29 20:31:35,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79f5f1ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:31:35, skipping insertion in model container [2023-08-29 20:31:35,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:31:34" (2/3) ... [2023-08-29 20:31:35,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79f5f1ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:31:35, skipping insertion in model container [2023-08-29 20:31:35,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:31:35" (3/3) ... [2023-08-29 20:31:35,540 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi000_tso.i [2023-08-29 20:31:35,556 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 20:31:35,556 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-29 20:31:35,556 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 20:31:35,601 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 20:31:35,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 98 transitions, 206 flow [2023-08-29 20:31:35,692 INFO L130 PetriNetUnfolder]: 2/96 cut-off events. [2023-08-29 20:31:35,692 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:31:35,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 96 events. 2/96 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2023-08-29 20:31:35,699 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 98 transitions, 206 flow [2023-08-29 20:31:35,704 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 96 transitions, 198 flow [2023-08-29 20:31:35,707 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 20:31:35,727 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 96 transitions, 198 flow [2023-08-29 20:31:35,730 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 96 transitions, 198 flow [2023-08-29 20:31:35,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 96 transitions, 198 flow [2023-08-29 20:31:35,764 INFO L130 PetriNetUnfolder]: 2/96 cut-off events. [2023-08-29 20:31:35,765 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:31:35,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 96 events. 2/96 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2023-08-29 20:31:35,774 INFO L119 LiptonReduction]: Number of co-enabled transitions 1286 [2023-08-29 20:31:39,537 INFO L134 LiptonReduction]: Checked pairs total: 4279 [2023-08-29 20:31:39,537 INFO L136 LiptonReduction]: Total number of compositions: 88 [2023-08-29 20:31:39,549 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 20:31:39,554 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;@3146e197, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 20:31:39,555 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-08-29 20:31:39,556 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 20:31:39,556 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:31:39,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:31:39,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 20:31:39,557 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 20:31:39,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:31:39,561 INFO L85 PathProgramCache]: Analyzing trace with hash 504, now seen corresponding path program 1 times [2023-08-29 20:31:39,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:31:39,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101459898] [2023-08-29 20:31:39,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:31:39,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:31:39,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:31:39,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:31:39,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:31:39,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101459898] [2023-08-29 20:31:39,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101459898] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:31:39,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:31:39,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 20:31:39,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104143707] [2023-08-29 20:31:39,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:31:39,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 20:31:39,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:31:39,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 20:31:39,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 20:31:39,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 186 [2023-08-29 20:31:39,687 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 60 flow. Second operand has 2 states, 2 states have (on average 85.5) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:39,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:31:39,687 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 186 [2023-08-29 20:31:39,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:31:39,843 INFO L130 PetriNetUnfolder]: 391/658 cut-off events. [2023-08-29 20:31:39,843 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 20:31:39,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1328 conditions, 658 events. 391/658 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2776 event pairs, 391 based on Foata normal form. 32/561 useless extension candidates. Maximal degree in co-relation 1318. Up to 657 conditions per place. [2023-08-29 20:31:39,850 INFO L137 encePairwiseOnDemand]: 181/186 looper letters, 21 selfloop transitions, 0 changer transitions 0/22 dead transitions. [2023-08-29 20:31:39,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 22 transitions, 92 flow [2023-08-29 20:31:39,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 20:31:39,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 20:31:39,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 196 transitions. [2023-08-29 20:31:39,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5268817204301075 [2023-08-29 20:31:39,871 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 196 transitions. [2023-08-29 20:31:39,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 196 transitions. [2023-08-29 20:31:39,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:31:39,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 196 transitions. [2023-08-29 20:31:39,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 98.0) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:39,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:39,882 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:39,884 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 60 flow. Second operand 2 states and 196 transitions. [2023-08-29 20:31:39,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 22 transitions, 92 flow [2023-08-29 20:31:39,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 22 transitions, 90 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 20:31:39,888 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 48 flow [2023-08-29 20:31:39,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=48, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2023-08-29 20:31:39,892 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -5 predicate places. [2023-08-29 20:31:39,892 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 48 flow [2023-08-29 20:31:39,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 85.5) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:39,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:31:39,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 20:31:39,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 20:31:39,893 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 20:31:39,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:31:39,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1944279382, now seen corresponding path program 1 times [2023-08-29 20:31:39,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:31:39,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023860965] [2023-08-29 20:31:39,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:31:39,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:31:39,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:31:40,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:31:40,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:31:40,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023860965] [2023-08-29 20:31:40,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023860965] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:31:40,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:31:40,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 20:31:40,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861831852] [2023-08-29 20:31:40,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:31:40,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:31:40,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:31:40,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:31:40,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:31:40,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 186 [2023-08-29 20:31:40,281 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:40,281 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:31:40,282 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 186 [2023-08-29 20:31:40,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:31:40,495 INFO L130 PetriNetUnfolder]: 339/574 cut-off events. [2023-08-29 20:31:40,496 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:31:40,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1159 conditions, 574 events. 339/574 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2372 event pairs, 79 based on Foata normal form. 0/489 useless extension candidates. Maximal degree in co-relation 1156. Up to 421 conditions per place. [2023-08-29 20:31:40,500 INFO L137 encePairwiseOnDemand]: 183/186 looper letters, 24 selfloop transitions, 2 changer transitions 4/31 dead transitions. [2023-08-29 20:31:40,500 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 31 transitions, 126 flow [2023-08-29 20:31:40,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:31:40,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:31:40,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2023-08-29 20:31:40,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.507168458781362 [2023-08-29 20:31:40,503 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2023-08-29 20:31:40,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2023-08-29 20:31:40,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:31:40,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2023-08-29 20:31:40,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:40,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:40,508 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:40,508 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 48 flow. Second operand 3 states and 283 transitions. [2023-08-29 20:31:40,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 31 transitions, 126 flow [2023-08-29 20:31:40,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 31 transitions, 126 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 20:31:40,509 INFO L231 Difference]: Finished difference. Result has 29 places, 19 transitions, 46 flow [2023-08-29 20:31:40,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=29, PETRI_TRANSITIONS=19} [2023-08-29 20:31:40,510 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -4 predicate places. [2023-08-29 20:31:40,510 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 19 transitions, 46 flow [2023-08-29 20:31:40,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:40,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:31:40,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:31:40,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 20:31:40,511 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 20:31:40,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:31:40,512 INFO L85 PathProgramCache]: Analyzing trace with hash 143074765, now seen corresponding path program 1 times [2023-08-29 20:31:40,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:31:40,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401873883] [2023-08-29 20:31:40,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:31:40,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:31:40,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:31:40,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:31:40,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:31:40,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401873883] [2023-08-29 20:31:40,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401873883] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:31:40,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:31:40,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 20:31:40,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873917858] [2023-08-29 20:31:40,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:31:40,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 20:31:40,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:31:40,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 20:31:40,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 20:31:40,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 186 [2023-08-29 20:31:40,868 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 19 transitions, 46 flow. Second operand has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:40,869 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:31:40,869 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 186 [2023-08-29 20:31:40,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:31:40,982 INFO L130 PetriNetUnfolder]: 204/354 cut-off events. [2023-08-29 20:31:40,982 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-29 20:31:40,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 742 conditions, 354 events. 204/354 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1258 event pairs, 166 based on Foata normal form. 0/354 useless extension candidates. Maximal degree in co-relation 738. Up to 348 conditions per place. [2023-08-29 20:31:40,985 INFO L137 encePairwiseOnDemand]: 183/186 looper letters, 18 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2023-08-29 20:31:40,985 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 21 transitions, 90 flow [2023-08-29 20:31:40,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 20:31:40,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 20:31:40,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 321 transitions. [2023-08-29 20:31:40,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4314516129032258 [2023-08-29 20:31:40,989 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 321 transitions. [2023-08-29 20:31:40,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 321 transitions. [2023-08-29 20:31:40,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:31:40,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 321 transitions. [2023-08-29 20:31:40,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:40,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 186.0) internal successors, (930), 5 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:40,995 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 186.0) internal successors, (930), 5 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:40,995 INFO L175 Difference]: Start difference. First operand has 29 places, 19 transitions, 46 flow. Second operand 4 states and 321 transitions. [2023-08-29 20:31:40,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 21 transitions, 90 flow [2023-08-29 20:31:40,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 21 transitions, 86 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 20:31:40,997 INFO L231 Difference]: Finished difference. Result has 27 places, 18 transitions, 44 flow [2023-08-29 20:31:40,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=44, PETRI_PLACES=27, PETRI_TRANSITIONS=18} [2023-08-29 20:31:40,998 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -6 predicate places. [2023-08-29 20:31:41,001 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 18 transitions, 44 flow [2023-08-29 20:31:41,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:41,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:31:41,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:31:41,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 20:31:41,003 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 20:31:41,004 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:31:41,004 INFO L85 PathProgramCache]: Analyzing trace with hash 143074706, now seen corresponding path program 1 times [2023-08-29 20:31:41,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:31:41,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163318708] [2023-08-29 20:31:41,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:31:41,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:31:41,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:31:42,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:31:42,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:31:42,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163318708] [2023-08-29 20:31:42,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163318708] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:31:42,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:31:42,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:31:42,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615362569] [2023-08-29 20:31:42,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:31:42,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:31:42,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:31:42,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:31:42,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:31:42,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 186 [2023-08-29 20:31:42,048 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 72.6) internal successors, (363), 5 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:42,048 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:31:42,048 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 186 [2023-08-29 20:31:42,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:31:42,326 INFO L130 PetriNetUnfolder]: 259/458 cut-off events. [2023-08-29 20:31:42,326 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-29 20:31:42,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 938 conditions, 458 events. 259/458 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1689 event pairs, 102 based on Foata normal form. 38/496 useless extension candidates. Maximal degree in co-relation 934. Up to 194 conditions per place. [2023-08-29 20:31:42,328 INFO L137 encePairwiseOnDemand]: 178/186 looper letters, 24 selfloop transitions, 6 changer transitions 19/49 dead transitions. [2023-08-29 20:31:42,328 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 49 transitions, 204 flow [2023-08-29 20:31:42,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 20:31:42,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 20:31:42,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 549 transitions. [2023-08-29 20:31:42,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4216589861751152 [2023-08-29 20:31:42,331 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 549 transitions. [2023-08-29 20:31:42,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 549 transitions. [2023-08-29 20:31:42,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:31:42,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 549 transitions. [2023-08-29 20:31:42,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.42857142857143) internal successors, (549), 7 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:42,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 186.0) internal successors, (1488), 8 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:42,335 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 186.0) internal successors, (1488), 8 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:42,335 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 44 flow. Second operand 7 states and 549 transitions. [2023-08-29 20:31:42,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 49 transitions, 204 flow [2023-08-29 20:31:42,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 49 transitions, 201 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 20:31:42,337 INFO L231 Difference]: Finished difference. Result has 37 places, 22 transitions, 97 flow [2023-08-29 20:31:42,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=41, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=97, PETRI_PLACES=37, PETRI_TRANSITIONS=22} [2023-08-29 20:31:42,338 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2023-08-29 20:31:42,338 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 22 transitions, 97 flow [2023-08-29 20:31:42,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.6) internal successors, (363), 5 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:42,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:31:42,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:31:42,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 20:31:42,339 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 20:31:42,339 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:31:42,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1436627916, now seen corresponding path program 1 times [2023-08-29 20:31:42,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:31:42,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525140614] [2023-08-29 20:31:42,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:31:42,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:31:42,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:31:43,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:31:43,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:31:43,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525140614] [2023-08-29 20:31:43,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525140614] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:31:43,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:31:43,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 20:31:43,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468010625] [2023-08-29 20:31:43,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:31:43,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 20:31:43,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:31:43,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 20:31:43,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-08-29 20:31:43,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 186 [2023-08-29 20:31:43,400 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 22 transitions, 97 flow. Second operand has 9 states, 9 states have (on average 73.33333333333333) internal successors, (660), 9 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:43,401 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:31:43,401 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 186 [2023-08-29 20:31:43,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:31:43,606 INFO L130 PetriNetUnfolder]: 173/325 cut-off events. [2023-08-29 20:31:43,606 INFO L131 PetriNetUnfolder]: For 313/322 co-relation queries the response was YES. [2023-08-29 20:31:43,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 986 conditions, 325 events. 173/325 cut-off events. For 313/322 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1175 event pairs, 105 based on Foata normal form. 25/347 useless extension candidates. Maximal degree in co-relation 977. Up to 258 conditions per place. [2023-08-29 20:31:43,609 INFO L137 encePairwiseOnDemand]: 178/186 looper letters, 28 selfloop transitions, 7 changer transitions 10/47 dead transitions. [2023-08-29 20:31:43,609 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 47 transitions, 276 flow [2023-08-29 20:31:43,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 20:31:43,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 20:31:43,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 547 transitions. [2023-08-29 20:31:43,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201228878648233 [2023-08-29 20:31:43,611 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 547 transitions. [2023-08-29 20:31:43,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 547 transitions. [2023-08-29 20:31:43,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:31:43,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 547 transitions. [2023-08-29 20:31:43,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.14285714285714) internal successors, (547), 7 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:43,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 186.0) internal successors, (1488), 8 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:43,616 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 186.0) internal successors, (1488), 8 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:43,616 INFO L175 Difference]: Start difference. First operand has 37 places, 22 transitions, 97 flow. Second operand 7 states and 547 transitions. [2023-08-29 20:31:43,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 47 transitions, 276 flow [2023-08-29 20:31:43,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 47 transitions, 269 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-29 20:31:43,620 INFO L231 Difference]: Finished difference. Result has 43 places, 27 transitions, 141 flow [2023-08-29 20:31:43,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=141, PETRI_PLACES=43, PETRI_TRANSITIONS=27} [2023-08-29 20:31:43,623 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 10 predicate places. [2023-08-29 20:31:43,623 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 27 transitions, 141 flow [2023-08-29 20:31:43,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 73.33333333333333) internal successors, (660), 9 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:43,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:31:43,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:31:43,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 20:31:43,624 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 20:31:43,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:31:43,625 INFO L85 PathProgramCache]: Analyzing trace with hash 153529822, now seen corresponding path program 1 times [2023-08-29 20:31:43,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:31:43,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152432380] [2023-08-29 20:31:43,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:31:43,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:31:43,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:31:44,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:31:44,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:31:44,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152432380] [2023-08-29 20:31:44,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152432380] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:31:44,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:31:44,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:31:44,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155603345] [2023-08-29 20:31:44,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:31:44,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 20:31:44,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:31:44,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 20:31:44,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 20:31:44,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 186 [2023-08-29 20:31:44,134 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 27 transitions, 141 flow. Second operand has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:44,134 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:31:44,134 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 186 [2023-08-29 20:31:44,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:31:44,236 INFO L130 PetriNetUnfolder]: 147/274 cut-off events. [2023-08-29 20:31:44,236 INFO L131 PetriNetUnfolder]: For 289/295 co-relation queries the response was YES. [2023-08-29 20:31:44,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 970 conditions, 274 events. 147/274 cut-off events. For 289/295 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 931 event pairs, 58 based on Foata normal form. 10/281 useless extension candidates. Maximal degree in co-relation 956. Up to 243 conditions per place. [2023-08-29 20:31:44,238 INFO L137 encePairwiseOnDemand]: 180/186 looper letters, 28 selfloop transitions, 7 changer transitions 0/37 dead transitions. [2023-08-29 20:31:44,239 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 37 transitions, 245 flow [2023-08-29 20:31:44,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 20:31:44,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 20:31:44,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 346 transitions. [2023-08-29 20:31:44,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4650537634408602 [2023-08-29 20:31:44,240 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 346 transitions. [2023-08-29 20:31:44,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 346 transitions. [2023-08-29 20:31:44,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:31:44,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 346 transitions. [2023-08-29 20:31:44,242 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) [2023-08-29 20:31:44,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 186.0) internal successors, (930), 5 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:44,243 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 186.0) internal successors, (930), 5 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:44,243 INFO L175 Difference]: Start difference. First operand has 43 places, 27 transitions, 141 flow. Second operand 4 states and 346 transitions. [2023-08-29 20:31:44,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 37 transitions, 245 flow [2023-08-29 20:31:44,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 37 transitions, 233 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-29 20:31:44,246 INFO L231 Difference]: Finished difference. Result has 42 places, 31 transitions, 178 flow [2023-08-29 20:31:44,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=178, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2023-08-29 20:31:44,247 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2023-08-29 20:31:44,247 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 178 flow [2023-08-29 20:31:44,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:44,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:31:44,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:31:44,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 20:31:44,248 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 20:31:44,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:31:44,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1531017426, now seen corresponding path program 2 times [2023-08-29 20:31:44,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:31:44,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144944431] [2023-08-29 20:31:44,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:31:44,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:31:44,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:31:44,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:31:44,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:31:44,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144944431] [2023-08-29 20:31:44,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144944431] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:31:44,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:31:44,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 20:31:44,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772073281] [2023-08-29 20:31:44,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:31:44,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:31:44,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:31:44,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:31:44,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:31:44,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 186 [2023-08-29 20:31:44,486 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 31 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:44,487 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:31:44,487 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 186 [2023-08-29 20:31:44,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:31:44,549 INFO L130 PetriNetUnfolder]: 59/139 cut-off events. [2023-08-29 20:31:44,549 INFO L131 PetriNetUnfolder]: For 305/308 co-relation queries the response was YES. [2023-08-29 20:31:44,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 543 conditions, 139 events. 59/139 cut-off events. For 305/308 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 406 event pairs, 20 based on Foata normal form. 17/154 useless extension candidates. Maximal degree in co-relation 530. Up to 90 conditions per place. [2023-08-29 20:31:44,551 INFO L137 encePairwiseOnDemand]: 182/186 looper letters, 35 selfloop transitions, 4 changer transitions 0/41 dead transitions. [2023-08-29 20:31:44,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 41 transitions, 298 flow [2023-08-29 20:31:44,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:31:44,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:31:44,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 275 transitions. [2023-08-29 20:31:44,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.492831541218638 [2023-08-29 20:31:44,552 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 275 transitions. [2023-08-29 20:31:44,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 275 transitions. [2023-08-29 20:31:44,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:31:44,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 275 transitions. [2023-08-29 20:31:44,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:44,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:44,555 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:44,555 INFO L175 Difference]: Start difference. First operand has 42 places, 31 transitions, 178 flow. Second operand 3 states and 275 transitions. [2023-08-29 20:31:44,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 41 transitions, 298 flow [2023-08-29 20:31:44,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 41 transitions, 292 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-29 20:31:44,559 INFO L231 Difference]: Finished difference. Result has 45 places, 32 transitions, 190 flow [2023-08-29 20:31:44,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=45, PETRI_TRANSITIONS=32} [2023-08-29 20:31:44,560 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 12 predicate places. [2023-08-29 20:31:44,560 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 32 transitions, 190 flow [2023-08-29 20:31:44,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:44,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:31:44,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:31:44,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 20:31:44,561 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 20:31:44,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:31:44,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1135709544, now seen corresponding path program 1 times [2023-08-29 20:31:44,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:31:44,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040431507] [2023-08-29 20:31:44,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:31:44,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:31:44,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:31:46,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:31:46,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:31:46,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040431507] [2023-08-29 20:31:46,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040431507] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:31:46,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:31:46,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-29 20:31:46,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326271150] [2023-08-29 20:31:46,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:31:46,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-29 20:31:46,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:31:46,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-29 20:31:46,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-08-29 20:31:46,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 186 [2023-08-29 20:31:46,337 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 32 transitions, 190 flow. Second operand has 10 states, 10 states have (on average 74.5) internal successors, (745), 10 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:46,337 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:31:46,337 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 186 [2023-08-29 20:31:46,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:31:46,645 INFO L130 PetriNetUnfolder]: 76/182 cut-off events. [2023-08-29 20:31:46,645 INFO L131 PetriNetUnfolder]: For 311/316 co-relation queries the response was YES. [2023-08-29 20:31:46,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 757 conditions, 182 events. 76/182 cut-off events. For 311/316 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 638 event pairs, 4 based on Foata normal form. 9/189 useless extension candidates. Maximal degree in co-relation 742. Up to 115 conditions per place. [2023-08-29 20:31:46,647 INFO L137 encePairwiseOnDemand]: 176/186 looper letters, 35 selfloop transitions, 21 changer transitions 4/62 dead transitions. [2023-08-29 20:31:46,647 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 62 transitions, 491 flow [2023-08-29 20:31:46,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-29 20:31:46,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-29 20:31:46,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 854 transitions. [2023-08-29 20:31:46,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4173998044965787 [2023-08-29 20:31:46,650 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 854 transitions. [2023-08-29 20:31:46,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 854 transitions. [2023-08-29 20:31:46,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:31:46,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 854 transitions. [2023-08-29 20:31:46,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 77.63636363636364) internal successors, (854), 11 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:46,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 186.0) internal successors, (2232), 12 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:46,655 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 186.0) internal successors, (2232), 12 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:46,656 INFO L175 Difference]: Start difference. First operand has 45 places, 32 transitions, 190 flow. Second operand 11 states and 854 transitions. [2023-08-29 20:31:46,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 62 transitions, 491 flow [2023-08-29 20:31:46,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 62 transitions, 473 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-29 20:31:46,660 INFO L231 Difference]: Finished difference. Result has 59 places, 44 transitions, 337 flow [2023-08-29 20:31:46,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=337, PETRI_PLACES=59, PETRI_TRANSITIONS=44} [2023-08-29 20:31:46,661 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 26 predicate places. [2023-08-29 20:31:46,662 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 44 transitions, 337 flow [2023-08-29 20:31:46,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 74.5) internal successors, (745), 10 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:46,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:31:46,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:31:46,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 20:31:46,663 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 20:31:46,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:31:46,666 INFO L85 PathProgramCache]: Analyzing trace with hash -466761292, now seen corresponding path program 2 times [2023-08-29 20:31:46,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:31:46,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791245069] [2023-08-29 20:31:46,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:31:46,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:31:46,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:31:47,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:31:47,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:31:47,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791245069] [2023-08-29 20:31:47,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791245069] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:31:47,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:31:47,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 20:31:47,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093633971] [2023-08-29 20:31:47,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:31:47,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 20:31:47,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:31:47,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 20:31:47,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-08-29 20:31:47,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 186 [2023-08-29 20:31:47,923 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 44 transitions, 337 flow. Second operand has 9 states, 9 states have (on average 74.66666666666667) internal successors, (672), 9 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:47,923 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:31:47,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 186 [2023-08-29 20:31:47,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:31:48,263 INFO L130 PetriNetUnfolder]: 106/254 cut-off events. [2023-08-29 20:31:48,263 INFO L131 PetriNetUnfolder]: For 735/742 co-relation queries the response was YES. [2023-08-29 20:31:48,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1197 conditions, 254 events. 106/254 cut-off events. For 735/742 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1074 event pairs, 18 based on Foata normal form. 12/263 useless extension candidates. Maximal degree in co-relation 1177. Up to 101 conditions per place. [2023-08-29 20:31:48,265 INFO L137 encePairwiseOnDemand]: 178/186 looper letters, 45 selfloop transitions, 18 changer transitions 14/79 dead transitions. [2023-08-29 20:31:48,265 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 79 transitions, 744 flow [2023-08-29 20:31:48,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 20:31:48,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 20:31:48,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 635 transitions. [2023-08-29 20:31:48,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.426747311827957 [2023-08-29 20:31:48,268 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 635 transitions. [2023-08-29 20:31:48,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 635 transitions. [2023-08-29 20:31:48,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:31:48,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 635 transitions. [2023-08-29 20:31:48,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 79.375) internal successors, (635), 8 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:48,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 186.0) internal successors, (1674), 9 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:48,273 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 186.0) internal successors, (1674), 9 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:48,274 INFO L175 Difference]: Start difference. First operand has 59 places, 44 transitions, 337 flow. Second operand 8 states and 635 transitions. [2023-08-29 20:31:48,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 79 transitions, 744 flow [2023-08-29 20:31:48,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 79 transitions, 700 flow, removed 19 selfloop flow, removed 4 redundant places. [2023-08-29 20:31:48,278 INFO L231 Difference]: Finished difference. Result has 64 places, 46 transitions, 367 flow [2023-08-29 20:31:48,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=367, PETRI_PLACES=64, PETRI_TRANSITIONS=46} [2023-08-29 20:31:48,279 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 31 predicate places. [2023-08-29 20:31:48,280 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 46 transitions, 367 flow [2023-08-29 20:31:48,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 74.66666666666667) internal successors, (672), 9 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:48,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:31:48,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:31:48,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 20:31:48,282 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 20:31:48,282 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:31:48,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1377209262, now seen corresponding path program 3 times [2023-08-29 20:31:48,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:31:48,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918146613] [2023-08-29 20:31:48,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:31:48,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:31:48,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:31:48,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:31:48,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:31:48,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918146613] [2023-08-29 20:31:48,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918146613] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:31:48,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:31:48,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:31:48,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505932334] [2023-08-29 20:31:48,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:31:48,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 20:31:48,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:31:48,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 20:31:48,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-29 20:31:48,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 186 [2023-08-29 20:31:48,548 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 46 transitions, 367 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) [2023-08-29 20:31:48,548 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:31:48,548 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 186 [2023-08-29 20:31:48,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:31:48,609 INFO L130 PetriNetUnfolder]: 41/118 cut-off events. [2023-08-29 20:31:48,610 INFO L131 PetriNetUnfolder]: For 450/452 co-relation queries the response was YES. [2023-08-29 20:31:48,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 591 conditions, 118 events. 41/118 cut-off events. For 450/452 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 404 event pairs, 7 based on Foata normal form. 20/135 useless extension candidates. Maximal degree in co-relation 568. Up to 64 conditions per place. [2023-08-29 20:31:48,611 INFO L137 encePairwiseOnDemand]: 182/186 looper letters, 32 selfloop transitions, 5 changer transitions 16/55 dead transitions. [2023-08-29 20:31:48,611 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 55 transitions, 544 flow [2023-08-29 20:31:48,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 20:31:48,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 20:31:48,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 357 transitions. [2023-08-29 20:31:48,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4798387096774194 [2023-08-29 20:31:48,613 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 357 transitions. [2023-08-29 20:31:48,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 357 transitions. [2023-08-29 20:31:48,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:31:48,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 357 transitions. [2023-08-29 20:31:48,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:48,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 186.0) internal successors, (930), 5 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:48,616 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 186.0) internal successors, (930), 5 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:48,616 INFO L175 Difference]: Start difference. First operand has 64 places, 46 transitions, 367 flow. Second operand 4 states and 357 transitions. [2023-08-29 20:31:48,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 55 transitions, 544 flow [2023-08-29 20:31:48,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 55 transitions, 471 flow, removed 23 selfloop flow, removed 7 redundant places. [2023-08-29 20:31:48,620 INFO L231 Difference]: Finished difference. Result has 60 places, 32 transitions, 218 flow [2023-08-29 20:31:48,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=218, PETRI_PLACES=60, PETRI_TRANSITIONS=32} [2023-08-29 20:31:48,622 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 27 predicate places. [2023-08-29 20:31:48,622 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 32 transitions, 218 flow [2023-08-29 20:31:48,622 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) [2023-08-29 20:31:48,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:31:48,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:31:48,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 20:31:48,623 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 20:31:48,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:31:48,623 INFO L85 PathProgramCache]: Analyzing trace with hash 250722467, now seen corresponding path program 1 times [2023-08-29 20:31:48,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:31:48,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631178027] [2023-08-29 20:31:48,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:31:48,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:31:48,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:31:48,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:31:48,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:31:48,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631178027] [2023-08-29 20:31:48,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631178027] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:31:48,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:31:48,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:31:48,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827233566] [2023-08-29 20:31:48,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:31:48,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 20:31:48,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:31:48,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 20:31:48,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 20:31:48,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 186 [2023-08-29 20:31:48,860 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 32 transitions, 218 flow. Second operand has 4 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:48,860 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:31:48,860 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 186 [2023-08-29 20:31:48,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:31:48,935 INFO L130 PetriNetUnfolder]: 28/92 cut-off events. [2023-08-29 20:31:48,935 INFO L131 PetriNetUnfolder]: For 258/258 co-relation queries the response was YES. [2023-08-29 20:31:48,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 425 conditions, 92 events. 28/92 cut-off events. For 258/258 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 245 event pairs, 10 based on Foata normal form. 1/93 useless extension candidates. Maximal degree in co-relation 405. Up to 47 conditions per place. [2023-08-29 20:31:48,936 INFO L137 encePairwiseOnDemand]: 182/186 looper letters, 20 selfloop transitions, 2 changer transitions 25/47 dead transitions. [2023-08-29 20:31:48,936 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 47 transitions, 403 flow [2023-08-29 20:31:48,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 20:31:48,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 20:31:48,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 344 transitions. [2023-08-29 20:31:48,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46236559139784944 [2023-08-29 20:31:48,938 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 344 transitions. [2023-08-29 20:31:48,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 344 transitions. [2023-08-29 20:31:48,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:31:48,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 344 transitions. [2023-08-29 20:31:48,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:48,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 186.0) internal successors, (930), 5 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:48,941 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 186.0) internal successors, (930), 5 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:48,941 INFO L175 Difference]: Start difference. First operand has 60 places, 32 transitions, 218 flow. Second operand 4 states and 344 transitions. [2023-08-29 20:31:48,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 47 transitions, 403 flow [2023-08-29 20:31:48,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 47 transitions, 318 flow, removed 21 selfloop flow, removed 12 redundant places. [2023-08-29 20:31:48,943 INFO L231 Difference]: Finished difference. Result has 51 places, 20 transitions, 99 flow [2023-08-29 20:31:48,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=99, PETRI_PLACES=51, PETRI_TRANSITIONS=20} [2023-08-29 20:31:48,944 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 18 predicate places. [2023-08-29 20:31:48,944 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 20 transitions, 99 flow [2023-08-29 20:31:48,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:48,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:31:48,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:31:48,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-29 20:31:48,945 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 20:31:48,946 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:31:48,946 INFO L85 PathProgramCache]: Analyzing trace with hash 2100427253, now seen corresponding path program 2 times [2023-08-29 20:31:48,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:31:48,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438917248] [2023-08-29 20:31:48,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:31:48,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:31:49,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:31:50,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:31:50,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:31:50,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438917248] [2023-08-29 20:31:50,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438917248] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:31:50,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:31:50,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-29 20:31:50,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586467801] [2023-08-29 20:31:50,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:31:50,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-29 20:31:50,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:31:50,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-29 20:31:50,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-29 20:31:50,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 186 [2023-08-29 20:31:50,409 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 20 transitions, 99 flow. Second operand has 10 states, 10 states have (on average 74.7) internal successors, (747), 10 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:50,410 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:31:50,410 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 186 [2023-08-29 20:31:50,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:31:50,547 INFO L130 PetriNetUnfolder]: 6/31 cut-off events. [2023-08-29 20:31:50,547 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-08-29 20:31:50,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 31 events. 6/31 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 30 event pairs, 0 based on Foata normal form. 1/32 useless extension candidates. Maximal degree in co-relation 109. Up to 8 conditions per place. [2023-08-29 20:31:50,548 INFO L137 encePairwiseOnDemand]: 178/186 looper letters, 0 selfloop transitions, 0 changer transitions 24/24 dead transitions. [2023-08-29 20:31:50,548 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 24 transitions, 166 flow [2023-08-29 20:31:50,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-29 20:31:50,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-29 20:31:50,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 679 transitions. [2023-08-29 20:31:50,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4056152927120669 [2023-08-29 20:31:50,550 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 679 transitions. [2023-08-29 20:31:50,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 679 transitions. [2023-08-29 20:31:50,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:31:50,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 679 transitions. [2023-08-29 20:31:50,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 75.44444444444444) internal successors, (679), 9 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:50,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 186.0) internal successors, (1860), 10 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:50,554 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 186.0) internal successors, (1860), 10 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:50,554 INFO L175 Difference]: Start difference. First operand has 51 places, 20 transitions, 99 flow. Second operand 9 states and 679 transitions. [2023-08-29 20:31:50,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 24 transitions, 166 flow [2023-08-29 20:31:50,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 24 transitions, 134 flow, removed 5 selfloop flow, removed 13 redundant places. [2023-08-29 20:31:50,555 INFO L231 Difference]: Finished difference. Result has 39 places, 0 transitions, 0 flow [2023-08-29 20:31:50,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=39, PETRI_TRANSITIONS=0} [2023-08-29 20:31:50,555 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 6 predicate places. [2023-08-29 20:31:50,555 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 0 transitions, 0 flow [2023-08-29 20:31:50,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 74.7) internal successors, (747), 10 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:50,561 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONMEMORY_LEAK (9 of 10 remaining) [2023-08-29 20:31:50,561 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2023-08-29 20:31:50,562 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2023-08-29 20:31:50,562 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining) [2023-08-29 20:31:50,562 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 10 remaining) [2023-08-29 20:31:50,562 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (4 of 10 remaining) [2023-08-29 20:31:50,562 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (3 of 10 remaining) [2023-08-29 20:31:50,562 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 10 remaining) [2023-08-29 20:31:50,563 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 10 remaining) [2023-08-29 20:31:50,563 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 10 remaining) [2023-08-29 20:31:50,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-29 20:31:50,563 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1] [2023-08-29 20:31:50,567 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 20:31:50,567 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 20:31:50,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 08:31:50 BasicIcfg [2023-08-29 20:31:50,570 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 20:31:50,571 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 20:31:50,571 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 20:31:50,571 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 20:31:50,571 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:31:35" (3/4) ... [2023-08-29 20:31:50,573 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-29 20:31:50,577 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-29 20:31:50,577 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-29 20:31:50,581 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 33 nodes and edges [2023-08-29 20:31:50,581 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-08-29 20:31:50,581 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-29 20:31:50,581 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-29 20:31:50,617 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-29 20:31:50,617 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 20:31:50,618 INFO L158 Benchmark]: Toolchain (without parser) took 16484.38ms. Allocated memory was 69.2MB in the beginning and 325.1MB in the end (delta: 255.9MB). Free memory was 43.0MB in the beginning and 151.4MB in the end (delta: -108.4MB). Peak memory consumption was 146.6MB. Max. memory is 16.1GB. [2023-08-29 20:31:50,618 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 69.2MB. Free memory is still 47.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 20:31:50,618 INFO L158 Benchmark]: CACSL2BoogieTranslator took 576.99ms. Allocated memory was 69.2MB in the beginning and 86.0MB in the end (delta: 16.8MB). Free memory was 42.8MB in the beginning and 55.3MB in the end (delta: -12.6MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. [2023-08-29 20:31:50,619 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.90ms. Allocated memory is still 86.0MB. Free memory was 55.3MB in the beginning and 52.0MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 20:31:50,619 INFO L158 Benchmark]: Boogie Preprocessor took 32.75ms. Allocated memory is still 86.0MB. Free memory was 52.0MB in the beginning and 49.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 20:31:50,619 INFO L158 Benchmark]: RCFGBuilder took 732.32ms. Allocated memory is still 86.0MB. Free memory was 49.9MB in the beginning and 55.4MB in the end (delta: -5.5MB). Peak memory consumption was 20.3MB. Max. memory is 16.1GB. [2023-08-29 20:31:50,620 INFO L158 Benchmark]: TraceAbstraction took 15035.26ms. Allocated memory was 86.0MB in the beginning and 325.1MB in the end (delta: 239.1MB). Free memory was 54.9MB in the beginning and 154.6MB in the end (delta: -99.7MB). Peak memory consumption was 140.9MB. Max. memory is 16.1GB. [2023-08-29 20:31:50,620 INFO L158 Benchmark]: Witness Printer took 46.71ms. Allocated memory is still 325.1MB. Free memory was 154.6MB in the beginning and 151.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 20:31:50,622 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 69.2MB. Free memory is still 47.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 576.99ms. Allocated memory was 69.2MB in the beginning and 86.0MB in the end (delta: 16.8MB). Free memory was 42.8MB in the beginning and 55.3MB in the end (delta: -12.6MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.90ms. Allocated memory is still 86.0MB. Free memory was 55.3MB in the beginning and 52.0MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.75ms. Allocated memory is still 86.0MB. Free memory was 52.0MB in the beginning and 49.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 732.32ms. Allocated memory is still 86.0MB. Free memory was 49.9MB in the beginning and 55.4MB in the end (delta: -5.5MB). Peak memory consumption was 20.3MB. Max. memory is 16.1GB. * TraceAbstraction took 15035.26ms. Allocated memory was 86.0MB in the beginning and 325.1MB in the end (delta: 239.1MB). Free memory was 54.9MB in the beginning and 154.6MB in the end (delta: -99.7MB). Peak memory consumption was 140.9MB. Max. memory is 16.1GB. * Witness Printer took 46.71ms. Allocated memory is still 325.1MB. Free memory was 154.6MB in the beginning and 151.4MB 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: 3.8s, 101 PlacesBefore, 33 PlacesAfterwards, 96 TransitionsBefore, 27 TransitionsAfterwards, 1286 CoEnabledTransitionPairs, 7 FixpointIterations, 40 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 88 TotalNumberOfCompositions, 4279 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2038, independent: 1848, independent conditional: 0, independent unconditional: 1848, dependent: 190, dependent conditional: 0, dependent unconditional: 190, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 710, independent: 673, independent conditional: 0, independent unconditional: 673, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2038, independent: 1175, independent conditional: 0, independent unconditional: 1175, dependent: 153, dependent conditional: 0, dependent unconditional: 153, unknown: 710, unknown conditional: 0, unknown unconditional: 710] , Statistics on independence cache: Total cache size (in pairs): 86, Positive cache size: 71, Positive conditional cache size: 0, Positive unconditional cache size: 71, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -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: 824]: 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 5 procedures, 118 locations, 10 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 14.9s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 482 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 346 mSDsluCounter, 506 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 469 mSDsCounter, 152 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1464 IncrementalHoareTripleChecker+Invalid, 1616 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 152 mSolverCounterUnsat, 37 mSDtfsCounter, 1464 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=367occurred in iteration=9, InterpolantAutomatonStates: 66, 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, 0.4s SatisfiabilityAnalysisTime, 7.6s InterpolantComputationTime, 142 NumberOfCodeBlocks, 142 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 130 ConstructedInterpolants, 0 QuantifiedInterpolants, 1722 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-29 20:31:50,652 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