./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe030_tso.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe030_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 1730fa7f98e17ee8b58920ef3daf63ee88225f1b42924032a532b5f5db33fba5 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 23:44:25,363 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 23:44:25,365 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 23:44:25,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 23:44:25,412 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 23:44:25,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 23:44:25,417 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 23:44:25,420 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 23:44:25,421 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 23:44:25,426 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 23:44:25,427 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 23:44:25,429 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 23:44:25,429 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 23:44:25,431 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 23:44:25,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 23:44:25,437 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 23:44:25,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 23:44:25,439 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 23:44:25,441 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 23:44:25,444 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 23:44:25,447 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 23:44:25,455 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 23:44:25,457 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 23:44:25,457 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 23:44:25,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 23:44:25,463 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 23:44:25,463 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 23:44:25,465 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 23:44:25,465 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 23:44:25,466 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 23:44:25,467 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 23:44:25,467 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 23:44:25,469 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 23:44:25,470 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 23:44:25,471 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 23:44:25,471 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 23:44:25,471 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 23:44:25,472 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 23:44:25,472 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 23:44:25,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 23:44:25,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 23:44:25,475 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-31 23:44:25,508 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 23:44:25,508 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 23:44:25,509 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 23:44:25,509 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 23:44:25,510 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 23:44:25,510 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 23:44:25,511 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 23:44:25,511 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 23:44:25,511 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 23:44:25,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 23:44:25,512 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 23:44:25,512 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 23:44:25,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 23:44:25,513 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 23:44:25,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 23:44:25,513 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-31 23:44:25,513 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-31 23:44:25,513 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-31 23:44:25,514 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 23:44:25,514 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-31 23:44:25,514 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 23:44:25,514 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 23:44:25,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 23:44:25,515 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 23:44:25,515 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 23:44:25,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:44:25,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 23:44:25,515 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 23:44:25,516 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 23:44:25,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 23:44:25,516 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 23:44:25,516 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 23:44:25,516 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 23:44:25,517 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 23:44:25,517 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1730fa7f98e17ee8b58920ef3daf63ee88225f1b42924032a532b5f5db33fba5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 23:44:25,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 23:44:25,856 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 23:44:25,858 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 23:44:25,859 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 23:44:25,859 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 23:44:25,861 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe030_tso.i [2023-08-31 23:44:27,162 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 23:44:27,396 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 23:44:27,397 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe030_tso.i [2023-08-31 23:44:27,409 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff58d600d/a62c4deec0a6403ebae671855651db14/FLAG5567bc36b [2023-08-31 23:44:27,419 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff58d600d/a62c4deec0a6403ebae671855651db14 [2023-08-31 23:44:27,421 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 23:44:27,422 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 23:44:27,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 23:44:27,424 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 23:44:27,427 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 23:44:27,428 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:44:27" (1/1) ... [2023-08-31 23:44:27,429 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@130534bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:44:27, skipping insertion in model container [2023-08-31 23:44:27,429 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:44:27" (1/1) ... [2023-08-31 23:44:27,435 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 23:44:27,471 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 23:44:27,591 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/safe030_tso.i[945,958] [2023-08-31 23:44:27,770 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:44:27,780 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 23:44:27,796 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/safe030_tso.i[945,958] [2023-08-31 23:44:27,841 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:44:27,876 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:44:27,877 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:44:27,883 INFO L208 MainTranslator]: Completed translation [2023-08-31 23:44:27,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:44:27 WrapperNode [2023-08-31 23:44:27,883 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 23:44:27,885 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 23:44:27,885 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 23:44:27,885 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 23:44:27,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:44:27" (1/1) ... [2023-08-31 23:44:27,920 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:44:27" (1/1) ... [2023-08-31 23:44:27,945 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 69 [2023-08-31 23:44:27,945 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 23:44:27,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 23:44:27,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 23:44:27,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 23:44:27,955 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:44:27" (1/1) ... [2023-08-31 23:44:27,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:44:27" (1/1) ... [2023-08-31 23:44:27,966 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:44:27" (1/1) ... [2023-08-31 23:44:27,967 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:44:27" (1/1) ... [2023-08-31 23:44:27,976 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:44:27" (1/1) ... [2023-08-31 23:44:27,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:44:27" (1/1) ... [2023-08-31 23:44:27,984 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:44:27" (1/1) ... [2023-08-31 23:44:27,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:44:27" (1/1) ... [2023-08-31 23:44:27,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 23:44:27,997 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 23:44:27,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 23:44:27,998 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 23:44:27,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:44:27" (1/1) ... [2023-08-31 23:44:28,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:44:28,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 23:44:28,034 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-31 23:44:28,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-31 23:44:28,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 23:44:28,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 23:44:28,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 23:44:28,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 23:44:28,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 23:44:28,075 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-31 23:44:28,075 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-31 23:44:28,075 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-31 23:44:28,075 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-31 23:44:28,075 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-31 23:44:28,075 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-31 23:44:28,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 23:44:28,076 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 23:44:28,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 23:44:28,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 23:44:28,078 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 23:44:28,261 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 23:44:28,263 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 23:44:28,475 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 23:44:28,480 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 23:44:28,482 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-31 23:44:28,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:44:28 BoogieIcfgContainer [2023-08-31 23:44:28,485 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 23:44:28,487 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 23:44:28,488 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 23:44:28,491 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 23:44:28,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 11:44:27" (1/3) ... [2023-08-31 23:44:28,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f198714 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:44:28, skipping insertion in model container [2023-08-31 23:44:28,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:44:27" (2/3) ... [2023-08-31 23:44:28,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f198714 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:44:28, skipping insertion in model container [2023-08-31 23:44:28,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:44:28" (3/3) ... [2023-08-31 23:44:28,494 INFO L112 eAbstractionObserver]: Analyzing ICFG safe030_tso.i [2023-08-31 23:44:28,521 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 23:44:28,522 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-31 23:44:28,522 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 23:44:28,572 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:44:28,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 93 transitions, 201 flow [2023-08-31 23:44:28,636 INFO L130 PetriNetUnfolder]: 2/90 cut-off events. [2023-08-31 23:44:28,637 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:44:28,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 90 events. 2/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 71. Up to 2 conditions per place. [2023-08-31 23:44:28,641 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 93 transitions, 201 flow [2023-08-31 23:44:28,644 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 86 transitions, 181 flow [2023-08-31 23:44:28,647 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:44:28,656 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 94 places, 86 transitions, 181 flow [2023-08-31 23:44:28,659 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 94 places, 86 transitions, 181 flow [2023-08-31 23:44:28,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 86 transitions, 181 flow [2023-08-31 23:44:28,685 INFO L130 PetriNetUnfolder]: 2/86 cut-off events. [2023-08-31 23:44:28,685 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:44:28,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 86 events. 2/86 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2023-08-31 23:44:28,687 INFO L119 LiptonReduction]: Number of co-enabled transitions 1512 [2023-08-31 23:44:31,001 INFO L134 LiptonReduction]: Checked pairs total: 2970 [2023-08-31 23:44:31,001 INFO L136 LiptonReduction]: Total number of compositions: 84 [2023-08-31 23:44:31,012 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 23:44:31,018 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;@65a00d8b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:44:31,018 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-31 23:44:31,021 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-31 23:44:31,023 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:44:31,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:44:31,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-31 23:44:31,025 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:44:31,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:44:31,034 INFO L85 PathProgramCache]: Analyzing trace with hash 326, now seen corresponding path program 1 times [2023-08-31 23:44:31,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:44:31,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325583005] [2023-08-31 23:44:31,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:44:31,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:44:31,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:44:31,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:44:31,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:44:31,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325583005] [2023-08-31 23:44:31,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325583005] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:44:31,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:44:31,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-31 23:44:31,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205153907] [2023-08-31 23:44:31,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:44:31,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-31 23:44:31,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:44:31,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-31 23:44:31,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-31 23:44:31,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 177 [2023-08-31 23:44:31,233 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 61 flow. Second operand has 2 states, 2 states have (on average 87.5) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:31,233 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:44:31,233 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 177 [2023-08-31 23:44:31,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:44:31,357 INFO L130 PetriNetUnfolder]: 272/449 cut-off events. [2023-08-31 23:44:31,358 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-31 23:44:31,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 912 conditions, 449 events. 272/449 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1930 event pairs, 272 based on Foata normal form. 0/409 useless extension candidates. Maximal degree in co-relation 901. Up to 433 conditions per place. [2023-08-31 23:44:31,366 INFO L137 encePairwiseOnDemand]: 170/177 looper letters, 16 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2023-08-31 23:44:31,366 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 19 transitions, 79 flow [2023-08-31 23:44:31,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-31 23:44:31,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-31 23:44:31,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 197 transitions. [2023-08-31 23:44:31,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.556497175141243 [2023-08-31 23:44:31,382 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 197 transitions. [2023-08-31 23:44:31,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 197 transitions. [2023-08-31 23:44:31,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:44:31,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 197 transitions. [2023-08-31 23:44:31,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 98.5) internal successors, (197), 2 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:31,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:31,397 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:31,398 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 61 flow. Second operand 2 states and 197 transitions. [2023-08-31 23:44:31,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 19 transitions, 79 flow [2023-08-31 23:44:31,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 19 transitions, 76 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-31 23:44:31,404 INFO L231 Difference]: Finished difference. Result has 27 places, 19 transitions, 44 flow [2023-08-31 23:44:31,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=26, 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=2, PETRI_FLOW=44, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2023-08-31 23:44:31,408 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -8 predicate places. [2023-08-31 23:44:31,409 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 44 flow [2023-08-31 23:44:31,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 87.5) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:31,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:44:31,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:44:31,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 23:44:31,412 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:44:31,414 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:44:31,414 INFO L85 PathProgramCache]: Analyzing trace with hash 739318113, now seen corresponding path program 1 times [2023-08-31 23:44:31,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:44:31,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973036529] [2023-08-31 23:44:31,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:44:31,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:44:31,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:44:31,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:44:31,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:44:31,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973036529] [2023-08-31 23:44:31,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973036529] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:44:31,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:44:31,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:44:31,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840757181] [2023-08-31 23:44:31,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:44:31,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:44:31,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:44:31,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:44:31,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:44:31,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 177 [2023-08-31 23:44:31,948 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 44 flow. Second operand has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:31,948 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:44:31,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 177 [2023-08-31 23:44:31,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:44:32,166 INFO L130 PetriNetUnfolder]: 1245/1856 cut-off events. [2023-08-31 23:44:32,166 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:44:32,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3765 conditions, 1856 events. 1245/1856 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 8364 event pairs, 349 based on Foata normal form. 0/1763 useless extension candidates. Maximal degree in co-relation 3762. Up to 719 conditions per place. [2023-08-31 23:44:32,178 INFO L137 encePairwiseOnDemand]: 167/177 looper letters, 40 selfloop transitions, 16 changer transitions 0/56 dead transitions. [2023-08-31 23:44:32,178 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 56 transitions, 234 flow [2023-08-31 23:44:32,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:44:32,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:44:32,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 443 transitions. [2023-08-31 23:44:32,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5005649717514125 [2023-08-31 23:44:32,184 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 443 transitions. [2023-08-31 23:44:32,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 443 transitions. [2023-08-31 23:44:32,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:44:32,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 443 transitions. [2023-08-31 23:44:32,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.6) internal successors, (443), 5 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:32,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:32,191 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:32,191 INFO L175 Difference]: Start difference. First operand has 27 places, 19 transitions, 44 flow. Second operand 5 states and 443 transitions. [2023-08-31 23:44:32,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 56 transitions, 234 flow [2023-08-31 23:44:32,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 56 transitions, 234 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 23:44:32,194 INFO L231 Difference]: Finished difference. Result has 35 places, 34 transitions, 172 flow [2023-08-31 23:44:32,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=172, PETRI_PLACES=35, PETRI_TRANSITIONS=34} [2023-08-31 23:44:32,195 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2023-08-31 23:44:32,195 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 34 transitions, 172 flow [2023-08-31 23:44:32,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:32,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:44:32,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:44:32,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 23:44:32,197 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:44:32,199 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:44:32,199 INFO L85 PathProgramCache]: Analyzing trace with hash 739318144, now seen corresponding path program 1 times [2023-08-31 23:44:32,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:44:32,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561436079] [2023-08-31 23:44:32,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:44:32,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:44:32,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:44:32,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:44:32,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:44:32,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561436079] [2023-08-31 23:44:32,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561436079] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:44:32,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:44:32,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:44:32,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632844206] [2023-08-31 23:44:32,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:44:32,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:44:32,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:44:32,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:44:32,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:44:32,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 177 [2023-08-31 23:44:32,654 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 172 flow. Second operand has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:32,655 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:44:32,655 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 177 [2023-08-31 23:44:32,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:44:32,803 INFO L130 PetriNetUnfolder]: 702/1181 cut-off events. [2023-08-31 23:44:32,804 INFO L131 PetriNetUnfolder]: For 1415/1495 co-relation queries the response was YES. [2023-08-31 23:44:32,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3573 conditions, 1181 events. 702/1181 cut-off events. For 1415/1495 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6315 event pairs, 266 based on Foata normal form. 212/1353 useless extension candidates. Maximal degree in co-relation 3566. Up to 919 conditions per place. [2023-08-31 23:44:32,813 INFO L137 encePairwiseOnDemand]: 173/177 looper letters, 27 selfloop transitions, 3 changer transitions 0/39 dead transitions. [2023-08-31 23:44:32,814 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 39 transitions, 250 flow [2023-08-31 23:44:32,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:44:32,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:44:32,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 382 transitions. [2023-08-31 23:44:32,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43163841807909603 [2023-08-31 23:44:32,815 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 382 transitions. [2023-08-31 23:44:32,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 382 transitions. [2023-08-31 23:44:32,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:44:32,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 382 transitions. [2023-08-31 23:44:32,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 76.4) internal successors, (382), 5 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:32,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:32,819 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:32,819 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 172 flow. Second operand 5 states and 382 transitions. [2023-08-31 23:44:32,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 39 transitions, 250 flow [2023-08-31 23:44:32,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 39 transitions, 250 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 23:44:32,824 INFO L231 Difference]: Finished difference. Result has 38 places, 31 transitions, 160 flow [2023-08-31 23:44:32,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=160, PETRI_PLACES=38, PETRI_TRANSITIONS=31} [2023-08-31 23:44:32,825 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2023-08-31 23:44:32,828 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 31 transitions, 160 flow [2023-08-31 23:44:32,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:32,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:44:32,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:44:32,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 23:44:32,830 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:44:32,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:44:32,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1656357279, now seen corresponding path program 1 times [2023-08-31 23:44:32,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:44:32,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327052974] [2023-08-31 23:44:32,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:44:32,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:44:32,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:44:32,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:44:33,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:44:33,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327052974] [2023-08-31 23:44:33,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327052974] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:44:33,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:44:33,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:44:33,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910304914] [2023-08-31 23:44:33,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:44:33,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:44:33,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:44:33,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:44:33,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:44:33,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 177 [2023-08-31 23:44:33,024 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 160 flow. Second operand has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:33,024 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:44:33,024 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 177 [2023-08-31 23:44:33,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:44:33,219 INFO L130 PetriNetUnfolder]: 990/1567 cut-off events. [2023-08-31 23:44:33,220 INFO L131 PetriNetUnfolder]: For 1641/1641 co-relation queries the response was YES. [2023-08-31 23:44:33,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5182 conditions, 1567 events. 990/1567 cut-off events. For 1641/1641 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 7632 event pairs, 103 based on Foata normal form. 86/1653 useless extension candidates. Maximal degree in co-relation 5174. Up to 664 conditions per place. [2023-08-31 23:44:33,227 INFO L137 encePairwiseOnDemand]: 168/177 looper letters, 35 selfloop transitions, 11 changer transitions 41/87 dead transitions. [2023-08-31 23:44:33,227 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 87 transitions, 604 flow [2023-08-31 23:44:33,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 23:44:33,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 23:44:33,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 610 transitions. [2023-08-31 23:44:33,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4923325262308313 [2023-08-31 23:44:33,230 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 610 transitions. [2023-08-31 23:44:33,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 610 transitions. [2023-08-31 23:44:33,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:44:33,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 610 transitions. [2023-08-31 23:44:33,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.14285714285714) internal successors, (610), 7 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:33,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:33,235 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:33,235 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 160 flow. Second operand 7 states and 610 transitions. [2023-08-31 23:44:33,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 87 transitions, 604 flow [2023-08-31 23:44:33,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 87 transitions, 595 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-31 23:44:33,239 INFO L231 Difference]: Finished difference. Result has 47 places, 31 transitions, 227 flow [2023-08-31 23:44:33,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=227, PETRI_PLACES=47, PETRI_TRANSITIONS=31} [2023-08-31 23:44:33,240 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 12 predicate places. [2023-08-31 23:44:33,240 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 31 transitions, 227 flow [2023-08-31 23:44:33,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:33,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:44:33,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:44:33,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 23:44:33,241 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:44:33,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:44:33,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1443983317, now seen corresponding path program 1 times [2023-08-31 23:44:33,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:44:33,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701990652] [2023-08-31 23:44:33,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:44:33,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:44:33,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:44:33,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:44:33,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:44:33,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701990652] [2023-08-31 23:44:33,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701990652] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:44:33,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:44:33,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:44:33,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353450644] [2023-08-31 23:44:33,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:44:33,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:44:33,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:44:33,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:44:33,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:44:33,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 177 [2023-08-31 23:44:33,385 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 31 transitions, 227 flow. Second operand has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:33,385 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:44:33,386 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 177 [2023-08-31 23:44:33,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:44:33,569 INFO L130 PetriNetUnfolder]: 740/1183 cut-off events. [2023-08-31 23:44:33,569 INFO L131 PetriNetUnfolder]: For 4376/4376 co-relation queries the response was YES. [2023-08-31 23:44:33,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4959 conditions, 1183 events. 740/1183 cut-off events. For 4376/4376 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5308 event pairs, 145 based on Foata normal form. 66/1249 useless extension candidates. Maximal degree in co-relation 4946. Up to 626 conditions per place. [2023-08-31 23:44:33,577 INFO L137 encePairwiseOnDemand]: 168/177 looper letters, 40 selfloop transitions, 17 changer transitions 24/81 dead transitions. [2023-08-31 23:44:33,578 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 81 transitions, 693 flow [2023-08-31 23:44:33,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 23:44:33,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 23:44:33,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 607 transitions. [2023-08-31 23:44:33,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48991121872477805 [2023-08-31 23:44:33,580 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 607 transitions. [2023-08-31 23:44:33,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 607 transitions. [2023-08-31 23:44:33,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:44:33,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 607 transitions. [2023-08-31 23:44:33,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.71428571428571) internal successors, (607), 7 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:33,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:33,585 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:33,585 INFO L175 Difference]: Start difference. First operand has 47 places, 31 transitions, 227 flow. Second operand 7 states and 607 transitions. [2023-08-31 23:44:33,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 81 transitions, 693 flow [2023-08-31 23:44:33,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 81 transitions, 627 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-31 23:44:33,599 INFO L231 Difference]: Finished difference. Result has 52 places, 40 transitions, 359 flow [2023-08-31 23:44:33,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=359, PETRI_PLACES=52, PETRI_TRANSITIONS=40} [2023-08-31 23:44:33,602 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 17 predicate places. [2023-08-31 23:44:33,602 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 40 transitions, 359 flow [2023-08-31 23:44:33,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:33,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:44:33,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:44:33,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 23:44:33,603 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:44:33,603 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:44:33,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1814304399, now seen corresponding path program 1 times [2023-08-31 23:44:33,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:44:33,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226373852] [2023-08-31 23:44:33,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:44:33,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:44:33,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:44:33,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:44:33,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:44:33,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226373852] [2023-08-31 23:44:33,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226373852] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:44:33,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:44:33,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:44:33,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124778673] [2023-08-31 23:44:33,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:44:33,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:44:33,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:44:33,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:44:33,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:44:33,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 177 [2023-08-31 23:44:33,792 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 40 transitions, 359 flow. Second operand has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:33,792 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:44:33,792 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 177 [2023-08-31 23:44:33,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:44:33,915 INFO L130 PetriNetUnfolder]: 562/958 cut-off events. [2023-08-31 23:44:33,915 INFO L131 PetriNetUnfolder]: For 4793/4842 co-relation queries the response was YES. [2023-08-31 23:44:33,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4244 conditions, 958 events. 562/958 cut-off events. For 4793/4842 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4543 event pairs, 137 based on Foata normal form. 77/1027 useless extension candidates. Maximal degree in co-relation 4226. Up to 657 conditions per place. [2023-08-31 23:44:33,925 INFO L137 encePairwiseOnDemand]: 172/177 looper letters, 35 selfloop transitions, 7 changer transitions 12/64 dead transitions. [2023-08-31 23:44:33,925 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 64 transitions, 640 flow [2023-08-31 23:44:33,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:44:33,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:44:33,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 450 transitions. [2023-08-31 23:44:33,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5084745762711864 [2023-08-31 23:44:33,927 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 450 transitions. [2023-08-31 23:44:33,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 450 transitions. [2023-08-31 23:44:33,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:44:33,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 450 transitions. [2023-08-31 23:44:33,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:33,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:33,930 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:33,931 INFO L175 Difference]: Start difference. First operand has 52 places, 40 transitions, 359 flow. Second operand 5 states and 450 transitions. [2023-08-31 23:44:33,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 64 transitions, 640 flow [2023-08-31 23:44:33,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 64 transitions, 624 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-08-31 23:44:33,941 INFO L231 Difference]: Finished difference. Result has 54 places, 45 transitions, 436 flow [2023-08-31 23:44:33,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=436, PETRI_PLACES=54, PETRI_TRANSITIONS=45} [2023-08-31 23:44:33,942 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 19 predicate places. [2023-08-31 23:44:33,942 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 45 transitions, 436 flow [2023-08-31 23:44:33,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:33,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:44:33,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:44:33,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 23:44:33,943 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:44:33,943 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:44:33,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1676032553, now seen corresponding path program 1 times [2023-08-31 23:44:33,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:44:33,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527530060] [2023-08-31 23:44:33,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:44:33,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:44:33,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:44:34,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:44:34,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:44:34,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527530060] [2023-08-31 23:44:34,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527530060] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:44:34,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:44:34,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:44:34,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469369360] [2023-08-31 23:44:34,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:44:34,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:44:34,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:44:34,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:44:34,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:44:34,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 177 [2023-08-31 23:44:34,074 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 436 flow. Second operand has 4 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) [2023-08-31 23:44:34,074 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:44:34,075 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 177 [2023-08-31 23:44:34,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:44:34,218 INFO L130 PetriNetUnfolder]: 619/1099 cut-off events. [2023-08-31 23:44:34,218 INFO L131 PetriNetUnfolder]: For 6155/6199 co-relation queries the response was YES. [2023-08-31 23:44:34,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5042 conditions, 1099 events. 619/1099 cut-off events. For 6155/6199 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5849 event pairs, 211 based on Foata normal form. 73/1138 useless extension candidates. Maximal degree in co-relation 5022. Up to 504 conditions per place. [2023-08-31 23:44:34,228 INFO L137 encePairwiseOnDemand]: 173/177 looper letters, 37 selfloop transitions, 6 changer transitions 10/64 dead transitions. [2023-08-31 23:44:34,228 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 64 transitions, 635 flow [2023-08-31 23:44:34,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:44:34,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:44:34,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 452 transitions. [2023-08-31 23:44:34,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5107344632768361 [2023-08-31 23:44:34,231 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 452 transitions. [2023-08-31 23:44:34,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 452 transitions. [2023-08-31 23:44:34,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:44:34,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 452 transitions. [2023-08-31 23:44:34,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.4) internal successors, (452), 5 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:34,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:34,234 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:34,234 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 436 flow. Second operand 5 states and 452 transitions. [2023-08-31 23:44:34,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 64 transitions, 635 flow [2023-08-31 23:44:34,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 64 transitions, 612 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-08-31 23:44:34,247 INFO L231 Difference]: Finished difference. Result has 55 places, 44 transitions, 435 flow [2023-08-31 23:44:34,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=435, PETRI_PLACES=55, PETRI_TRANSITIONS=44} [2023-08-31 23:44:34,247 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 20 predicate places. [2023-08-31 23:44:34,247 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 44 transitions, 435 flow [2023-08-31 23:44:34,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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) [2023-08-31 23:44:34,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:44:34,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:44:34,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 23:44:34,248 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:44:34,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:44:34,249 INFO L85 PathProgramCache]: Analyzing trace with hash -628674621, now seen corresponding path program 1 times [2023-08-31 23:44:34,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:44:34,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639234571] [2023-08-31 23:44:34,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:44:34,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:44:34,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:44:34,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:44:34,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:44:34,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639234571] [2023-08-31 23:44:34,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639234571] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:44:34,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:44:34,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:44:34,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079567384] [2023-08-31 23:44:34,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:44:34,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:44:34,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:44:34,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:44:34,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:44:34,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 177 [2023-08-31 23:44:34,397 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 44 transitions, 435 flow. Second operand has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:34,397 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:44:34,398 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 177 [2023-08-31 23:44:34,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:44:34,509 INFO L130 PetriNetUnfolder]: 389/773 cut-off events. [2023-08-31 23:44:34,510 INFO L131 PetriNetUnfolder]: For 4896/4992 co-relation queries the response was YES. [2023-08-31 23:44:34,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3407 conditions, 773 events. 389/773 cut-off events. For 4896/4992 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4436 event pairs, 76 based on Foata normal form. 90/842 useless extension candidates. Maximal degree in co-relation 3387. Up to 415 conditions per place. [2023-08-31 23:44:34,516 INFO L137 encePairwiseOnDemand]: 171/177 looper letters, 66 selfloop transitions, 8 changer transitions 14/103 dead transitions. [2023-08-31 23:44:34,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 103 transitions, 1152 flow [2023-08-31 23:44:34,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:44:34,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:44:34,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 450 transitions. [2023-08-31 23:44:34,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5084745762711864 [2023-08-31 23:44:34,518 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 450 transitions. [2023-08-31 23:44:34,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 450 transitions. [2023-08-31 23:44:34,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:44:34,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 450 transitions. [2023-08-31 23:44:34,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:34,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:34,522 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:34,522 INFO L175 Difference]: Start difference. First operand has 55 places, 44 transitions, 435 flow. Second operand 5 states and 450 transitions. [2023-08-31 23:44:34,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 103 transitions, 1152 flow [2023-08-31 23:44:34,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 103 transitions, 1124 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-08-31 23:44:34,531 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 479 flow [2023-08-31 23:44:34,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=479, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2023-08-31 23:44:34,532 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 21 predicate places. [2023-08-31 23:44:34,532 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 479 flow [2023-08-31 23:44:34,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:34,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:44:34,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:44:34,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 23:44:34,533 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:44:34,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:44:34,534 INFO L85 PathProgramCache]: Analyzing trace with hash 79656494, now seen corresponding path program 1 times [2023-08-31 23:44:34,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:44:34,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16896794] [2023-08-31 23:44:34,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:44:34,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:44:34,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:44:34,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:44:34,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:44:34,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16896794] [2023-08-31 23:44:34,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16896794] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:44:34,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:44:34,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:44:34,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706157109] [2023-08-31 23:44:34,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:44:34,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:44:34,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:44:34,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:44:34,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:44:34,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 177 [2023-08-31 23:44:34,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 479 flow. Second operand has 5 states, 5 states have (on average 79.6) internal successors, (398), 5 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:34,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:44:34,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 177 [2023-08-31 23:44:34,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:44:34,866 INFO L130 PetriNetUnfolder]: 746/1343 cut-off events. [2023-08-31 23:44:34,866 INFO L131 PetriNetUnfolder]: For 6643/6643 co-relation queries the response was YES. [2023-08-31 23:44:34,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7225 conditions, 1343 events. 746/1343 cut-off events. For 6643/6643 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 7394 event pairs, 112 based on Foata normal form. 28/1371 useless extension candidates. Maximal degree in co-relation 7205. Up to 561 conditions per place. [2023-08-31 23:44:34,874 INFO L137 encePairwiseOnDemand]: 168/177 looper letters, 48 selfloop transitions, 22 changer transitions 33/103 dead transitions. [2023-08-31 23:44:34,874 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 103 transitions, 1075 flow [2023-08-31 23:44:34,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 23:44:34,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 23:44:34,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 600 transitions. [2023-08-31 23:44:34,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48426150121065376 [2023-08-31 23:44:34,876 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 600 transitions. [2023-08-31 23:44:34,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 600 transitions. [2023-08-31 23:44:34,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:44:34,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 600 transitions. [2023-08-31 23:44:34,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.71428571428571) internal successors, (600), 7 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:34,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:34,880 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:34,880 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 479 flow. Second operand 7 states and 600 transitions. [2023-08-31 23:44:34,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 103 transitions, 1075 flow [2023-08-31 23:44:34,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 103 transitions, 1057 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-31 23:44:34,900 INFO L231 Difference]: Finished difference. Result has 67 places, 47 transitions, 555 flow [2023-08-31 23:44:34,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=555, PETRI_PLACES=67, PETRI_TRANSITIONS=47} [2023-08-31 23:44:34,901 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 32 predicate places. [2023-08-31 23:44:34,901 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 47 transitions, 555 flow [2023-08-31 23:44:34,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.6) internal successors, (398), 5 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:34,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:44:34,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:44:34,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 23:44:34,902 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:44:34,902 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:44:34,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1479075434, now seen corresponding path program 1 times [2023-08-31 23:44:34,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:44:34,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906790573] [2023-08-31 23:44:34,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:44:34,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:44:34,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:44:35,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:44:35,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:44:35,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906790573] [2023-08-31 23:44:35,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906790573] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:44:35,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:44:35,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:44:35,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456397481] [2023-08-31 23:44:35,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:44:35,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:44:35,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:44:35,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:44:35,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:44:35,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 177 [2023-08-31 23:44:35,031 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 47 transitions, 555 flow. Second operand has 5 states, 5 states have (on average 79.6) internal successors, (398), 5 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:35,032 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:44:35,032 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 177 [2023-08-31 23:44:35,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:44:35,199 INFO L130 PetriNetUnfolder]: 592/1115 cut-off events. [2023-08-31 23:44:35,199 INFO L131 PetriNetUnfolder]: For 8772/8772 co-relation queries the response was YES. [2023-08-31 23:44:35,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6421 conditions, 1115 events. 592/1115 cut-off events. For 8772/8772 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6051 event pairs, 120 based on Foata normal form. 32/1147 useless extension candidates. Maximal degree in co-relation 6396. Up to 573 conditions per place. [2023-08-31 23:44:35,207 INFO L137 encePairwiseOnDemand]: 168/177 looper letters, 43 selfloop transitions, 21 changer transitions 26/90 dead transitions. [2023-08-31 23:44:35,207 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 90 transitions, 1148 flow [2023-08-31 23:44:35,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 23:44:35,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 23:44:35,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 598 transitions. [2023-08-31 23:44:35,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4826472962066182 [2023-08-31 23:44:35,210 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 598 transitions. [2023-08-31 23:44:35,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 598 transitions. [2023-08-31 23:44:35,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:44:35,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 598 transitions. [2023-08-31 23:44:35,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.42857142857143) internal successors, (598), 7 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:35,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:35,214 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:35,214 INFO L175 Difference]: Start difference. First operand has 67 places, 47 transitions, 555 flow. Second operand 7 states and 598 transitions. [2023-08-31 23:44:35,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 90 transitions, 1148 flow [2023-08-31 23:44:35,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 90 transitions, 1124 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-08-31 23:44:35,231 INFO L231 Difference]: Finished difference. Result has 69 places, 43 transitions, 544 flow [2023-08-31 23:44:35,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=544, PETRI_PLACES=69, PETRI_TRANSITIONS=43} [2023-08-31 23:44:35,232 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 34 predicate places. [2023-08-31 23:44:35,232 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 43 transitions, 544 flow [2023-08-31 23:44:35,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.6) internal successors, (398), 5 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:35,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:44:35,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:44:35,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 23:44:35,233 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:44:35,234 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:44:35,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1989237128, now seen corresponding path program 1 times [2023-08-31 23:44:35,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:44:35,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733084682] [2023-08-31 23:44:35,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:44:35,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:44:35,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:44:35,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:44:35,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:44:35,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733084682] [2023-08-31 23:44:35,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733084682] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:44:35,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:44:35,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:44:35,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266685813] [2023-08-31 23:44:35,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:44:35,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:44:35,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:44:35,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:44:35,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:44:35,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 177 [2023-08-31 23:44:35,384 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 43 transitions, 544 flow. Second operand has 5 states, 5 states have (on average 84.6) internal successors, (423), 5 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:35,384 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:44:35,384 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 177 [2023-08-31 23:44:35,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:44:35,494 INFO L130 PetriNetUnfolder]: 246/579 cut-off events. [2023-08-31 23:44:35,495 INFO L131 PetriNetUnfolder]: For 4261/4384 co-relation queries the response was YES. [2023-08-31 23:44:35,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2995 conditions, 579 events. 246/579 cut-off events. For 4261/4384 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3603 event pairs, 26 based on Foata normal form. 83/645 useless extension candidates. Maximal degree in co-relation 2968. Up to 368 conditions per place. [2023-08-31 23:44:35,498 INFO L137 encePairwiseOnDemand]: 171/177 looper letters, 33 selfloop transitions, 7 changer transitions 45/93 dead transitions. [2023-08-31 23:44:35,498 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 93 transitions, 1294 flow [2023-08-31 23:44:35,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 23:44:35,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 23:44:35,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 540 transitions. [2023-08-31 23:44:35,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5084745762711864 [2023-08-31 23:44:35,501 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 540 transitions. [2023-08-31 23:44:35,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 540 transitions. [2023-08-31 23:44:35,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:44:35,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 540 transitions. [2023-08-31 23:44:35,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:35,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 177.0) internal successors, (1239), 7 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:35,505 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 177.0) internal successors, (1239), 7 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:35,505 INFO L175 Difference]: Start difference. First operand has 69 places, 43 transitions, 544 flow. Second operand 6 states and 540 transitions. [2023-08-31 23:44:35,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 93 transitions, 1294 flow [2023-08-31 23:44:35,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 93 transitions, 1201 flow, removed 11 selfloop flow, removed 7 redundant places. [2023-08-31 23:44:35,516 INFO L231 Difference]: Finished difference. Result has 67 places, 34 transitions, 413 flow [2023-08-31 23:44:35,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=413, PETRI_PLACES=67, PETRI_TRANSITIONS=34} [2023-08-31 23:44:35,517 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 32 predicate places. [2023-08-31 23:44:35,517 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 34 transitions, 413 flow [2023-08-31 23:44:35,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.6) internal successors, (423), 5 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:35,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:44:35,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:44:35,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 23:44:35,518 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:44:35,518 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:44:35,518 INFO L85 PathProgramCache]: Analyzing trace with hash 789464471, now seen corresponding path program 1 times [2023-08-31 23:44:35,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:44:35,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336840552] [2023-08-31 23:44:35,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:44:35,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:44:35,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:44:35,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:44:35,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:44:35,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336840552] [2023-08-31 23:44:35,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336840552] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:44:35,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:44:35,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 23:44:35,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100727259] [2023-08-31 23:44:35,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:44:35,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 23:44:35,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:44:35,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 23:44:35,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-31 23:44:35,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 177 [2023-08-31 23:44:35,675 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 34 transitions, 413 flow. Second operand has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:35,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:44:35,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 177 [2023-08-31 23:44:35,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:44:35,742 INFO L130 PetriNetUnfolder]: 63/161 cut-off events. [2023-08-31 23:44:35,743 INFO L131 PetriNetUnfolder]: For 1273/1339 co-relation queries the response was YES. [2023-08-31 23:44:35,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 990 conditions, 161 events. 63/161 cut-off events. For 1273/1339 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 638 event pairs, 8 based on Foata normal form. 33/188 useless extension candidates. Maximal degree in co-relation 965. Up to 90 conditions per place. [2023-08-31 23:44:35,744 INFO L137 encePairwiseOnDemand]: 171/177 looper letters, 0 selfloop transitions, 0 changer transitions 53/53 dead transitions. [2023-08-31 23:44:35,744 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 53 transitions, 719 flow [2023-08-31 23:44:35,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 23:44:35,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 23:44:35,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 613 transitions. [2023-08-31 23:44:35,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947538337368846 [2023-08-31 23:44:35,746 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 613 transitions. [2023-08-31 23:44:35,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 613 transitions. [2023-08-31 23:44:35,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:44:35,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 613 transitions. [2023-08-31 23:44:35,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.57142857142857) internal successors, (613), 7 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:35,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:35,750 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:35,750 INFO L175 Difference]: Start difference. First operand has 67 places, 34 transitions, 413 flow. Second operand 7 states and 613 transitions. [2023-08-31 23:44:35,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 53 transitions, 719 flow [2023-08-31 23:44:35,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 53 transitions, 530 flow, removed 19 selfloop flow, removed 14 redundant places. [2023-08-31 23:44:35,755 INFO L231 Difference]: Finished difference. Result has 55 places, 0 transitions, 0 flow [2023-08-31 23:44:35,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=55, PETRI_TRANSITIONS=0} [2023-08-31 23:44:35,756 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 20 predicate places. [2023-08-31 23:44:35,756 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 0 transitions, 0 flow [2023-08-31 23:44:35,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:35,758 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2023-08-31 23:44:35,759 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2023-08-31 23:44:35,759 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2023-08-31 23:44:35,759 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2023-08-31 23:44:35,759 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2023-08-31 23:44:35,760 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2023-08-31 23:44:35,760 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (4 of 11 remaining) [2023-08-31 23:44:35,760 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (3 of 11 remaining) [2023-08-31 23:44:35,760 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 11 remaining) [2023-08-31 23:44:35,760 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 11 remaining) [2023-08-31 23:44:35,760 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 11 remaining) [2023-08-31 23:44:35,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 23:44:35,761 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:44:35,764 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-31 23:44:35,764 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-31 23:44:35,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.08 11:44:35 BasicIcfg [2023-08-31 23:44:35,766 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-31 23:44:35,767 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-31 23:44:35,767 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-31 23:44:35,767 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-31 23:44:35,768 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:44:28" (3/4) ... [2023-08-31 23:44:35,770 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-31 23:44:35,775 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-31 23:44:35,775 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-31 23:44:35,775 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-08-31 23:44:35,779 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-08-31 23:44:35,779 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-31 23:44:35,779 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-31 23:44:35,779 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-31 23:44:35,804 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-31 23:44:35,805 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-31 23:44:35,805 INFO L158 Benchmark]: Toolchain (without parser) took 8382.92ms. Allocated memory was 67.1MB in the beginning and 192.9MB in the end (delta: 125.8MB). Free memory was 35.3MB in the beginning and 123.3MB in the end (delta: -88.0MB). Peak memory consumption was 37.8MB. Max. memory is 16.1GB. [2023-08-31 23:44:35,805 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 67.1MB. Free memory is still 45.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 23:44:35,806 INFO L158 Benchmark]: CACSL2BoogieTranslator took 460.67ms. Allocated memory was 67.1MB in the beginning and 90.2MB in the end (delta: 23.1MB). Free memory was 35.2MB in the beginning and 59.4MB in the end (delta: -24.2MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. [2023-08-31 23:44:35,806 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.78ms. Allocated memory is still 90.2MB. Free memory was 59.4MB in the beginning and 57.3MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 23:44:35,806 INFO L158 Benchmark]: Boogie Preprocessor took 50.38ms. Allocated memory is still 90.2MB. Free memory was 57.3MB in the beginning and 55.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 23:44:35,806 INFO L158 Benchmark]: RCFGBuilder took 487.80ms. Allocated memory is still 90.2MB. Free memory was 55.9MB in the beginning and 41.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-31 23:44:35,807 INFO L158 Benchmark]: TraceAbstraction took 7279.54ms. Allocated memory was 90.2MB in the beginning and 192.9MB in the end (delta: 102.8MB). Free memory was 40.9MB in the beginning and 126.4MB in the end (delta: -85.5MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. [2023-08-31 23:44:35,807 INFO L158 Benchmark]: Witness Printer took 37.72ms. Allocated memory is still 192.9MB. Free memory was 126.4MB in the beginning and 123.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 23:44:35,809 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 67.1MB. Free memory is still 45.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 460.67ms. Allocated memory was 67.1MB in the beginning and 90.2MB in the end (delta: 23.1MB). Free memory was 35.2MB in the beginning and 59.4MB in the end (delta: -24.2MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.78ms. Allocated memory is still 90.2MB. Free memory was 59.4MB in the beginning and 57.3MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.38ms. Allocated memory is still 90.2MB. Free memory was 57.3MB in the beginning and 55.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 487.80ms. Allocated memory is still 90.2MB. Free memory was 55.9MB in the beginning and 41.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 7279.54ms. Allocated memory was 90.2MB in the beginning and 192.9MB in the end (delta: 102.8MB). Free memory was 40.9MB in the beginning and 126.4MB in the end (delta: -85.5MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. * Witness Printer took 37.72ms. Allocated memory is still 192.9MB. Free memory was 126.4MB in the beginning and 123.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.3s, 94 PlacesBefore, 35 PlacesAfterwards, 86 TransitionsBefore, 26 TransitionsAfterwards, 1512 CoEnabledTransitionPairs, 5 FixpointIterations, 25 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 84 TotalNumberOfCompositions, 2970 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1645, independent: 1563, independent conditional: 0, independent unconditional: 1563, dependent: 82, dependent conditional: 0, dependent unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 840, independent: 809, independent conditional: 0, independent unconditional: 809, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1645, independent: 754, independent conditional: 0, independent unconditional: 754, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 840, unknown conditional: 0, unknown unconditional: 840] , Statistics on independence cache: Total cache size (in pairs): 73, Positive cache size: 61, Positive conditional cache size: 0, Positive unconditional cache size: 61, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 772]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 116 locations, 11 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.2s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 480 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 370 mSDsluCounter, 180 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 121 mSDsCounter, 63 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 994 IncrementalHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 63 mSolverCounterUnsat, 59 mSDtfsCounter, 994 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=555occurred in iteration=9, InterpolantAutomatonStates: 68, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 118 ConstructedInterpolants, 0 QuantifiedInterpolants, 651 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-31 23:44:35,831 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE