./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7caf6351b1a5a890c894e0893d4dbb37232313b5d1e741d22c5bb5a1a3e463fe --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 20:37:04,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 20:37:04,288 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 20:37:04,319 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 20:37:04,319 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 20:37:04,322 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 20:37:04,323 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 20:37:04,325 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 20:37:04,327 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 20:37:04,330 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 20:37:04,331 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 20:37:04,333 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 20:37:04,333 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 20:37:04,334 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 20:37:04,335 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 20:37:04,338 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 20:37:04,338 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 20:37:04,339 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 20:37:04,340 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 20:37:04,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 20:37:04,341 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 20:37:04,342 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 20:37:04,343 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 20:37:04,343 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 20:37:04,345 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 20:37:04,345 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 20:37:04,345 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 20:37:04,346 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 20:37:04,346 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 20:37:04,347 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 20:37:04,347 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 20:37:04,347 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 20:37:04,348 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 20:37:04,348 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 20:37:04,349 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 20:37:04,349 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 20:37:04,349 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 20:37:04,349 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 20:37:04,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 20:37:04,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 20:37:04,350 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 20:37:04,351 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 20:37:04,382 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 20:37:04,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 20:37:04,384 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 20:37:04,384 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 20:37:04,384 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 20:37:04,385 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 20:37:04,385 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 20:37:04,385 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 20:37:04,385 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 20:37:04,385 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 20:37:04,385 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 20:37:04,385 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 20:37:04,386 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 20:37:04,386 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 20:37:04,386 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 20:37:04,386 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 20:37:04,386 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 20:37:04,386 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 20:37:04,386 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 20:37:04,386 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 20:37:04,386 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 20:37:04,386 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 20:37:04,386 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 20:37:04,386 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 20:37:04,387 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 20:37:04,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:37:04,387 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 20:37:04,387 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 20:37:04,387 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 20:37:04,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 20:37:04,387 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 20:37:04,387 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 20:37:04,387 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 20:37:04,387 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 20:37:04,387 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7caf6351b1a5a890c894e0893d4dbb37232313b5d1e741d22c5bb5a1a3e463fe Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 20:37:04,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 20:37:04,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 20:37:04,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 20:37:04,667 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 20:37:04,673 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 20:37:04,674 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-29 20:37:05,657 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 20:37:05,908 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 20:37:05,910 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-29 20:37:05,926 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a1a822c3/b63ff5676b4b4c31b2056120231cb533/FLAG551fb8002 [2023-08-29 20:37:05,938 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a1a822c3/b63ff5676b4b4c31b2056120231cb533 [2023-08-29 20:37:05,940 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 20:37:05,941 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 20:37:05,944 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 20:37:05,944 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 20:37:05,946 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 20:37:05,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:37:05" (1/1) ... [2023-08-29 20:37:05,948 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5162f1e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:37:05, skipping insertion in model container [2023-08-29 20:37:05,948 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:37:05" (1/1) ... [2023-08-29 20:37:05,952 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 20:37:05,986 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 20:37:06,112 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/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i[1017,1030] [2023-08-29 20:37:06,244 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:37:06,252 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 20:37:06,260 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/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i[1017,1030] [2023-08-29 20:37:06,290 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:37:06,341 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:37:06,341 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:37:06,346 INFO L208 MainTranslator]: Completed translation [2023-08-29 20:37:06,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:37:06 WrapperNode [2023-08-29 20:37:06,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 20:37:06,347 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 20:37:06,347 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 20:37:06,347 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 20:37:06,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:37:06" (1/1) ... [2023-08-29 20:37:06,372 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:37:06" (1/1) ... [2023-08-29 20:37:06,388 INFO L138 Inliner]: procedures = 175, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 59 [2023-08-29 20:37:06,389 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 20:37:06,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 20:37:06,389 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 20:37:06,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 20:37:06,395 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:37:06" (1/1) ... [2023-08-29 20:37:06,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:37:06" (1/1) ... [2023-08-29 20:37:06,403 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:37:06" (1/1) ... [2023-08-29 20:37:06,403 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:37:06" (1/1) ... [2023-08-29 20:37:06,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:37:06" (1/1) ... [2023-08-29 20:37:06,413 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:37:06" (1/1) ... [2023-08-29 20:37:06,415 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:37:06" (1/1) ... [2023-08-29 20:37:06,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:37:06" (1/1) ... [2023-08-29 20:37:06,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 20:37:06,423 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 20:37:06,424 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 20:37:06,424 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 20:37:06,424 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:37:06" (1/1) ... [2023-08-29 20:37:06,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:37:06,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 20:37:06,445 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 20:37:06,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 20:37:06,472 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-29 20:37:06,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 20:37:06,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 20:37:06,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 20:37:06,473 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-29 20:37:06,473 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-29 20:37:06,473 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-29 20:37:06,473 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-29 20:37:06,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 20:37:06,473 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-29 20:37:06,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 20:37:06,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 20:37:06,474 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 20:37:06,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 20:37:06,606 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 20:37:06,607 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 20:37:06,738 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 20:37:06,743 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 20:37:06,744 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 20:37:06,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:37:06 BoogieIcfgContainer [2023-08-29 20:37:06,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 20:37:06,747 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 20:37:06,747 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 20:37:06,749 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 20:37:06,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 08:37:05" (1/3) ... [2023-08-29 20:37:06,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cebc6e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:37:06, skipping insertion in model container [2023-08-29 20:37:06,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:37:06" (2/3) ... [2023-08-29 20:37:06,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cebc6e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:37:06, skipping insertion in model container [2023-08-29 20:37:06,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:37:06" (3/3) ... [2023-08-29 20:37:06,751 INFO L112 eAbstractionObserver]: Analyzing ICFG safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-29 20:37:06,761 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 20:37:06,762 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-29 20:37:06,762 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 20:37:06,831 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 20:37:06,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 76 transitions, 162 flow [2023-08-29 20:37:06,900 INFO L130 PetriNetUnfolder]: 2/74 cut-off events. [2023-08-29 20:37:06,901 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:37:06,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 74 events. 2/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 51 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-08-29 20:37:06,905 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 76 transitions, 162 flow [2023-08-29 20:37:06,908 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 70 transitions, 146 flow [2023-08-29 20:37:06,911 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 20:37:06,920 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 70 transitions, 146 flow [2023-08-29 20:37:06,923 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 70 transitions, 146 flow [2023-08-29 20:37:06,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 70 transitions, 146 flow [2023-08-29 20:37:06,948 INFO L130 PetriNetUnfolder]: 2/70 cut-off events. [2023-08-29 20:37:06,949 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:37:06,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 50 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2023-08-29 20:37:06,950 INFO L119 LiptonReduction]: Number of co-enabled transitions 780 [2023-08-29 20:37:08,753 INFO L134 LiptonReduction]: Checked pairs total: 1584 [2023-08-29 20:37:08,753 INFO L136 LiptonReduction]: Total number of compositions: 76 [2023-08-29 20:37:08,767 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 20:37:08,776 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;@4644166b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 20:37:08,776 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-29 20:37:08,777 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 20:37:08,777 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:37:08,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:37:08,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 20:37:08,778 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 20:37:08,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:37:08,782 INFO L85 PathProgramCache]: Analyzing trace with hash 280, now seen corresponding path program 1 times [2023-08-29 20:37:08,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:37:08,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371456954] [2023-08-29 20:37:08,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:37:08,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:37:08,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:37:08,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:37:08,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:37:08,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371456954] [2023-08-29 20:37:08,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371456954] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:37:08,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:37:08,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 20:37:08,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124953269] [2023-08-29 20:37:08,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:37:08,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 20:37:08,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:37:08,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 20:37:08,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 20:37:08,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 152 [2023-08-29 20:37:08,886 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 19 transitions, 44 flow. Second operand has 2 states, 2 states have (on average 71.5) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:08,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:37:08,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 152 [2023-08-29 20:37:08,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:37:08,916 INFO L130 PetriNetUnfolder]: 56/112 cut-off events. [2023-08-29 20:37:08,917 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:37:08,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 112 events. 56/112 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 384 event pairs, 56 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 222. Up to 109 conditions per place. [2023-08-29 20:37:08,919 INFO L137 encePairwiseOnDemand]: 147/152 looper letters, 12 selfloop transitions, 0 changer transitions 0/14 dead transitions. [2023-08-29 20:37:08,919 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 14 transitions, 58 flow [2023-08-29 20:37:08,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 20:37:08,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 20:37:08,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 159 transitions. [2023-08-29 20:37:08,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5230263157894737 [2023-08-29 20:37:08,928 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 159 transitions. [2023-08-29 20:37:08,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 159 transitions. [2023-08-29 20:37:08,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:37:08,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 159 transitions. [2023-08-29 20:37:08,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 79.5) internal successors, (159), 2 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:08,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:08,935 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:08,936 INFO L175 Difference]: Start difference. First operand has 25 places, 19 transitions, 44 flow. Second operand 2 states and 159 transitions. [2023-08-29 20:37:08,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 14 transitions, 58 flow [2023-08-29 20:37:08,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 14 transitions, 56 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 20:37:08,939 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 32 flow [2023-08-29 20:37:08,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=32, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2023-08-29 20:37:08,943 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, -5 predicate places. [2023-08-29 20:37:08,943 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 32 flow [2023-08-29 20:37:08,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 71.5) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:08,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:37:08,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:37:08,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 20:37:08,944 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 20:37:08,945 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:37:08,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1158935944, now seen corresponding path program 1 times [2023-08-29 20:37:08,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:37:08,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588489500] [2023-08-29 20:37:08,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:37:08,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:37:08,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:37:09,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:37:09,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:37:09,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588489500] [2023-08-29 20:37:09,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588489500] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:37:09,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:37:09,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 20:37:09,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415416639] [2023-08-29 20:37:09,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:37:09,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 20:37:09,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:37:09,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 20:37:09,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 20:37:09,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 152 [2023-08-29 20:37:09,294 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 32 flow. Second operand has 4 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:09,294 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:37:09,294 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 152 [2023-08-29 20:37:09,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:37:09,372 INFO L130 PetriNetUnfolder]: 64/137 cut-off events. [2023-08-29 20:37:09,372 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:37:09,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271 conditions, 137 events. 64/137 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 523 event pairs, 22 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 268. Up to 77 conditions per place. [2023-08-29 20:37:09,375 INFO L137 encePairwiseOnDemand]: 146/152 looper letters, 19 selfloop transitions, 7 changer transitions 0/28 dead transitions. [2023-08-29 20:37:09,375 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 28 transitions, 114 flow [2023-08-29 20:37:09,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 20:37:09,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 20:37:09,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 358 transitions. [2023-08-29 20:37:09,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4710526315789474 [2023-08-29 20:37:09,380 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 358 transitions. [2023-08-29 20:37:09,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 358 transitions. [2023-08-29 20:37:09,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:37:09,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 358 transitions. [2023-08-29 20:37:09,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 71.6) internal successors, (358), 5 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:09,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:09,390 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:09,390 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 32 flow. Second operand 5 states and 358 transitions. [2023-08-29 20:37:09,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 28 transitions, 114 flow [2023-08-29 20:37:09,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 28 transitions, 114 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 20:37:09,391 INFO L231 Difference]: Finished difference. Result has 28 places, 20 transitions, 88 flow [2023-08-29 20:37:09,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=88, PETRI_PLACES=28, PETRI_TRANSITIONS=20} [2023-08-29 20:37:09,392 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 3 predicate places. [2023-08-29 20:37:09,392 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 88 flow [2023-08-29 20:37:09,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:09,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:37:09,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:37:09,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 20:37:09,392 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 20:37:09,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:37:09,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1567275648, now seen corresponding path program 1 times [2023-08-29 20:37:09,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:37:09,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576072589] [2023-08-29 20:37:09,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:37:09,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:37:09,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:37:09,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:37:09,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:37:09,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576072589] [2023-08-29 20:37:09,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576072589] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:37:09,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:37:09,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 20:37:09,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020435988] [2023-08-29 20:37:09,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:37:09,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 20:37:09,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:37:09,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 20:37:09,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 20:37:09,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 152 [2023-08-29 20:37:09,597 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 88 flow. Second operand has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:09,597 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:37:09,597 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 152 [2023-08-29 20:37:09,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:37:09,627 INFO L130 PetriNetUnfolder]: 44/104 cut-off events. [2023-08-29 20:37:09,627 INFO L131 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2023-08-29 20:37:09,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 104 events. 44/104 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 382 event pairs, 30 based on Foata normal form. 17/120 useless extension candidates. Maximal degree in co-relation 290. Up to 90 conditions per place. [2023-08-29 20:37:09,628 INFO L137 encePairwiseOnDemand]: 149/152 looper letters, 13 selfloop transitions, 2 changer transitions 3/20 dead transitions. [2023-08-29 20:37:09,628 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 20 transitions, 122 flow [2023-08-29 20:37:09,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 20:37:09,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 20:37:09,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 254 transitions. [2023-08-29 20:37:09,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41776315789473684 [2023-08-29 20:37:09,629 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 254 transitions. [2023-08-29 20:37:09,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 254 transitions. [2023-08-29 20:37:09,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:37:09,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 254 transitions. [2023-08-29 20:37:09,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 63.5) internal successors, (254), 4 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:09,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:09,631 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:09,631 INFO L175 Difference]: Start difference. First operand has 28 places, 20 transitions, 88 flow. Second operand 4 states and 254 transitions. [2023-08-29 20:37:09,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 20 transitions, 122 flow [2023-08-29 20:37:09,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 20 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 20:37:09,632 INFO L231 Difference]: Finished difference. Result has 28 places, 15 transitions, 58 flow [2023-08-29 20:37:09,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=58, PETRI_PLACES=28, PETRI_TRANSITIONS=15} [2023-08-29 20:37:09,633 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 3 predicate places. [2023-08-29 20:37:09,633 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 15 transitions, 58 flow [2023-08-29 20:37:09,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:09,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:37:09,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:37:09,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 20:37:09,633 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 20:37:09,633 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:37:09,634 INFO L85 PathProgramCache]: Analyzing trace with hash 760125829, now seen corresponding path program 1 times [2023-08-29 20:37:09,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:37:09,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762394458] [2023-08-29 20:37:09,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:37:09,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:37:09,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:37:09,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:37:09,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:37:09,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762394458] [2023-08-29 20:37:09,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762394458] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:37:09,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:37:09,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:37:09,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058360663] [2023-08-29 20:37:09,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:37:09,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:37:09,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:37:09,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:37:09,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:37:09,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 152 [2023-08-29 20:37:09,738 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 15 transitions, 58 flow. Second operand has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:09,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:37:09,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 152 [2023-08-29 20:37:09,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:37:09,824 INFO L130 PetriNetUnfolder]: 78/170 cut-off events. [2023-08-29 20:37:09,824 INFO L131 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2023-08-29 20:37:09,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 444 conditions, 170 events. 78/170 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 761 event pairs, 8 based on Foata normal form. 14/183 useless extension candidates. Maximal degree in co-relation 437. Up to 59 conditions per place. [2023-08-29 20:37:09,829 INFO L137 encePairwiseOnDemand]: 146/152 looper letters, 20 selfloop transitions, 6 changer transitions 12/39 dead transitions. [2023-08-29 20:37:09,830 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 39 transitions, 208 flow [2023-08-29 20:37:09,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-29 20:37:09,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-29 20:37:09,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 617 transitions. [2023-08-29 20:37:09,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4510233918128655 [2023-08-29 20:37:09,832 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 617 transitions. [2023-08-29 20:37:09,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 617 transitions. [2023-08-29 20:37:09,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:37:09,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 617 transitions. [2023-08-29 20:37:09,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 68.55555555555556) internal successors, (617), 9 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:09,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 152.0) internal successors, (1520), 10 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:09,836 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 152.0) internal successors, (1520), 10 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:09,836 INFO L175 Difference]: Start difference. First operand has 28 places, 15 transitions, 58 flow. Second operand 9 states and 617 transitions. [2023-08-29 20:37:09,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 39 transitions, 208 flow [2023-08-29 20:37:09,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 39 transitions, 193 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-29 20:37:09,838 INFO L231 Difference]: Finished difference. Result has 38 places, 17 transitions, 95 flow [2023-08-29 20:37:09,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=95, PETRI_PLACES=38, PETRI_TRANSITIONS=17} [2023-08-29 20:37:09,839 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 13 predicate places. [2023-08-29 20:37:09,839 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 17 transitions, 95 flow [2023-08-29 20:37:09,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:09,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:37:09,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:37:09,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 20:37:09,839 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 20:37:09,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:37:09,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1567238977, now seen corresponding path program 1 times [2023-08-29 20:37:09,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:37:09,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063614416] [2023-08-29 20:37:09,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:37:09,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:37:09,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:37:09,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:37:09,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:37:09,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063614416] [2023-08-29 20:37:09,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063614416] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:37:09,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:37:09,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:37:09,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386266924] [2023-08-29 20:37:09,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:37:09,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:37:09,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:37:09,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:37:09,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:37:09,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 152 [2023-08-29 20:37:09,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 17 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:09,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:37:09,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 152 [2023-08-29 20:37:09,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:37:09,996 INFO L130 PetriNetUnfolder]: 38/106 cut-off events. [2023-08-29 20:37:09,996 INFO L131 PetriNetUnfolder]: For 262/263 co-relation queries the response was YES. [2023-08-29 20:37:09,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327 conditions, 106 events. 38/106 cut-off events. For 262/263 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 430 event pairs, 17 based on Foata normal form. 11/115 useless extension candidates. Maximal degree in co-relation 314. Up to 65 conditions per place. [2023-08-29 20:37:09,996 INFO L137 encePairwiseOnDemand]: 148/152 looper letters, 14 selfloop transitions, 3 changer transitions 8/27 dead transitions. [2023-08-29 20:37:09,996 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 27 transitions, 186 flow [2023-08-29 20:37:09,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 20:37:09,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 20:37:09,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 353 transitions. [2023-08-29 20:37:09,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4644736842105263 [2023-08-29 20:37:09,998 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 353 transitions. [2023-08-29 20:37:09,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 353 transitions. [2023-08-29 20:37:09,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:37:09,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 353 transitions. [2023-08-29 20:37:09,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 70.6) internal successors, (353), 5 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:10,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:10,000 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:10,000 INFO L175 Difference]: Start difference. First operand has 38 places, 17 transitions, 95 flow. Second operand 5 states and 353 transitions. [2023-08-29 20:37:10,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 27 transitions, 186 flow [2023-08-29 20:37:10,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 27 transitions, 168 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-08-29 20:37:10,002 INFO L231 Difference]: Finished difference. Result has 36 places, 15 transitions, 82 flow [2023-08-29 20:37:10,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=82, PETRI_PLACES=36, PETRI_TRANSITIONS=15} [2023-08-29 20:37:10,004 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 11 predicate places. [2023-08-29 20:37:10,005 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 15 transitions, 82 flow [2023-08-29 20:37:10,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:10,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:37:10,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:37:10,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 20:37:10,005 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 20:37:10,005 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:37:10,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1340088604, now seen corresponding path program 1 times [2023-08-29 20:37:10,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:37:10,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163886136] [2023-08-29 20:37:10,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:37:10,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:37:10,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:37:10,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:37:10,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:37:10,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163886136] [2023-08-29 20:37:10,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163886136] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:37:10,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:37:10,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 20:37:10,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305568422] [2023-08-29 20:37:10,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:37:10,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 20:37:10,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:37:10,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 20:37:10,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-29 20:37:10,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 152 [2023-08-29 20:37:10,134 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 15 transitions, 82 flow. Second operand has 6 states, 6 states have (on average 65.5) internal successors, (393), 6 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:10,134 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:37:10,134 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 152 [2023-08-29 20:37:10,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:37:10,180 INFO L130 PetriNetUnfolder]: 44/103 cut-off events. [2023-08-29 20:37:10,180 INFO L131 PetriNetUnfolder]: For 160/160 co-relation queries the response was YES. [2023-08-29 20:37:10,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 103 events. 44/103 cut-off events. For 160/160 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 351 event pairs, 15 based on Foata normal form. 6/108 useless extension candidates. Maximal degree in co-relation 320. Up to 33 conditions per place. [2023-08-29 20:37:10,181 INFO L137 encePairwiseOnDemand]: 147/152 looper letters, 12 selfloop transitions, 3 changer transitions 10/26 dead transitions. [2023-08-29 20:37:10,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 26 transitions, 172 flow [2023-08-29 20:37:10,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 20:37:10,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 20:37:10,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 410 transitions. [2023-08-29 20:37:10,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44956140350877194 [2023-08-29 20:37:10,182 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 410 transitions. [2023-08-29 20:37:10,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 410 transitions. [2023-08-29 20:37:10,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:37:10,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 410 transitions. [2023-08-29 20:37:10,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 68.33333333333333) internal successors, (410), 6 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:10,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 152.0) internal successors, (1064), 7 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:10,184 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 152.0) internal successors, (1064), 7 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:10,184 INFO L175 Difference]: Start difference. First operand has 36 places, 15 transitions, 82 flow. Second operand 6 states and 410 transitions. [2023-08-29 20:37:10,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 26 transitions, 172 flow [2023-08-29 20:37:10,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 26 transitions, 147 flow, removed 6 selfloop flow, removed 8 redundant places. [2023-08-29 20:37:10,185 INFO L231 Difference]: Finished difference. Result has 34 places, 13 transitions, 69 flow [2023-08-29 20:37:10,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=69, PETRI_PLACES=34, PETRI_TRANSITIONS=13} [2023-08-29 20:37:10,186 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 9 predicate places. [2023-08-29 20:37:10,186 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 13 transitions, 69 flow [2023-08-29 20:37:10,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.5) internal successors, (393), 6 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:10,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:37:10,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:37:10,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 20:37:10,186 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 20:37:10,186 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:37:10,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1601789248, now seen corresponding path program 1 times [2023-08-29 20:37:10,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:37:10,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188383606] [2023-08-29 20:37:10,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:37:10,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:37:10,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:37:10,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:37:10,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:37:10,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188383606] [2023-08-29 20:37:10,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188383606] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:37:10,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:37:10,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 20:37:10,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914430461] [2023-08-29 20:37:10,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:37:10,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 20:37:10,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:37:10,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 20:37:10,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-29 20:37:10,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 152 [2023-08-29 20:37:10,300 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 13 transitions, 69 flow. Second operand has 6 states, 6 states have (on average 65.5) internal successors, (393), 6 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:10,300 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:37:10,300 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 152 [2023-08-29 20:37:10,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:37:10,332 INFO L130 PetriNetUnfolder]: 21/49 cut-off events. [2023-08-29 20:37:10,333 INFO L131 PetriNetUnfolder]: For 114/114 co-relation queries the response was YES. [2023-08-29 20:37:10,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 49 events. 21/49 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 100 event pairs, 6 based on Foata normal form. 6/53 useless extension candidates. Maximal degree in co-relation 161. Up to 19 conditions per place. [2023-08-29 20:37:10,333 INFO L137 encePairwiseOnDemand]: 148/152 looper letters, 0 selfloop transitions, 0 changer transitions 19/19 dead transitions. [2023-08-29 20:37:10,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 19 transitions, 123 flow [2023-08-29 20:37:10,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 20:37:10,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 20:37:10,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 404 transitions. [2023-08-29 20:37:10,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44298245614035087 [2023-08-29 20:37:10,334 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 404 transitions. [2023-08-29 20:37:10,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 404 transitions. [2023-08-29 20:37:10,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:37:10,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 404 transitions. [2023-08-29 20:37:10,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 67.33333333333333) internal successors, (404), 6 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:10,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 152.0) internal successors, (1064), 7 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:10,336 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 152.0) internal successors, (1064), 7 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:10,336 INFO L175 Difference]: Start difference. First operand has 34 places, 13 transitions, 69 flow. Second operand 6 states and 404 transitions. [2023-08-29 20:37:10,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 19 transitions, 123 flow [2023-08-29 20:37:10,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 19 transitions, 85 flow, removed 10 selfloop flow, removed 9 redundant places. [2023-08-29 20:37:10,337 INFO L231 Difference]: Finished difference. Result has 27 places, 0 transitions, 0 flow [2023-08-29 20:37:10,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=33, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=27, PETRI_TRANSITIONS=0} [2023-08-29 20:37:10,338 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 2 predicate places. [2023-08-29 20:37:10,338 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 0 transitions, 0 flow [2023-08-29 20:37:10,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.5) internal successors, (393), 6 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:10,340 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 8 remaining) [2023-08-29 20:37:10,340 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2023-08-29 20:37:10,340 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2023-08-29 20:37:10,340 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2023-08-29 20:37:10,340 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (3 of 8 remaining) [2023-08-29 20:37:10,341 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2023-08-29 20:37:10,341 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-08-29 20:37:10,341 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2023-08-29 20:37:10,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 20:37:10,341 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:37:10,343 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 20:37:10,343 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 20:37:10,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 08:37:10 BasicIcfg [2023-08-29 20:37:10,345 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 20:37:10,345 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 20:37:10,345 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 20:37:10,345 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 20:37:10,346 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:37:06" (3/4) ... [2023-08-29 20:37:10,347 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-29 20:37:10,360 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-29 20:37:10,360 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-29 20:37:10,374 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-08-29 20:37:10,374 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-29 20:37:10,374 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-29 20:37:10,374 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-29 20:37:10,404 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-29 20:37:10,404 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 20:37:10,405 INFO L158 Benchmark]: Toolchain (without parser) took 4463.66ms. Allocated memory was 77.6MB in the beginning and 151.0MB in the end (delta: 73.4MB). Free memory was 53.2MB in the beginning and 106.9MB in the end (delta: -53.7MB). Peak memory consumption was 22.8MB. Max. memory is 16.1GB. [2023-08-29 20:37:10,405 INFO L158 Benchmark]: CDTParser took 2.97ms. Allocated memory is still 56.6MB. Free memory was 34.9MB in the beginning and 34.8MB in the end (delta: 46.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 20:37:10,405 INFO L158 Benchmark]: CACSL2BoogieTranslator took 402.52ms. Allocated memory is still 77.6MB. Free memory was 52.9MB in the beginning and 53.0MB in the end (delta: -42.5kB). Peak memory consumption was 21.9MB. Max. memory is 16.1GB. [2023-08-29 20:37:10,405 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.04ms. Allocated memory is still 77.6MB. Free memory was 53.0MB in the beginning and 50.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 20:37:10,405 INFO L158 Benchmark]: Boogie Preprocessor took 33.39ms. Allocated memory is still 77.6MB. Free memory was 50.9MB in the beginning and 49.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 20:37:10,405 INFO L158 Benchmark]: RCFGBuilder took 322.83ms. Allocated memory is still 77.6MB. Free memory was 49.5MB in the beginning and 36.4MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-29 20:37:10,406 INFO L158 Benchmark]: TraceAbstraction took 3598.04ms. Allocated memory was 77.6MB in the beginning and 151.0MB in the end (delta: 73.4MB). Free memory was 35.8MB in the beginning and 109.0MB in the end (delta: -73.3MB). Peak memory consumption was 857.0kB. Max. memory is 16.1GB. [2023-08-29 20:37:10,406 INFO L158 Benchmark]: Witness Printer took 59.01ms. Allocated memory is still 151.0MB. Free memory was 109.0MB in the beginning and 106.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 20:37:10,408 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.97ms. Allocated memory is still 56.6MB. Free memory was 34.9MB in the beginning and 34.8MB in the end (delta: 46.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 402.52ms. Allocated memory is still 77.6MB. Free memory was 52.9MB in the beginning and 53.0MB in the end (delta: -42.5kB). Peak memory consumption was 21.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.04ms. Allocated memory is still 77.6MB. Free memory was 53.0MB in the beginning and 50.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.39ms. Allocated memory is still 77.6MB. Free memory was 50.9MB in the beginning and 49.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 322.83ms. Allocated memory is still 77.6MB. Free memory was 49.5MB in the beginning and 36.4MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3598.04ms. Allocated memory was 77.6MB in the beginning and 151.0MB in the end (delta: 73.4MB). Free memory was 35.8MB in the beginning and 109.0MB in the end (delta: -73.3MB). Peak memory consumption was 857.0kB. Max. memory is 16.1GB. * Witness Printer took 59.01ms. Allocated memory is still 151.0MB. Free memory was 109.0MB in the beginning and 106.9MB in the end (delta: 2.2MB). 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: 1.8s, 75 PlacesBefore, 25 PlacesAfterwards, 70 TransitionsBefore, 19 TransitionsAfterwards, 780 CoEnabledTransitionPairs, 6 FixpointIterations, 28 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 76 TotalNumberOfCompositions, 1584 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 910, independent: 842, independent conditional: 0, independent unconditional: 842, dependent: 68, dependent conditional: 0, dependent unconditional: 68, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 458, independent: 441, independent conditional: 0, independent unconditional: 441, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 910, independent: 401, independent conditional: 0, independent unconditional: 401, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 458, unknown conditional: 0, unknown unconditional: 458] , Statistics on independence cache: Total cache size (in pairs): 28, Positive cache size: 23, Positive conditional cache size: 0, Positive unconditional cache size: 23, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, 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: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 758]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 91 locations, 8 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: 3.5s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 265 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 190 mSDsluCounter, 95 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 62 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 393 IncrementalHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 33 mSDtfsCounter, 393 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=95occurred in iteration=4, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 292 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-29 20:37:10,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE